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Commit 4c7a08c8 authored by Alex Elder's avatar Alex Elder
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Merge branch 'testing' of github.com:ceph/ceph-client into into linux-3.8-ceph

parents 19f949f5 903bb32e
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Showing with 1756 additions and 1125 deletions
drivers/block/rbd.c
View file @ 4c7a08c8
......@@ -52,8 +52,11 @@
#define SECTOR_SHIFT 9
#define SECTOR_SIZE (1ULL << SECTOR_SHIFT)
/* It might be useful to have this defined elsewhere too */
/* It might be useful to have these defined elsewhere */
#define U8_MAX ((u8) (~0U))
#define U16_MAX ((u16) (~0U))
#define U32_MAX ((u32) (~0U))
#define U64_MAX ((u64) (~0ULL))
#define RBD_DRV_NAME "rbd"
......@@ -66,7 +69,6 @@
(NAME_MAX - (sizeof (RBD_SNAP_DEV_NAME_PREFIX) - 1))
#define RBD_MAX_SNAP_COUNT 510 /* allows max snapc to fit in 4KB */
#define RBD_MAX_OPT_LEN 1024
#define RBD_SNAP_HEAD_NAME "-"
......@@ -93,8 +95,6 @@
#define DEV_NAME_LEN 32
#define MAX_INT_FORMAT_WIDTH ((5 * sizeof (int)) / 2 + 1)
#define RBD_READ_ONLY_DEFAULT false
/*
* block device image metadata (in-memory version)
*/
......@@ -119,16 +119,33 @@ struct rbd_image_header {
* An rbd image specification.
*
* The tuple (pool_id, image_id, snap_id) is sufficient to uniquely
* identify an image.
* identify an image. Each rbd_dev structure includes a pointer to
* an rbd_spec structure that encapsulates this identity.
*
* Each of the id's in an rbd_spec has an associated name. For a
* user-mapped image, the names are supplied and the id's associated
* with them are looked up. For a layered image, a parent image is
* defined by the tuple, and the names are looked up.
*
* An rbd_dev structure contains a parent_spec pointer which is
* non-null if the image it represents is a child in a layered
* image. This pointer will refer to the rbd_spec structure used
* by the parent rbd_dev for its own identity (i.e., the structure
* is shared between the parent and child).
*
* Since these structures are populated once, during the discovery
* phase of image construction, they are effectively immutable so
* we make no effort to synchronize access to them.
*
* Note that code herein does not assume the image name is known (it
* could be a null pointer).
*/
struct rbd_spec {
u64 pool_id;
char *pool_name;
char *image_id;
size_t image_id_len;
char *image_name;
size_t image_name_len;
u64 snap_id;
char *snap_name;
......@@ -136,10 +153,6 @@ struct rbd_spec {
struct kref kref;
};
struct rbd_options {
bool read_only;
};
/*
* an instance of the client. multiple devices may share an rbd client.
*/
......@@ -149,37 +162,76 @@ struct rbd_client {
struct list_head node;
};
/*
* a request completion status
*/
struct rbd_req_status {
int done;
int rc;
u64 bytes;
struct rbd_img_request;
typedef void (*rbd_img_callback_t)(struct rbd_img_request *);
#define BAD_WHICH U32_MAX /* Good which or bad which, which? */
struct rbd_obj_request;
typedef void (*rbd_obj_callback_t)(struct rbd_obj_request *);
enum obj_request_type {
OBJ_REQUEST_NODATA, OBJ_REQUEST_BIO, OBJ_REQUEST_PAGES
};
/*
* a collection of requests
*/
struct rbd_req_coll {
int total;
int num_done;
struct rbd_obj_request {
const char *object_name;
u64 offset; /* object start byte */
u64 length; /* bytes from offset */
struct rbd_img_request *img_request;
struct list_head links; /* img_request->obj_requests */
u32 which; /* posn image request list */
enum obj_request_type type;
union {
struct bio *bio_list;
struct {
struct page **pages;
u32 page_count;
};
};
struct ceph_osd_request *osd_req;
u64 xferred; /* bytes transferred */
u64 version;
s32 result;
atomic_t done;
rbd_obj_callback_t callback;
struct completion completion;
struct kref kref;
struct rbd_req_status status[0];
};
/*
* a single io request
*/
struct rbd_request {
struct request *rq; /* blk layer request */
struct bio *bio; /* cloned bio */
struct page **pages; /* list of used pages */
u64 len;
int coll_index;
struct rbd_req_coll *coll;
struct rbd_img_request {
struct request *rq;
struct rbd_device *rbd_dev;
u64 offset; /* starting image byte offset */
u64 length; /* byte count from offset */
bool write_request; /* false for read */
union {
struct ceph_snap_context *snapc; /* for writes */
u64 snap_id; /* for reads */
};
spinlock_t completion_lock;/* protects next_completion */
u32 next_completion;
rbd_img_callback_t callback;
u32 obj_request_count;
struct list_head obj_requests; /* rbd_obj_request structs */
struct kref kref;
};
#define for_each_obj_request(ireq, oreq) \
list_for_each_entry(oreq, &(ireq)->obj_requests, links)
#define for_each_obj_request_from(ireq, oreq) \
list_for_each_entry_from(oreq, &(ireq)->obj_requests, links)
#define for_each_obj_request_safe(ireq, oreq, n) \
list_for_each_entry_safe_reverse(oreq, n, &(ireq)->obj_requests, links)
struct rbd_snap {
struct device dev;
const char *name;
......@@ -209,16 +261,18 @@ struct rbd_device {
char name[DEV_NAME_LEN]; /* blkdev name, e.g. rbd3 */
spinlock_t lock; /* queue lock */
spinlock_t lock; /* queue, flags, open_count */
struct rbd_image_header header;
bool exists;
unsigned long flags; /* possibly lock protected */
struct rbd_spec *spec;
char *header_name;
struct ceph_file_layout layout;
struct ceph_osd_event *watch_event;
struct ceph_osd_request *watch_request;
struct rbd_obj_request *watch_request;
struct rbd_spec *parent_spec;
u64 parent_overlap;
......@@ -235,7 +289,19 @@ struct rbd_device {
/* sysfs related */
struct device dev;
unsigned long open_count;
unsigned long open_count; /* protected by lock */
};
/*
* Flag bits for rbd_dev->flags. If atomicity is required,
* rbd_dev->lock is used to protect access.
*
* Currently, only the "removing" flag (which is coupled with the
* "open_count" field) requires atomic access.
*/
enum rbd_dev_flags {
RBD_DEV_FLAG_EXISTS, /* mapped snapshot has not been deleted */
RBD_DEV_FLAG_REMOVING, /* this mapping is being removed */
};
static DEFINE_MUTEX(ctl_mutex); /* Serialize open/close/setup/teardown */
......@@ -277,6 +343,33 @@ static struct device rbd_root_dev = {
.release = rbd_root_dev_release,
};
static __printf(2, 3)
void rbd_warn(struct rbd_device *rbd_dev, const char *fmt, ...)
{
struct va_format vaf;
va_list args;
va_start(args, fmt);
vaf.fmt = fmt;
vaf.va = &args;
if (!rbd_dev)
printk(KERN_WARNING "%s: %pV\n", RBD_DRV_NAME, &vaf);
else if (rbd_dev->disk)
printk(KERN_WARNING "%s: %s: %pV\n",
RBD_DRV_NAME, rbd_dev->disk->disk_name, &vaf);
else if (rbd_dev->spec && rbd_dev->spec->image_name)
printk(KERN_WARNING "%s: image %s: %pV\n",
RBD_DRV_NAME, rbd_dev->spec->image_name, &vaf);
else if (rbd_dev->spec && rbd_dev->spec->image_id)
printk(KERN_WARNING "%s: id %s: %pV\n",
RBD_DRV_NAME, rbd_dev->spec->image_id, &vaf);
else /* punt */
printk(KERN_WARNING "%s: rbd_dev %p: %pV\n",
RBD_DRV_NAME, rbd_dev, &vaf);
va_end(args);
}
#ifdef RBD_DEBUG
#define rbd_assert(expr) \
if (unlikely(!(expr))) { \
......@@ -296,14 +389,23 @@ static int rbd_dev_v2_refresh(struct rbd_device *rbd_dev, u64 *hver);
static int rbd_open(struct block_device *bdev, fmode_t mode)
{
struct rbd_device *rbd_dev = bdev->bd_disk->private_data;
bool removing = false;
if ((mode & FMODE_WRITE) && rbd_dev->mapping.read_only)
return -EROFS;
spin_lock_irq(&rbd_dev->lock);
if (test_bit(RBD_DEV_FLAG_REMOVING, &rbd_dev->flags))
removing = true;
else
rbd_dev->open_count++;
spin_unlock_irq(&rbd_dev->lock);
if (removing)
return -ENOENT;
mutex_lock_nested(&ctl_mutex, SINGLE_DEPTH_NESTING);
(void) get_device(&rbd_dev->dev);
set_device_ro(bdev, rbd_dev->mapping.read_only);
rbd_dev->open_count++;
mutex_unlock(&ctl_mutex);
return 0;
......@@ -312,10 +414,14 @@ static int rbd_open(struct block_device *bdev, fmode_t mode)
static int rbd_release(struct gendisk *disk, fmode_t mode)
{
struct rbd_device *rbd_dev = disk->private_data;
unsigned long open_count_before;
spin_lock_irq(&rbd_dev->lock);
open_count_before = rbd_dev->open_count--;
spin_unlock_irq(&rbd_dev->lock);
rbd_assert(open_count_before > 0);
mutex_lock_nested(&ctl_mutex, SINGLE_DEPTH_NESTING);
rbd_assert(rbd_dev->open_count > 0);
rbd_dev->open_count--;
put_device(&rbd_dev->dev);
mutex_unlock(&ctl_mutex);
......@@ -426,6 +532,12 @@ static match_table_t rbd_opts_tokens = {
{-1, NULL}
};
struct rbd_options {
bool read_only;
};
#define RBD_READ_ONLY_DEFAULT false
static int parse_rbd_opts_token(char *c, void *private)
{
struct rbd_options *rbd_opts = private;
......@@ -512,18 +624,6 @@ static void rbd_put_client(struct rbd_client *rbdc)
kref_put(&rbdc->kref, rbd_client_release);
}
/*
* Destroy requests collection
*/
static void rbd_coll_release(struct kref *kref)
{
struct rbd_req_coll *coll =
container_of(kref, struct rbd_req_coll, kref);
dout("rbd_coll_release %p\n", coll);
kfree(coll);
}
static bool rbd_image_format_valid(u32 image_format)
{
return image_format == 1 || image_format == 2;
......@@ -707,7 +807,8 @@ static int rbd_dev_set_mapping(struct rbd_device *rbd_dev)
goto done;
rbd_dev->mapping.read_only = true;
}
rbd_dev->exists = true;
set_bit(RBD_DEV_FLAG_EXISTS, &rbd_dev->flags);
done:
return ret;
}
......@@ -724,7 +825,7 @@ static void rbd_header_free(struct rbd_image_header *header)
header->snapc = NULL;
}
static char *rbd_segment_name(struct rbd_device *rbd_dev, u64 offset)
static const char *rbd_segment_name(struct rbd_device *rbd_dev, u64 offset)
{
char *name;
u64 segment;
......@@ -767,23 +868,6 @@ static u64 rbd_segment_length(struct rbd_device *rbd_dev,
return length;
}
static int rbd_get_num_segments(struct rbd_image_header *header,
u64 ofs, u64 len)
{
u64 start_seg;
u64 end_seg;
if (!len)
return 0;
if (len - 1 > U64_MAX - ofs)
return -ERANGE;
start_seg = ofs >> header->obj_order;
end_seg = (ofs + len - 1) >> header->obj_order;
return end_seg - start_seg + 1;
}
/*
* returns the size of an object in the image
*/
......@@ -949,8 +1033,10 @@ static struct bio *bio_chain_clone_range(struct bio **bio_src,
unsigned int bi_size;
struct bio *bio;
if (!bi)
if (!bi) {
rbd_warn(NULL, "bio_chain exhausted with %u left", len);
goto out_err; /* EINVAL; ran out of bio's */
}
bi_size = min_t(unsigned int, bi->bi_size - off, len);
bio = bio_clone_range(bi, off, bi_size, gfpmask);
if (!bio)
......@@ -976,399 +1062,665 @@ static struct bio *bio_chain_clone_range(struct bio **bio_src,
return NULL;
}
/*
* helpers for osd request op vectors.
*/
static struct ceph_osd_req_op *rbd_create_rw_ops(int num_ops,
int opcode, u32 payload_len)
static void rbd_obj_request_get(struct rbd_obj_request *obj_request)
{
kref_get(&obj_request->kref);
}
static void rbd_obj_request_destroy(struct kref *kref);
static void rbd_obj_request_put(struct rbd_obj_request *obj_request)
{
rbd_assert(obj_request != NULL);
kref_put(&obj_request->kref, rbd_obj_request_destroy);
}
static void rbd_img_request_get(struct rbd_img_request *img_request)
{
kref_get(&img_request->kref);
}
static void rbd_img_request_destroy(struct kref *kref);
static void rbd_img_request_put(struct rbd_img_request *img_request)
{
rbd_assert(img_request != NULL);
kref_put(&img_request->kref, rbd_img_request_destroy);
}
static inline void rbd_img_obj_request_add(struct rbd_img_request *img_request,
struct rbd_obj_request *obj_request)
{
rbd_assert(obj_request->img_request == NULL);
rbd_obj_request_get(obj_request);
obj_request->img_request = img_request;
obj_request->which = img_request->obj_request_count;
rbd_assert(obj_request->which != BAD_WHICH);
img_request->obj_request_count++;
list_add_tail(&obj_request->links, &img_request->obj_requests);
}
static inline void rbd_img_obj_request_del(struct rbd_img_request *img_request,
struct rbd_obj_request *obj_request)
{
rbd_assert(obj_request->which != BAD_WHICH);
list_del(&obj_request->links);
rbd_assert(img_request->obj_request_count > 0);
img_request->obj_request_count--;
rbd_assert(obj_request->which == img_request->obj_request_count);
obj_request->which = BAD_WHICH;
rbd_assert(obj_request->img_request == img_request);
obj_request->img_request = NULL;
obj_request->callback = NULL;
rbd_obj_request_put(obj_request);
}
static bool obj_request_type_valid(enum obj_request_type type)
{
switch (type) {
case OBJ_REQUEST_NODATA:
case OBJ_REQUEST_BIO:
case OBJ_REQUEST_PAGES:
return true;
default:
return false;
}
}
struct ceph_osd_req_op *rbd_osd_req_op_create(u16 opcode, ...)
{
struct ceph_osd_req_op *ops;
struct ceph_osd_req_op *op;
va_list args;
size_t size;
ops = kzalloc(sizeof (*ops) * (num_ops + 1), GFP_NOIO);
if (!ops)
op = kzalloc(sizeof (*op), GFP_NOIO);
if (!op)
return NULL;
op->op = opcode;
va_start(args, opcode);
switch (opcode) {
case CEPH_OSD_OP_READ:
case CEPH_OSD_OP_WRITE:
/* rbd_osd_req_op_create(READ, offset, length) */
/* rbd_osd_req_op_create(WRITE, offset, length) */
op->extent.offset = va_arg(args, u64);
op->extent.length = va_arg(args, u64);
if (opcode == CEPH_OSD_OP_WRITE)
op->payload_len = op->extent.length;
break;
case CEPH_OSD_OP_STAT:
break;
case CEPH_OSD_OP_CALL:
/* rbd_osd_req_op_create(CALL, class, method, data, datalen) */
op->cls.class_name = va_arg(args, char *);
size = strlen(op->cls.class_name);
rbd_assert(size <= (size_t) U8_MAX);
op->cls.class_len = size;
op->payload_len = size;
op->cls.method_name = va_arg(args, char *);
size = strlen(op->cls.method_name);
rbd_assert(size <= (size_t) U8_MAX);
op->cls.method_len = size;
op->payload_len += size;
op->cls.argc = 0;
op->cls.indata = va_arg(args, void *);
size = va_arg(args, size_t);
rbd_assert(size <= (size_t) U32_MAX);
op->cls.indata_len = (u32) size;
op->payload_len += size;
break;
case CEPH_OSD_OP_NOTIFY_ACK:
case CEPH_OSD_OP_WATCH:
/* rbd_osd_req_op_create(NOTIFY_ACK, cookie, version) */
/* rbd_osd_req_op_create(WATCH, cookie, version, flag) */
op->watch.cookie = va_arg(args, u64);
op->watch.ver = va_arg(args, u64);
op->watch.ver = cpu_to_le64(op->watch.ver);
if (opcode == CEPH_OSD_OP_WATCH && va_arg(args, int))
op->watch.flag = (u8) 1;
break;
default:
rbd_warn(NULL, "unsupported opcode %hu\n", opcode);
kfree(op);
op = NULL;
break;
}
va_end(args);
ops[0].op = opcode;
return op;
}
/*
* op extent offset and length will be set later on
* in calc_raw_layout()
*/
ops[0].payload_len = payload_len;
static void rbd_osd_req_op_destroy(struct ceph_osd_req_op *op)
{
kfree(op);
}
return ops;
static int rbd_obj_request_submit(struct ceph_osd_client *osdc,
struct rbd_obj_request *obj_request)
{
return ceph_osdc_start_request(osdc, obj_request->osd_req, false);
}
static void rbd_destroy_ops(struct ceph_osd_req_op *ops)
static void rbd_img_request_complete(struct rbd_img_request *img_request)
{
kfree(ops);
if (img_request->callback)
img_request->callback(img_request);
else
rbd_img_request_put(img_request);
}
static void rbd_coll_end_req_index(struct request *rq,
struct rbd_req_coll *coll,
int index,
int ret, u64 len)
/* Caller is responsible for rbd_obj_request_destroy(obj_request) */
static int rbd_obj_request_wait(struct rbd_obj_request *obj_request)
{
struct request_queue *q;
int min, max, i;
return wait_for_completion_interruptible(&obj_request->completion);
}
dout("rbd_coll_end_req_index %p index %d ret %d len %llu\n",
coll, index, ret, (unsigned long long) len);
static void obj_request_done_init(struct rbd_obj_request *obj_request)
{
atomic_set(&obj_request->done, 0);
smp_wmb();
}
if (!rq)
return;
static void obj_request_done_set(struct rbd_obj_request *obj_request)
{
atomic_set(&obj_request->done, 1);
smp_wmb();
}
if (!coll) {
blk_end_request(rq, ret, len);
return;
}
static bool obj_request_done_test(struct rbd_obj_request *obj_request)
{
smp_rmb();
return atomic_read(&obj_request->done) != 0;
}
static void rbd_osd_trivial_callback(struct rbd_obj_request *obj_request,
struct ceph_osd_op *op)
{
obj_request_done_set(obj_request);
}
q = rq->q;
static void rbd_obj_request_complete(struct rbd_obj_request *obj_request)
{
if (obj_request->callback)
obj_request->callback(obj_request);
else
complete_all(&obj_request->completion);
}
spin_lock_irq(q->queue_lock);
coll->status[index].done = 1;
coll->status[index].rc = ret;
coll->status[index].bytes = len;
max = min = coll->num_done;
while (max < coll->total && coll->status[max].done)
max++;
for (i = min; i<max; i++) {
__blk_end_request(rq, coll->status[i].rc,
coll->status[i].bytes);
coll->num_done++;
kref_put(&coll->kref, rbd_coll_release);
static void rbd_osd_read_callback(struct rbd_obj_request *obj_request,
struct ceph_osd_op *op)
{
u64 xferred;
/*
* We support a 64-bit length, but ultimately it has to be
* passed to blk_end_request(), which takes an unsigned int.
*/
xferred = le64_to_cpu(op->extent.length);
rbd_assert(xferred < (u64) UINT_MAX);
if (obj_request->result == (s32) -ENOENT) {
zero_bio_chain(obj_request->bio_list, 0);
obj_request->result = 0;
} else if (xferred < obj_request->length && !obj_request->result) {
zero_bio_chain(obj_request->bio_list, xferred);
xferred = obj_request->length;
}
spin_unlock_irq(q->queue_lock);
obj_request->xferred = xferred;
obj_request_done_set(obj_request);
}
static void rbd_coll_end_req(struct rbd_request *req,
int ret, u64 len)
static void rbd_osd_write_callback(struct rbd_obj_request *obj_request,
struct ceph_osd_op *op)
{
rbd_coll_end_req_index(req->rq, req->coll, req->coll_index, ret, len);
obj_request->xferred = le64_to_cpu(op->extent.length);
obj_request_done_set(obj_request);
}
/*
* Send ceph osd request
* For a simple stat call there's nothing to do. We'll do more if
* this is part of a write sequence for a layered image.
*/
static int rbd_do_request(struct request *rq,
struct rbd_device *rbd_dev,
struct ceph_snap_context *snapc,
u64 snapid,
const char *object_name, u64 ofs, u64 len,
struct bio *bio,
struct page **pages,
int num_pages,
int flags,
struct ceph_osd_req_op *ops,
struct rbd_req_coll *coll,
int coll_index,
void (*rbd_cb)(struct ceph_osd_request *req,
struct ceph_msg *msg),
struct ceph_osd_request **linger_req,
u64 *ver)
{
struct ceph_osd_request *req;
struct ceph_file_layout *layout;
int ret;
u64 bno;
struct timespec mtime = CURRENT_TIME;
struct rbd_request *req_data;
struct ceph_osd_request_head *reqhead;
struct ceph_osd_client *osdc;
static void rbd_osd_stat_callback(struct rbd_obj_request *obj_request,
struct ceph_osd_op *op)
{
obj_request_done_set(obj_request);
}
req_data = kzalloc(sizeof(*req_data), GFP_NOIO);
if (!req_data) {
if (coll)
rbd_coll_end_req_index(rq, coll, coll_index,
-ENOMEM, len);
return -ENOMEM;
static void rbd_osd_req_callback(struct ceph_osd_request *osd_req,
struct ceph_msg *msg)
{
struct rbd_obj_request *obj_request = osd_req->r_priv;
struct ceph_osd_reply_head *reply_head;
struct ceph_osd_op *op;
u32 num_ops;
u16 opcode;
rbd_assert(osd_req == obj_request->osd_req);
rbd_assert(!!obj_request->img_request ^
(obj_request->which == BAD_WHICH));
obj_request->xferred = le32_to_cpu(msg->hdr.data_len);
reply_head = msg->front.iov_base;
obj_request->result = (s32) le32_to_cpu(reply_head->result);
obj_request->version = le64_to_cpu(osd_req->r_reassert_version.version);
num_ops = le32_to_cpu(reply_head->num_ops);
WARN_ON(num_ops != 1); /* For now */
op = &reply_head->ops[0];
opcode = le16_to_cpu(op->op);
switch (opcode) {
case CEPH_OSD_OP_READ:
rbd_osd_read_callback(obj_request, op);
break;
case CEPH_OSD_OP_WRITE:
rbd_osd_write_callback(obj_request, op);
break;
case CEPH_OSD_OP_STAT:
rbd_osd_stat_callback(obj_request, op);
break;
case CEPH_OSD_OP_CALL:
case CEPH_OSD_OP_NOTIFY_ACK:
case CEPH_OSD_OP_WATCH:
rbd_osd_trivial_callback(obj_request, op);
break;
default:
rbd_warn(NULL, "%s: unsupported op %hu\n",
obj_request->object_name, (unsigned short) opcode);
break;
}
if (coll) {
req_data->coll = coll;
req_data->coll_index = coll_index;
if (obj_request_done_test(obj_request))
rbd_obj_request_complete(obj_request);
}
static struct ceph_osd_request *rbd_osd_req_create(
struct rbd_device *rbd_dev,
bool write_request,
struct rbd_obj_request *obj_request,
struct ceph_osd_req_op *op)
{
struct rbd_img_request *img_request = obj_request->img_request;
struct ceph_snap_context *snapc = NULL;
struct ceph_osd_client *osdc;
struct ceph_osd_request *osd_req;
struct timespec now;
struct timespec *mtime;
u64 snap_id = CEPH_NOSNAP;
u64 offset = obj_request->offset;
u64 length = obj_request->length;
if (img_request) {
rbd_assert(img_request->write_request == write_request);
if (img_request->write_request)
snapc = img_request->snapc;
else
snap_id = img_request->snap_id;
}
dout("rbd_do_request object_name=%s ofs=%llu len=%llu coll=%p[%d]\n",
object_name, (unsigned long long) ofs,
(unsigned long long) len, coll, coll_index);
/* Allocate and initialize the request, for the single op */
osdc = &rbd_dev->rbd_client->client->osdc;
req = ceph_osdc_alloc_request(osdc, flags, snapc, ops,
false, GFP_NOIO, pages, bio);
if (!req) {
ret = -ENOMEM;
goto done_pages;
osd_req = ceph_osdc_alloc_request(osdc, snapc, 1, false, GFP_ATOMIC);
if (!osd_req)
return NULL; /* ENOMEM */
rbd_assert(obj_request_type_valid(obj_request->type));
switch (obj_request->type) {
case OBJ_REQUEST_NODATA:
break; /* Nothing to do */
case OBJ_REQUEST_BIO:
rbd_assert(obj_request->bio_list != NULL);
osd_req->r_bio = obj_request->bio_list;
break;
case OBJ_REQUEST_PAGES:
osd_req->r_pages = obj_request->pages;
osd_req->r_num_pages = obj_request->page_count;
osd_req->r_page_alignment = offset & ~PAGE_MASK;
break;
}
req->r_callback = rbd_cb;
if (write_request) {
osd_req->r_flags = CEPH_OSD_FLAG_WRITE | CEPH_OSD_FLAG_ONDISK;
now = CURRENT_TIME;
mtime = &now;
} else {
osd_req->r_flags = CEPH_OSD_FLAG_READ;
mtime = NULL; /* not needed for reads */
offset = 0; /* These are not used... */
length = 0; /* ...for osd read requests */
}
req_data->rq = rq;
req_data->bio = bio;
req_data->pages = pages;
req_data->len = len;
osd_req->r_callback = rbd_osd_req_callback;
osd_req->r_priv = obj_request;
req->r_priv = req_data;
osd_req->r_oid_len = strlen(obj_request->object_name);
rbd_assert(osd_req->r_oid_len < sizeof (osd_req->r_oid));
memcpy(osd_req->r_oid, obj_request->object_name, osd_req->r_oid_len);
reqhead = req->r_request->front.iov_base;
reqhead->snapid = cpu_to_le64(CEPH_NOSNAP);
osd_req->r_file_layout = rbd_dev->layout; /* struct */
strncpy(req->r_oid, object_name, sizeof(req->r_oid));
req->r_oid_len = strlen(req->r_oid);
/* osd_req will get its own reference to snapc (if non-null) */
layout = &req->r_file_layout;
memset(layout, 0, sizeof(*layout));
layout->fl_stripe_unit = cpu_to_le32(1 << RBD_MAX_OBJ_ORDER);
layout->fl_stripe_count = cpu_to_le32(1);
layout->fl_object_size = cpu_to_le32(1 << RBD_MAX_OBJ_ORDER);
layout->fl_pg_pool = cpu_to_le32((int) rbd_dev->spec->pool_id);
ret = ceph_calc_raw_layout(osdc, layout, snapid, ofs, &len, &bno,
req, ops);
rbd_assert(ret == 0);
ceph_osdc_build_request(osd_req, offset, length, 1, op,
snapc, snap_id, mtime);
ceph_osdc_build_request(req, ofs, &len,
ops,
snapc,
&mtime,
req->r_oid, req->r_oid_len);
return osd_req;
}
if (linger_req) {
ceph_osdc_set_request_linger(osdc, req);
*linger_req = req;
}
static void rbd_osd_req_destroy(struct ceph_osd_request *osd_req)
{
ceph_osdc_put_request(osd_req);
}
ret = ceph_osdc_start_request(osdc, req, false);
if (ret < 0)
goto done_err;
/* object_name is assumed to be a non-null pointer and NUL-terminated */
if (!rbd_cb) {
ret = ceph_osdc_wait_request(osdc, req);
if (ver)
*ver = le64_to_cpu(req->r_reassert_version.version);
dout("reassert_ver=%llu\n",
(unsigned long long)
le64_to_cpu(req->r_reassert_version.version));
ceph_osdc_put_request(req);
}
return ret;
static struct rbd_obj_request *rbd_obj_request_create(const char *object_name,
u64 offset, u64 length,
enum obj_request_type type)
{
struct rbd_obj_request *obj_request;
size_t size;
char *name;
done_err:
bio_chain_put(req_data->bio);
ceph_osdc_put_request(req);
done_pages:
rbd_coll_end_req(req_data, ret, len);
kfree(req_data);
return ret;
rbd_assert(obj_request_type_valid(type));
size = strlen(object_name) + 1;
obj_request = kzalloc(sizeof (*obj_request) + size, GFP_KERNEL);
if (!obj_request)
return NULL;
name = (char *)(obj_request + 1);
obj_request->object_name = memcpy(name, object_name, size);
obj_request->offset = offset;
obj_request->length = length;
obj_request->which = BAD_WHICH;
obj_request->type = type;
INIT_LIST_HEAD(&obj_request->links);
obj_request_done_init(obj_request);
init_completion(&obj_request->completion);
kref_init(&obj_request->kref);
return obj_request;
}
/*
* Ceph osd op callback
*/
static void rbd_req_cb(struct ceph_osd_request *req, struct ceph_msg *msg)
static void rbd_obj_request_destroy(struct kref *kref)
{
struct rbd_request *req_data = req->r_priv;
struct ceph_osd_reply_head *replyhead;
struct ceph_osd_op *op;
__s32 rc;
u64 bytes;
int read_op;
struct rbd_obj_request *obj_request;
obj_request = container_of(kref, struct rbd_obj_request, kref);
/* parse reply */
replyhead = msg->front.iov_base;
WARN_ON(le32_to_cpu(replyhead->num_ops) == 0);
op = (void *)(replyhead + 1);
rc = le32_to_cpu(replyhead->result);
bytes = le64_to_cpu(op->extent.length);
read_op = (le16_to_cpu(op->op) == CEPH_OSD_OP_READ);
rbd_assert(obj_request->img_request == NULL);
rbd_assert(obj_request->which == BAD_WHICH);
dout("rbd_req_cb bytes=%llu readop=%d rc=%d\n",
(unsigned long long) bytes, read_op, (int) rc);
if (obj_request->osd_req)
rbd_osd_req_destroy(obj_request->osd_req);
if (rc == -ENOENT && read_op) {
zero_bio_chain(req_data->bio, 0);
rc = 0;
} else if (rc == 0 && read_op && bytes < req_data->len) {
zero_bio_chain(req_data->bio, bytes);
bytes = req_data->len;
rbd_assert(obj_request_type_valid(obj_request->type));
switch (obj_request->type) {
case OBJ_REQUEST_NODATA:
break; /* Nothing to do */
case OBJ_REQUEST_BIO:
if (obj_request->bio_list)
bio_chain_put(obj_request->bio_list);
break;
case OBJ_REQUEST_PAGES:
if (obj_request->pages)
ceph_release_page_vector(obj_request->pages,
obj_request->page_count);
break;
}
rbd_coll_end_req(req_data, rc, bytes);
kfree(obj_request);
}
/*
* Caller is responsible for filling in the list of object requests
* that comprises the image request, and the Linux request pointer
* (if there is one).
*/
struct rbd_img_request *rbd_img_request_create(struct rbd_device *rbd_dev,
u64 offset, u64 length,
bool write_request)
{
struct rbd_img_request *img_request;
struct ceph_snap_context *snapc = NULL;
img_request = kmalloc(sizeof (*img_request), GFP_ATOMIC);
if (!img_request)
return NULL;
if (req_data->bio)
bio_chain_put(req_data->bio);
if (write_request) {
down_read(&rbd_dev->header_rwsem);
snapc = ceph_get_snap_context(rbd_dev->header.snapc);
up_read(&rbd_dev->header_rwsem);
if (WARN_ON(!snapc)) {
kfree(img_request);
return NULL; /* Shouldn't happen */
}
}
ceph_osdc_put_request(req);
kfree(req_data);
img_request->rq = NULL;
img_request->rbd_dev = rbd_dev;
img_request->offset = offset;
img_request->length = length;
img_request->write_request = write_request;
if (write_request)
img_request->snapc = snapc;
else
img_request->snap_id = rbd_dev->spec->snap_id;
spin_lock_init(&img_request->completion_lock);
img_request->next_completion = 0;
img_request->callback = NULL;
img_request->obj_request_count = 0;
INIT_LIST_HEAD(&img_request->obj_requests);
kref_init(&img_request->kref);
rbd_img_request_get(img_request); /* Avoid a warning */
rbd_img_request_put(img_request); /* TEMPORARY */
return img_request;
}
static void rbd_simple_req_cb(struct ceph_osd_request *req, struct ceph_msg *msg)
static void rbd_img_request_destroy(struct kref *kref)
{
ceph_osdc_put_request(req);
struct rbd_img_request *img_request;
struct rbd_obj_request *obj_request;
struct rbd_obj_request *next_obj_request;
img_request = container_of(kref, struct rbd_img_request, kref);
for_each_obj_request_safe(img_request, obj_request, next_obj_request)
rbd_img_obj_request_del(img_request, obj_request);
rbd_assert(img_request->obj_request_count == 0);
if (img_request->write_request)
ceph_put_snap_context(img_request->snapc);
kfree(img_request);
}
/*
* Do a synchronous ceph osd operation
*/
static int rbd_req_sync_op(struct rbd_device *rbd_dev,
struct ceph_snap_context *snapc,
u64 snapid,
int flags,
struct ceph_osd_req_op *ops,
const char *object_name,
u64 ofs, u64 inbound_size,
char *inbound,
struct ceph_osd_request **linger_req,
u64 *ver)
static int rbd_img_request_fill_bio(struct rbd_img_request *img_request,
struct bio *bio_list)
{
int ret;
struct page **pages;
int num_pages;
struct rbd_device *rbd_dev = img_request->rbd_dev;
struct rbd_obj_request *obj_request = NULL;
struct rbd_obj_request *next_obj_request;
unsigned int bio_offset;
u64 image_offset;
u64 resid;
u16 opcode;
rbd_assert(ops != NULL);
opcode = img_request->write_request ? CEPH_OSD_OP_WRITE
: CEPH_OSD_OP_READ;
bio_offset = 0;
image_offset = img_request->offset;
rbd_assert(image_offset == bio_list->bi_sector << SECTOR_SHIFT);
resid = img_request->length;
while (resid) {
const char *object_name;
unsigned int clone_size;
struct ceph_osd_req_op *op;
u64 offset;
u64 length;
object_name = rbd_segment_name(rbd_dev, image_offset);
if (!object_name)
goto out_unwind;
offset = rbd_segment_offset(rbd_dev, image_offset);
length = rbd_segment_length(rbd_dev, image_offset, resid);
obj_request = rbd_obj_request_create(object_name,
offset, length,
OBJ_REQUEST_BIO);
kfree(object_name); /* object request has its own copy */
if (!obj_request)
goto out_unwind;
rbd_assert(length <= (u64) UINT_MAX);
clone_size = (unsigned int) length;
obj_request->bio_list = bio_chain_clone_range(&bio_list,
&bio_offset, clone_size,
GFP_ATOMIC);
if (!obj_request->bio_list)
goto out_partial;
num_pages = calc_pages_for(ofs, inbound_size);
pages = ceph_alloc_page_vector(num_pages, GFP_KERNEL);
if (IS_ERR(pages))
return PTR_ERR(pages);
/*
* Build up the op to use in building the osd
* request. Note that the contents of the op are
* copied by rbd_osd_req_create().
*/
op = rbd_osd_req_op_create(opcode, offset, length);
if (!op)
goto out_partial;
obj_request->osd_req = rbd_osd_req_create(rbd_dev,
img_request->write_request,
obj_request, op);
rbd_osd_req_op_destroy(op);
if (!obj_request->osd_req)
goto out_partial;
/* status and version are initially zero-filled */
rbd_img_obj_request_add(img_request, obj_request);
image_offset += length;
resid -= length;
}
ret = rbd_do_request(NULL, rbd_dev, snapc, snapid,
object_name, ofs, inbound_size, NULL,
pages, num_pages,
flags,
ops,
NULL, 0,
NULL,
linger_req, ver);
if (ret < 0)
goto done;
return 0;
if ((flags & CEPH_OSD_FLAG_READ) && inbound)
ret = ceph_copy_from_page_vector(pages, inbound, ofs, ret);
out_partial:
rbd_obj_request_put(obj_request);
out_unwind:
for_each_obj_request_safe(img_request, obj_request, next_obj_request)
rbd_obj_request_put(obj_request);
done:
ceph_release_page_vector(pages, num_pages);
return ret;
return -ENOMEM;
}
/*
* Do an asynchronous ceph osd operation
*/
static int rbd_do_op(struct request *rq,
struct rbd_device *rbd_dev,
struct ceph_snap_context *snapc,
u64 ofs, u64 len,
struct bio *bio,
struct rbd_req_coll *coll,
int coll_index)
{
char *seg_name;
u64 seg_ofs;
u64 seg_len;
int ret;
struct ceph_osd_req_op *ops;
u32 payload_len;
int opcode;
int flags;
u64 snapid;
seg_name = rbd_segment_name(rbd_dev, ofs);
if (!seg_name)
return -ENOMEM;
seg_len = rbd_segment_length(rbd_dev, ofs, len);
seg_ofs = rbd_segment_offset(rbd_dev, ofs);
if (rq_data_dir(rq) == WRITE) {
opcode = CEPH_OSD_OP_WRITE;
flags = CEPH_OSD_FLAG_WRITE|CEPH_OSD_FLAG_ONDISK;
snapid = CEPH_NOSNAP;
payload_len = seg_len;
} else {
opcode = CEPH_OSD_OP_READ;
flags = CEPH_OSD_FLAG_READ;
snapc = NULL;
snapid = rbd_dev->spec->snap_id;
payload_len = 0;
}
static void rbd_img_obj_callback(struct rbd_obj_request *obj_request)
{
struct rbd_img_request *img_request;
u32 which = obj_request->which;
bool more = true;
img_request = obj_request->img_request;
rbd_assert(img_request != NULL);
rbd_assert(img_request->rq != NULL);
rbd_assert(which != BAD_WHICH);
rbd_assert(which < img_request->obj_request_count);
rbd_assert(which >= img_request->next_completion);
spin_lock_irq(&img_request->completion_lock);
if (which != img_request->next_completion)
goto out;
ret = -ENOMEM;
ops = rbd_create_rw_ops(1, opcode, payload_len);
if (!ops)
goto done;
for_each_obj_request_from(img_request, obj_request) {
unsigned int xferred;
int result;
/* we've taken care of segment sizes earlier when we
cloned the bios. We should never have a segment
truncated at this point */
rbd_assert(seg_len == len);
rbd_assert(more);
rbd_assert(which < img_request->obj_request_count);
ret = rbd_do_request(rq, rbd_dev, snapc, snapid,
seg_name, seg_ofs, seg_len,
bio,
NULL, 0,
flags,
ops,
coll, coll_index,
rbd_req_cb, 0, NULL);
if (!obj_request_done_test(obj_request))
break;
rbd_destroy_ops(ops);
done:
kfree(seg_name);
return ret;
rbd_assert(obj_request->xferred <= (u64) UINT_MAX);
xferred = (unsigned int) obj_request->xferred;
result = (int) obj_request->result;
if (result)
rbd_warn(NULL, "obj_request %s result %d xferred %u\n",
img_request->write_request ? "write" : "read",
result, xferred);
more = blk_end_request(img_request->rq, result, xferred);
which++;
}
rbd_assert(more ^ (which == img_request->obj_request_count));
img_request->next_completion = which;
out:
spin_unlock_irq(&img_request->completion_lock);
if (!more)
rbd_img_request_complete(img_request);
}
/*
* Request sync osd read
*/
static int rbd_req_sync_read(struct rbd_device *rbd_dev,
u64 snapid,
const char *object_name,
u64 ofs, u64 len,
char *buf,
u64 *ver)
static int rbd_img_request_submit(struct rbd_img_request *img_request)
{
struct ceph_osd_req_op *ops;
int ret;
ops = rbd_create_rw_ops(1, CEPH_OSD_OP_READ, 0);
if (!ops)
return -ENOMEM;
struct rbd_device *rbd_dev = img_request->rbd_dev;
struct ceph_osd_client *osdc = &rbd_dev->rbd_client->client->osdc;
struct rbd_obj_request *obj_request;
ret = rbd_req_sync_op(rbd_dev, NULL,
snapid,
CEPH_OSD_FLAG_READ,
ops, object_name, ofs, len, buf, NULL, ver);
rbd_destroy_ops(ops);
for_each_obj_request(img_request, obj_request) {
int ret;
obj_request->callback = rbd_img_obj_callback;
ret = rbd_obj_request_submit(osdc, obj_request);
if (ret)
return ret;
/*
* The image request has its own reference to each
* of its object requests, so we can safely drop the
* initial one here.
*/
rbd_obj_request_put(obj_request);
}
return 0;
}
/*
* Request sync osd watch
*/
static int rbd_req_sync_notify_ack(struct rbd_device *rbd_dev,
u64 ver,
u64 notify_id)
static int rbd_obj_notify_ack(struct rbd_device *rbd_dev,
u64 ver, u64 notify_id)
{
struct ceph_osd_req_op *ops;
struct rbd_obj_request *obj_request;
struct ceph_osd_req_op *op;
struct ceph_osd_client *osdc;
int ret;
ops = rbd_create_rw_ops(1, CEPH_OSD_OP_NOTIFY_ACK, 0);
if (!ops)
obj_request = rbd_obj_request_create(rbd_dev->header_name, 0, 0,
OBJ_REQUEST_NODATA);
if (!obj_request)
return -ENOMEM;
ops[0].watch.ver = cpu_to_le64(ver);
ops[0].watch.cookie = notify_id;
ops[0].watch.flag = 0;
ret = -ENOMEM;
op = rbd_osd_req_op_create(CEPH_OSD_OP_NOTIFY_ACK, notify_id, ver);
if (!op)
goto out;
obj_request->osd_req = rbd_osd_req_create(rbd_dev, false,
obj_request, op);
rbd_osd_req_op_destroy(op);
if (!obj_request->osd_req)
goto out;
ret = rbd_do_request(NULL, rbd_dev, NULL, CEPH_NOSNAP,
rbd_dev->header_name, 0, 0, NULL,
NULL, 0,
CEPH_OSD_FLAG_READ,
ops,
NULL, 0,
rbd_simple_req_cb, 0, NULL);
osdc = &rbd_dev->rbd_client->client->osdc;
obj_request->callback = rbd_obj_request_put;
ret = rbd_obj_request_submit(osdc, obj_request);
out:
if (ret)
rbd_obj_request_put(obj_request);
rbd_destroy_ops(ops);
return ret;
}
......@@ -1386,90 +1738,98 @@ static void rbd_watch_cb(u64 ver, u64 notify_id, u8 opcode, void *data)
(unsigned int) opcode);
rc = rbd_dev_refresh(rbd_dev, &hver);
if (rc)
pr_warning(RBD_DRV_NAME "%d got notification but failed to "
" update snaps: %d\n", rbd_dev->major, rc);
rbd_warn(rbd_dev, "got notification but failed to "
" update snaps: %d\n", rc);
rbd_req_sync_notify_ack(rbd_dev, hver, notify_id);
rbd_obj_notify_ack(rbd_dev, hver, notify_id);
}
/*
* Request sync osd watch
* Request sync osd watch/unwatch. The value of "start" determines
* whether a watch request is being initiated or torn down.
*/
static int rbd_req_sync_watch(struct rbd_device *rbd_dev)
static int rbd_dev_header_watch_sync(struct rbd_device *rbd_dev, int start)
{
struct ceph_osd_req_op *ops;
struct ceph_osd_client *osdc = &rbd_dev->rbd_client->client->osdc;
struct rbd_obj_request *obj_request;
struct ceph_osd_req_op *op;
int ret;
ops = rbd_create_rw_ops(1, CEPH_OSD_OP_WATCH, 0);
if (!ops)
return -ENOMEM;
ret = ceph_osdc_create_event(osdc, rbd_watch_cb, 0,
(void *)rbd_dev, &rbd_dev->watch_event);
if (ret < 0)
goto fail;
ops[0].watch.ver = cpu_to_le64(rbd_dev->header.obj_version);
ops[0].watch.cookie = cpu_to_le64(rbd_dev->watch_event->cookie);
ops[0].watch.flag = 1;
ret = rbd_req_sync_op(rbd_dev, NULL,
CEPH_NOSNAP,
CEPH_OSD_FLAG_WRITE | CEPH_OSD_FLAG_ONDISK,
ops,
rbd_dev->header_name,
0, 0, NULL,
&rbd_dev->watch_request, NULL);
rbd_assert(start ^ !!rbd_dev->watch_event);
rbd_assert(start ^ !!rbd_dev->watch_request);
if (start) {
ret = ceph_osdc_create_event(osdc, rbd_watch_cb, rbd_dev,
&rbd_dev->watch_event);
if (ret < 0)
goto fail_event;
rbd_destroy_ops(ops);
return 0;
fail_event:
ceph_osdc_cancel_event(rbd_dev->watch_event);
rbd_dev->watch_event = NULL;
fail:
rbd_destroy_ops(ops);
return ret;
}
/*
* Request sync osd unwatch
*/
static int rbd_req_sync_unwatch(struct rbd_device *rbd_dev)
{
struct ceph_osd_req_op *ops;
int ret;
rbd_assert(rbd_dev->watch_event != NULL);
}
ops = rbd_create_rw_ops(1, CEPH_OSD_OP_WATCH, 0);
if (!ops)
return -ENOMEM;
ret = -ENOMEM;
obj_request = rbd_obj_request_create(rbd_dev->header_name, 0, 0,
OBJ_REQUEST_NODATA);
if (!obj_request)
goto out_cancel;
op = rbd_osd_req_op_create(CEPH_OSD_OP_WATCH,
rbd_dev->watch_event->cookie,
rbd_dev->header.obj_version, start);
if (!op)
goto out_cancel;
obj_request->osd_req = rbd_osd_req_create(rbd_dev, true,
obj_request, op);
rbd_osd_req_op_destroy(op);
if (!obj_request->osd_req)
goto out_cancel;
if (start)
ceph_osdc_set_request_linger(osdc, obj_request->osd_req);
else
ceph_osdc_unregister_linger_request(osdc,
rbd_dev->watch_request->osd_req);
ret = rbd_obj_request_submit(osdc, obj_request);
if (ret)
goto out_cancel;
ret = rbd_obj_request_wait(obj_request);
if (ret)
goto out_cancel;
ret = obj_request->result;
if (ret)
goto out_cancel;
ops[0].watch.ver = 0;
ops[0].watch.cookie = cpu_to_le64(rbd_dev->watch_event->cookie);
ops[0].watch.flag = 0;
/*
* A watch request is set to linger, so the underlying osd
* request won't go away until we unregister it. We retain
* a pointer to the object request during that time (in
* rbd_dev->watch_request), so we'll keep a reference to
* it. We'll drop that reference (below) after we've
* unregistered it.
*/
if (start) {
rbd_dev->watch_request = obj_request;
ret = rbd_req_sync_op(rbd_dev, NULL,
CEPH_NOSNAP,
CEPH_OSD_FLAG_WRITE | CEPH_OSD_FLAG_ONDISK,
ops,
rbd_dev->header_name,
0, 0, NULL, NULL, NULL);
return 0;
}
/* We have successfully torn down the watch request */
rbd_destroy_ops(ops);
rbd_obj_request_put(rbd_dev->watch_request);
rbd_dev->watch_request = NULL;
out_cancel:
/* Cancel the event if we're tearing down, or on error */
ceph_osdc_cancel_event(rbd_dev->watch_event);
rbd_dev->watch_event = NULL;
if (obj_request)
rbd_obj_request_put(obj_request);
return ret;
}
/*
* Synchronous osd object method call
*/
static int rbd_req_sync_exec(struct rbd_device *rbd_dev,
static int rbd_obj_method_sync(struct rbd_device *rbd_dev,
const char *object_name,
const char *class_name,
const char *method_name,
......@@ -1477,169 +1837,143 @@ static int rbd_req_sync_exec(struct rbd_device *rbd_dev,
size_t outbound_size,
char *inbound,
size_t inbound_size,
int flags,
u64 *ver)
u64 *version)
{
struct ceph_osd_req_op *ops;
int class_name_len = strlen(class_name);
int method_name_len = strlen(method_name);
int payload_size;
struct rbd_obj_request *obj_request;
struct ceph_osd_client *osdc;
struct ceph_osd_req_op *op;
struct page **pages;
u32 page_count;
int ret;
/*
* Any input parameters required by the method we're calling
* will be sent along with the class and method names as
* part of the message payload. That data and its size are
* supplied via the indata and indata_len fields (named from
* the perspective of the server side) in the OSD request
* operation.
*/
payload_size = class_name_len + method_name_len + outbound_size;
ops = rbd_create_rw_ops(1, CEPH_OSD_OP_CALL, payload_size);
if (!ops)
return -ENOMEM;
* Method calls are ultimately read operations but they
* don't involve object data (so no offset or length).
* The result should placed into the inbound buffer
* provided. They also supply outbound data--parameters for
* the object method. Currently if this is present it will
* be a snapshot id.
*/
page_count = (u32) calc_pages_for(0, inbound_size);
pages = ceph_alloc_page_vector(page_count, GFP_KERNEL);
if (IS_ERR(pages))
return PTR_ERR(pages);
ops[0].cls.class_name = class_name;
ops[0].cls.class_len = (__u8) class_name_len;
ops[0].cls.method_name = method_name;
ops[0].cls.method_len = (__u8) method_name_len;
ops[0].cls.argc = 0;
ops[0].cls.indata = outbound;
ops[0].cls.indata_len = outbound_size;
ret = -ENOMEM;
obj_request = rbd_obj_request_create(object_name, 0, 0,
OBJ_REQUEST_PAGES);
if (!obj_request)
goto out;
ret = rbd_req_sync_op(rbd_dev, NULL,
CEPH_NOSNAP,
flags, ops,
object_name, 0, inbound_size, inbound,
NULL, ver);
obj_request->pages = pages;
obj_request->page_count = page_count;
rbd_destroy_ops(ops);
op = rbd_osd_req_op_create(CEPH_OSD_OP_CALL, class_name,
method_name, outbound, outbound_size);
if (!op)
goto out;
obj_request->osd_req = rbd_osd_req_create(rbd_dev, false,
obj_request, op);
rbd_osd_req_op_destroy(op);
if (!obj_request->osd_req)
goto out;
dout("cls_exec returned %d\n", ret);
return ret;
}
osdc = &rbd_dev->rbd_client->client->osdc;
ret = rbd_obj_request_submit(osdc, obj_request);
if (ret)
goto out;
ret = rbd_obj_request_wait(obj_request);
if (ret)
goto out;
static struct rbd_req_coll *rbd_alloc_coll(int num_reqs)
{
struct rbd_req_coll *coll =
kzalloc(sizeof(struct rbd_req_coll) +
sizeof(struct rbd_req_status) * num_reqs,
GFP_ATOMIC);
ret = obj_request->result;
if (ret < 0)
goto out;
ret = 0;
ceph_copy_from_page_vector(pages, inbound, 0, obj_request->xferred);
if (version)
*version = obj_request->version;
out:
if (obj_request)
rbd_obj_request_put(obj_request);
else
ceph_release_page_vector(pages, page_count);
if (!coll)
return NULL;
coll->total = num_reqs;
kref_init(&coll->kref);
return coll;
return ret;
}
/*
* block device queue callback
*/
static void rbd_rq_fn(struct request_queue *q)
static void rbd_request_fn(struct request_queue *q)
{
struct rbd_device *rbd_dev = q->queuedata;
bool read_only = rbd_dev->mapping.read_only;
struct request *rq;
int result;
while ((rq = blk_fetch_request(q))) {
struct bio *bio;
bool do_write;
unsigned int size;
u64 ofs;
int num_segs, cur_seg = 0;
struct rbd_req_coll *coll;
struct ceph_snap_context *snapc;
unsigned int bio_offset;
bool write_request = rq_data_dir(rq) == WRITE;
struct rbd_img_request *img_request;
u64 offset;
u64 length;
dout("fetched request\n");
/* Ignore any non-FS requests that filter through. */
/* filter out block requests we don't understand */
if ((rq->cmd_type != REQ_TYPE_FS)) {
if (rq->cmd_type != REQ_TYPE_FS) {
__blk_end_request_all(rq, 0);
continue;
}
/* deduce our operation (read, write) */
do_write = (rq_data_dir(rq) == WRITE);
if (do_write && rbd_dev->mapping.read_only) {
__blk_end_request_all(rq, -EROFS);
continue;
}
spin_unlock_irq(q->queue_lock);
down_read(&rbd_dev->header_rwsem);
/* Disallow writes to a read-only device */
if (!rbd_dev->exists) {
rbd_assert(rbd_dev->spec->snap_id != CEPH_NOSNAP);
up_read(&rbd_dev->header_rwsem);
dout("request for non-existent snapshot");
spin_lock_irq(q->queue_lock);
__blk_end_request_all(rq, -ENXIO);
continue;
if (write_request) {
result = -EROFS;
if (read_only)
goto end_request;
rbd_assert(rbd_dev->spec->snap_id == CEPH_NOSNAP);
}
snapc = ceph_get_snap_context(rbd_dev->header.snapc);
up_read(&rbd_dev->header_rwsem);
size = blk_rq_bytes(rq);
ofs = blk_rq_pos(rq) * SECTOR_SIZE;
bio = rq->bio;
dout("%s 0x%x bytes at 0x%llx\n",
do_write ? "write" : "read",
size, (unsigned long long) blk_rq_pos(rq) * SECTOR_SIZE);
num_segs = rbd_get_num_segments(&rbd_dev->header, ofs, size);
if (num_segs <= 0) {
spin_lock_irq(q->queue_lock);
__blk_end_request_all(rq, num_segs);
ceph_put_snap_context(snapc);
continue;
}
coll = rbd_alloc_coll(num_segs);
if (!coll) {
spin_lock_irq(q->queue_lock);
__blk_end_request_all(rq, -ENOMEM);
ceph_put_snap_context(snapc);
continue;
/*
* Quit early if the mapped snapshot no longer
* exists. It's still possible the snapshot will
* have disappeared by the time our request arrives
* at the osd, but there's no sense in sending it if
* we already know.
*/
if (!test_bit(RBD_DEV_FLAG_EXISTS, &rbd_dev->flags)) {
dout("request for non-existent snapshot");
rbd_assert(rbd_dev->spec->snap_id != CEPH_NOSNAP);
result = -ENXIO;
goto end_request;
}
bio_offset = 0;
do {
u64 limit = rbd_segment_length(rbd_dev, ofs, size);
unsigned int chain_size;
struct bio *bio_chain;
BUG_ON(limit > (u64) UINT_MAX);
chain_size = (unsigned int) limit;
dout("rq->bio->bi_vcnt=%hu\n", rq->bio->bi_vcnt);
kref_get(&coll->kref);
offset = (u64) blk_rq_pos(rq) << SECTOR_SHIFT;
length = (u64) blk_rq_bytes(rq);
/* Pass a cloned bio chain via an osd request */
result = -EINVAL;
if (WARN_ON(offset && length > U64_MAX - offset + 1))
goto end_request; /* Shouldn't happen */
bio_chain = bio_chain_clone_range(&bio,
&bio_offset, chain_size,
GFP_ATOMIC);
if (bio_chain)
(void) rbd_do_op(rq, rbd_dev, snapc,
ofs, chain_size,
bio_chain, coll, cur_seg);
else
rbd_coll_end_req_index(rq, coll, cur_seg,
-ENOMEM, chain_size);
size -= chain_size;
ofs += chain_size;
result = -ENOMEM;
img_request = rbd_img_request_create(rbd_dev, offset, length,
write_request);
if (!img_request)
goto end_request;
cur_seg++;
} while (size > 0);
kref_put(&coll->kref, rbd_coll_release);
img_request->rq = rq;
result = rbd_img_request_fill_bio(img_request, rq->bio);
if (!result)
result = rbd_img_request_submit(img_request);
if (result)
rbd_img_request_put(img_request);
end_request:
spin_lock_irq(q->queue_lock);
ceph_put_snap_context(snapc);
if (result < 0) {
rbd_warn(rbd_dev, "obj_request %s result %d\n",
write_request ? "write" : "read", result);
__blk_end_request_all(rq, result);
}
}
}
......@@ -1703,6 +2037,71 @@ static void rbd_free_disk(struct rbd_device *rbd_dev)
put_disk(disk);
}
static int rbd_obj_read_sync(struct rbd_device *rbd_dev,
const char *object_name,
u64 offset, u64 length,
char *buf, u64 *version)
{
struct ceph_osd_req_op *op;
struct rbd_obj_request *obj_request;
struct ceph_osd_client *osdc;
struct page **pages = NULL;
u32 page_count;
size_t size;
int ret;
page_count = (u32) calc_pages_for(offset, length);
pages = ceph_alloc_page_vector(page_count, GFP_KERNEL);
if (IS_ERR(pages))
ret = PTR_ERR(pages);
ret = -ENOMEM;
obj_request = rbd_obj_request_create(object_name, offset, length,
OBJ_REQUEST_PAGES);
if (!obj_request)
goto out;
obj_request->pages = pages;
obj_request->page_count = page_count;
op = rbd_osd_req_op_create(CEPH_OSD_OP_READ, offset, length);
if (!op)
goto out;
obj_request->osd_req = rbd_osd_req_create(rbd_dev, false,
obj_request, op);
rbd_osd_req_op_destroy(op);
if (!obj_request->osd_req)
goto out;
osdc = &rbd_dev->rbd_client->client->osdc;
ret = rbd_obj_request_submit(osdc, obj_request);
if (ret)
goto out;
ret = rbd_obj_request_wait(obj_request);
if (ret)
goto out;
ret = obj_request->result;
if (ret < 0)
goto out;
rbd_assert(obj_request->xferred <= (u64) SIZE_MAX);
size = (size_t) obj_request->xferred;
ceph_copy_from_page_vector(pages, buf, 0, size);
rbd_assert(size <= (size_t) INT_MAX);
ret = (int) size;
if (version)
*version = obj_request->version;
out:
if (obj_request)
rbd_obj_request_put(obj_request);
else
ceph_release_page_vector(pages, page_count);
return ret;
}
/*
* Read the complete header for the given rbd device.
*
......@@ -1741,24 +2140,20 @@ rbd_dev_v1_header_read(struct rbd_device *rbd_dev, u64 *version)
if (!ondisk)
return ERR_PTR(-ENOMEM);
ret = rbd_req_sync_read(rbd_dev, CEPH_NOSNAP,
rbd_dev->header_name,
ret = rbd_obj_read_sync(rbd_dev, rbd_dev->header_name,
0, size,
(char *) ondisk, version);
if (ret < 0)
goto out_err;
if (WARN_ON((size_t) ret < size)) {
ret = -ENXIO;
pr_warning("short header read for image %s"
" (want %zd got %d)\n",
rbd_dev->spec->image_name, size, ret);
rbd_warn(rbd_dev, "short header read (want %zd got %d)",
size, ret);
goto out_err;
}
if (!rbd_dev_ondisk_valid(ondisk)) {
ret = -ENXIO;
pr_warning("invalid header for image %s\n",
rbd_dev->spec->image_name);
rbd_warn(rbd_dev, "invalid header");
goto out_err;
}
......@@ -1895,8 +2290,7 @@ static int rbd_init_disk(struct rbd_device *rbd_dev)
disk->fops = &rbd_bd_ops;
disk->private_data = rbd_dev;
/* init rq */
q = blk_init_queue(rbd_rq_fn, &rbd_dev->lock);
q = blk_init_queue(rbd_request_fn, &rbd_dev->lock);
if (!q)
goto out_disk;
......@@ -2243,6 +2637,7 @@ struct rbd_device *rbd_dev_create(struct rbd_client *rbdc,
return NULL;
spin_lock_init(&rbd_dev->lock);
rbd_dev->flags = 0;
INIT_LIST_HEAD(&rbd_dev->node);
INIT_LIST_HEAD(&rbd_dev->snaps);
init_rwsem(&rbd_dev->header_rwsem);
......@@ -2250,6 +2645,13 @@ struct rbd_device *rbd_dev_create(struct rbd_client *rbdc,
rbd_dev->spec = spec;
rbd_dev->rbd_client = rbdc;
/* Initialize the layout used for all rbd requests */
rbd_dev->layout.fl_stripe_unit = cpu_to_le32(1 << RBD_MAX_OBJ_ORDER);
rbd_dev->layout.fl_stripe_count = cpu_to_le32(1);
rbd_dev->layout.fl_object_size = cpu_to_le32(1 << RBD_MAX_OBJ_ORDER);
rbd_dev->layout.fl_pg_pool = cpu_to_le32((u32) spec->pool_id);
return rbd_dev;
}
......@@ -2360,12 +2762,11 @@ static int _rbd_dev_v2_snap_size(struct rbd_device *rbd_dev, u64 snap_id,
__le64 size;
} __attribute__ ((packed)) size_buf = { 0 };
ret = rbd_req_sync_exec(rbd_dev, rbd_dev->header_name,
ret = rbd_obj_method_sync(rbd_dev, rbd_dev->header_name,
"rbd", "get_size",
(char *) &snapid, sizeof (snapid),
(char *) &size_buf, sizeof (size_buf),
CEPH_OSD_FLAG_READ, NULL);
dout("%s: rbd_req_sync_exec returned %d\n", __func__, ret);
(char *) &size_buf, sizeof (size_buf), NULL);
dout("%s: rbd_obj_method_sync returned %d\n", __func__, ret);
if (ret < 0)
return ret;
......@@ -2396,15 +2797,13 @@ static int rbd_dev_v2_object_prefix(struct rbd_device *rbd_dev)
if (!reply_buf)
return -ENOMEM;
ret = rbd_req_sync_exec(rbd_dev, rbd_dev->header_name,
ret = rbd_obj_method_sync(rbd_dev, rbd_dev->header_name,
"rbd", "get_object_prefix",
NULL, 0,
reply_buf, RBD_OBJ_PREFIX_LEN_MAX,
CEPH_OSD_FLAG_READ, NULL);
dout("%s: rbd_req_sync_exec returned %d\n", __func__, ret);
reply_buf, RBD_OBJ_PREFIX_LEN_MAX, NULL);
dout("%s: rbd_obj_method_sync returned %d\n", __func__, ret);
if (ret < 0)
goto out;
ret = 0; /* rbd_req_sync_exec() can return positive */
p = reply_buf;
rbd_dev->header.object_prefix = ceph_extract_encoded_string(&p,
......@@ -2435,12 +2834,12 @@ static int _rbd_dev_v2_snap_features(struct rbd_device *rbd_dev, u64 snap_id,
u64 incompat;
int ret;
ret = rbd_req_sync_exec(rbd_dev, rbd_dev->header_name,
ret = rbd_obj_method_sync(rbd_dev, rbd_dev->header_name,
"rbd", "get_features",
(char *) &snapid, sizeof (snapid),
(char *) &features_buf, sizeof (features_buf),
CEPH_OSD_FLAG_READ, NULL);
dout("%s: rbd_req_sync_exec returned %d\n", __func__, ret);
NULL);
dout("%s: rbd_obj_method_sync returned %d\n", __func__, ret);
if (ret < 0)
return ret;
......@@ -2474,7 +2873,6 @@ static int rbd_dev_v2_parent_info(struct rbd_device *rbd_dev)
void *end;
char *image_id;
u64 overlap;
size_t len = 0;
int ret;
parent_spec = rbd_spec_alloc();
......@@ -2492,12 +2890,11 @@ static int rbd_dev_v2_parent_info(struct rbd_device *rbd_dev)
}
snapid = cpu_to_le64(CEPH_NOSNAP);
ret = rbd_req_sync_exec(rbd_dev, rbd_dev->header_name,
ret = rbd_obj_method_sync(rbd_dev, rbd_dev->header_name,
"rbd", "get_parent",
(char *) &snapid, sizeof (snapid),
(char *) reply_buf, size,
CEPH_OSD_FLAG_READ, NULL);
dout("%s: rbd_req_sync_exec returned %d\n", __func__, ret);
(char *) reply_buf, size, NULL);
dout("%s: rbd_obj_method_sync returned %d\n", __func__, ret);
if (ret < 0)
goto out_err;
......@@ -2508,13 +2905,18 @@ static int rbd_dev_v2_parent_info(struct rbd_device *rbd_dev)
if (parent_spec->pool_id == CEPH_NOPOOL)
goto out; /* No parent? No problem. */
image_id = ceph_extract_encoded_string(&p, end, &len, GFP_KERNEL);
/* The ceph file layout needs to fit pool id in 32 bits */
ret = -EIO;
if (WARN_ON(parent_spec->pool_id > (u64) U32_MAX))
goto out;
image_id = ceph_extract_encoded_string(&p, end, NULL, GFP_KERNEL);
if (IS_ERR(image_id)) {
ret = PTR_ERR(image_id);
goto out_err;
}
parent_spec->image_id = image_id;
parent_spec->image_id_len = len;
ceph_decode_64_safe(&p, end, parent_spec->snap_id, out_err);
ceph_decode_64_safe(&p, end, overlap, out_err);
......@@ -2544,26 +2946,25 @@ static char *rbd_dev_image_name(struct rbd_device *rbd_dev)
rbd_assert(!rbd_dev->spec->image_name);
image_id_size = sizeof (__le32) + rbd_dev->spec->image_id_len;
len = strlen(rbd_dev->spec->image_id);
image_id_size = sizeof (__le32) + len;
image_id = kmalloc(image_id_size, GFP_KERNEL);
if (!image_id)
return NULL;
p = image_id;
end = (char *) image_id + image_id_size;
ceph_encode_string(&p, end, rbd_dev->spec->image_id,
(u32) rbd_dev->spec->image_id_len);
ceph_encode_string(&p, end, rbd_dev->spec->image_id, (u32) len);
size = sizeof (__le32) + RBD_IMAGE_NAME_LEN_MAX;
reply_buf = kmalloc(size, GFP_KERNEL);
if (!reply_buf)
goto out;
ret = rbd_req_sync_exec(rbd_dev, RBD_DIRECTORY,
ret = rbd_obj_method_sync(rbd_dev, RBD_DIRECTORY,
"rbd", "dir_get_name",
image_id, image_id_size,
(char *) reply_buf, size,
CEPH_OSD_FLAG_READ, NULL);
(char *) reply_buf, size, NULL);
if (ret < 0)
goto out;
p = reply_buf;
......@@ -2602,8 +3003,11 @@ static int rbd_dev_probe_update_spec(struct rbd_device *rbd_dev)
osdc = &rbd_dev->rbd_client->client->osdc;
name = ceph_pg_pool_name_by_id(osdc->osdmap, rbd_dev->spec->pool_id);
if (!name)
return -EIO; /* pool id too large (>= 2^31) */
if (!name) {
rbd_warn(rbd_dev, "there is no pool with id %llu",
rbd_dev->spec->pool_id); /* Really a BUG() */
return -EIO;
}
rbd_dev->spec->pool_name = kstrdup(name, GFP_KERNEL);
if (!rbd_dev->spec->pool_name)
......@@ -2612,19 +3016,17 @@ static int rbd_dev_probe_update_spec(struct rbd_device *rbd_dev)
/* Fetch the image name; tolerate failure here */
name = rbd_dev_image_name(rbd_dev);
if (name) {
rbd_dev->spec->image_name_len = strlen(name);
if (name)
rbd_dev->spec->image_name = (char *) name;
} else {
pr_warning(RBD_DRV_NAME "%d "
"unable to get image name for image id %s\n",
rbd_dev->major, rbd_dev->spec->image_id);
}
else
rbd_warn(rbd_dev, "unable to get image name");
/* Look up the snapshot name. */
name = rbd_snap_name(rbd_dev, rbd_dev->spec->snap_id);
if (!name) {
rbd_warn(rbd_dev, "no snapshot with id %llu",
rbd_dev->spec->snap_id); /* Really a BUG() */
ret = -EIO;
goto out_err;
}
......@@ -2665,12 +3067,11 @@ static int rbd_dev_v2_snap_context(struct rbd_device *rbd_dev, u64 *ver)
if (!reply_buf)
return -ENOMEM;
ret = rbd_req_sync_exec(rbd_dev, rbd_dev->header_name,
ret = rbd_obj_method_sync(rbd_dev, rbd_dev->header_name,
"rbd", "get_snapcontext",
NULL, 0,
reply_buf, size,
CEPH_OSD_FLAG_READ, ver);
dout("%s: rbd_req_sync_exec returned %d\n", __func__, ret);
reply_buf, size, ver);
dout("%s: rbd_obj_method_sync returned %d\n", __func__, ret);
if (ret < 0)
goto out;
......@@ -2735,12 +3136,11 @@ static char *rbd_dev_v2_snap_name(struct rbd_device *rbd_dev, u32 which)
return ERR_PTR(-ENOMEM);
snap_id = cpu_to_le64(rbd_dev->header.snapc->snaps[which]);
ret = rbd_req_sync_exec(rbd_dev, rbd_dev->header_name,
ret = rbd_obj_method_sync(rbd_dev, rbd_dev->header_name,
"rbd", "get_snapshot_name",
(char *) &snap_id, sizeof (snap_id),
reply_buf, size,
CEPH_OSD_FLAG_READ, NULL);
dout("%s: rbd_req_sync_exec returned %d\n", __func__, ret);
reply_buf, size, NULL);
dout("%s: rbd_obj_method_sync returned %d\n", __func__, ret);
if (ret < 0)
goto out;
......@@ -2766,7 +3166,7 @@ static char *rbd_dev_v2_snap_name(struct rbd_device *rbd_dev, u32 which)
static char *rbd_dev_v2_snap_info(struct rbd_device *rbd_dev, u32 which,
u64 *snap_size, u64 *snap_features)
{
__le64 snap_id;
u64 snap_id;
u8 order;
int ret;
......@@ -2865,10 +3265,17 @@ static int rbd_dev_snaps_update(struct rbd_device *rbd_dev)
if (snap_id == CEPH_NOSNAP || (snap && snap->id > snap_id)) {
struct list_head *next = links->next;
/* Existing snapshot not in the new snap context */
/*
* A previously-existing snapshot is not in
* the new snap context.
*
* If the now missing snapshot is the one the
* image is mapped to, clear its exists flag
* so we can avoid sending any more requests
* to it.
*/
if (rbd_dev->spec->snap_id == snap->id)
rbd_dev->exists = false;
clear_bit(RBD_DEV_FLAG_EXISTS, &rbd_dev->flags);
rbd_remove_snap_dev(snap);
dout("%ssnap id %llu has been removed\n",
rbd_dev->spec->snap_id == snap->id ?
......@@ -2983,22 +3390,6 @@ static void rbd_bus_del_dev(struct rbd_device *rbd_dev)
device_unregister(&rbd_dev->dev);
}
static int rbd_init_watch_dev(struct rbd_device *rbd_dev)
{
int ret, rc;
do {
ret = rbd_req_sync_watch(rbd_dev);
if (ret == -ERANGE) {
rc = rbd_dev_refresh(rbd_dev, NULL);
if (rc < 0)
return rc;
}
} while (ret == -ERANGE);
return ret;
}
static atomic64_t rbd_dev_id_max = ATOMIC64_INIT(0);
/*
......@@ -3138,11 +3529,9 @@ static inline char *dup_token(const char **buf, size_t *lenp)
size_t len;
len = next_token(buf);
dup = kmalloc(len + 1, GFP_KERNEL);
dup = kmemdup(*buf, len + 1, GFP_KERNEL);
if (!dup)
return NULL;
memcpy(dup, *buf, len);
*(dup + len) = '\0';
*buf += len;
......@@ -3210,8 +3599,10 @@ static int rbd_add_parse_args(const char *buf,
/* The first four tokens are required */
len = next_token(&buf);
if (!len)
return -EINVAL; /* Missing monitor address(es) */
if (!len) {
rbd_warn(NULL, "no monitor address(es) provided");
return -EINVAL;
}
mon_addrs = buf;
mon_addrs_size = len + 1;
buf += len;
......@@ -3220,8 +3611,10 @@ static int rbd_add_parse_args(const char *buf,
options = dup_token(&buf, NULL);
if (!options)
return -ENOMEM;
if (!*options)
goto out_err; /* Missing options */
if (!*options) {
rbd_warn(NULL, "no options provided");
goto out_err;
}
spec = rbd_spec_alloc();
if (!spec)
......@@ -3230,14 +3623,18 @@ static int rbd_add_parse_args(const char *buf,
spec->pool_name = dup_token(&buf, NULL);
if (!spec->pool_name)
goto out_mem;
if (!*spec->pool_name)
goto out_err; /* Missing pool name */
if (!*spec->pool_name) {
rbd_warn(NULL, "no pool name provided");
goto out_err;
}
spec->image_name = dup_token(&buf, &spec->image_name_len);
spec->image_name = dup_token(&buf, NULL);
if (!spec->image_name)
goto out_mem;
if (!*spec->image_name)
goto out_err; /* Missing image name */
if (!*spec->image_name) {
rbd_warn(NULL, "no image name provided");
goto out_err;
}
/*
* Snapshot name is optional; default is to use "-"
......@@ -3251,10 +3648,9 @@ static int rbd_add_parse_args(const char *buf,
ret = -ENAMETOOLONG;
goto out_err;
}
spec->snap_name = kmalloc(len + 1, GFP_KERNEL);
spec->snap_name = kmemdup(buf, len + 1, GFP_KERNEL);
if (!spec->snap_name)
goto out_mem;
memcpy(spec->snap_name, buf, len);
*(spec->snap_name + len) = '\0';
/* Initialize all rbd options to the defaults */
......@@ -3323,7 +3719,7 @@ static int rbd_dev_image_id(struct rbd_device *rbd_dev)
* First, see if the format 2 image id file exists, and if
* so, get the image's persistent id from it.
*/
size = sizeof (RBD_ID_PREFIX) + rbd_dev->spec->image_name_len;
size = sizeof (RBD_ID_PREFIX) + strlen(rbd_dev->spec->image_name);
object_name = kmalloc(size, GFP_NOIO);
if (!object_name)
return -ENOMEM;
......@@ -3339,21 +3735,18 @@ static int rbd_dev_image_id(struct rbd_device *rbd_dev)
goto out;
}
ret = rbd_req_sync_exec(rbd_dev, object_name,
ret = rbd_obj_method_sync(rbd_dev, object_name,
"rbd", "get_id",
NULL, 0,
response, RBD_IMAGE_ID_LEN_MAX,
CEPH_OSD_FLAG_READ, NULL);
dout("%s: rbd_req_sync_exec returned %d\n", __func__, ret);
response, RBD_IMAGE_ID_LEN_MAX, NULL);
dout("%s: rbd_obj_method_sync returned %d\n", __func__, ret);
if (ret < 0)
goto out;
ret = 0; /* rbd_req_sync_exec() can return positive */
p = response;
rbd_dev->spec->image_id = ceph_extract_encoded_string(&p,
p + RBD_IMAGE_ID_LEN_MAX,
&rbd_dev->spec->image_id_len,
GFP_NOIO);
NULL, GFP_NOIO);
if (IS_ERR(rbd_dev->spec->image_id)) {
ret = PTR_ERR(rbd_dev->spec->image_id);
rbd_dev->spec->image_id = NULL;
......@@ -3377,11 +3770,10 @@ static int rbd_dev_v1_probe(struct rbd_device *rbd_dev)
rbd_dev->spec->image_id = kstrdup("", GFP_KERNEL);
if (!rbd_dev->spec->image_id)
return -ENOMEM;
rbd_dev->spec->image_id_len = 0;
/* Record the header object name for this rbd image. */
size = rbd_dev->spec->image_name_len + sizeof (RBD_SUFFIX);
size = strlen(rbd_dev->spec->image_name) + sizeof (RBD_SUFFIX);
rbd_dev->header_name = kmalloc(size, GFP_KERNEL);
if (!rbd_dev->header_name) {
ret = -ENOMEM;
......@@ -3427,7 +3819,7 @@ static int rbd_dev_v2_probe(struct rbd_device *rbd_dev)
* Image id was filled in by the caller. Record the header
* object name for this rbd image.
*/
size = sizeof (RBD_HEADER_PREFIX) + rbd_dev->spec->image_id_len;
size = sizeof (RBD_HEADER_PREFIX) + strlen(rbd_dev->spec->image_id);
rbd_dev->header_name = kmalloc(size, GFP_KERNEL);
if (!rbd_dev->header_name)
return -ENOMEM;
......@@ -3542,7 +3934,7 @@ static int rbd_dev_probe_finish(struct rbd_device *rbd_dev)
if (ret)
goto err_out_bus;
ret = rbd_init_watch_dev(rbd_dev);
ret = rbd_dev_header_watch_sync(rbd_dev, 1);
if (ret)
goto err_out_bus;
......@@ -3638,6 +4030,13 @@ static ssize_t rbd_add(struct bus_type *bus,
goto err_out_client;
spec->pool_id = (u64) rc;
/* The ceph file layout needs to fit pool id in 32 bits */
if (WARN_ON(spec->pool_id > (u64) U32_MAX)) {
rc = -EIO;
goto err_out_client;
}
rbd_dev = rbd_dev_create(rbdc, spec);
if (!rbd_dev)
goto err_out_client;
......@@ -3691,15 +4090,8 @@ static void rbd_dev_release(struct device *dev)
{
struct rbd_device *rbd_dev = dev_to_rbd_dev(dev);
if (rbd_dev->watch_request) {
struct ceph_client *client = rbd_dev->rbd_client->client;
ceph_osdc_unregister_linger_request(&client->osdc,
rbd_dev->watch_request);
}
if (rbd_dev->watch_event)
rbd_req_sync_unwatch(rbd_dev);
rbd_dev_header_watch_sync(rbd_dev, 0);
/* clean up and free blkdev */
rbd_free_disk(rbd_dev);
......@@ -3743,10 +4135,14 @@ static ssize_t rbd_remove(struct bus_type *bus,
goto done;
}
if (rbd_dev->open_count) {
spin_lock_irq(&rbd_dev->lock);
if (rbd_dev->open_count)
ret = -EBUSY;
else
set_bit(RBD_DEV_FLAG_REMOVING, &rbd_dev->flags);
spin_unlock_irq(&rbd_dev->lock);
if (ret < 0)
goto done;
}
rbd_remove_all_snaps(rbd_dev);
rbd_bus_del_dev(rbd_dev);
......@@ -3786,6 +4182,11 @@ int __init rbd_init(void)
{
int rc;
if (!libceph_compatible(NULL)) {
rbd_warn(NULL, "libceph incompatibility (quitting)");
return -EINVAL;
}
rc = rbd_sysfs_init();
if (rc)
return rc;
......
fs/ceph/addr.c
View file @ 4c7a08c8
......@@ -315,7 +315,7 @@ static int start_read(struct inode *inode, struct list_head *page_list, int max)
CEPH_OSD_OP_READ, CEPH_OSD_FLAG_READ,
NULL, 0,
ci->i_truncate_seq, ci->i_truncate_size,
NULL, false, 1, 0);
NULL, false, 0);
if (IS_ERR(req))
return PTR_ERR(req);
......@@ -492,8 +492,7 @@ static int writepage_nounlock(struct page *page, struct writeback_control *wbc)
&ci->i_layout, snapc,
page_off, len,
ci->i_truncate_seq, ci->i_truncate_size,
&inode->i_mtime,
&page, 1, 0, 0, true);
&inode->i_mtime, &page, 1);
if (err < 0) {
dout("writepage setting page/mapping error %d %p\n", err, page);
SetPageError(page);
......@@ -838,7 +837,7 @@ static int ceph_writepages_start(struct address_space *mapping,
snapc, do_sync,
ci->i_truncate_seq,
ci->i_truncate_size,
&inode->i_mtime, true, 1, 0);
&inode->i_mtime, true, 0);
if (IS_ERR(req)) {
rc = PTR_ERR(req);
......
fs/ceph/caps.c
View file @ 4c7a08c8
......@@ -611,8 +611,16 @@ int ceph_add_cap(struct inode *inode,
if (flags & CEPH_CAP_FLAG_AUTH)
ci->i_auth_cap = cap;
else if (ci->i_auth_cap == cap)
else if (ci->i_auth_cap == cap) {
ci->i_auth_cap = NULL;
spin_lock(&mdsc->cap_dirty_lock);
if (!list_empty(&ci->i_dirty_item)) {
dout(" moving %p to cap_dirty_migrating\n", inode);
list_move(&ci->i_dirty_item,
&mdsc->cap_dirty_migrating);
}
spin_unlock(&mdsc->cap_dirty_lock);
}
dout("add_cap inode %p (%llx.%llx) cap %p %s now %s seq %d mds%d\n",
inode, ceph_vinop(inode), cap, ceph_cap_string(issued),
......@@ -1460,7 +1468,7 @@ void ceph_check_caps(struct ceph_inode_info *ci, int flags,
struct ceph_mds_client *mdsc = fsc->mdsc;
struct inode *inode = &ci->vfs_inode;
struct ceph_cap *cap;
int file_wanted, used;
int file_wanted, used, cap_used;
int took_snap_rwsem = 0; /* true if mdsc->snap_rwsem held */
int issued, implemented, want, retain, revoking, flushing = 0;
int mds = -1; /* keep track of how far we've gone through i_caps list
......@@ -1563,9 +1571,14 @@ void ceph_check_caps(struct ceph_inode_info *ci, int flags,
/* NOTE: no side-effects allowed, until we take s_mutex */
cap_used = used;
if (ci->i_auth_cap && cap != ci->i_auth_cap)
cap_used &= ~ci->i_auth_cap->issued;
revoking = cap->implemented & ~cap->issued;
dout(" mds%d cap %p issued %s implemented %s revoking %s\n",
dout(" mds%d cap %p used %s issued %s implemented %s revoking %s\n",
cap->mds, cap, ceph_cap_string(cap->issued),
ceph_cap_string(cap_used),
ceph_cap_string(cap->implemented),
ceph_cap_string(revoking));
......@@ -1593,7 +1606,7 @@ void ceph_check_caps(struct ceph_inode_info *ci, int flags,
}
/* completed revocation? going down and there are no caps? */
if (revoking && (revoking & used) == 0) {
if (revoking && (revoking & cap_used) == 0) {
dout("completed revocation of %s\n",
ceph_cap_string(cap->implemented & ~cap->issued));
goto ack;
......@@ -1670,8 +1683,8 @@ void ceph_check_caps(struct ceph_inode_info *ci, int flags,
sent++;
/* __send_cap drops i_ceph_lock */
delayed += __send_cap(mdsc, cap, CEPH_CAP_OP_UPDATE, used, want,
retain, flushing, NULL);
delayed += __send_cap(mdsc, cap, CEPH_CAP_OP_UPDATE, cap_used,
want, retain, flushing, NULL);
goto retry; /* retake i_ceph_lock and restart our cap scan. */
}
......@@ -2416,7 +2429,9 @@ static void handle_cap_grant(struct inode *inode, struct ceph_mds_caps *grant,
dout("mds wanted %s -> %s\n",
ceph_cap_string(le32_to_cpu(grant->wanted)),
ceph_cap_string(wanted));
grant->wanted = cpu_to_le32(wanted);
/* imported cap may not have correct mds_wanted */
if (le32_to_cpu(grant->op) == CEPH_CAP_OP_IMPORT)
check_caps = 1;
}
cap->seq = seq;
......@@ -2820,6 +2835,9 @@ void ceph_handle_caps(struct ceph_mds_session *session,
dout(" mds%d seq %lld cap seq %u\n", session->s_mds, session->s_seq,
(unsigned)seq);
if (op == CEPH_CAP_OP_IMPORT)
ceph_add_cap_releases(mdsc, session);
/* lookup ino */
inode = ceph_find_inode(sb, vino);
ci = ceph_inode(inode);
......
fs/ceph/file.c
View file @ 4c7a08c8
......@@ -243,6 +243,9 @@ int ceph_atomic_open(struct inode *dir, struct dentry *dentry,
err = ceph_mdsc_do_request(mdsc,
(flags & (O_CREAT|O_TRUNC)) ? dir : NULL,
req);
if (err)
goto out_err;
err = ceph_handle_snapdir(req, dentry, err);
if (err == 0 && (flags & O_CREAT) && !req->r_reply_info.head->is_dentry)
err = ceph_handle_notrace_create(dir, dentry);
......@@ -263,6 +266,9 @@ int ceph_atomic_open(struct inode *dir, struct dentry *dentry,
err = finish_no_open(file, dn);
} else {
dout("atomic_open finish_open on dn %p\n", dn);
if (req->r_op == CEPH_MDS_OP_CREATE && req->r_reply_info.has_create_ino) {
*opened |= FILE_CREATED;
}
err = finish_open(file, dentry, ceph_open, opened);
}
......@@ -535,7 +541,7 @@ static ssize_t ceph_sync_write(struct file *file, const char __user *data,
ci->i_snap_realm->cached_context,
do_sync,
ci->i_truncate_seq, ci->i_truncate_size,
&mtime, false, 2, page_align);
&mtime, false, page_align);
if (IS_ERR(req))
return PTR_ERR(req);
......
fs/ceph/ioctl.c
View file @ 4c7a08c8
......@@ -194,7 +194,7 @@ static long ceph_ioctl_get_dataloc(struct file *file, void __user *arg)
return -EFAULT;
down_read(&osdc->map_sem);
r = ceph_calc_file_object_mapping(&ci->i_layout, dl.file_offset, &len,
r = ceph_calc_file_object_mapping(&ci->i_layout, dl.file_offset, len,
&dl.object_no, &dl.object_offset,
&olen);
if (r < 0)
......
fs/ceph/mds_client.c
View file @ 4c7a08c8
......@@ -232,6 +232,30 @@ static int parse_reply_info_filelock(void **p, void *end,
return -EIO;
}
/*
* parse create results
*/
static int parse_reply_info_create(void **p, void *end,
struct ceph_mds_reply_info_parsed *info,
int features)
{
if (features & CEPH_FEATURE_REPLY_CREATE_INODE) {
if (*p == end) {
info->has_create_ino = false;
} else {
info->has_create_ino = true;
info->ino = ceph_decode_64(p);
}
}
if (unlikely(*p != end))
goto bad;
return 0;
bad:
return -EIO;
}
/*
* parse extra results
*/
......@@ -241,8 +265,12 @@ static int parse_reply_info_extra(void **p, void *end,
{
if (info->head->op == CEPH_MDS_OP_GETFILELOCK)
return parse_reply_info_filelock(p, end, info, features);
else
else if (info->head->op == CEPH_MDS_OP_READDIR)
return parse_reply_info_dir(p, end, info, features);
else if (info->head->op == CEPH_MDS_OP_CREATE)
return parse_reply_info_create(p, end, info, features);
else
return -EIO;
}
/*
......@@ -2170,7 +2198,8 @@ static void handle_reply(struct ceph_mds_session *session, struct ceph_msg *msg)
mutex_lock(&req->r_fill_mutex);
err = ceph_fill_trace(mdsc->fsc->sb, req, req->r_session);
if (err == 0) {
if (result == 0 && req->r_op != CEPH_MDS_OP_GETFILELOCK &&
if (result == 0 && (req->r_op == CEPH_MDS_OP_READDIR ||
req->r_op == CEPH_MDS_OP_LSSNAP) &&
rinfo->dir_nr)
ceph_readdir_prepopulate(req, req->r_session);
ceph_unreserve_caps(mdsc, &req->r_caps_reservation);
......
fs/ceph/mds_client.h
View file @ 4c7a08c8
......@@ -74,6 +74,12 @@ struct ceph_mds_reply_info_parsed {
struct ceph_mds_reply_info_in *dir_in;
u8 dir_complete, dir_end;
};
/* for create results */
struct {
bool has_create_ino;
u64 ino;
};
};
/* encoded blob describing snapshot contexts for certain
......
fs/ceph/strings.c
View file @ 4c7a08c8
......@@ -15,6 +15,7 @@ const char *ceph_mds_state_name(int s)
case CEPH_MDS_STATE_BOOT: return "up:boot";
case CEPH_MDS_STATE_STANDBY: return "up:standby";
case CEPH_MDS_STATE_STANDBY_REPLAY: return "up:standby-replay";
case CEPH_MDS_STATE_REPLAYONCE: return "up:oneshot-replay";
case CEPH_MDS_STATE_CREATING: return "up:creating";
case CEPH_MDS_STATE_STARTING: return "up:starting";
/* up and in */
......@@ -50,10 +51,13 @@ const char *ceph_mds_op_name(int op)
case CEPH_MDS_OP_LOOKUP: return "lookup";
case CEPH_MDS_OP_LOOKUPHASH: return "lookuphash";
case CEPH_MDS_OP_LOOKUPPARENT: return "lookupparent";
case CEPH_MDS_OP_LOOKUPINO: return "lookupino";
case CEPH_MDS_OP_GETATTR: return "getattr";
case CEPH_MDS_OP_SETXATTR: return "setxattr";
case CEPH_MDS_OP_SETATTR: return "setattr";
case CEPH_MDS_OP_RMXATTR: return "rmxattr";
case CEPH_MDS_OP_SETLAYOUT: return "setlayou";
case CEPH_MDS_OP_SETDIRLAYOUT: return "setdirlayout";
case CEPH_MDS_OP_READDIR: return "readdir";
case CEPH_MDS_OP_MKNOD: return "mknod";
case CEPH_MDS_OP_LINK: return "link";
......
fs/ceph/super.h
View file @ 4c7a08c8
......@@ -798,13 +798,7 @@ extern int ceph_mmap(struct file *file, struct vm_area_struct *vma);
/* file.c */
extern const struct file_operations ceph_file_fops;
extern const struct address_space_operations ceph_aops;
extern int ceph_copy_to_page_vector(struct page **pages,
const char *data,
loff_t off, size_t len);
extern int ceph_copy_from_page_vector(struct page **pages,
char *data,
loff_t off, size_t len);
extern struct page **ceph_alloc_page_vector(int num_pages, gfp_t flags);
extern int ceph_open(struct inode *inode, struct file *file);
extern int ceph_atomic_open(struct inode *dir, struct dentry *dentry,
struct file *file, unsigned flags, umode_t mode,
......
fs/ceph/xattr.c
View file @ 4c7a08c8
......@@ -29,9 +29,94 @@ struct ceph_vxattr {
size_t name_size; /* strlen(name) + 1 (for '\0') */
size_t (*getxattr_cb)(struct ceph_inode_info *ci, char *val,
size_t size);
bool readonly;
bool readonly, hidden;
bool (*exists_cb)(struct ceph_inode_info *ci);
};
/* layouts */
static bool ceph_vxattrcb_layout_exists(struct ceph_inode_info *ci)
{
size_t s;
char *p = (char *)&ci->i_layout;
for (s = 0; s < sizeof(ci->i_layout); s++, p++)
if (*p)
return true;
return false;
}
static size_t ceph_vxattrcb_layout(struct ceph_inode_info *ci, char *val,
size_t size)
{
int ret;
struct ceph_fs_client *fsc = ceph_sb_to_client(ci->vfs_inode.i_sb);
struct ceph_osd_client *osdc = &fsc->client->osdc;
s64 pool = ceph_file_layout_pg_pool(ci->i_layout);
const char *pool_name;
dout("ceph_vxattrcb_layout %p\n", &ci->vfs_inode);
down_read(&osdc->map_sem);
pool_name = ceph_pg_pool_name_by_id(osdc->osdmap, pool);
if (pool_name)
ret = snprintf(val, size,
"stripe_unit=%lld stripe_count=%lld object_size=%lld pool=%s",
(unsigned long long)ceph_file_layout_su(ci->i_layout),
(unsigned long long)ceph_file_layout_stripe_count(ci->i_layout),
(unsigned long long)ceph_file_layout_object_size(ci->i_layout),
pool_name);
else
ret = snprintf(val, size,
"stripe_unit=%lld stripe_count=%lld object_size=%lld pool=%lld",
(unsigned long long)ceph_file_layout_su(ci->i_layout),
(unsigned long long)ceph_file_layout_stripe_count(ci->i_layout),
(unsigned long long)ceph_file_layout_object_size(ci->i_layout),
(unsigned long long)pool);
up_read(&osdc->map_sem);
return ret;
}
static size_t ceph_vxattrcb_layout_stripe_unit(struct ceph_inode_info *ci,
char *val, size_t size)
{
return snprintf(val, size, "%lld",
(unsigned long long)ceph_file_layout_su(ci->i_layout));
}
static size_t ceph_vxattrcb_layout_stripe_count(struct ceph_inode_info *ci,
char *val, size_t size)
{
return snprintf(val, size, "%lld",
(unsigned long long)ceph_file_layout_stripe_count(ci->i_layout));
}
static size_t ceph_vxattrcb_layout_object_size(struct ceph_inode_info *ci,
char *val, size_t size)
{
return snprintf(val, size, "%lld",
(unsigned long long)ceph_file_layout_object_size(ci->i_layout));
}
static size_t ceph_vxattrcb_layout_pool(struct ceph_inode_info *ci,
char *val, size_t size)
{
int ret;
struct ceph_fs_client *fsc = ceph_sb_to_client(ci->vfs_inode.i_sb);
struct ceph_osd_client *osdc = &fsc->client->osdc;
s64 pool = ceph_file_layout_pg_pool(ci->i_layout);
const char *pool_name;
down_read(&osdc->map_sem);
pool_name = ceph_pg_pool_name_by_id(osdc->osdmap, pool);
if (pool_name)
ret = snprintf(val, size, "%s", pool_name);
else
ret = snprintf(val, size, "%lld", (unsigned long long)pool);
up_read(&osdc->map_sem);
return ret;
}
/* directories */
static size_t ceph_vxattrcb_dir_entries(struct ceph_inode_info *ci, char *val,
......@@ -83,7 +168,10 @@ static size_t ceph_vxattrcb_dir_rctime(struct ceph_inode_info *ci, char *val,
(long)ci->i_rctime.tv_nsec);
}
#define CEPH_XATTR_NAME(_type, _name) XATTR_CEPH_PREFIX #_type "." #_name
#define CEPH_XATTR_NAME2(_type, _name, _name2) \
XATTR_CEPH_PREFIX #_type "." #_name "." #_name2
#define XATTR_NAME_CEPH(_type, _name) \
{ \
......@@ -91,9 +179,32 @@ static size_t ceph_vxattrcb_dir_rctime(struct ceph_inode_info *ci, char *val,
.name_size = sizeof (CEPH_XATTR_NAME(_type, _name)), \
.getxattr_cb = ceph_vxattrcb_ ## _type ## _ ## _name, \
.readonly = true, \
.hidden = false, \
.exists_cb = NULL, \
}
#define XATTR_LAYOUT_FIELD(_type, _name, _field) \
{ \
.name = CEPH_XATTR_NAME2(_type, _name, _field), \
.name_size = sizeof (CEPH_XATTR_NAME2(_type, _name, _field)), \
.getxattr_cb = ceph_vxattrcb_ ## _name ## _ ## _field, \
.readonly = false, \
.hidden = true, \
.exists_cb = ceph_vxattrcb_layout_exists, \
}
static struct ceph_vxattr ceph_dir_vxattrs[] = {
{
.name = "ceph.dir.layout",
.name_size = sizeof("ceph.dir.layout"),
.getxattr_cb = ceph_vxattrcb_layout,
.readonly = false,
.hidden = false,
.exists_cb = ceph_vxattrcb_layout_exists,
},
XATTR_LAYOUT_FIELD(dir, layout, stripe_unit),
XATTR_LAYOUT_FIELD(dir, layout, stripe_count),
XATTR_LAYOUT_FIELD(dir, layout, object_size),
XATTR_LAYOUT_FIELD(dir, layout, pool),
XATTR_NAME_CEPH(dir, entries),
XATTR_NAME_CEPH(dir, files),
XATTR_NAME_CEPH(dir, subdirs),
......@@ -108,28 +219,19 @@ static size_t ceph_dir_vxattrs_name_size; /* total size of all names */
/* files */
static size_t ceph_vxattrcb_file_layout(struct ceph_inode_info *ci, char *val,
size_t size)
{
int ret;
ret = snprintf(val, size,
"chunk_bytes=%lld\nstripe_count=%lld\nobject_size=%lld\n",
(unsigned long long)ceph_file_layout_su(ci->i_layout),
(unsigned long long)ceph_file_layout_stripe_count(ci->i_layout),
(unsigned long long)ceph_file_layout_object_size(ci->i_layout));
return ret;
}
static struct ceph_vxattr ceph_file_vxattrs[] = {
XATTR_NAME_CEPH(file, layout),
/* The following extended attribute name is deprecated */
{
.name = XATTR_CEPH_PREFIX "layout",
.name_size = sizeof (XATTR_CEPH_PREFIX "layout"),
.getxattr_cb = ceph_vxattrcb_file_layout,
.readonly = true,
.name = "ceph.file.layout",
.name_size = sizeof("ceph.file.layout"),
.getxattr_cb = ceph_vxattrcb_layout,
.readonly = false,
.hidden = false,
.exists_cb = ceph_vxattrcb_layout_exists,
},
XATTR_LAYOUT_FIELD(file, layout, stripe_unit),
XATTR_LAYOUT_FIELD(file, layout, stripe_count),
XATTR_LAYOUT_FIELD(file, layout, object_size),
XATTR_LAYOUT_FIELD(file, layout, pool),
{ 0 } /* Required table terminator */
};
static size_t ceph_file_vxattrs_name_size; /* total size of all names */
......@@ -164,6 +266,7 @@ static size_t __init vxattrs_name_size(struct ceph_vxattr *vxattrs)
size_t size = 0;
for (vxattr = vxattrs; vxattr->name; vxattr++)
if (!vxattr->hidden)
size += vxattr->name_size;
return size;
......@@ -572,13 +675,17 @@ ssize_t ceph_getxattr(struct dentry *dentry, const char *name, void *value,
if (!ceph_is_valid_xattr(name))
return -ENODATA;
/* let's see if a virtual xattr was requested */
vxattr = ceph_match_vxattr(inode, name);
spin_lock(&ci->i_ceph_lock);
dout("getxattr %p ver=%lld index_ver=%lld\n", inode,
ci->i_xattrs.version, ci->i_xattrs.index_version);
/* let's see if a virtual xattr was requested */
vxattr = ceph_match_vxattr(inode, name);
if (vxattr && !(vxattr->exists_cb && !vxattr->exists_cb(ci))) {
err = vxattr->getxattr_cb(ci, value, size);
goto out;
}
if (__ceph_caps_issued_mask(ci, CEPH_CAP_XATTR_SHARED, 1) &&
(ci->i_xattrs.index_version >= ci->i_xattrs.version)) {
goto get_xattr;
......@@ -592,11 +699,6 @@ ssize_t ceph_getxattr(struct dentry *dentry, const char *name, void *value,
spin_lock(&ci->i_ceph_lock);
if (vxattr && vxattr->readonly) {
err = vxattr->getxattr_cb(ci, value, size);
goto out;
}
err = __build_xattrs(inode);
if (err < 0)
goto out;
......@@ -604,11 +706,8 @@ ssize_t ceph_getxattr(struct dentry *dentry, const char *name, void *value,
get_xattr:
err = -ENODATA; /* == ENOATTR */
xattr = __get_xattr(ci, name);
if (!xattr) {
if (vxattr)
err = vxattr->getxattr_cb(ci, value, size);
if (!xattr)
goto out;
}
err = -ERANGE;
if (size && size < xattr->val_len)
......@@ -664,22 +763,29 @@ ssize_t ceph_listxattr(struct dentry *dentry, char *names, size_t size)
vir_namelen = ceph_vxattrs_name_size(vxattrs);
/* adding 1 byte per each variable due to the null termination */
namelen = vir_namelen + ci->i_xattrs.names_size + ci->i_xattrs.count;
namelen = ci->i_xattrs.names_size + ci->i_xattrs.count;
err = -ERANGE;
if (size && namelen > size)
if (size && vir_namelen + namelen > size)
goto out;
err = namelen;
err = namelen + vir_namelen;
if (size == 0)
goto out;
names = __copy_xattr_names(ci, names);
/* virtual xattr names, too */
if (vxattrs)
err = namelen;
if (vxattrs) {
for (i = 0; vxattrs[i].name; i++) {
if (!vxattrs[i].hidden &&
!(vxattrs[i].exists_cb &&
!vxattrs[i].exists_cb(ci))) {
len = sprintf(names, "%s", vxattrs[i].name);
names += len + 1;
err += len + 1;
}
}
}
out:
......@@ -782,6 +888,10 @@ int ceph_setxattr(struct dentry *dentry, const char *name,
if (vxattr && vxattr->readonly)
return -EOPNOTSUPP;
/* pass any unhandled ceph.* xattrs through to the MDS */
if (!strncmp(name, XATTR_CEPH_PREFIX, XATTR_CEPH_PREFIX_LEN))
goto do_sync_unlocked;
/* preallocate memory for xattr name, value, index node */
err = -ENOMEM;
newname = kmemdup(name, name_len + 1, GFP_NOFS);
......@@ -838,6 +948,7 @@ int ceph_setxattr(struct dentry *dentry, const char *name,
do_sync:
spin_unlock(&ci->i_ceph_lock);
do_sync_unlocked:
err = ceph_sync_setxattr(dentry, name, value, size, flags);
out:
kfree(newname);
......@@ -892,6 +1003,10 @@ int ceph_removexattr(struct dentry *dentry, const char *name)
if (vxattr && vxattr->readonly)
return -EOPNOTSUPP;
/* pass any unhandled ceph.* xattrs through to the MDS */
if (!strncmp(name, XATTR_CEPH_PREFIX, XATTR_CEPH_PREFIX_LEN))
goto do_sync_unlocked;
err = -ENOMEM;
spin_lock(&ci->i_ceph_lock);
retry:
......@@ -931,6 +1046,7 @@ int ceph_removexattr(struct dentry *dentry, const char *name)
return err;
do_sync:
spin_unlock(&ci->i_ceph_lock);
do_sync_unlocked:
err = ceph_send_removexattr(dentry, name);
out:
return err;
......
include/linux/ceph/ceph_features.h
View file @ 4c7a08c8
......@@ -14,13 +14,19 @@
#define CEPH_FEATURE_DIRLAYOUTHASH (1<<7)
/* bits 8-17 defined by user-space; not supported yet here */
#define CEPH_FEATURE_CRUSH_TUNABLES (1<<18)
/* bits 19-24 defined by user-space; not supported yet here */
#define CEPH_FEATURE_CRUSH_TUNABLES2 (1<<25)
/* bit 26 defined by user-space; not supported yet here */
#define CEPH_FEATURE_REPLY_CREATE_INODE (1<<27)
/*
* Features supported.
*/
#define CEPH_FEATURES_SUPPORTED_DEFAULT \
(CEPH_FEATURE_NOSRCADDR | \
CEPH_FEATURE_CRUSH_TUNABLES)
CEPH_FEATURE_CRUSH_TUNABLES | \
CEPH_FEATURE_CRUSH_TUNABLES2 | \
CEPH_FEATURE_REPLY_CREATE_INODE)
#define CEPH_FEATURES_REQUIRED_DEFAULT \
(CEPH_FEATURE_NOSRCADDR)
......
include/linux/ceph/ceph_fs.h
View file @ 4c7a08c8
......@@ -21,9 +21,6 @@
* internal cluster protocols separately from the public,
* client-facing protocol.
*/
#define CEPH_OSD_PROTOCOL 8 /* cluster internal */
#define CEPH_MDS_PROTOCOL 12 /* cluster internal */
#define CEPH_MON_PROTOCOL 5 /* cluster internal */
#define CEPH_OSDC_PROTOCOL 24 /* server/client */
#define CEPH_MDSC_PROTOCOL 32 /* server/client */
#define CEPH_MONC_PROTOCOL 15 /* server/client */
......@@ -31,6 +28,7 @@
#define CEPH_INO_ROOT 1
#define CEPH_INO_CEPH 2 /* hidden .ceph dir */
#define CEPH_INO_DOTDOT 3 /* used by ceph fuse for parent (..) */
/* arbitrary limit on max # of monitors (cluster of 3 is typical) */
#define CEPH_MAX_MON 31
......@@ -51,7 +49,7 @@ struct ceph_file_layout {
__le32 fl_object_stripe_unit; /* UNUSED. for per-object parity, if any */
/* object -> pg layout */
__le32 fl_unused; /* unused; used to be preferred primary (-1) */
__le32 fl_unused; /* unused; used to be preferred primary for pg (-1 for none) */
__le32 fl_pg_pool; /* namespace, crush ruleset, rep level */
} __attribute__ ((packed));
......@@ -101,6 +99,8 @@ struct ceph_dir_layout {
#define CEPH_MSG_MON_SUBSCRIBE_ACK 16
#define CEPH_MSG_AUTH 17
#define CEPH_MSG_AUTH_REPLY 18
#define CEPH_MSG_MON_GET_VERSION 19
#define CEPH_MSG_MON_GET_VERSION_REPLY 20
/* client <-> mds */
#define CEPH_MSG_MDS_MAP 21
......@@ -220,6 +220,11 @@ struct ceph_mon_subscribe_ack {
struct ceph_fsid fsid;
} __attribute__ ((packed));
/*
* mdsmap flags
*/
#define CEPH_MDSMAP_DOWN (1<<0) /* cluster deliberately down */
/*
* mds states
* > 0 -> in
......@@ -233,6 +238,7 @@ struct ceph_mon_subscribe_ack {
#define CEPH_MDS_STATE_CREATING -6 /* up, creating MDS instance. */
#define CEPH_MDS_STATE_STARTING -7 /* up, starting previously stopped mds */
#define CEPH_MDS_STATE_STANDBY_REPLAY -8 /* up, tailing active node's journal */
#define CEPH_MDS_STATE_REPLAYONCE -9 /* up, replaying an active node's journal */
#define CEPH_MDS_STATE_REPLAY 8 /* up, replaying journal. */
#define CEPH_MDS_STATE_RESOLVE 9 /* up, disambiguating distributed
......@@ -264,6 +270,7 @@ extern const char *ceph_mds_state_name(int s);
#define CEPH_LOCK_IXATTR 2048
#define CEPH_LOCK_IFLOCK 4096 /* advisory file locks */
#define CEPH_LOCK_INO 8192 /* immutable inode bits; not a lock */
#define CEPH_LOCK_IPOLICY 16384 /* policy lock on dirs. MDS internal */
/* client_session ops */
enum {
......@@ -338,6 +345,12 @@ extern const char *ceph_mds_op_name(int op);
#define CEPH_SETATTR_SIZE 32
#define CEPH_SETATTR_CTIME 64
/*
* Ceph setxattr request flags.
*/
#define CEPH_XATTR_CREATE 1
#define CEPH_XATTR_REPLACE 2
union ceph_mds_request_args {
struct {
__le32 mask; /* CEPH_CAP_* */
......@@ -522,6 +535,9 @@ int ceph_flags_to_mode(int flags);
#define CEPH_CAP_GWREXTEND 64 /* (file) client can extend EOF */
#define CEPH_CAP_GLAZYIO 128 /* (file) client can perform lazy io */
#define CEPH_CAP_SIMPLE_BITS 2
#define CEPH_CAP_FILE_BITS 8
/* per-lock shift */
#define CEPH_CAP_SAUTH 2
#define CEPH_CAP_SLINK 4
......
include/linux/ceph/decode.h
View file @ 4c7a08c8
......@@ -99,8 +99,8 @@ static inline int ceph_has_room(void **p, void *end, size_t n)
*
* There are two possible failures:
* - converting the string would require accessing memory at or
* beyond the "end" pointer provided (-E
* - memory could not be allocated for the result
* beyond the "end" pointer provided (-ERANGE)
* - memory could not be allocated for the result (-ENOMEM)
*/
static inline char *ceph_extract_encoded_string(void **p, void *end,
size_t *lenp, gfp_t gfp)
......@@ -238,6 +238,11 @@ static inline void ceph_encode_string(void **p, void *end,
ceph_encode_need(p, end, sizeof(u16), bad); \
ceph_encode_16(p, v); \
} while (0)
#define ceph_encode_8_safe(p, end, v, bad) \
do { \
ceph_encode_need(p, end, sizeof(u8), bad); \
ceph_encode_8(p, v); \
} while (0)
#define ceph_encode_copy_safe(p, end, pv, n, bad) \
do { \
......
include/linux/ceph/libceph.h
View file @ 4c7a08c8
......@@ -193,6 +193,8 @@ static inline int calc_pages_for(u64 off, u64 len)
}
/* ceph_common.c */
extern bool libceph_compatible(void *data);
extern const char *ceph_msg_type_name(int type);
extern int ceph_check_fsid(struct ceph_client *client, struct ceph_fsid *fsid);
extern struct kmem_cache *ceph_inode_cachep;
......@@ -220,7 +222,7 @@ extern int ceph_open_session(struct ceph_client *client);
/* pagevec.c */
extern void ceph_release_page_vector(struct page **pages, int num_pages);
extern struct page **ceph_get_direct_page_vector(const char __user *data,
extern struct page **ceph_get_direct_page_vector(const void __user *data,
int num_pages,
bool write_page);
extern void ceph_put_page_vector(struct page **pages, int num_pages,
......@@ -228,15 +230,15 @@ extern void ceph_put_page_vector(struct page **pages, int num_pages,
extern void ceph_release_page_vector(struct page **pages, int num_pages);
extern struct page **ceph_alloc_page_vector(int num_pages, gfp_t flags);
extern int ceph_copy_user_to_page_vector(struct page **pages,
const char __user *data,
const void __user *data,
loff_t off, size_t len);
extern int ceph_copy_to_page_vector(struct page **pages,
const char *data,
extern void ceph_copy_to_page_vector(struct page **pages,
const void *data,
loff_t off, size_t len);
extern int ceph_copy_from_page_vector(struct page **pages,
char *data,
extern void ceph_copy_from_page_vector(struct page **pages,
void *data,
loff_t off, size_t len);
extern int ceph_copy_page_vector_to_user(struct page **pages, char __user *data,
extern int ceph_copy_page_vector_to_user(struct page **pages, void __user *data,
loff_t off, size_t len);
extern void ceph_zero_page_vector_range(int off, int len, struct page **pages);
......
include/linux/ceph/messenger.h
View file @ 4c7a08c8
......@@ -83,9 +83,11 @@ struct ceph_msg {
struct list_head list_head;
struct kref kref;
#ifdef CONFIG_BLOCK
struct bio *bio; /* instead of pages/pagelist */
struct bio *bio_iter; /* bio iterator */
int bio_seg; /* current bio segment */
#endif /* CONFIG_BLOCK */
struct ceph_pagelist *trail; /* the trailing part of the data */
bool front_is_vmalloc;
bool more_to_follow;
......
include/linux/ceph/osd_client.h
View file @ 4c7a08c8
......@@ -10,6 +10,7 @@
#include <linux/ceph/osdmap.h>
#include <linux/ceph/messenger.h>
#include <linux/ceph/auth.h>
#include <linux/ceph/pagelist.h>
/*
* Maximum object name size
......@@ -22,7 +23,6 @@ struct ceph_snap_context;
struct ceph_osd_request;
struct ceph_osd_client;
struct ceph_authorizer;
struct ceph_pagelist;
/*
* completion callback for async writepages
......@@ -95,7 +95,7 @@ struct ceph_osd_request {
struct bio *r_bio; /* instead of pages */
#endif
struct ceph_pagelist *r_trail; /* trailing part of the data */
struct ceph_pagelist r_trail; /* trailing part of the data */
};
struct ceph_osd_event {
......@@ -107,7 +107,6 @@ struct ceph_osd_event {
struct rb_node node;
struct list_head osd_node;
struct kref kref;
struct completion completion;
};
struct ceph_osd_event_work {
......@@ -157,7 +156,7 @@ struct ceph_osd_client {
struct ceph_osd_req_op {
u16 op; /* CEPH_OSD_OP_* */
u32 flags; /* CEPH_OSD_FLAG_* */
u32 payload_len;
union {
struct {
u64 offset, length;
......@@ -166,23 +165,24 @@ struct ceph_osd_req_op {
} extent;
struct {
const char *name;
u32 name_len;
const char *val;
u32 name_len;
u32 value_len;
__u8 cmp_op; /* CEPH_OSD_CMPXATTR_OP_* */
__u8 cmp_mode; /* CEPH_OSD_CMPXATTR_MODE_* */
} xattr;
struct {
const char *class_name;
__u8 class_len;
const char *method_name;
__u8 method_len;
__u8 argc;
const char *indata;
u32 indata_len;
__u8 class_len;
__u8 method_len;
__u8 argc;
} cls;
struct {
u64 cookie, count;
u64 cookie;
u64 count;
} pgls;
struct {
u64 snapid;
......@@ -190,12 +190,11 @@ struct ceph_osd_req_op {
struct {
u64 cookie;
u64 ver;
__u8 flag;
u32 prot_ver;
u32 timeout;
__u8 flag;
} watch;
};
u32 payload_len;
};
extern int ceph_osdc_init(struct ceph_osd_client *osdc,
......@@ -207,29 +206,19 @@ extern void ceph_osdc_handle_reply(struct ceph_osd_client *osdc,
extern void ceph_osdc_handle_map(struct ceph_osd_client *osdc,
struct ceph_msg *msg);
extern int ceph_calc_raw_layout(struct ceph_osd_client *osdc,
struct ceph_file_layout *layout,
u64 snapid,
u64 off, u64 *plen, u64 *bno,
struct ceph_osd_request *req,
struct ceph_osd_req_op *op);
extern struct ceph_osd_request *ceph_osdc_alloc_request(struct ceph_osd_client *osdc,
int flags,
struct ceph_snap_context *snapc,
struct ceph_osd_req_op *ops,
unsigned int num_op,
bool use_mempool,
gfp_t gfp_flags,
struct page **pages,
struct bio *bio);
gfp_t gfp_flags);
extern void ceph_osdc_build_request(struct ceph_osd_request *req,
u64 off, u64 *plen,
u64 off, u64 len,
unsigned int num_op,
struct ceph_osd_req_op *src_ops,
struct ceph_snap_context *snapc,
struct timespec *mtime,
const char *oid,
int oid_len);
u64 snap_id,
struct timespec *mtime);
extern struct ceph_osd_request *ceph_osdc_new_request(struct ceph_osd_client *,
struct ceph_file_layout *layout,
......@@ -239,8 +228,7 @@ extern struct ceph_osd_request *ceph_osdc_new_request(struct ceph_osd_client *,
int do_sync, u32 truncate_seq,
u64 truncate_size,
struct timespec *mtime,
bool use_mempool, int num_reply,
int page_align);
bool use_mempool, int page_align);
extern void ceph_osdc_set_request_linger(struct ceph_osd_client *osdc,
struct ceph_osd_request *req);
......@@ -279,17 +267,13 @@ extern int ceph_osdc_writepages(struct ceph_osd_client *osdc,
u64 off, u64 len,
u32 truncate_seq, u64 truncate_size,
struct timespec *mtime,
struct page **pages, int nr_pages,
int flags, int do_sync, bool nofail);
struct page **pages, int nr_pages);
/* watch/notify events */
extern int ceph_osdc_create_event(struct ceph_osd_client *osdc,
void (*event_cb)(u64, u64, u8, void *),
int one_shot, void *data,
struct ceph_osd_event **pevent);
void *data, struct ceph_osd_event **pevent);
extern void ceph_osdc_cancel_event(struct ceph_osd_event *event);
extern int ceph_osdc_wait_event(struct ceph_osd_event *event,
unsigned long timeout);
extern void ceph_osdc_put_event(struct ceph_osd_event *event);
#endif
include/linux/ceph/osdmap.h
View file @ 4c7a08c8
......@@ -110,7 +110,7 @@ extern void ceph_osdmap_destroy(struct ceph_osdmap *map);
/* calculate mapping of a file extent to an object */
extern int ceph_calc_file_object_mapping(struct ceph_file_layout *layout,
u64 off, u64 *plen,
u64 off, u64 len,
u64 *bno, u64 *oxoff, u64 *oxlen);
/* calculate mapping of object to a placement group */
......
include/linux/ceph/rados.h
View file @ 4c7a08c8
......@@ -145,8 +145,12 @@ struct ceph_eversion {
*/
/* status bits */
#define CEPH_OSD_EXISTS 1
#define CEPH_OSD_UP 2
#define CEPH_OSD_EXISTS (1<<0)
#define CEPH_OSD_UP (1<<1)
#define CEPH_OSD_AUTOOUT (1<<2) /* osd was automatically marked out */
#define CEPH_OSD_NEW (1<<3) /* osd is new, never marked in */
extern const char *ceph_osd_state_name(int s);
/* osd weights. fixed point value: 0x10000 == 1.0 ("in"), 0 == "out" */
#define CEPH_OSD_IN 0x10000
......@@ -161,9 +165,25 @@ struct ceph_eversion {
#define CEPH_OSDMAP_PAUSERD (1<<2) /* pause all reads */
#define CEPH_OSDMAP_PAUSEWR (1<<3) /* pause all writes */
#define CEPH_OSDMAP_PAUSEREC (1<<4) /* pause recovery */
#define CEPH_OSDMAP_NOUP (1<<5) /* block osd boot */
#define CEPH_OSDMAP_NODOWN (1<<6) /* block osd mark-down/failure */
#define CEPH_OSDMAP_NOOUT (1<<7) /* block osd auto mark-out */
#define CEPH_OSDMAP_NOIN (1<<8) /* block osd auto mark-in */
#define CEPH_OSDMAP_NOBACKFILL (1<<9) /* block osd backfill */
#define CEPH_OSDMAP_NORECOVER (1<<10) /* block osd recovery and backfill */
/*
* The error code to return when an OSD can't handle a write
* because it is too large.
*/
#define OSD_WRITETOOBIG EMSGSIZE
/*
* osd ops
*
* WARNING: do not use these op codes directly. Use the helpers
* defined below instead. In certain cases, op code behavior was
* redefined, resulting in special-cases in the helpers.
*/
#define CEPH_OSD_OP_MODE 0xf000
#define CEPH_OSD_OP_MODE_RD 0x1000
......@@ -177,6 +197,7 @@ struct ceph_eversion {
#define CEPH_OSD_OP_TYPE_ATTR 0x0300
#define CEPH_OSD_OP_TYPE_EXEC 0x0400
#define CEPH_OSD_OP_TYPE_PG 0x0500
#define CEPH_OSD_OP_TYPE_MULTI 0x0600 /* multiobject */
enum {
/** data **/
......@@ -217,6 +238,23 @@ enum {
CEPH_OSD_OP_WATCH = CEPH_OSD_OP_MODE_WR | CEPH_OSD_OP_TYPE_DATA | 15,
/* omap */
CEPH_OSD_OP_OMAPGETKEYS = CEPH_OSD_OP_MODE_RD | CEPH_OSD_OP_TYPE_DATA | 17,
CEPH_OSD_OP_OMAPGETVALS = CEPH_OSD_OP_MODE_RD | CEPH_OSD_OP_TYPE_DATA | 18,
CEPH_OSD_OP_OMAPGETHEADER = CEPH_OSD_OP_MODE_RD | CEPH_OSD_OP_TYPE_DATA | 19,
CEPH_OSD_OP_OMAPGETVALSBYKEYS =
CEPH_OSD_OP_MODE_RD | CEPH_OSD_OP_TYPE_DATA | 20,
CEPH_OSD_OP_OMAPSETVALS = CEPH_OSD_OP_MODE_WR | CEPH_OSD_OP_TYPE_DATA | 21,
CEPH_OSD_OP_OMAPSETHEADER = CEPH_OSD_OP_MODE_WR | CEPH_OSD_OP_TYPE_DATA | 22,
CEPH_OSD_OP_OMAPCLEAR = CEPH_OSD_OP_MODE_WR | CEPH_OSD_OP_TYPE_DATA | 23,
CEPH_OSD_OP_OMAPRMKEYS = CEPH_OSD_OP_MODE_WR | CEPH_OSD_OP_TYPE_DATA | 24,
CEPH_OSD_OP_OMAP_CMP = CEPH_OSD_OP_MODE_RD | CEPH_OSD_OP_TYPE_DATA | 25,
/** multi **/
CEPH_OSD_OP_CLONERANGE = CEPH_OSD_OP_MODE_WR | CEPH_OSD_OP_TYPE_MULTI | 1,
CEPH_OSD_OP_ASSERT_SRC_VERSION = CEPH_OSD_OP_MODE_RD | CEPH_OSD_OP_TYPE_MULTI | 2,
CEPH_OSD_OP_SRC_CMPXATTR = CEPH_OSD_OP_MODE_RD | CEPH_OSD_OP_TYPE_MULTI | 3,
/** attrs **/
/* read */
CEPH_OSD_OP_GETXATTR = CEPH_OSD_OP_MODE_RD | CEPH_OSD_OP_TYPE_ATTR | 1,
......@@ -238,6 +276,7 @@ enum {
CEPH_OSD_OP_SCRUB_RESERVE = CEPH_OSD_OP_MODE_SUB | 6,
CEPH_OSD_OP_SCRUB_UNRESERVE = CEPH_OSD_OP_MODE_SUB | 7,
CEPH_OSD_OP_SCRUB_STOP = CEPH_OSD_OP_MODE_SUB | 8,
CEPH_OSD_OP_SCRUB_MAP = CEPH_OSD_OP_MODE_SUB | 9,
/** lock **/
CEPH_OSD_OP_WRLOCK = CEPH_OSD_OP_MODE_WR | CEPH_OSD_OP_TYPE_LOCK | 1,
......@@ -248,10 +287,12 @@ enum {
CEPH_OSD_OP_DNLOCK = CEPH_OSD_OP_MODE_WR | CEPH_OSD_OP_TYPE_LOCK | 6,
/** exec **/
/* note: the RD bit here is wrong; see special-case below in helper */
CEPH_OSD_OP_CALL = CEPH_OSD_OP_MODE_RD | CEPH_OSD_OP_TYPE_EXEC | 1,
/** pg **/
CEPH_OSD_OP_PGLS = CEPH_OSD_OP_MODE_RD | CEPH_OSD_OP_TYPE_PG | 1,
CEPH_OSD_OP_PGLS_FILTER = CEPH_OSD_OP_MODE_RD | CEPH_OSD_OP_TYPE_PG | 2,
};
static inline int ceph_osd_op_type_lock(int op)
......@@ -274,6 +315,10 @@ static inline int ceph_osd_op_type_pg(int op)
{
return (op & CEPH_OSD_OP_TYPE) == CEPH_OSD_OP_TYPE_PG;
}
static inline int ceph_osd_op_type_multi(int op)
{
return (op & CEPH_OSD_OP_TYPE) == CEPH_OSD_OP_TYPE_MULTI;
}
static inline int ceph_osd_op_mode_subop(int op)
{
......@@ -281,11 +326,12 @@ static inline int ceph_osd_op_mode_subop(int op)
}
static inline int ceph_osd_op_mode_read(int op)
{
return (op & CEPH_OSD_OP_MODE) == CEPH_OSD_OP_MODE_RD;
return (op & CEPH_OSD_OP_MODE_RD) &&
op != CEPH_OSD_OP_CALL;
}
static inline int ceph_osd_op_mode_modify(int op)
{
return (op & CEPH_OSD_OP_MODE) == CEPH_OSD_OP_MODE_WR;
return op & CEPH_OSD_OP_MODE_WR;
}
/*
......@@ -294,34 +340,38 @@ static inline int ceph_osd_op_mode_modify(int op)
*/
#define CEPH_OSD_TMAP_HDR 'h'
#define CEPH_OSD_TMAP_SET 's'
#define CEPH_OSD_TMAP_CREATE 'c' /* create key */
#define CEPH_OSD_TMAP_RM 'r'
#define CEPH_OSD_TMAP_RMSLOPPY 'R'
extern const char *ceph_osd_op_name(int op);
/*
* osd op flags
*
* An op may be READ, WRITE, or READ|WRITE.
*/
enum {
CEPH_OSD_FLAG_ACK = 1, /* want (or is) "ack" ack */
CEPH_OSD_FLAG_ONNVRAM = 2, /* want (or is) "onnvram" ack */
CEPH_OSD_FLAG_ONDISK = 4, /* want (or is) "ondisk" ack */
CEPH_OSD_FLAG_RETRY = 8, /* resend attempt */
CEPH_OSD_FLAG_READ = 16, /* op may read */
CEPH_OSD_FLAG_WRITE = 32, /* op may write */
CEPH_OSD_FLAG_ORDERSNAP = 64, /* EOLDSNAP if snapc is out of order */
CEPH_OSD_FLAG_PEERSTAT = 128, /* msg includes osd_peer_stat */
CEPH_OSD_FLAG_BALANCE_READS = 256,
CEPH_OSD_FLAG_PARALLELEXEC = 512, /* execute op in parallel */
CEPH_OSD_FLAG_PGOP = 1024, /* pg op, no object */
CEPH_OSD_FLAG_EXEC = 2048, /* op may exec */
CEPH_OSD_FLAG_EXEC_PUBLIC = 4096, /* op may exec (public) */
CEPH_OSD_FLAG_ACK = 0x0001, /* want (or is) "ack" ack */
CEPH_OSD_FLAG_ONNVRAM = 0x0002, /* want (or is) "onnvram" ack */
CEPH_OSD_FLAG_ONDISK = 0x0004, /* want (or is) "ondisk" ack */
CEPH_OSD_FLAG_RETRY = 0x0008, /* resend attempt */
CEPH_OSD_FLAG_READ = 0x0010, /* op may read */
CEPH_OSD_FLAG_WRITE = 0x0020, /* op may write */
CEPH_OSD_FLAG_ORDERSNAP = 0x0040, /* EOLDSNAP if snapc is out of order */
CEPH_OSD_FLAG_PEERSTAT_OLD = 0x0080, /* DEPRECATED msg includes osd_peer_stat */
CEPH_OSD_FLAG_BALANCE_READS = 0x0100,
CEPH_OSD_FLAG_PARALLELEXEC = 0x0200, /* execute op in parallel */
CEPH_OSD_FLAG_PGOP = 0x0400, /* pg op, no object */
CEPH_OSD_FLAG_EXEC = 0x0800, /* op may exec */
CEPH_OSD_FLAG_EXEC_PUBLIC = 0x1000, /* DEPRECATED op may exec (public) */
CEPH_OSD_FLAG_LOCALIZE_READS = 0x2000, /* read from nearby replica, if any */
CEPH_OSD_FLAG_RWORDERED = 0x4000, /* order wrt concurrent reads */
};
enum {
CEPH_OSD_OP_FLAG_EXCL = 1, /* EXCL object create */
CEPH_OSD_OP_FLAG_FAILOK = 2, /* continue despite failure */
};
#define EOLDSNAPC ERESTART /* ORDERSNAP flag set; writer has old snapc*/
......@@ -381,7 +431,11 @@ struct ceph_osd_op {
__le64 ver;
__u8 flag; /* 0 = unwatch, 1 = watch */
} __attribute__ ((packed)) watch;
};
struct {
__le64 offset, length;
__le64 src_offset;
} __attribute__ ((packed)) clonerange;
};
__le32 payload_len;
} __attribute__ ((packed));
......@@ -424,5 +478,4 @@ struct ceph_osd_reply_head {
} __attribute__ ((packed));
#endif
include/linux/crush/crush.h
View file @ 4c7a08c8
......@@ -162,6 +162,8 @@ struct crush_map {
__u32 choose_local_fallback_tries;
/* choose attempts before giving up */
__u32 choose_total_tries;
/* attempt chooseleaf inner descent once; on failure retry outer descent */
__u32 chooseleaf_descend_once;
};
......
net/ceph/ceph_common.c
View file @ 4c7a08c8
......@@ -26,6 +26,22 @@
#include "crypto.h"
/*
* Module compatibility interface. For now it doesn't do anything,
* but its existence signals a certain level of functionality.
*
* The data buffer is used to pass information both to and from
* libceph. The return value indicates whether libceph determines
* it is compatible with the caller (from another kernel module),
* given the provided data.
*
* The data pointer can be null.
*/
bool libceph_compatible(void *data)
{
return true;
}
EXPORT_SYMBOL(libceph_compatible);
/*
* find filename portion of a path (/foo/bar/baz -> baz)
......
net/ceph/ceph_strings.c
View file @ 4c7a08c8
......@@ -21,9 +21,15 @@ const char *ceph_osd_op_name(int op)
switch (op) {
case CEPH_OSD_OP_READ: return "read";
case CEPH_OSD_OP_STAT: return "stat";
case CEPH_OSD_OP_MAPEXT: return "mapext";
case CEPH_OSD_OP_SPARSE_READ: return "sparse-read";
case CEPH_OSD_OP_NOTIFY: return "notify";
case CEPH_OSD_OP_NOTIFY_ACK: return "notify-ack";
case CEPH_OSD_OP_ASSERT_VER: return "assert-version";
case CEPH_OSD_OP_MASKTRUNC: return "masktrunc";
case CEPH_OSD_OP_CREATE: return "create";
case CEPH_OSD_OP_WRITE: return "write";
case CEPH_OSD_OP_DELETE: return "delete";
case CEPH_OSD_OP_TRUNCATE: return "truncate";
......@@ -39,6 +45,11 @@ const char *ceph_osd_op_name(int op)
case CEPH_OSD_OP_TMAPUP: return "tmapup";
case CEPH_OSD_OP_TMAPGET: return "tmapget";
case CEPH_OSD_OP_TMAPPUT: return "tmapput";
case CEPH_OSD_OP_WATCH: return "watch";
case CEPH_OSD_OP_CLONERANGE: return "clonerange";
case CEPH_OSD_OP_ASSERT_SRC_VERSION: return "assert-src-version";
case CEPH_OSD_OP_SRC_CMPXATTR: return "src-cmpxattr";
case CEPH_OSD_OP_GETXATTR: return "getxattr";
case CEPH_OSD_OP_GETXATTRS: return "getxattrs";
......@@ -53,6 +64,10 @@ const char *ceph_osd_op_name(int op)
case CEPH_OSD_OP_BALANCEREADS: return "balance-reads";
case CEPH_OSD_OP_UNBALANCEREADS: return "unbalance-reads";
case CEPH_OSD_OP_SCRUB: return "scrub";
case CEPH_OSD_OP_SCRUB_RESERVE: return "scrub-reserve";
case CEPH_OSD_OP_SCRUB_UNRESERVE: return "scrub-unreserve";
case CEPH_OSD_OP_SCRUB_STOP: return "scrub-stop";
case CEPH_OSD_OP_SCRUB_MAP: return "scrub-map";
case CEPH_OSD_OP_WRLOCK: return "wrlock";
case CEPH_OSD_OP_WRUNLOCK: return "wrunlock";
......@@ -64,10 +79,34 @@ const char *ceph_osd_op_name(int op)
case CEPH_OSD_OP_CALL: return "call";
case CEPH_OSD_OP_PGLS: return "pgls";
case CEPH_OSD_OP_PGLS_FILTER: return "pgls-filter";
case CEPH_OSD_OP_OMAPGETKEYS: return "omap-get-keys";
case CEPH_OSD_OP_OMAPGETVALS: return "omap-get-vals";
case CEPH_OSD_OP_OMAPGETHEADER: return "omap-get-header";
case CEPH_OSD_OP_OMAPGETVALSBYKEYS: return "omap-get-vals-by-keys";
case CEPH_OSD_OP_OMAPSETVALS: return "omap-set-vals";
case CEPH_OSD_OP_OMAPSETHEADER: return "omap-set-header";
case CEPH_OSD_OP_OMAPCLEAR: return "omap-clear";
case CEPH_OSD_OP_OMAPRMKEYS: return "omap-rm-keys";
}
return "???";
}
const char *ceph_osd_state_name(int s)
{
switch (s) {
case CEPH_OSD_EXISTS:
return "exists";
case CEPH_OSD_UP:
return "up";
case CEPH_OSD_AUTOOUT:
return "autoout";
case CEPH_OSD_NEW:
return "new";
default:
return "???";
}
}
const char *ceph_pool_op_name(int op)
{
......
net/ceph/crush/mapper.c
View file @ 4c7a08c8
......@@ -287,6 +287,7 @@ static int is_out(const struct crush_map *map, const __u32 *weight, int item, in
* @outpos: our position in that vector
* @firstn: true if choosing "first n" items, false if choosing "indep"
* @recurse_to_leaf: true if we want one device under each item of given type
* @descend_once: true if we should only try one descent before giving up
* @out2: second output vector for leaf items (if @recurse_to_leaf)
*/
static int crush_choose(const struct crush_map *map,
......@@ -295,7 +296,7 @@ static int crush_choose(const struct crush_map *map,
int x, int numrep, int type,
int *out, int outpos,
int firstn, int recurse_to_leaf,
int *out2)
int descend_once, int *out2)
{
int rep;
unsigned int ftotal, flocal;
......@@ -391,7 +392,7 @@ static int crush_choose(const struct crush_map *map,
}
reject = 0;
if (recurse_to_leaf) {
if (!collide && recurse_to_leaf) {
if (item < 0) {
if (crush_choose(map,
map->buckets[-1-item],
......@@ -399,6 +400,7 @@ static int crush_choose(const struct crush_map *map,
x, outpos+1, 0,
out2, outpos,
firstn, 0,
map->chooseleaf_descend_once,
NULL) <= outpos)
/* didn't get leaf */
reject = 1;
......@@ -422,7 +424,10 @@ static int crush_choose(const struct crush_map *map,
ftotal++;
flocal++;
if (collide && flocal <= map->choose_local_tries)
if (reject && descend_once)
/* let outer call try again */
skip_rep = 1;
else if (collide && flocal <= map->choose_local_tries)
/* retry locally a few times */
retry_bucket = 1;
else if (map->choose_local_fallback_tries > 0 &&
......@@ -485,6 +490,7 @@ int crush_do_rule(const struct crush_map *map,
int i, j;
int numrep;
int firstn;
const int descend_once = 0;
if ((__u32)ruleno >= map->max_rules) {
dprintk(" bad ruleno %d\n", ruleno);
......@@ -544,7 +550,8 @@ int crush_do_rule(const struct crush_map *map,
curstep->arg2,
o+osize, j,
firstn,
recurse_to_leaf, c+osize);
recurse_to_leaf,
descend_once, c+osize);
}
if (recurse_to_leaf)
......
net/ceph/messenger.c
View file @ 4c7a08c8
......@@ -9,8 +9,9 @@
#include <linux/slab.h>
#include <linux/socket.h>
#include <linux/string.h>
#ifdef CONFIG_BLOCK
#include <linux/bio.h>
#include <linux/blkdev.h>
#endif /* CONFIG_BLOCK */
#include <linux/dns_resolver.h>
#include <net/tcp.h>
......@@ -2651,9 +2652,11 @@ struct ceph_msg *ceph_msg_new(int type, int front_len, gfp_t flags,
m->page_alignment = 0;
m->pages = NULL;
m->pagelist = NULL;
#ifdef CONFIG_BLOCK
m->bio = NULL;
m->bio_iter = NULL;
m->bio_seg = 0;
#endif /* CONFIG_BLOCK */
m->trail = NULL;
/* front */
......
net/ceph/osd_client.c
View file @ 4c7a08c8
......@@ -23,7 +23,7 @@
static const struct ceph_connection_operations osd_con_ops;
static void send_queued(struct ceph_osd_client *osdc);
static void __send_queued(struct ceph_osd_client *osdc);
static int __reset_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd);
static void __register_request(struct ceph_osd_client *osdc,
struct ceph_osd_request *req);
......@@ -32,64 +32,12 @@ static void __unregister_linger_request(struct ceph_osd_client *osdc,
static void __send_request(struct ceph_osd_client *osdc,
struct ceph_osd_request *req);
static int op_needs_trail(int op)
{
switch (op) {
case CEPH_OSD_OP_GETXATTR:
case CEPH_OSD_OP_SETXATTR:
case CEPH_OSD_OP_CMPXATTR:
case CEPH_OSD_OP_CALL:
case CEPH_OSD_OP_NOTIFY:
return 1;
default:
return 0;
}
}
static int op_has_extent(int op)
{
return (op == CEPH_OSD_OP_READ ||
op == CEPH_OSD_OP_WRITE);
}
int ceph_calc_raw_layout(struct ceph_osd_client *osdc,
struct ceph_file_layout *layout,
u64 snapid,
u64 off, u64 *plen, u64 *bno,
struct ceph_osd_request *req,
struct ceph_osd_req_op *op)
{
struct ceph_osd_request_head *reqhead = req->r_request->front.iov_base;
u64 orig_len = *plen;
u64 objoff, objlen; /* extent in object */
int r;
reqhead->snapid = cpu_to_le64(snapid);
/* object extent? */
r = ceph_calc_file_object_mapping(layout, off, plen, bno,
&objoff, &objlen);
if (r < 0)
return r;
if (*plen < orig_len)
dout(" skipping last %llu, final file extent %llu~%llu\n",
orig_len - *plen, off, *plen);
if (op_has_extent(op->op)) {
op->extent.offset = objoff;
op->extent.length = objlen;
}
req->r_num_pages = calc_pages_for(off, *plen);
req->r_page_alignment = off & ~PAGE_MASK;
if (op->op == CEPH_OSD_OP_WRITE)
op->payload_len = *plen;
dout("calc_layout bno=%llx %llu~%llu (%d pages)\n",
*bno, objoff, objlen, req->r_num_pages);
return 0;
}
EXPORT_SYMBOL(ceph_calc_raw_layout);
/*
* Implement client access to distributed object storage cluster.
*
......@@ -115,20 +63,48 @@ EXPORT_SYMBOL(ceph_calc_raw_layout);
*
* fill osd op in request message.
*/
static int calc_layout(struct ceph_osd_client *osdc,
struct ceph_vino vino,
static int calc_layout(struct ceph_vino vino,
struct ceph_file_layout *layout,
u64 off, u64 *plen,
struct ceph_osd_request *req,
struct ceph_osd_req_op *op)
{
u64 bno;
u64 orig_len = *plen;
u64 bno = 0;
u64 objoff = 0;
u64 objlen = 0;
int r;
r = ceph_calc_raw_layout(osdc, layout, vino.snap, off,
plen, &bno, req, op);
/* object extent? */
r = ceph_calc_file_object_mapping(layout, off, orig_len, &bno,
&objoff, &objlen);
if (r < 0)
return r;
if (objlen < orig_len) {
*plen = objlen;
dout(" skipping last %llu, final file extent %llu~%llu\n",
orig_len - *plen, off, *plen);
}
if (op_has_extent(op->op)) {
u32 osize = le32_to_cpu(layout->fl_object_size);
op->extent.offset = objoff;
op->extent.length = objlen;
if (op->extent.truncate_size <= off - objoff) {
op->extent.truncate_size = 0;
} else {
op->extent.truncate_size -= off - objoff;
if (op->extent.truncate_size > osize)
op->extent.truncate_size = osize;
}
}
req->r_num_pages = calc_pages_for(off, *plen);
req->r_page_alignment = off & ~PAGE_MASK;
if (op->op == CEPH_OSD_OP_WRITE)
op->payload_len = *plen;
dout("calc_layout bno=%llx %llu~%llu (%d pages)\n",
bno, objoff, objlen, req->r_num_pages);
snprintf(req->r_oid, sizeof(req->r_oid), "%llx.%08llx", vino.ino, bno);
req->r_oid_len = strlen(req->r_oid);
......@@ -148,25 +124,19 @@ void ceph_osdc_release_request(struct kref *kref)
if (req->r_request)
ceph_msg_put(req->r_request);
if (req->r_con_filling_msg) {
dout("%s revoking pages %p from con %p\n", __func__,
req->r_pages, req->r_con_filling_msg);
dout("%s revoking msg %p from con %p\n", __func__,
req->r_reply, req->r_con_filling_msg);
ceph_msg_revoke_incoming(req->r_reply);
req->r_con_filling_msg->ops->put(req->r_con_filling_msg);
req->r_con_filling_msg = NULL;
}
if (req->r_reply)
ceph_msg_put(req->r_reply);
if (req->r_own_pages)
ceph_release_page_vector(req->r_pages,
req->r_num_pages);
#ifdef CONFIG_BLOCK
if (req->r_bio)
bio_put(req->r_bio);
#endif
ceph_put_snap_context(req->r_snapc);
if (req->r_trail) {
ceph_pagelist_release(req->r_trail);
kfree(req->r_trail);
}
ceph_pagelist_release(&req->r_trail);
if (req->r_mempool)
mempool_free(req, req->r_osdc->req_mempool);
else
......@@ -174,34 +144,14 @@ void ceph_osdc_release_request(struct kref *kref)
}
EXPORT_SYMBOL(ceph_osdc_release_request);
static int get_num_ops(struct ceph_osd_req_op *ops, int *needs_trail)
{
int i = 0;
if (needs_trail)
*needs_trail = 0;
while (ops[i].op) {
if (needs_trail && op_needs_trail(ops[i].op))
*needs_trail = 1;
i++;
}
return i;
}
struct ceph_osd_request *ceph_osdc_alloc_request(struct ceph_osd_client *osdc,
int flags,
struct ceph_snap_context *snapc,
struct ceph_osd_req_op *ops,
unsigned int num_op,
bool use_mempool,
gfp_t gfp_flags,
struct page **pages,
struct bio *bio)
gfp_t gfp_flags)
{
struct ceph_osd_request *req;
struct ceph_msg *msg;
int needs_trail;
int num_op = get_num_ops(ops, &needs_trail);
size_t msg_size = sizeof(struct ceph_osd_request_head);
msg_size += num_op*sizeof(struct ceph_osd_op);
......@@ -228,10 +178,6 @@ struct ceph_osd_request *ceph_osdc_alloc_request(struct ceph_osd_client *osdc,
INIT_LIST_HEAD(&req->r_req_lru_item);
INIT_LIST_HEAD(&req->r_osd_item);
req->r_flags = flags;
WARN_ON((flags & (CEPH_OSD_FLAG_READ|CEPH_OSD_FLAG_WRITE)) == 0);
/* create reply message */
if (use_mempool)
msg = ceph_msgpool_get(&osdc->msgpool_op_reply, 0);
......@@ -244,15 +190,7 @@ struct ceph_osd_request *ceph_osdc_alloc_request(struct ceph_osd_client *osdc,
}
req->r_reply = msg;
/* allocate space for the trailing data */
if (needs_trail) {
req->r_trail = kmalloc(sizeof(struct ceph_pagelist), gfp_flags);
if (!req->r_trail) {
ceph_osdc_put_request(req);
return NULL;
}
ceph_pagelist_init(req->r_trail);
}
ceph_pagelist_init(&req->r_trail);
/* create request message; allow space for oid */
msg_size += MAX_OBJ_NAME_SIZE;
......@@ -270,13 +208,6 @@ struct ceph_osd_request *ceph_osdc_alloc_request(struct ceph_osd_client *osdc,
memset(msg->front.iov_base, 0, msg->front.iov_len);
req->r_request = msg;
req->r_pages = pages;
#ifdef CONFIG_BLOCK
if (bio) {
req->r_bio = bio;
bio_get(req->r_bio);
}
#endif
return req;
}
......@@ -289,6 +220,8 @@ static void osd_req_encode_op(struct ceph_osd_request *req,
dst->op = cpu_to_le16(src->op);
switch (src->op) {
case CEPH_OSD_OP_STAT:
break;
case CEPH_OSD_OP_READ:
case CEPH_OSD_OP_WRITE:
dst->extent.offset =
......@@ -300,52 +233,20 @@ static void osd_req_encode_op(struct ceph_osd_request *req,
dst->extent.truncate_seq =
cpu_to_le32(src->extent.truncate_seq);
break;
case CEPH_OSD_OP_GETXATTR:
case CEPH_OSD_OP_SETXATTR:
case CEPH_OSD_OP_CMPXATTR:
BUG_ON(!req->r_trail);
dst->xattr.name_len = cpu_to_le32(src->xattr.name_len);
dst->xattr.value_len = cpu_to_le32(src->xattr.value_len);
dst->xattr.cmp_op = src->xattr.cmp_op;
dst->xattr.cmp_mode = src->xattr.cmp_mode;
ceph_pagelist_append(req->r_trail, src->xattr.name,
src->xattr.name_len);
ceph_pagelist_append(req->r_trail, src->xattr.val,
src->xattr.value_len);
break;
case CEPH_OSD_OP_CALL:
BUG_ON(!req->r_trail);
dst->cls.class_len = src->cls.class_len;
dst->cls.method_len = src->cls.method_len;
dst->cls.indata_len = cpu_to_le32(src->cls.indata_len);
ceph_pagelist_append(req->r_trail, src->cls.class_name,
ceph_pagelist_append(&req->r_trail, src->cls.class_name,
src->cls.class_len);
ceph_pagelist_append(req->r_trail, src->cls.method_name,
ceph_pagelist_append(&req->r_trail, src->cls.method_name,
src->cls.method_len);
ceph_pagelist_append(req->r_trail, src->cls.indata,
ceph_pagelist_append(&req->r_trail, src->cls.indata,
src->cls.indata_len);
break;
case CEPH_OSD_OP_ROLLBACK:
dst->snap.snapid = cpu_to_le64(src->snap.snapid);
break;
case CEPH_OSD_OP_STARTSYNC:
break;
case CEPH_OSD_OP_NOTIFY:
{
__le32 prot_ver = cpu_to_le32(src->watch.prot_ver);
__le32 timeout = cpu_to_le32(src->watch.timeout);
BUG_ON(!req->r_trail);
ceph_pagelist_append(req->r_trail,
&prot_ver, sizeof(prot_ver));
ceph_pagelist_append(req->r_trail,
&timeout, sizeof(timeout));
}
case CEPH_OSD_OP_NOTIFY_ACK:
case CEPH_OSD_OP_WATCH:
dst->watch.cookie = cpu_to_le64(src->watch.cookie);
......@@ -356,6 +257,64 @@ static void osd_req_encode_op(struct ceph_osd_request *req,
pr_err("unrecognized osd opcode %d\n", dst->op);
WARN_ON(1);
break;
case CEPH_OSD_OP_MAPEXT:
case CEPH_OSD_OP_MASKTRUNC:
case CEPH_OSD_OP_SPARSE_READ:
case CEPH_OSD_OP_NOTIFY:
case CEPH_OSD_OP_ASSERT_VER:
case CEPH_OSD_OP_WRITEFULL:
case CEPH_OSD_OP_TRUNCATE:
case CEPH_OSD_OP_ZERO:
case CEPH_OSD_OP_DELETE:
case CEPH_OSD_OP_APPEND:
case CEPH_OSD_OP_SETTRUNC:
case CEPH_OSD_OP_TRIMTRUNC:
case CEPH_OSD_OP_TMAPUP:
case CEPH_OSD_OP_TMAPPUT:
case CEPH_OSD_OP_TMAPGET:
case CEPH_OSD_OP_CREATE:
case CEPH_OSD_OP_ROLLBACK:
case CEPH_OSD_OP_OMAPGETKEYS:
case CEPH_OSD_OP_OMAPGETVALS:
case CEPH_OSD_OP_OMAPGETHEADER:
case CEPH_OSD_OP_OMAPGETVALSBYKEYS:
case CEPH_OSD_OP_MODE_RD:
case CEPH_OSD_OP_OMAPSETVALS:
case CEPH_OSD_OP_OMAPSETHEADER:
case CEPH_OSD_OP_OMAPCLEAR:
case CEPH_OSD_OP_OMAPRMKEYS:
case CEPH_OSD_OP_OMAP_CMP:
case CEPH_OSD_OP_CLONERANGE:
case CEPH_OSD_OP_ASSERT_SRC_VERSION:
case CEPH_OSD_OP_SRC_CMPXATTR:
case CEPH_OSD_OP_GETXATTR:
case CEPH_OSD_OP_GETXATTRS:
case CEPH_OSD_OP_CMPXATTR:
case CEPH_OSD_OP_SETXATTR:
case CEPH_OSD_OP_SETXATTRS:
case CEPH_OSD_OP_RESETXATTRS:
case CEPH_OSD_OP_RMXATTR:
case CEPH_OSD_OP_PULL:
case CEPH_OSD_OP_PUSH:
case CEPH_OSD_OP_BALANCEREADS:
case CEPH_OSD_OP_UNBALANCEREADS:
case CEPH_OSD_OP_SCRUB:
case CEPH_OSD_OP_SCRUB_RESERVE:
case CEPH_OSD_OP_SCRUB_UNRESERVE:
case CEPH_OSD_OP_SCRUB_STOP:
case CEPH_OSD_OP_SCRUB_MAP:
case CEPH_OSD_OP_WRLOCK:
case CEPH_OSD_OP_WRUNLOCK:
case CEPH_OSD_OP_RDLOCK:
case CEPH_OSD_OP_RDUNLOCK:
case CEPH_OSD_OP_UPLOCK:
case CEPH_OSD_OP_DNLOCK:
case CEPH_OSD_OP_PGLS:
case CEPH_OSD_OP_PGLS_FILTER:
pr_err("unsupported osd opcode %s\n",
ceph_osd_op_name(dst->op));
WARN_ON(1);
break;
}
dst->payload_len = cpu_to_le32(src->payload_len);
}
......@@ -365,25 +324,25 @@ static void osd_req_encode_op(struct ceph_osd_request *req,
*
*/
void ceph_osdc_build_request(struct ceph_osd_request *req,
u64 off, u64 *plen,
u64 off, u64 len, unsigned int num_op,
struct ceph_osd_req_op *src_ops,
struct ceph_snap_context *snapc,
struct timespec *mtime,
const char *oid,
int oid_len)
struct ceph_snap_context *snapc, u64 snap_id,
struct timespec *mtime)
{
struct ceph_msg *msg = req->r_request;
struct ceph_osd_request_head *head;
struct ceph_osd_req_op *src_op;
struct ceph_osd_op *op;
void *p;
int num_op = get_num_ops(src_ops, NULL);
size_t msg_size = sizeof(*head) + num_op*sizeof(*op);
int flags = req->r_flags;
u64 data_len = 0;
u64 data_len;
int i;
WARN_ON((flags & (CEPH_OSD_FLAG_READ|CEPH_OSD_FLAG_WRITE)) == 0);
head = msg->front.iov_base;
head->snapid = cpu_to_le64(snap_id);
op = (void *)(head + 1);
p = (void *)(op + num_op);
......@@ -393,23 +352,17 @@ void ceph_osdc_build_request(struct ceph_osd_request *req,
head->flags = cpu_to_le32(flags);
if (flags & CEPH_OSD_FLAG_WRITE)
ceph_encode_timespec(&head->mtime, mtime);
BUG_ON(num_op > (unsigned int) ((u16) -1));
head->num_ops = cpu_to_le16(num_op);
/* fill in oid */
head->object_len = cpu_to_le32(oid_len);
memcpy(p, oid, oid_len);
p += oid_len;
head->object_len = cpu_to_le32(req->r_oid_len);
memcpy(p, req->r_oid, req->r_oid_len);
p += req->r_oid_len;
src_op = src_ops;
while (src_op->op) {
osd_req_encode_op(req, op, src_op);
src_op++;
op++;
}
if (req->r_trail)
data_len += req->r_trail->length;
while (num_op--)
osd_req_encode_op(req, op++, src_op++);
if (snapc) {
head->snap_seq = cpu_to_le64(snapc->seq);
......@@ -420,14 +373,12 @@ void ceph_osdc_build_request(struct ceph_osd_request *req,
}
}
data_len = req->r_trail.length;
if (flags & CEPH_OSD_FLAG_WRITE) {
req->r_request->hdr.data_off = cpu_to_le16(off);
req->r_request->hdr.data_len = cpu_to_le32(*plen + data_len);
} else if (data_len) {
req->r_request->hdr.data_off = 0;
req->r_request->hdr.data_len = cpu_to_le32(data_len);
data_len += len;
}
req->r_request->hdr.data_len = cpu_to_le32(data_len);
req->r_request->page_alignment = req->r_page_alignment;
BUG_ON(p > msg->front.iov_base + msg->front.iov_len);
......@@ -459,34 +410,33 @@ struct ceph_osd_request *ceph_osdc_new_request(struct ceph_osd_client *osdc,
u32 truncate_seq,
u64 truncate_size,
struct timespec *mtime,
bool use_mempool, int num_reply,
bool use_mempool,
int page_align)
{
struct ceph_osd_req_op ops[3];
struct ceph_osd_req_op ops[2];
struct ceph_osd_request *req;
unsigned int num_op = 1;
int r;
memset(&ops, 0, sizeof ops);
ops[0].op = opcode;
ops[0].extent.truncate_seq = truncate_seq;
ops[0].extent.truncate_size = truncate_size;
ops[0].payload_len = 0;
if (do_sync) {
ops[1].op = CEPH_OSD_OP_STARTSYNC;
ops[1].payload_len = 0;
ops[2].op = 0;
} else
ops[1].op = 0;
req = ceph_osdc_alloc_request(osdc, flags,
snapc, ops,
use_mempool,
GFP_NOFS, NULL, NULL);
num_op++;
}
req = ceph_osdc_alloc_request(osdc, snapc, num_op, use_mempool,
GFP_NOFS);
if (!req)
return ERR_PTR(-ENOMEM);
req->r_flags = flags;
/* calculate max write size */
r = calc_layout(osdc, vino, layout, off, plen, req, ops);
r = calc_layout(vino, layout, off, plen, req, ops);
if (r < 0)
return ERR_PTR(r);
req->r_file_layout = *layout; /* keep a copy */
......@@ -496,10 +446,8 @@ struct ceph_osd_request *ceph_osdc_new_request(struct ceph_osd_client *osdc,
req->r_num_pages = calc_pages_for(page_align, *plen);
req->r_page_alignment = page_align;
ceph_osdc_build_request(req, off, plen, ops,
snapc,
mtime,
req->r_oid, req->r_oid_len);
ceph_osdc_build_request(req, off, *plen, num_op, ops,
snapc, vino.snap, mtime);
return req;
}
......@@ -623,8 +571,8 @@ static void osd_reset(struct ceph_connection *con)
down_read(&osdc->map_sem);
mutex_lock(&osdc->request_mutex);
__kick_osd_requests(osdc, osd);
__send_queued(osdc);
mutex_unlock(&osdc->request_mutex);
send_queued(osdc);
up_read(&osdc->map_sem);
}
......@@ -739,31 +687,35 @@ static void remove_old_osds(struct ceph_osd_client *osdc)
*/
static int __reset_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd)
{
struct ceph_osd_request *req;
int ret = 0;
struct ceph_entity_addr *peer_addr;
dout("__reset_osd %p osd%d\n", osd, osd->o_osd);
if (list_empty(&osd->o_requests) &&
list_empty(&osd->o_linger_requests)) {
__remove_osd(osdc, osd);
ret = -ENODEV;
} else if (memcmp(&osdc->osdmap->osd_addr[osd->o_osd],
&osd->o_con.peer_addr,
sizeof(osd->o_con.peer_addr)) == 0 &&
return -ENODEV;
}
peer_addr = &osdc->osdmap->osd_addr[osd->o_osd];
if (!memcmp(peer_addr, &osd->o_con.peer_addr, sizeof (*peer_addr)) &&
!ceph_con_opened(&osd->o_con)) {
struct ceph_osd_request *req;
dout(" osd addr hasn't changed and connection never opened,"
" letting msgr retry");
/* touch each r_stamp for handle_timeout()'s benfit */
list_for_each_entry(req, &osd->o_requests, r_osd_item)
req->r_stamp = jiffies;
ret = -EAGAIN;
} else {
return -EAGAIN;
}
ceph_con_close(&osd->o_con);
ceph_con_open(&osd->o_con, CEPH_ENTITY_TYPE_OSD, osd->o_osd,
&osdc->osdmap->osd_addr[osd->o_osd]);
ceph_con_open(&osd->o_con, CEPH_ENTITY_TYPE_OSD, osd->o_osd, peer_addr);
osd->o_incarnation++;
}
return ret;
return 0;
}
static void __insert_osd(struct ceph_osd_client *osdc, struct ceph_osd *new)
......@@ -1062,16 +1014,13 @@ static void __send_request(struct ceph_osd_client *osdc,
/*
* Send any requests in the queue (req_unsent).
*/
static void send_queued(struct ceph_osd_client *osdc)
static void __send_queued(struct ceph_osd_client *osdc)
{
struct ceph_osd_request *req, *tmp;
dout("send_queued\n");
mutex_lock(&osdc->request_mutex);
list_for_each_entry_safe(req, tmp, &osdc->req_unsent, r_req_lru_item) {
dout("__send_queued\n");
list_for_each_entry_safe(req, tmp, &osdc->req_unsent, r_req_lru_item)
__send_request(osdc, req);
}
mutex_unlock(&osdc->request_mutex);
}
/*
......@@ -1123,8 +1072,8 @@ static void handle_timeout(struct work_struct *work)
}
__schedule_osd_timeout(osdc);
__send_queued(osdc);
mutex_unlock(&osdc->request_mutex);
send_queued(osdc);
up_read(&osdc->map_sem);
}
......@@ -1462,7 +1411,9 @@ void ceph_osdc_handle_map(struct ceph_osd_client *osdc, struct ceph_msg *msg)
if (ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_FULL))
ceph_monc_request_next_osdmap(&osdc->client->monc);
send_queued(osdc);
mutex_lock(&osdc->request_mutex);
__send_queued(osdc);
mutex_unlock(&osdc->request_mutex);
up_read(&osdc->map_sem);
wake_up_all(&osdc->client->auth_wq);
return;
......@@ -1556,8 +1507,7 @@ static void __remove_event(struct ceph_osd_event *event)
int ceph_osdc_create_event(struct ceph_osd_client *osdc,
void (*event_cb)(u64, u64, u8, void *),
int one_shot, void *data,
struct ceph_osd_event **pevent)
void *data, struct ceph_osd_event **pevent)
{
struct ceph_osd_event *event;
......@@ -1567,14 +1517,13 @@ int ceph_osdc_create_event(struct ceph_osd_client *osdc,
dout("create_event %p\n", event);
event->cb = event_cb;
event->one_shot = one_shot;
event->one_shot = 0;
event->data = data;
event->osdc = osdc;
INIT_LIST_HEAD(&event->osd_node);
RB_CLEAR_NODE(&event->node);
kref_init(&event->kref); /* one ref for us */
kref_get(&event->kref); /* one ref for the caller */
init_completion(&event->completion);
spin_lock(&osdc->event_lock);
event->cookie = ++osdc->event_count;
......@@ -1610,7 +1559,6 @@ static void do_event_work(struct work_struct *work)
dout("do_event_work completing %p\n", event);
event->cb(ver, notify_id, opcode, event->data);
complete(&event->completion);
dout("do_event_work completed %p\n", event);
ceph_osdc_put_event(event);
kfree(event_work);
......@@ -1620,7 +1568,8 @@ static void do_event_work(struct work_struct *work)
/*
* Process osd watch notifications
*/
void handle_watch_notify(struct ceph_osd_client *osdc, struct ceph_msg *msg)
static void handle_watch_notify(struct ceph_osd_client *osdc,
struct ceph_msg *msg)
{
void *p, *end;
u8 proto_ver;
......@@ -1641,9 +1590,8 @@ void handle_watch_notify(struct ceph_osd_client *osdc, struct ceph_msg *msg)
spin_lock(&osdc->event_lock);
event = __find_event(osdc, cookie);
if (event) {
BUG_ON(event->one_shot);
get_event(event);
if (event->one_shot)
__remove_event(event);
}
spin_unlock(&osdc->event_lock);
dout("handle_watch_notify cookie %lld ver %lld event %p\n",
......@@ -1668,7 +1616,6 @@ void handle_watch_notify(struct ceph_osd_client *osdc, struct ceph_msg *msg)
return;
done_err:
complete(&event->completion);
ceph_osdc_put_event(event);
return;
......@@ -1677,21 +1624,6 @@ void handle_watch_notify(struct ceph_osd_client *osdc, struct ceph_msg *msg)
return;
}
int ceph_osdc_wait_event(struct ceph_osd_event *event, unsigned long timeout)
{
int err;
dout("wait_event %p\n", event);
err = wait_for_completion_interruptible_timeout(&event->completion,
timeout * HZ);
ceph_osdc_put_event(event);
if (err > 0)
err = 0;
dout("wait_event %p returns %d\n", event, err);
return err;
}
EXPORT_SYMBOL(ceph_osdc_wait_event);
/*
* Register request, send initial attempt.
*/
......@@ -1706,7 +1638,7 @@ int ceph_osdc_start_request(struct ceph_osd_client *osdc,
#ifdef CONFIG_BLOCK
req->r_request->bio = req->r_bio;
#endif
req->r_request->trail = req->r_trail;
req->r_request->trail = &req->r_trail;
register_request(osdc, req);
......@@ -1865,7 +1797,6 @@ int ceph_osdc_init(struct ceph_osd_client *osdc, struct ceph_client *client)
out:
return err;
}
EXPORT_SYMBOL(ceph_osdc_init);
void ceph_osdc_stop(struct ceph_osd_client *osdc)
{
......@@ -1882,7 +1813,6 @@ void ceph_osdc_stop(struct ceph_osd_client *osdc)
ceph_msgpool_destroy(&osdc->msgpool_op);
ceph_msgpool_destroy(&osdc->msgpool_op_reply);
}
EXPORT_SYMBOL(ceph_osdc_stop);
/*
* Read some contiguous pages. If we cross a stripe boundary, shorten
......@@ -1902,7 +1832,7 @@ int ceph_osdc_readpages(struct ceph_osd_client *osdc,
req = ceph_osdc_new_request(osdc, layout, vino, off, plen,
CEPH_OSD_OP_READ, CEPH_OSD_FLAG_READ,
NULL, 0, truncate_seq, truncate_size, NULL,
false, 1, page_align);
false, page_align);
if (IS_ERR(req))
return PTR_ERR(req);
......@@ -1931,8 +1861,7 @@ int ceph_osdc_writepages(struct ceph_osd_client *osdc, struct ceph_vino vino,
u64 off, u64 len,
u32 truncate_seq, u64 truncate_size,
struct timespec *mtime,
struct page **pages, int num_pages,
int flags, int do_sync, bool nofail)
struct page **pages, int num_pages)
{
struct ceph_osd_request *req;
int rc = 0;
......@@ -1941,11 +1870,10 @@ int ceph_osdc_writepages(struct ceph_osd_client *osdc, struct ceph_vino vino,
BUG_ON(vino.snap != CEPH_NOSNAP);
req = ceph_osdc_new_request(osdc, layout, vino, off, &len,
CEPH_OSD_OP_WRITE,
flags | CEPH_OSD_FLAG_ONDISK |
CEPH_OSD_FLAG_WRITE,
snapc, do_sync,
CEPH_OSD_FLAG_ONDISK | CEPH_OSD_FLAG_WRITE,
snapc, 0,
truncate_seq, truncate_size, mtime,
nofail, 1, page_align);
true, page_align);
if (IS_ERR(req))
return PTR_ERR(req);
......@@ -1954,7 +1882,7 @@ int ceph_osdc_writepages(struct ceph_osd_client *osdc, struct ceph_vino vino,
dout("writepages %llu~%llu (%d pages)\n", off, len,
req->r_num_pages);
rc = ceph_osdc_start_request(osdc, req, nofail);
rc = ceph_osdc_start_request(osdc, req, true);
if (!rc)
rc = ceph_osdc_wait_request(osdc, req);
......@@ -2047,7 +1975,7 @@ static struct ceph_msg *get_reply(struct ceph_connection *con,
if (data_len > 0) {
int want = calc_pages_for(req->r_page_alignment, data_len);
if (unlikely(req->r_num_pages < want)) {
if (req->r_pages && unlikely(req->r_num_pages < want)) {
pr_warning("tid %lld reply has %d bytes %d pages, we"
" had only %d pages ready\n", tid, data_len,
want, req->r_num_pages);
......
net/ceph/osdmap.c
View file @ 4c7a08c8
......@@ -13,26 +13,18 @@
char *ceph_osdmap_state_str(char *str, int len, int state)
{
int flag = 0;
if (!len)
goto done;
return str;
*str = '\0';
if (state) {
if (state & CEPH_OSD_EXISTS) {
if ((state & CEPH_OSD_EXISTS) && (state & CEPH_OSD_UP))
snprintf(str, len, "exists, up");
else if (state & CEPH_OSD_EXISTS)
snprintf(str, len, "exists");
flag = 1;
}
if (state & CEPH_OSD_UP) {
snprintf(str, len, "%s%s%s", str, (flag ? ", " : ""),
"up");
flag = 1;
}
} else {
else if (state & CEPH_OSD_UP)
snprintf(str, len, "up");
else
snprintf(str, len, "doesn't exist");
}
done:
return str;
}
......@@ -170,6 +162,7 @@ static struct crush_map *crush_decode(void *pbyval, void *end)
c->choose_local_tries = 2;
c->choose_local_fallback_tries = 5;
c->choose_total_tries = 19;
c->chooseleaf_descend_once = 0;
ceph_decode_need(p, end, 4*sizeof(u32), bad);
magic = ceph_decode_32(p);
......@@ -336,6 +329,11 @@ static struct crush_map *crush_decode(void *pbyval, void *end)
dout("crush decode tunable choose_total_tries = %d",
c->choose_total_tries);
ceph_decode_need(p, end, sizeof(u32), done);
c->chooseleaf_descend_once = ceph_decode_32(p);
dout("crush decode tunable chooseleaf_descend_once = %d",
c->chooseleaf_descend_once);
done:
dout("crush_decode success\n");
return c;
......@@ -1010,7 +1008,7 @@ struct ceph_osdmap *osdmap_apply_incremental(void **p, void *end,
* pass a stride back to the caller.
*/
int ceph_calc_file_object_mapping(struct ceph_file_layout *layout,
u64 off, u64 *plen,
u64 off, u64 len,
u64 *ono,
u64 *oxoff, u64 *oxlen)
{
......@@ -1021,7 +1019,7 @@ int ceph_calc_file_object_mapping(struct ceph_file_layout *layout,
u32 su_per_object;
u64 t, su_offset;
dout("mapping %llu~%llu osize %u fl_su %u\n", off, *plen,
dout("mapping %llu~%llu osize %u fl_su %u\n", off, len,
osize, su);
if (su == 0 || sc == 0)
goto invalid;
......@@ -1054,11 +1052,10 @@ int ceph_calc_file_object_mapping(struct ceph_file_layout *layout,
/*
* Calculate the length of the extent being written to the selected
* object. This is the minimum of the full length requested (plen) or
* object. This is the minimum of the full length requested (len) or
* the remainder of the current stripe being written to.
*/
*oxlen = min_t(u64, *plen, su - su_offset);
*plen = *oxlen;
*oxlen = min_t(u64, len, su - su_offset);
dout(" obj extent %llu~%llu\n", *oxoff, *oxlen);
return 0;
......
net/ceph/pagevec.c
View file @ 4c7a08c8
......@@ -12,7 +12,7 @@
/*
* build a vector of user pages
*/
struct page **ceph_get_direct_page_vector(const char __user *data,
struct page **ceph_get_direct_page_vector(const void __user *data,
int num_pages, bool write_page)
{
struct page **pages;
......@@ -93,7 +93,7 @@ EXPORT_SYMBOL(ceph_alloc_page_vector);
* copy user data into a page vector
*/
int ceph_copy_user_to_page_vector(struct page **pages,
const char __user *data,
const void __user *data,
loff_t off, size_t len)
{
int i = 0;
......@@ -118,17 +118,17 @@ int ceph_copy_user_to_page_vector(struct page **pages,
}
EXPORT_SYMBOL(ceph_copy_user_to_page_vector);
int ceph_copy_to_page_vector(struct page **pages,
const char *data,
void ceph_copy_to_page_vector(struct page **pages,
const void *data,
loff_t off, size_t len)
{
int i = 0;
size_t po = off & ~PAGE_CACHE_MASK;
size_t left = len;
size_t l;
while (left > 0) {
l = min_t(size_t, PAGE_CACHE_SIZE-po, left);
size_t l = min_t(size_t, PAGE_CACHE_SIZE-po, left);
memcpy(page_address(pages[i]) + po, data, l);
data += l;
left -= l;
......@@ -138,21 +138,20 @@ int ceph_copy_to_page_vector(struct page **pages,
i++;
}
}
return len;
}
EXPORT_SYMBOL(ceph_copy_to_page_vector);
int ceph_copy_from_page_vector(struct page **pages,
char *data,
void ceph_copy_from_page_vector(struct page **pages,
void *data,
loff_t off, size_t len)
{
int i = 0;
size_t po = off & ~PAGE_CACHE_MASK;
size_t left = len;
size_t l;
while (left > 0) {
l = min_t(size_t, PAGE_CACHE_SIZE-po, left);
size_t l = min_t(size_t, PAGE_CACHE_SIZE-po, left);
memcpy(data, page_address(pages[i]) + po, l);
data += l;
left -= l;
......@@ -162,7 +161,6 @@ int ceph_copy_from_page_vector(struct page **pages,
i++;
}
}
return len;
}
EXPORT_SYMBOL(ceph_copy_from_page_vector);
......@@ -170,7 +168,7 @@ EXPORT_SYMBOL(ceph_copy_from_page_vector);
* copy user data from a page vector into a user pointer
*/
int ceph_copy_page_vector_to_user(struct page **pages,
char __user *data,
void __user *data,
loff_t off, size_t len)
{
int i = 0;
......
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