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Commit 65511c2b authored by Linus Torvalds's avatar Linus Torvalds
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Merge bk://thebsh.namesys.com/bk/reiser3-linux-2.5-relocation-fix 

into home.transmeta.com:/home/torvalds/v2.5/linux
parents 0b6af0f0 5b9d959a
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Documentation/md.txt
View file @ 65511c2b
Tools that manage md devices can be found at
http://www.<country>.kernel.org/pub/linux/daemons/raid/....
http://www.<country>.kernel.org/pub/linux/utils/raid/....
You can boot (if you selected boot support in the configuration) with your md
device with the following kernel command lines:
You can boot with your md device with the following kernel command
lines:
for old raid arrays without persistent superblocks:
md=<md device no.>,<raid level>,<chunk size factor>,<fault level>,dev0,dev1,...,devn
......@@ -33,4 +33,64 @@ dev0-devn: e.g. /dev/hda1,/dev/hdc1,/dev/sda1,/dev/sdb1
A possible loadlin line (Harald Hoyer <HarryH@Royal.Net>) looks like this:
e:\loadlin\loadlin e:\zimage root=/dev/md0 md=0,0,4,0,/dev/hdb2,/dev/hdc3 ro
-------------------------------
The md driver can support a variety of different superblock formats.
(It doesn't yet, but it can)
The kernel does *NOT* autodetect which format superblock is being
used. It must be told.
Superblock format '0' is treated differently to others for legacy
reasons.
General Rules - apply for all superblock formats
------------------------------------------------
An array is 'created' by writing appropriate superblocks to all
devices.
It is 'assembled' by associating each of these devices with an
particular md virtual device. Once it is completely assembled, it can
be accessed.
An array should be created by a user-space tool. This will write
superblocks to all devices. It will usually mark the array as
'unclean', or with some devices missing so that the kernel md driver
can create approrpriate redundancy (copying in raid1, parity
calculation in raid4/5).
When an array is assembled, it is first initialised with the
SET_ARRAY_INFO ioctl. This contains, in particular, a major and minor
version number. The major version number selects which superblock
format is to be used. The minor number might be used to tune handling
of the format, such as suggesting where on each device to look for the
superblock.
Then each device is added using the ADD_NEW_DISK ioctl. This
provides, in particular, a major and minor number identifying the
device to add.
The array is started with the RUN_ARRAY ioctl.
Once started, new devices can be added. They should have an
appropriate superblock written to them, and then passed be in with
ADD_NEW_DISK.
Devices that have failed or are not yet active can be detached from an
array using HOT_REMOVE_DISK.
Specific Rules that apply to format-0 super block arrays, and
arrays with no superblock (non-presistant).
-------------------------------------------------------------
An array can be 'created' by describing the array (level, chunksize
etc) in a SET_ARRAY_INFO ioctl. This must has major_version==0 and
raid_disks != 0.
Then uninitialised devices can be added with ADD_NEW_DISK. The
structure passed to ADD_NEW_DISK must specify the state of the device
and it's role in the array.
One started with RUN_ARRAY, uninitialised spares can be added with
HOT_ADD_DISK.
drivers/base/platform.c
View file @ 65511c2b
......@@ -75,5 +75,6 @@ int __init platform_bus_init(void)
return bus_register(&platform_bus_type);
}
EXPORT_SYMBOL(platform_bus_type);
EXPORT_SYMBOL(platform_device_register);
EXPORT_SYMBOL(platform_device_unregister);
drivers/md/linear.c
View file @ 65511c2b
......@@ -203,36 +203,34 @@ static int linear_make_request (request_queue_t *q, struct bio *bio)
return 0;
}
bio->bi_bdev = tmp_dev->rdev->bdev;
bio->bi_sector = bio->bi_sector - (tmp_dev->offset << 1);
bio->bi_sector = bio->bi_sector - (tmp_dev->offset << 1) + tmp_dev->rdev->data_offset;
return 1;
}
static int linear_status (char *page, mddev_t *mddev)
static void linear_status (struct seq_file *seq, mddev_t *mddev)
{
int sz = 0;
#undef MD_DEBUG
#ifdef MD_DEBUG
int j;
linear_conf_t *conf = mddev_to_conf(mddev);
sz += sprintf(page+sz, " ");
seq_printf(seq, " ");
for (j = 0; j < conf->nr_zones; j++)
{
sz += sprintf(page+sz, "[%s",
seq_printf(seq, "[%s",
bdev_partition_name(conf->hash_table[j].dev0->rdev->bdev));
if (conf->hash_table[j].dev1)
sz += sprintf(page+sz, "/%s] ",
seq_printf(seq, "/%s] ",
bdev_partition_name(conf->hash_table[j].dev1->rdev->bdev));
else
sz += sprintf(page+sz, "] ");
seq_printf(seq, "] ");
}
sz += sprintf(page+sz, "\n");
seq_printf(seq, "\n");
#endif
sz += sprintf(page+sz, " %dk rounding", mddev->chunk_size/1024);
return sz;
seq_printf(seq, " %dk rounding", mddev->chunk_size/1024);
}
......
drivers/md/md.c
View file @ 65511c2b
......@@ -124,9 +124,6 @@ static ctl_table raid_root_table[] = {
{ .ctl_name = 0 }
};
static void md_recover_arrays(void);
static mdk_thread_t *md_recovery_thread;
sector_t md_size[MAX_MD_DEVS];
static struct block_device_operations md_fops;
......@@ -222,6 +219,7 @@ static mddev_t * mddev_find(int unit)
init_MUTEX(&new->reconfig_sem);
INIT_LIST_HEAD(&new->disks);
INIT_LIST_HEAD(&new->all_mddevs);
init_timer(&new->safemode_timer);
atomic_set(&new->active, 1);
blk_queue_make_request(&new->queue, md_fail_request);
......@@ -272,40 +270,35 @@ static mdk_rdev_t * find_rdev(mddev_t * mddev, dev_t dev)
return NULL;
}
static sector_t calc_dev_sboffset(struct block_device *bdev)
inline static sector_t calc_dev_sboffset(struct block_device *bdev)
{
sector_t size = bdev->bd_inode->i_size >> BLOCK_SIZE_BITS;
return MD_NEW_SIZE_BLOCKS(size);
}
static sector_t calc_dev_size(struct block_device *bdev, mddev_t *mddev)
static sector_t calc_dev_size(mdk_rdev_t *rdev, unsigned chunk_size)
{
sector_t size;
if (mddev->persistent)
size = calc_dev_sboffset(bdev);
else
size = bdev->bd_inode->i_size >> BLOCK_SIZE_BITS;
if (mddev->chunk_size)
size &= ~((sector_t)mddev->chunk_size/1024 - 1);
size = rdev->sb_offset;
if (chunk_size)
size &= ~((sector_t)chunk_size/1024 - 1);
return size;
}
static sector_t zoned_raid_size(mddev_t *mddev)
{
sector_t mask;
mdk_rdev_t * rdev;
struct list_head *tmp;
/*
* do size and offset calculations.
*/
mask = ~((sector_t)mddev->chunk_size/1024 - 1);
ITERATE_RDEV(mddev,rdev,tmp) {
rdev->size &= mask;
ITERATE_RDEV(mddev,rdev,tmp)
md_size[mdidx(mddev)] += rdev->size;
}
return 0;
}
......@@ -389,7 +382,6 @@ static int sync_page_io(struct block_device *bdev, sector_t sector, int size,
static int read_disk_sb(mdk_rdev_t * rdev)
{
sector_t sb_offset;
if (!rdev->sb_page) {
MD_BUG();
......@@ -398,16 +390,8 @@ static int read_disk_sb(mdk_rdev_t * rdev)
if (rdev->sb_loaded)
return 0;
/*
* Calculate the position of the superblock,
* it's at the end of the disk.
*
* It also happens to be a multiple of 4Kb.
*/
sb_offset = calc_dev_sboffset(rdev->bdev);
rdev->sb_offset = sb_offset;
if (!sync_page_io(rdev->bdev, sb_offset<<1, MD_SB_BYTES, rdev->sb_page, READ))
if (!sync_page_io(rdev->bdev, rdev->sb_offset<<1, MD_SB_BYTES, rdev->sb_page, READ))
goto fail;
rdev->sb_loaded = 1;
return 0;
......@@ -486,7 +470,7 @@ static unsigned int calc_sb_csum(mdp_super_t * sb)
* We rely on user-space to write the initial superblock, and support
* reading and updating of superblocks.
* Interface methods are:
* int load_super(mdk_rdev_t *dev, mdk_rdev_t *refdev)
* int load_super(mdk_rdev_t *dev, mdk_rdev_t *refdev, int minor_version)
* loads and validates a superblock on dev.
* if refdev != NULL, compare superblocks on both devices
* Return:
......@@ -511,7 +495,7 @@ static unsigned int calc_sb_csum(mdp_super_t * sb)
struct super_type {
char *name;
struct module *owner;
int (*load_super)(mdk_rdev_t *rdev, mdk_rdev_t *refdev);
int (*load_super)(mdk_rdev_t *rdev, mdk_rdev_t *refdev, int minor_version);
int (*validate_super)(mddev_t *mddev, mdk_rdev_t *rdev);
void (*sync_super)(mddev_t *mddev, mdk_rdev_t *rdev);
};
......@@ -519,10 +503,20 @@ struct super_type {
/*
* load_super for 0.90.0
*/
static int super_90_load(mdk_rdev_t *rdev, mdk_rdev_t *refdev)
static int super_90_load(mdk_rdev_t *rdev, mdk_rdev_t *refdev, int minor_version)
{
mdp_super_t *sb;
int ret;
sector_t sb_offset;
/*
* Calculate the position of the superblock,
* it's at the end of the disk.
*
* It also happens to be a multiple of 4Kb.
*/
sb_offset = calc_dev_sboffset(rdev->bdev);
rdev->sb_offset = sb_offset;
ret = read_disk_sb(rdev);
if (ret) return ret;
......@@ -557,6 +551,12 @@ static int super_90_load(mdk_rdev_t *rdev, mdk_rdev_t *refdev)
}
rdev->preferred_minor = sb->md_minor;
rdev->data_offset = 0;
if (sb->level == MULTIPATH)
rdev->desc_nr = -1;
else
rdev->desc_nr = sb->this_disk.number;
if (refdev == 0)
ret = 1;
......@@ -582,7 +582,7 @@ static int super_90_load(mdk_rdev_t *rdev, mdk_rdev_t *refdev)
else
ret = 0;
}
rdev->size = calc_dev_size(rdev, sb->chunk_size);
abort:
return ret;
......@@ -597,7 +597,7 @@ static int super_90_validate(mddev_t *mddev, mdk_rdev_t *rdev)
mdp_super_t *sb = (mdp_super_t *)page_address(rdev->sb_page);
if (mddev->raid_disks == 0) {
mddev->major_version = sb->major_version;
mddev->major_version = 0;
mddev->minor_version = sb->minor_version;
mddev->patch_version = sb->patch_version;
mddev->persistent = ! sb->not_persistent;
......@@ -634,7 +634,6 @@ static int super_90_validate(mddev_t *mddev, mdk_rdev_t *rdev)
return -EINVAL;
}
if (mddev->level != LEVEL_MULTIPATH) {
rdev->desc_nr = sb->this_disk.number;
rdev->raid_disk = -1;
rdev->in_sync = rdev->faulty = 0;
desc = sb->disks + rdev->desc_nr;
......@@ -704,10 +703,8 @@ static void super_90_sync(mddev_t *mddev, mdk_rdev_t *rdev)
sb->recovery_cp = mddev->recovery_cp;
sb->cp_events_hi = (mddev->events>>32);
sb->cp_events_lo = (u32)mddev->events;
if (mddev->recovery_cp == MaxSector) {
printk(KERN_INFO "md: marking sb clean...\n");
if (mddev->recovery_cp == MaxSector)
sb->state = (1<< MD_SB_CLEAN);
}
} else
sb->recovery_cp = 0;
......@@ -717,7 +714,7 @@ static void super_90_sync(mddev_t *mddev, mdk_rdev_t *rdev)
sb->disks[0].state = (1<<MD_DISK_REMOVED);
ITERATE_RDEV(mddev,rdev2,tmp) {
mdp_disk_t *d;
if (rdev2->raid_disk >= 0)
if (rdev2->raid_disk >= 0 && rdev2->in_sync && !rdev2->faulty)
rdev2->desc_nr = rdev2->raid_disk;
else
rdev2->desc_nr = next_spare++;
......@@ -726,7 +723,7 @@ static void super_90_sync(mddev_t *mddev, mdk_rdev_t *rdev)
d->number = rdev2->desc_nr;
d->major = MAJOR(rdev2->bdev->bd_dev);
d->minor = MINOR(rdev2->bdev->bd_dev);
if (rdev2->raid_disk >= 0)
if (rdev2->raid_disk >= 0 && rdev->in_sync && !rdev2->faulty)
d->raid_disk = rdev2->raid_disk;
else
d->raid_disk = rdev2->desc_nr; /* compatibility */
......@@ -766,6 +763,210 @@ static void super_90_sync(mddev_t *mddev, mdk_rdev_t *rdev)
sb->sb_csum = calc_sb_csum(sb);
}
/*
* version 1 superblock
*/
static unsigned int calc_sb_1_csum(struct mdp_superblock_1 * sb)
{
unsigned int disk_csum, csum;
int size = 256 + sb->max_dev*2;
disk_csum = sb->sb_csum;
sb->sb_csum = 0;
csum = csum_partial((void *)sb, size, 0);
sb->sb_csum = disk_csum;
return csum;
}
static int super_1_load(mdk_rdev_t *rdev, mdk_rdev_t *refdev, int minor_version)
{
struct mdp_superblock_1 *sb;
int ret;
sector_t sb_offset;
/*
* Calculate the position of the superblock.
* It is always aligned to a 4K boundary and
* depeding on minor_version, it can be:
* 0: At least 8K, but less than 12K, from end of device
* 1: At start of device
* 2: 4K from start of device.
*/
switch(minor_version) {
case 0:
sb_offset = rdev->bdev->bd_inode->i_size >> 9;
sb_offset -= 8*2;
sb_offset &= ~(4*2);
/* convert from sectors to K */
sb_offset /= 2;
break;
case 1:
sb_offset = 0;
break;
case 2:
sb_offset = 4;
break;
default:
return -EINVAL;
}
rdev->sb_offset = sb_offset;
ret = read_disk_sb(rdev);
if (ret) return ret;
sb = (struct mdp_superblock_1*)page_address(rdev->sb_page);
if (sb->magic != cpu_to_le32(MD_SB_MAGIC) ||
sb->major_version != cpu_to_le32(1) ||
le32_to_cpu(sb->max_dev) > (4096-256)/2 ||
le64_to_cpu(sb->super_offset) != (rdev->sb_offset<<1) ||
sb->feature_map != 0)
return -EINVAL;
if (calc_sb_1_csum(sb) != sb->sb_csum) {
printk(BAD_CSUM, bdev_partition_name(rdev->bdev));
return -EINVAL;
}
rdev->preferred_minor = 0xffff;
rdev->data_offset = le64_to_cpu(sb->data_offset);
if (refdev == 0)
return 1;
else {
__u64 ev1, ev2;
struct mdp_superblock_1 *refsb =
(struct mdp_superblock_1*)page_address(refdev->sb_page);
if (memcmp(sb->set_uuid, refsb->set_uuid, 16) != 0 ||
sb->level != refsb->level ||
sb->layout != refsb->layout ||
sb->chunksize != refsb->chunksize) {
printk(KERN_WARNING "md: %s has strangely different superblock to %s\n",
bdev_partition_name(rdev->bdev),
bdev_partition_name(refdev->bdev));
return -EINVAL;
}
ev1 = le64_to_cpu(sb->events);
ev2 = le64_to_cpu(refsb->events);
if (ev1 > ev2)
return 1;
}
if (minor_version)
rdev->size = ((rdev->bdev->bd_inode->i_size>>9) - le64_to_cpu(sb->data_offset)) / 2;
else
rdev->size = rdev->sb_offset;
if (rdev->size < le64_to_cpu(sb->data_size)/2)
return -EINVAL;
rdev->size = le64_to_cpu(sb->data_size)/2;
if (le32_to_cpu(sb->chunksize))
rdev->size &= ~((sector_t)le32_to_cpu(sb->chunksize)/2 - 1);
return 0;
}
static int super_1_validate(mddev_t *mddev, mdk_rdev_t *rdev)
{
struct mdp_superblock_1 *sb = (struct mdp_superblock_1*)page_address(rdev->sb_page);
if (mddev->raid_disks == 0) {
mddev->major_version = 1;
mddev->minor_version = 0;
mddev->patch_version = 0;
mddev->persistent = 1;
mddev->chunk_size = le32_to_cpu(sb->chunksize) << 9;
mddev->ctime = le64_to_cpu(sb->ctime) & ((1ULL << 32)-1);
mddev->utime = le64_to_cpu(sb->utime) & ((1ULL << 32)-1);
mddev->level = le32_to_cpu(sb->level);
mddev->layout = le32_to_cpu(sb->layout);
mddev->raid_disks = le32_to_cpu(sb->raid_disks);
mddev->size = (u32)le64_to_cpu(sb->size);
mddev->events = le64_to_cpu(sb->events);
mddev->recovery_cp = le64_to_cpu(sb->resync_offset);
memcpy(mddev->uuid, sb->set_uuid, 16);
mddev->max_disks = (4096-256)/2;
} else {
__u64 ev1;
ev1 = le64_to_cpu(sb->events);
++ev1;
if (ev1 < mddev->events)
return -EINVAL;
}
if (mddev->level != LEVEL_MULTIPATH) {
int role;
rdev->desc_nr = le32_to_cpu(sb->dev_number);
role = le16_to_cpu(sb->dev_roles[rdev->desc_nr]);
switch(role) {
case 0xffff: /* spare */
rdev->in_sync = 0;
rdev->faulty = 0;
rdev->raid_disk = -1;
break;
case 0xfffe: /* faulty */
rdev->in_sync = 0;
rdev->faulty = 1;
rdev->raid_disk = -1;
break;
default:
rdev->in_sync = 1;
rdev->faulty = 0;
rdev->raid_disk = role;
break;
}
}
return 0;
}
static void super_1_sync(mddev_t *mddev, mdk_rdev_t *rdev)
{
struct mdp_superblock_1 *sb;
struct list_head *tmp;
mdk_rdev_t *rdev2;
int max_dev, i;
/* make rdev->sb match mddev and rdev data. */
sb = (struct mdp_superblock_1*)page_address(rdev->sb_page);
sb->feature_map = 0;
sb->pad0 = 0;
memset(sb->pad1, 0, sizeof(sb->pad1));
memset(sb->pad2, 0, sizeof(sb->pad2));
memset(sb->pad3, 0, sizeof(sb->pad3));
sb->utime = cpu_to_le64((__u64)mddev->utime);
sb->events = cpu_to_le64(mddev->events);
if (mddev->in_sync)
sb->resync_offset = cpu_to_le64(mddev->recovery_cp);
else
sb->resync_offset = cpu_to_le64(0);
max_dev = 0;
ITERATE_RDEV(mddev,rdev2,tmp)
if (rdev2->desc_nr > max_dev)
max_dev = rdev2->desc_nr;
sb->max_dev = max_dev;
for (i=0; i<max_dev;i++)
sb->dev_roles[max_dev] = cpu_to_le16(0xfffe);
ITERATE_RDEV(mddev,rdev2,tmp) {
i = rdev2->desc_nr;
if (rdev2->faulty)
sb->dev_roles[i] = cpu_to_le16(0xfffe);
else if (rdev2->in_sync)
sb->dev_roles[i] = cpu_to_le16(rdev2->raid_disk);
else
sb->dev_roles[i] = cpu_to_le16(0xffff);
}
sb->recovery_offset = cpu_to_le64(0); /* not supported yet */
}
struct super_type super_types[] = {
[0] = {
.name = "0.90.0",
......@@ -774,9 +975,14 @@ struct super_type super_types[] = {
.validate_super = super_90_validate,
.sync_super = super_90_sync,
},
[1] = {
.name = "md-1",
.owner = THIS_MODULE,
.load_super = super_1_load,
.validate_super = super_1_validate,
.sync_super = super_1_sync,
},
};
static mdk_rdev_t * match_dev_unit(mddev_t *mddev, mdk_rdev_t *dev)
{
......@@ -804,13 +1010,13 @@ static int match_mddev_units(mddev_t *mddev1, mddev_t *mddev2)
static LIST_HEAD(pending_raid_disks);
static void bind_rdev_to_array(mdk_rdev_t * rdev, mddev_t * mddev)
static int bind_rdev_to_array(mdk_rdev_t * rdev, mddev_t * mddev)
{
mdk_rdev_t *same_pdev;
if (rdev->mddev) {
MD_BUG();
return;
return -EINVAL;
}
same_pdev = match_dev_unit(mddev, rdev);
if (same_pdev)
......@@ -820,9 +1026,25 @@ static void bind_rdev_to_array(mdk_rdev_t * rdev, mddev_t * mddev)
mdidx(mddev), bdev_partition_name(rdev->bdev),
bdev_partition_name(same_pdev->bdev));
/* Verify rdev->desc_nr is unique.
* If it is -1, assign a free number, else
* check number is not in use
*/
if (rdev->desc_nr < 0) {
int choice = 0;
if (mddev->pers) choice = mddev->raid_disks;
while (find_rdev_nr(mddev, choice))
choice++;
rdev->desc_nr = choice;
} else {
if (find_rdev_nr(mddev, rdev->desc_nr))
return -EBUSY;
}
list_add(&rdev->same_set, &mddev->disks);
rdev->mddev = mddev;
printk(KERN_INFO "md: bind<%s>\n", bdev_partition_name(rdev->bdev));
return 0;
}
static void unbind_rdev_from_array(mdk_rdev_t * rdev)
......@@ -910,6 +1132,7 @@ static void export_array(mddev_t *mddev)
if (!list_empty(&mddev->disks))
MD_BUG();
mddev->raid_disks = 0;
mddev->major_version = 0;
}
#undef BAD_CSUM
......@@ -994,8 +1217,6 @@ void md_print_devices(void)
static int write_disk_sb(mdk_rdev_t * rdev)
{
sector_t sb_offset;
sector_t size;
if (!rdev->sb_loaded) {
MD_BUG();
......@@ -1006,35 +1227,12 @@ static int write_disk_sb(mdk_rdev_t * rdev)
return 1;
}
sb_offset = calc_dev_sboffset(rdev->bdev);
if (rdev->sb_offset != sb_offset) {
printk(KERN_INFO "%s's sb offset has changed from %llu to %llu, skipping\n",
bdev_partition_name(rdev->bdev),
(unsigned long long)rdev->sb_offset,
(unsigned long long)sb_offset);
goto skip;
}
/*
* If the disk went offline meanwhile and it's just a spare, then
* its size has changed to zero silently, and the MD code does
* not yet know that it's faulty.
*/
size = calc_dev_size(rdev->bdev, rdev->mddev);
if (size != rdev->size) {
printk(KERN_INFO "%s's size has changed from %llu to %llu since import, skipping\n",
bdev_partition_name(rdev->bdev),
(unsigned long long)rdev->size,
(unsigned long long)size);
goto skip;
}
printk(KERN_INFO "(write) %s's sb offset: %llu\n", bdev_partition_name(rdev->bdev), (unsigned long long)sb_offset);
dprintk(KERN_INFO "(write) %s's sb offset: %llu\n", bdev_partition_name(rdev->bdev),
(unsigned long long)rdev->sb_offset);
if (sync_page_io(rdev->bdev, rdev->sb_offset<<1, MD_SB_BYTES, rdev->sb_page, WRITE))
return 0;
if (!sync_page_io(rdev->bdev, sb_offset<<1, MD_SB_BYTES, rdev->sb_page, WRITE))
goto fail;
skip:
return 0;
fail:
printk("md: write_disk_sb failed for device %s\n", bdev_partition_name(rdev->bdev));
return 1;
}
......@@ -1045,7 +1243,8 @@ static void sync_sbs(mddev_t * mddev)
struct list_head *tmp;
ITERATE_RDEV(mddev,rdev,tmp) {
super_90_sync(mddev, rdev);
super_types[mddev->major_version].
sync_super(mddev, rdev);
rdev->sb_loaded = 1;
}
}
......@@ -1079,20 +1278,20 @@ static void md_update_sb(mddev_t * mddev)
if (!mddev->persistent)
return;
printk(KERN_INFO "md: updating md%d RAID superblock on device (in sync %d)\n",
dprintk(KERN_INFO "md: updating md%d RAID superblock on device (in sync %d)\n",
mdidx(mddev),mddev->in_sync);
err = 0;
ITERATE_RDEV(mddev,rdev,tmp) {
printk(KERN_INFO "md: ");
dprintk(KERN_INFO "md: ");
if (rdev->faulty)
printk("(skipping faulty ");
dprintk("(skipping faulty ");
printk("%s ", bdev_partition_name(rdev->bdev));
dprintk("%s ", bdev_partition_name(rdev->bdev));
if (!rdev->faulty) {
err += write_disk_sb(rdev);
} else
printk(")\n");
dprintk(")\n");
if (!err && mddev->level == LEVEL_MULTIPATH)
/* only need to write one superblock... */
break;
......@@ -1107,7 +1306,7 @@ static void md_update_sb(mddev_t * mddev)
}
/*
* Import a device. If 'on_disk', then sanity check the superblock
* Import a device. If 'super_format' >= 0, then sanity check the superblock
*
* mark the device faulty if:
*
......@@ -1116,7 +1315,7 @@ static void md_update_sb(mddev_t * mddev)
*
* a faulty rdev _never_ has rdev->sb set.
*/
static mdk_rdev_t *md_import_device(dev_t newdev, int on_disk)
static mdk_rdev_t *md_import_device(dev_t newdev, int super_format, int super_minor)
{
int err;
mdk_rdev_t *rdev;
......@@ -1141,6 +1340,7 @@ static mdk_rdev_t *md_import_device(dev_t newdev, int on_disk)
rdev->desc_nr = -1;
rdev->faulty = 0;
rdev->in_sync = 0;
rdev->data_offset = 0;
atomic_set(&rdev->nr_pending, 0);
size = rdev->bdev->bd_inode->i_size >> BLOCK_SIZE_BITS;
......@@ -1152,8 +1352,9 @@ static mdk_rdev_t *md_import_device(dev_t newdev, int on_disk)
goto abort_free;
}
if (on_disk) {
err = super_90_load(rdev, NULL);
if (super_format >= 0) {
err = super_types[super_format].
load_super(rdev, NULL, super_minor);
if (err == -EINVAL) {
printk(KERN_WARNING "md: %s has invalid sb, not importing!\n",
bdev_partition_name(rdev->bdev));
......@@ -1206,7 +1407,8 @@ static int analyze_sbs(mddev_t * mddev)
freshest = NULL;
ITERATE_RDEV(mddev,rdev,tmp)
switch (super_90_load(rdev, freshest)) {
switch (super_types[mddev->major_version].
load_super(rdev, freshest, mddev->minor_version)) {
case 1:
freshest = rdev;
break;
......@@ -1218,12 +1420,14 @@ static int analyze_sbs(mddev_t * mddev)
}
super_90_validate(mddev, freshest);
super_types[mddev->major_version].
validate_super(mddev, freshest);
i = 0;
ITERATE_RDEV(mddev,rdev,tmp) {
if (rdev != freshest)
if (super_90_validate(mddev, rdev)) {
if (super_types[mddev->major_version].
validate_super(mddev, rdev)) {
printk(KERN_WARNING "md: kicking non-fresh %s from array!\n",
bdev_partition_name(rdev->bdev));
kick_rdev_from_array(rdev);
......@@ -1278,11 +1482,6 @@ static int device_size_calculation(mddev_t * mddev)
ITERATE_RDEV(mddev,rdev,tmp) {
if (rdev->faulty)
continue;
if (rdev->size) {
MD_BUG();
continue;
}
rdev->size = calc_dev_size(rdev->bdev, mddev);
if (rdev->size < mddev->chunk_size / 1024) {
printk(KERN_WARNING
"md: Dev %s smaller than chunk_size: %lluk < %dk\n",
......@@ -1380,6 +1579,16 @@ static struct gendisk *md_probe(dev_t dev, int *part, void *data)
return NULL;
}
void md_wakeup_thread(mdk_thread_t *thread);
static void md_safemode_timeout(unsigned long data)
{
mddev_t *mddev = (mddev_t *) data;
mddev->safemode = 1;
md_wakeup_thread(mddev->thread);
}
#define TOO_BIG_CHUNKSIZE KERN_ERR \
"too big chunk_size: %d > %d\n"
......@@ -1521,13 +1730,14 @@ static int do_md_run(mddev_t * mddev)
}
atomic_set(&mddev->writes_pending,0);
mddev->safemode = 0;
if (mddev->pers->sync_request)
mddev->in_sync = 0;
else
mddev->in_sync = 1;
mddev->safemode_timer.function = md_safemode_timeout;
mddev->safemode_timer.data = (unsigned long) mddev;
mddev->safemode_delay = (20 * HZ)/1000 +1; /* 20 msec delay */
mddev->in_sync = 1;
md_update_sb(mddev);
md_recover_arrays();
set_bit(MD_RECOVERY_NEEDED, &mddev->recovery);
md_wakeup_thread(mddev->thread);
set_capacity(disk, md_size[mdidx(mddev)]<<1);
return (0);
}
......@@ -1553,7 +1763,6 @@ static int restart_array(mddev_t *mddev)
goto out;
mddev->safemode = 0;
mddev->in_sync = 0;
md_update_sb(mddev);
mddev->ro = 0;
set_disk_ro(disk, 0);
......@@ -1563,7 +1772,8 @@ static int restart_array(mddev_t *mddev)
/*
* Kick recovery or resync if necessary
*/
md_recover_arrays();
set_bit(MD_RECOVERY_NEEDED, &mddev->recovery);
md_wakeup_thread(mddev->thread);
err = 0;
} else {
printk(KERN_ERR "md: md%d has no personality assigned.\n",
......@@ -1593,12 +1803,13 @@ static int do_md_stop(mddev_t * mddev, int ro)
if (mddev->pers) {
if (mddev->sync_thread) {
if (mddev->recovery_running > 0)
mddev->recovery_running = -1;
set_bit(MD_RECOVERY_INTR, &mddev->recovery);
md_unregister_thread(mddev->sync_thread);
mddev->sync_thread = NULL;
}
del_timer_sync(&mddev->safemode_timer);
invalidate_device(mk_kdev(disk->major, disk->first_minor), 1);
if (ro) {
......@@ -1699,7 +1910,7 @@ static void autorun_devices(void)
printk(KERN_INFO "md: considering %s ...\n", bdev_partition_name(rdev0->bdev));
INIT_LIST_HEAD(&candidates);
ITERATE_RDEV_PENDING(rdev,tmp)
if (super_90_load(rdev, rdev0) >= 0) {
if (super_90_load(rdev, rdev0, 0) >= 0) {
printk(KERN_INFO "md: adding %s ...\n", bdev_partition_name(rdev->bdev));
list_move(&rdev->same_set, &candidates);
}
......@@ -1717,7 +1928,8 @@ static void autorun_devices(void)
if (mddev_lock(mddev))
printk(KERN_WARNING "md: md%d locked, cannot run\n",
mdidx(mddev));
else if (mddev->raid_disks || !list_empty(&mddev->disks)) {
else if (mddev->raid_disks || mddev->major_version
|| !list_empty(&mddev->disks)) {
printk(KERN_WARNING "md: md%d already running, cannot run %s\n",
mdidx(mddev), bdev_partition_name(rdev0->bdev));
mddev_unlock(mddev);
......@@ -1725,7 +1937,8 @@ static void autorun_devices(void)
printk(KERN_INFO "md: created md%d\n", mdidx(mddev));
ITERATE_RDEV_GENERIC(candidates,rdev,tmp) {
list_del_init(&rdev->same_set);
bind_rdev_to_array(rdev, mddev);
if (bind_rdev_to_array(rdev, mddev))
export_rdev(rdev);
}
autorun_array(mddev);
mddev_unlock(mddev);
......@@ -1778,7 +1991,7 @@ static int autostart_array(dev_t startdev)
mdp_super_t *sb = NULL;
mdk_rdev_t *start_rdev = NULL, *rdev;
start_rdev = md_import_device(startdev, 1);
start_rdev = md_import_device(startdev, 0, 0);
if (IS_ERR(start_rdev)) {
printk(KERN_WARNING "md: could not import %s!\n", partition_name(startdev));
return err;
......@@ -1812,7 +2025,7 @@ static int autostart_array(dev_t startdev)
continue;
if (dev == startdev)
continue;
rdev = md_import_device(dev, 1);
rdev = md_import_device(dev, 0, 0);
if (IS_ERR(rdev)) {
printk(KERN_WARNING "md: could not import %s, trying to run array nevertheless.\n",
partition_name(dev));
......@@ -1874,10 +2087,9 @@ static int get_array_info(mddev_t * mddev, void * arg)
}
}
info.major_version = mddev->major_version;
info.major_version = mddev->major_version;
info.minor_version = mddev->minor_version;
info.patch_version = mddev->patch_version;
info.patch_version = 1;
info.ctime = mddev->ctime;
info.level = mddev->level;
info.size = mddev->size;
......@@ -1888,7 +2100,7 @@ static int get_array_info(mddev_t * mddev, void * arg)
info.utime = mddev->utime;
info.state = 0;
if (mddev->recovery_cp == MaxSector)
if (mddev->in_sync)
info.state = (1<<MD_SB_CLEAN);
info.active_disks = active;
info.working_disks = working;
......@@ -1943,13 +2155,13 @@ static int get_disk_info(mddev_t * mddev, void * arg)
static int add_new_disk(mddev_t * mddev, mdu_disk_info_t *info)
{
sector_t size;
mdk_rdev_t *rdev;
dev_t dev;
dev = MKDEV(info->major,info->minor);
if (!mddev->raid_disks) {
int err;
/* expecting a device which has a superblock */
rdev = md_import_device(dev, 1);
rdev = md_import_device(dev, mddev->major_version, mddev->minor_version);
if (IS_ERR(rdev)) {
printk(KERN_WARNING "md: md_import_device returned %ld\n", PTR_ERR(rdev));
return PTR_ERR(rdev);
......@@ -1957,7 +2169,8 @@ static int add_new_disk(mddev_t * mddev, mdu_disk_info_t *info)
if (!list_empty(&mddev->disks)) {
mdk_rdev_t *rdev0 = list_entry(mddev->disks.next,
mdk_rdev_t, same_set);
int err = super_90_load(rdev, rdev0);
int err = super_types[mddev->major_version]
.load_super(rdev, rdev0, mddev->minor_version);
if (err < 0) {
printk(KERN_WARNING "md: %s has different UUID to %s\n",
bdev_partition_name(rdev->bdev), bdev_partition_name(rdev0->bdev));
......@@ -1965,12 +2178,52 @@ static int add_new_disk(mddev_t * mddev, mdu_disk_info_t *info)
return -EINVAL;
}
}
bind_rdev_to_array(rdev, mddev);
return 0;
err = bind_rdev_to_array(rdev, mddev);
if (err)
export_rdev(rdev);
return err;
}
/*
* add_new_disk can be used once the array is assembled
* to add "hot spares". They must already have a superblock
* written
*/
if (mddev->pers) {
int err;
if (!mddev->pers->hot_add_disk) {
printk(KERN_WARNING "md%d: personality does not support diskops!\n",
mdidx(mddev));
return -EINVAL;
}
rdev = md_import_device(dev, mddev->major_version,
mddev->minor_version);
if (IS_ERR(rdev)) {
printk(KERN_WARNING "md: md_import_device returned %ld\n", PTR_ERR(rdev));
return PTR_ERR(rdev);
}
rdev->in_sync = 0; /* just to be sure */
rdev->raid_disk = -1;
err = bind_rdev_to_array(rdev, mddev);
if (err)
export_rdev(rdev);
if (mddev->thread)
md_wakeup_thread(mddev->thread);
return err;
}
/* otherwise, add_new_disk is only allowed
* for major_version==0 superblocks
*/
if (mddev->major_version != 0) {
printk(KERN_WARNING "md%d: ADD_NEW_DISK not supported\n",
mdidx(mddev));
return -EINVAL;
}
if (!(info->state & (1<<MD_DISK_FAULTY))) {
rdev = md_import_device (dev, 0);
int err;
rdev = md_import_device (dev, -1, 0);
if (IS_ERR(rdev)) {
printk(KERN_WARNING "md: error, md_import_device() returned %ld\n", PTR_ERR(rdev));
return PTR_ERR(rdev);
......@@ -1987,16 +2240,21 @@ static int add_new_disk(mddev_t * mddev, mdu_disk_info_t *info)
else
rdev->in_sync = 0;
bind_rdev_to_array(rdev, mddev);
err = bind_rdev_to_array(rdev, mddev);
if (err) {
export_rdev(rdev);
return err;
}
if (!mddev->persistent)
if (!mddev->persistent) {
printk(KERN_INFO "md: nonpersistent superblock ...\n");
rdev->sb_offset = rdev->bdev->bd_inode->i_size >> BLOCK_SIZE_BITS;
} else
rdev->sb_offset = calc_dev_sboffset(rdev->bdev);
rdev->size = calc_dev_size(rdev, mddev->chunk_size);
size = calc_dev_size(rdev->bdev, mddev);
rdev->sb_offset = calc_dev_sboffset(rdev->bdev);
if (!mddev->size || (mddev->size > size))
mddev->size = size;
if (!mddev->size || (mddev->size > rdev->size))
mddev->size = rdev->size;
}
return 0;
......@@ -2066,7 +2324,7 @@ static int hot_remove_disk(mddev_t * mddev, dev_t dev)
static int hot_add_disk(mddev_t * mddev, dev_t dev)
{
int i, err;
int err;
unsigned int size;
mdk_rdev_t *rdev;
......@@ -2076,19 +2334,26 @@ static int hot_add_disk(mddev_t * mddev, dev_t dev)
printk(KERN_INFO "md: trying to hot-add %s to md%d ... \n",
partition_name(dev), mdidx(mddev));
if (mddev->major_version != 0) {
printk(KERN_WARNING "md%d: HOT_ADD may only be used with version-0 superblocks.\n",
mdidx(mddev));
return -EINVAL;
}
if (!mddev->pers->hot_add_disk) {
printk(KERN_WARNING "md%d: personality does not support diskops!\n",
mdidx(mddev));
return -EINVAL;
}
rdev = md_import_device (dev, 0);
rdev = md_import_device (dev, -1, 0);
if (IS_ERR(rdev)) {
printk(KERN_WARNING "md: error, md_import_device() returned %ld\n", PTR_ERR(rdev));
return -EINVAL;
}
size = calc_dev_size(rdev->bdev, mddev);
rdev->sb_offset = calc_dev_sboffset(rdev->bdev);
size = calc_dev_size(rdev, mddev->chunk_size);
rdev->size = size;
if (size < mddev->size) {
printk(KERN_WARNING "md%d: disk size %llu blocks < array size %llu\n",
......@@ -2105,27 +2370,21 @@ static int hot_add_disk(mddev_t * mddev, dev_t dev)
goto abort_export;
}
rdev->in_sync = 0;
rdev->desc_nr = -1;
bind_rdev_to_array(rdev, mddev);
/*
* The rest should better be atomic, we can have disk failures
* noticed in interrupt contexts ...
*/
rdev->size = size;
rdev->sb_offset = calc_dev_sboffset(rdev->bdev);
for (i = mddev->raid_disks; i < mddev->max_disks; i++)
if (find_rdev_nr(mddev,i)==NULL)
break;
if (i == mddev->max_disks) {
if (rdev->desc_nr == mddev->max_disks) {
printk(KERN_WARNING "md%d: can not hot-add to full array!\n",
mdidx(mddev));
err = -EBUSY;
goto abort_unbind_export;
}
rdev->desc_nr = i;
rdev->raid_disk = -1;
md_update_sb(mddev);
......@@ -2134,7 +2393,8 @@ static int hot_add_disk(mddev_t * mddev, dev_t dev)
* Kick recovery, maybe this spare has to be added to the
* array immediately.
*/
md_recover_arrays();
set_bit(MD_RECOVERY_NEEDED, &mddev->recovery);
md_wakeup_thread(mddev->thread);
return 0;
......@@ -2146,9 +2406,37 @@ static int hot_add_disk(mddev_t * mddev, dev_t dev)
return err;
}
/*
* set_array_info is used two different ways
* The original usage is when creating a new array.
* In this usage, raid_disks is > = and it together with
* level, size, not_persistent,layout,chunksize determine the
* shape of the array.
* This will always create an array with a type-0.90.0 superblock.
* The newer usage is when assembling an array.
* In this case raid_disks will be 0, and the major_version field is
* use to determine which style super-blocks are to be found on the devices.
* The minor and patch _version numbers are also kept incase the
* super_block handler wishes to interpret them.
*/
static int set_array_info(mddev_t * mddev, mdu_array_info_t *info)
{
if (info->raid_disks == 0) {
/* just setting version number for superblock loading */
if (info->major_version < 0 ||
info->major_version >= sizeof(super_types)/sizeof(super_types[0]) ||
super_types[info->major_version].name == NULL) {
/* maybe try to auto-load a module? */
printk(KERN_INFO "md: superblock version %d not known\n",
info->major_version);
return -EINVAL;
}
mddev->major_version = info->major_version;
mddev->minor_version = info->minor_version;
mddev->patch_version = info->patch_version;
return 0;
}
mddev->major_version = MD_MAJOR_VERSION;
mddev->minor_version = MD_MINOR_VERSION;
mddev->patch_version = MD_PATCHLEVEL_VERSION;
......@@ -2169,6 +2457,7 @@ static int set_array_info(mddev_t * mddev, mdu_array_info_t *info)
mddev->layout = info->layout;
mddev->chunk_size = info->chunk_size;
mddev->max_disks = MD_SB_DISKS;
/*
......@@ -2282,9 +2571,11 @@ static int md_ioctl(struct inode *inode, struct file *file,
err = -EBUSY;
goto abort_unlock;
}
if (arg) {
{
mdu_array_info_t info;
if (copy_from_user(&info, (void*)arg, sizeof(info))) {
if (!arg)
memset(&info, 0, sizeof(info));
else if (copy_from_user(&info, (void*)arg, sizeof(info))) {
err = -EFAULT;
goto abort_unlock;
}
......@@ -2473,12 +2764,6 @@ static struct block_device_operations md_fops =
.ioctl = md_ioctl,
};
static inline void flush_curr_signals(void)
{
flush_signals(current);
}
int md_thread(void * arg)
{
mdk_thread_t *thread = arg;
......@@ -2489,7 +2774,7 @@ int md_thread(void * arg)
* Detach thread
*/
daemonize(thread->name);
daemonize(thread->name, mdidx(thread->mddev));
current->exit_signal = SIGCHLD;
allow_signal(SIGKILL);
......@@ -2510,7 +2795,7 @@ int md_thread(void * arg)
complete(thread->event);
while (thread->run) {
void (*run)(void *data);
void (*run)(mddev_t *);
wait_event_interruptible(thread->wqueue,
test_bit(THREAD_WAKEUP, &thread->flags));
......@@ -2521,11 +2806,11 @@ int md_thread(void * arg)
run = thread->run;
if (run) {
run(thread->data);
run(thread->mddev);
blk_run_queues();
}
if (signal_pending(current))
flush_curr_signals();
flush_signals(current);
}
complete(thread->event);
return 0;
......@@ -2538,8 +2823,8 @@ void md_wakeup_thread(mdk_thread_t *thread)
wake_up(&thread->wqueue);
}
mdk_thread_t *md_register_thread(void (*run) (void *),
void *data, const char *name)
mdk_thread_t *md_register_thread(void (*run) (mddev_t *), mddev_t *mddev,
const char *name)
{
mdk_thread_t *thread;
int ret;
......@@ -2556,7 +2841,7 @@ mdk_thread_t *md_register_thread(void (*run) (void *),
init_completion(&event);
thread->event = &event;
thread->run = run;
thread->data = data;
thread->mddev = mddev;
thread->name = name;
ret = kernel_thread(md_thread, thread, 0);
if (ret < 0) {
......@@ -2591,16 +2876,6 @@ void md_unregister_thread(mdk_thread_t *thread)
kfree(thread);
}
static void md_recover_arrays(void)
{
if (!md_recovery_thread) {
MD_BUG();
return;
}
md_wakeup_thread(md_recovery_thread);
}
void md_error(mddev_t *mddev, mdk_rdev_t *rdev)
{
dprintk("md_error dev:(%d:%d), rdev:(%d:%d), (caller: %p,%p,%p,%p).\n",
......@@ -2618,33 +2893,34 @@ void md_error(mddev_t *mddev, mdk_rdev_t *rdev)
if (!mddev->pers->error_handler)
return;
mddev->pers->error_handler(mddev,rdev);
md_recover_arrays();
set_bit(MD_RECOVERY_NEEDED, &mddev->recovery);
md_wakeup_thread(mddev->thread);
}
static int status_unused(char * page)
/* seq_file implementation /proc/mdstat */
static void status_unused(struct seq_file *seq)
{
int sz = 0, i = 0;
int i = 0;
mdk_rdev_t *rdev;
struct list_head *tmp;
sz += sprintf(page + sz, "unused devices: ");
seq_printf(seq, "unused devices: ");
ITERATE_RDEV_PENDING(rdev,tmp) {
i++;
sz += sprintf(page + sz, "%s ",
seq_printf(seq, "%s ",
bdev_partition_name(rdev->bdev));
}
if (!i)
sz += sprintf(page + sz, "<none>");
seq_printf(seq, "<none>");
sz += sprintf(page + sz, "\n");
return sz;
seq_printf(seq, "\n");
}
static int status_resync(char * page, mddev_t * mddev)
static void status_resync(struct seq_file *seq, mddev_t * mddev)
{
int sz = 0;
unsigned long max_blocks, resync, res, dt, db, rt;
resync = (mddev->curr_resync - atomic_read(&mddev->recovery_active))/2;
......@@ -2655,21 +2931,22 @@ static int status_resync(char * page, mddev_t * mddev)
*/
if (!max_blocks) {
MD_BUG();
return 0;
return;
}
res = (resync/1024)*1000/(max_blocks/1024 + 1);
{
int i, x = res/50, y = 20-x;
sz += sprintf(page + sz, "[");
seq_printf(seq, "[");
for (i = 0; i < x; i++)
sz += sprintf(page + sz, "=");
sz += sprintf(page + sz, ">");
seq_printf(seq, "=");
seq_printf(seq, ">");
for (i = 0; i < y; i++)
sz += sprintf(page + sz, ".");
sz += sprintf(page + sz, "] ");
seq_printf(seq, ".");
seq_printf(seq, "] ");
}
sz += sprintf(page + sz, " %s =%3lu.%lu%% (%lu/%lu)",
(mddev->spares ? "recovery" : "resync"),
seq_printf(seq, " %s =%3lu.%lu%% (%lu/%lu)",
(test_bit(MD_RECOVERY_SYNC, &mddev->recovery) ?
"resync" : "recovery"),
res/10, res % 10, resync, max_blocks);
/*
......@@ -2686,44 +2963,110 @@ static int status_resync(char * page, mddev_t * mddev)
db = resync - (mddev->resync_mark_cnt/2);
rt = (dt * ((max_blocks-resync) / (db/100+1)))/100;
sz += sprintf(page + sz, " finish=%lu.%lumin", rt / 60, (rt % 60)/6);
seq_printf(seq, " finish=%lu.%lumin", rt / 60, (rt % 60)/6);
sz += sprintf(page + sz, " speed=%ldK/sec", db/dt);
seq_printf(seq, " speed=%ldK/sec", db/dt);
}
return sz;
static void *md_seq_start(struct seq_file *seq, loff_t *pos)
{
struct list_head *tmp;
loff_t l = *pos;
mddev_t *mddev;
if (l > 0x10000)
return NULL;
if (!l--)
/* header */
return (void*)1;
spin_lock(&all_mddevs_lock);
list_for_each(tmp,&all_mddevs)
if (!l--) {
mddev = list_entry(tmp, mddev_t, all_mddevs);
mddev_get(mddev);
spin_unlock(&all_mddevs_lock);
return mddev;
}
spin_unlock(&all_mddevs_lock);
return (void*)2;/* tail */
}
static void *md_seq_next(struct seq_file *seq, void *v, loff_t *pos)
{
struct list_head *tmp;
mddev_t *next_mddev, *mddev = v;
++*pos;
if (v == (void*)2)
return NULL;
spin_lock(&all_mddevs_lock);
if (v == (void*)1)
tmp = all_mddevs.next;
else
tmp = mddev->all_mddevs.next;
if (tmp != &all_mddevs)
next_mddev = mddev_get(list_entry(tmp,mddev_t,all_mddevs));
else {
next_mddev = (void*)2;
*pos = 0x10000;
}
spin_unlock(&all_mddevs_lock);
if (v != (void*)1)
mddev_put(mddev);
return next_mddev;
}
static void md_seq_stop(struct seq_file *seq, void *v)
{
mddev_t *mddev = v;
if (mddev && v != (void*)1 && v != (void*)2)
mddev_put(mddev);
}
static int md_status_read_proc(char *page, char **start, off_t off,
int count, int *eof, void *data)
static int md_seq_show(struct seq_file *seq, void *v)
{
int sz = 0, j;
mddev_t *mddev = v;
sector_t size;
struct list_head *tmp, *tmp2;
struct list_head *tmp2;
mdk_rdev_t *rdev;
mddev_t *mddev;
int i;
sz += sprintf(page + sz, "Personalities : ");
for (j = 0; j < MAX_PERSONALITY; j++)
if (pers[j])
sz += sprintf(page+sz, "[%s] ", pers[j]->name);
if (v == (void*)1) {
seq_printf(seq, "Personalities : ");
for (i = 0; i < MAX_PERSONALITY; i++)
if (pers[i])
seq_printf(seq, "[%s] ", pers[i]->name);
sz += sprintf(page+sz, "\n");
seq_printf(seq, "\n");
return 0;
}
if (v == (void*)2) {
status_unused(seq);
return 0;
}
ITERATE_MDDEV(mddev,tmp) if (mddev_lock(mddev)==0) {
sz += sprintf(page + sz, "md%d : %sactive", mdidx(mddev),
if (mddev_lock(mddev)!=0)
return -EINTR;
if (mddev->pers || mddev->raid_disks || !list_empty(&mddev->disks)) {
seq_printf(seq, "md%d : %sactive", mdidx(mddev),
mddev->pers ? "" : "in");
if (mddev->pers) {
if (mddev->ro)
sz += sprintf(page + sz, " (read-only)");
sz += sprintf(page + sz, " %s", mddev->pers->name);
seq_printf(seq, " (read-only)");
seq_printf(seq, " %s", mddev->pers->name);
}
size = 0;
ITERATE_RDEV(mddev,rdev,tmp2) {
sz += sprintf(page + sz, " %s[%d]",
seq_printf(seq, " %s[%d]",
bdev_partition_name(rdev->bdev), rdev->desc_nr);
if (rdev->faulty) {
sz += sprintf(page + sz, "(F)");
seq_printf(seq, "(F)");
continue;
}
size += rdev->size;
......@@ -2731,34 +3074,50 @@ static int md_status_read_proc(char *page, char **start, off_t off,
if (!list_empty(&mddev->disks)) {
if (mddev->pers)
sz += sprintf(page + sz, "\n %llu blocks",
seq_printf(seq, "\n %llu blocks",
(unsigned long long)md_size[mdidx(mddev)]);
else
sz += sprintf(page + sz, "\n %llu blocks", (unsigned long long)size);
seq_printf(seq, "\n %llu blocks", (unsigned long long)size);
}
if (!mddev->pers) {
sz += sprintf(page+sz, "\n");
mddev_unlock(mddev);
continue;
if (mddev->pers) {
mddev->pers->status (seq, mddev);
seq_printf(seq, "\n ");
if (mddev->curr_resync > 2)
status_resync (seq, mddev);
else if (mddev->curr_resync == 1 || mddev->curr_resync == 2)
seq_printf(seq, " resync=DELAYED");
}
sz += mddev->pers->status (page+sz, mddev);
seq_printf(seq, "\n");
}
mddev_unlock(mddev);
return 0;
}
sz += sprintf(page+sz, "\n ");
if (mddev->curr_resync > 2)
sz += status_resync (page+sz, mddev);
else if (mddev->curr_resync == 1 || mddev->curr_resync == 2)
sz += sprintf(page + sz, " resync=DELAYED");
static struct seq_operations md_seq_ops = {
.start = md_seq_start,
.next = md_seq_next,
.stop = md_seq_stop,
.show = md_seq_show,
};
sz += sprintf(page + sz, "\n");
mddev_unlock(mddev);
}
sz += status_unused(page + sz);
static int md_seq_open(struct inode *inode, struct file *file)
{
int error;
return sz;
error = seq_open(file, &md_seq_ops);
return error;
}
static struct file_operations md_seq_fops = {
.open = md_seq_open,
.read = seq_read,
.llseek = seq_lseek,
.release = seq_release,
};
int register_md_personality(int pnum, mdk_personality_t *p)
{
if (pnum >= MAX_PERSONALITY) {
......@@ -2820,9 +3179,8 @@ void md_done_sync(mddev_t *mddev, int blocks, int ok)
atomic_sub(blocks, &mddev->recovery_active);
wake_up(&mddev->recovery_wait);
if (!ok) {
mddev->recovery_error = -EIO;
mddev->recovery_running = -1;
md_recover_arrays();
set_bit(MD_RECOVERY_ERR, &mddev->recovery);
md_wakeup_thread(mddev->thread);
// stop recovery, signal do_sync ....
}
}
......@@ -2830,40 +3188,49 @@ void md_done_sync(mddev_t *mddev, int blocks, int ok)
void md_write_start(mddev_t *mddev)
{
if (mddev->safemode && !atomic_read(&mddev->writes_pending)) {
if (!atomic_read(&mddev->writes_pending)) {
mddev_lock_uninterruptible(mddev);
atomic_inc(&mddev->writes_pending);
if (mddev->in_sync) {
mddev->in_sync = 0;
del_timer(&mddev->safemode_timer);
md_update_sb(mddev);
}
atomic_inc(&mddev->writes_pending);
mddev_unlock(mddev);
} else
atomic_inc(&mddev->writes_pending);
}
void md_write_end(mddev_t *mddev, mdk_thread_t *thread)
void md_write_end(mddev_t *mddev)
{
if (atomic_dec_and_test(&mddev->writes_pending) && mddev->safemode)
md_wakeup_thread(thread);
if (atomic_dec_and_test(&mddev->writes_pending)) {
if (mddev->safemode == 2)
md_wakeup_thread(mddev->thread);
else
mod_timer(&mddev->safemode_timer, jiffies + mddev->safemode_delay);
}
}
static inline void md_enter_safemode(mddev_t *mddev)
{
mddev_lock_uninterruptible(mddev);
if (mddev->safemode && !atomic_read(&mddev->writes_pending) && !mddev->in_sync && !mddev->recovery_running) {
if (mddev->safemode && !atomic_read(&mddev->writes_pending) &&
!mddev->in_sync && mddev->recovery_cp == MaxSector) {
mddev->in_sync = 1;
md_update_sb(mddev);
}
mddev_unlock(mddev);
if (mddev->safemode == 1)
mddev->safemode = 0;
}
void md_handle_safemode(mddev_t *mddev)
{
if (signal_pending(current)) {
printk(KERN_INFO "md: md%d in safe mode\n",mdidx(mddev));
mddev->safemode= 1;
flush_curr_signals();
printk(KERN_INFO "md: md%d in immediate safe mode\n",mdidx(mddev));
mddev->safemode = 2;
flush_signals(current);
}
if (mddev->safemode)
md_enter_safemode(mddev);
......@@ -2874,9 +3241,8 @@ DECLARE_WAIT_QUEUE_HEAD(resync_wait);
#define SYNC_MARKS 10
#define SYNC_MARK_STEP (3*HZ)
static void md_do_sync(void *data)
static void md_do_sync(mddev_t *mddev)
{
mddev_t *mddev = data;
mddev_t *mddev2;
unsigned int max_sectors, currspeed = 0,
j, window, err;
......@@ -2887,7 +3253,7 @@ static void md_do_sync(void *data)
unsigned long last_check;
/* just incase thread restarts... */
if (mddev->recovery_running <= 0)
if (test_bit(MD_RECOVERY_DONE, &mddev->recovery))
return;
/* we overload curr_resync somewhat here.
......@@ -2914,14 +3280,16 @@ static void md_do_sync(void *data)
}
if (wait_event_interruptible(resync_wait,
mddev2->curr_resync < mddev->curr_resync)) {
flush_curr_signals();
flush_signals(current);
err = -EINTR;
mddev_put(mddev2);
goto skip;
}
}
if (mddev->curr_resync == 1)
if (mddev->curr_resync == 1) {
mddev_put(mddev2);
break;
}
}
} while (mddev->curr_resync < 2);
......@@ -2934,9 +3302,13 @@ static void md_do_sync(void *data)
sysctl_speed_limit_max);
is_mddev_idle(mddev); /* this also initializes IO event counters */
if (test_bit(MD_RECOVERY_SYNC, &mddev->recovery))
j = mddev->recovery_cp;
else
j = 0;
for (m = 0; m < SYNC_MARKS; m++) {
mark[m] = jiffies;
mark_cnt[m] = mddev->recovery_cp;
mark_cnt[m] = j;
}
last_mark = 0;
mddev->resync_mark = mark[last_mark];
......@@ -2953,12 +3325,10 @@ static void md_do_sync(void *data)
init_waitqueue_head(&mddev->recovery_wait);
last_check = 0;
mddev->recovery_error = 0;
if (mddev->recovery_cp)
if (j)
printk(KERN_INFO "md: resuming recovery of md%d from checkpoint.\n", mdidx(mddev));
for (j = mddev->recovery_cp; j < max_sectors;) {
while (j < max_sectors) {
int sectors;
sectors = mddev->pers->sync_request(mddev, j, currspeed < sysctl_speed_limit_min);
......@@ -2975,6 +3345,10 @@ static void md_do_sync(void *data)
last_check = j;
if (test_bit(MD_RECOVERY_INTR, &mddev->recovery) ||
test_bit(MD_RECOVERY_ERR, &mddev->recovery))
break;
blk_run_queues();
repeat:
......@@ -2995,7 +3369,7 @@ static void md_do_sync(void *data)
* got a signal, exit.
*/
printk(KERN_INFO "md: md_do_sync() got signal ... exiting\n");
flush_curr_signals();
flush_signals(current);
err = -EINTR;
goto out;
}
......@@ -3029,39 +3403,42 @@ static void md_do_sync(void *data)
out:
wait_event(mddev->recovery_wait, !atomic_read(&mddev->recovery_active));
if (mddev->recovery_running < 0 &&
!mddev->recovery_error && mddev->curr_resync > 2)
{
/* interrupted but no write errors */
printk(KERN_INFO "md: checkpointing recovery of md%d.\n", mdidx(mddev));
mddev->recovery_cp = mddev->curr_resync;
}
/* tell personality that we are finished */
mddev->pers->sync_request(mddev, max_sectors, 1);
skip:
mddev->curr_resync = 0;
if (err)
mddev->recovery_running = -1;
if (mddev->recovery_running > 0)
mddev->recovery_running = 0;
if (mddev->recovery_running == 0)
mddev->recovery_cp = MaxSector;
set_bit(MD_RECOVERY_ERR, &mddev->recovery);
if (!test_bit(MD_RECOVERY_ERR, &mddev->recovery) &&
mddev->curr_resync > 2 &&
mddev->curr_resync > mddev->recovery_cp) {
if (test_bit(MD_RECOVERY_INTR, &mddev->recovery)) {
printk(KERN_INFO "md: checkpointing recovery of md%d.\n", mdidx(mddev));
mddev->recovery_cp = mddev->curr_resync;
} else
mddev->recovery_cp = MaxSector;
}
if (mddev->safemode)
md_enter_safemode(mddev);
md_recover_arrays();
skip:
mddev->curr_resync = 0;
set_bit(MD_RECOVERY_DONE, &mddev->recovery);
md_wakeup_thread(mddev->thread);
}
/*
* This is the kernel thread that watches all md arrays for re-sync and other
* action that might be needed.
* This routine is regularly called by all per-raid-array threads to
* deal with generic issues like resync and super-block update.
* Raid personalities that don't have a thread (linear/raid0) do not
* need this as they never do any recovery or update the superblock.
*
* It does not do any resync itself, but rather "forks" off other threads
* to do that as needed.
* When it is determined that resync is needed, we set "->recovery_running" and
* create a thread at ->sync_thread.
* When the thread finishes it clears recovery_running (or sets an error)
* and wakeup up this thread which will reap the thread and finish up.
* When it is determined that resync is needed, we set MD_RECOVERY_RUNNING in
* "->recovery" and create a thread at ->sync_thread.
* When the thread finishes it sets MD_RECOVERY_DONE (and might set MD_RECOVERY_ERR)
* and wakeups up this thread which will reap the thread and finish up.
* This thread also removes any faulty devices (with nr_pending == 0).
*
* The overall approach is:
......@@ -3072,41 +3449,47 @@ static void md_do_sync(void *data)
* 5/ If array is degraded, try to add spares devices
* 6/ If array has spares or is not in-sync, start a resync thread.
*/
void md_do_recovery(void *data)
void md_check_recovery(mddev_t *mddev)
{
mddev_t *mddev;
mdk_rdev_t *rdev;
struct list_head *tmp, *rtmp;
struct list_head *rtmp;
dprintk(KERN_INFO "md: recovery thread got woken up ...\n");
ITERATE_MDDEV(mddev,tmp) if (mddev_lock(mddev)==0) {
if (!mddev->raid_disks || !mddev->pers || mddev->ro)
goto unlock;
if (mddev->ro)
return;
if ( ! (
mddev->sb_dirty ||
test_bit(MD_RECOVERY_NEEDED, &mddev->recovery) ||
test_bit(MD_RECOVERY_DONE, &mddev->recovery)
))
return;
if (mddev_trylock(mddev)==0) {
int spares =0;
if (mddev->sb_dirty)
md_update_sb(mddev);
if (mddev->recovery_running > 0)
if (test_bit(MD_RECOVERY_RUNNING, &mddev->recovery) &&
!test_bit(MD_RECOVERY_DONE, &mddev->recovery))
/* resync/recovery still happening */
goto unlock;
if (mddev->sync_thread) {
/* resync has finished, collect result */
md_unregister_thread(mddev->sync_thread);
mddev->sync_thread = NULL;
if (mddev->recovery_running == 0) {
if (!test_bit(MD_RECOVERY_ERR, &mddev->recovery)) {
/* success...*/
/* activate any spares */
mddev->pers->spare_active(mddev);
mddev->spares = 0;
}
md_update_sb(mddev);
mddev->recovery_running = 0;
mddev->recovery = 0;
wake_up(&resync_wait);
goto unlock;
}
if (mddev->recovery_running) {
if (mddev->recovery) {
/* that's odd.. */
mddev->recovery_running = 0;
mddev->recovery = 0;
wake_up(&resync_wait);
}
......@@ -3114,7 +3497,6 @@ void md_do_recovery(void *data)
* remove any failed drives, then
* add spares if possible
*/
mddev->spares = 0;
ITERATE_RDEV(mddev,rdev,rtmp) {
if (rdev->raid_disk >= 0 &&
rdev->faulty &&
......@@ -3123,43 +3505,41 @@ void md_do_recovery(void *data)
rdev->raid_disk = -1;
}
if (!rdev->faulty && rdev->raid_disk >= 0 && !rdev->in_sync)
mddev->spares++;
spares++;
}
if (mddev->degraded) {
ITERATE_RDEV(mddev,rdev,rtmp)
if (rdev->raid_disk < 0
&& !rdev->faulty) {
if (mddev->pers->hot_add_disk(mddev,rdev)) {
mddev->spares++;
mddev->recovery_cp = 0;
}
if (mddev->pers->hot_add_disk(mddev,rdev))
spares++;
else
break;
}
}
if (!mddev->spares && (mddev->recovery_cp == MaxSector )) {
if (!spares && (mddev->recovery_cp == MaxSector )) {
/* nothing we can do ... */
goto unlock;
}
if (mddev->pers->sync_request) {
set_bit(MD_RECOVERY_RUNNING, &mddev->recovery);
if (!spares)
set_bit(MD_RECOVERY_SYNC, &mddev->recovery);
mddev->sync_thread = md_register_thread(md_do_sync,
mddev,
"md_resync");
"md%d_resync");
if (!mddev->sync_thread) {
printk(KERN_ERR "md%d: could not start resync thread...\n", mdidx(mddev));
/* leave the spares where they are, it shouldn't hurt */
mddev->recovery_running = 0;
mddev->recovery = 0;
} else {
mddev->recovery_running = 1;
md_wakeup_thread(mddev->sync_thread);
}
}
unlock:
mddev_unlock(mddev);
}
dprintk(KERN_INFO "md: recovery thread finished ...\n");
}
int md_notify_reboot(struct notifier_block *this,
......@@ -3194,6 +3574,7 @@ struct notifier_block md_notifier = {
static void md_geninit(void)
{
struct proc_dir_entry *p;
int i;
for(i = 0; i < MAX_MD_DEVS; i++) {
......@@ -3203,13 +3584,14 @@ static void md_geninit(void)
dprintk("md: sizeof(mdp_super_t) = %d\n", (int)sizeof(mdp_super_t));
#ifdef CONFIG_PROC_FS
create_proc_read_entry("mdstat", 0, NULL, md_status_read_proc, NULL);
p = create_proc_entry("mdstat", S_IRUGO, NULL);
if (p)
p->proc_fops = &md_seq_fops;
#endif
}
int __init md_init(void)
{
static char * name = "mdrecoveryd";
int minor;
printk(KERN_INFO "md: md driver %d.%d.%d MAX_MD_DEVS=%d, MD_SB_DISKS=%d\n",
......@@ -3229,11 +3611,6 @@ int __init md_init(void)
S_IFBLK | S_IRUSR | S_IWUSR, &md_fops, NULL);
}
md_recovery_thread = md_register_thread(md_do_recovery, NULL, name);
if (!md_recovery_thread)
printk(KERN_ALERT
"md: bug: couldn't allocate md_recovery_thread\n");
register_reboot_notifier(&md_notifier);
raid_table_header = register_sysctl_table(raid_root_table, 1);
......@@ -3268,7 +3645,7 @@ static void autostart_arrays(void)
for (i = 0; i < dev_cnt; i++) {
dev_t dev = detected_devices[i];
rdev = md_import_device(dev,1);
rdev = md_import_device(dev,0, 0);
if (IS_ERR(rdev)) {
printk(KERN_ALERT "md: could not import %s!\n",
partition_name(dev));
......@@ -3291,7 +3668,6 @@ static __exit void md_exit(void)
{
int i;
blk_unregister_region(MKDEV(MAJOR_NR,0), MAX_MD_DEVS);
md_unregister_thread(md_recovery_thread);
for (i=0; i < MAX_MD_DEVS; i++)
devfs_remove("md/%d", i);
devfs_remove("md");
......@@ -3331,4 +3707,5 @@ EXPORT_SYMBOL(md_unregister_thread);
EXPORT_SYMBOL(md_wakeup_thread);
EXPORT_SYMBOL(md_print_devices);
EXPORT_SYMBOL(md_interrupt_thread);
EXPORT_SYMBOL(md_check_recovery);
MODULE_LICENSE("GPL");
drivers/md/multipath.c
View file @ 65511c2b
......@@ -86,7 +86,6 @@ static void multipath_reschedule_retry (struct multipath_bh *mp_bh)
{
unsigned long flags;
mddev_t *mddev = mp_bh->mddev;
multipath_conf_t *conf = mddev_to_conf(mddev);
spin_lock_irqsave(&retry_list_lock, flags);
if (multipath_retry_list == NULL)
......@@ -95,7 +94,7 @@ static void multipath_reschedule_retry (struct multipath_bh *mp_bh)
multipath_retry_tail = &mp_bh->next_mp;
mp_bh->next_mp = NULL;
spin_unlock_irqrestore(&retry_list_lock, flags);
md_wakeup_thread(conf->thread);
md_wakeup_thread(mddev->thread);
}
......@@ -185,19 +184,18 @@ static int multipath_make_request (request_queue_t *q, struct bio * bio)
return 0;
}
static int multipath_status (char *page, mddev_t *mddev)
static void multipath_status (struct seq_file *seq, mddev_t *mddev)
{
multipath_conf_t *conf = mddev_to_conf(mddev);
int sz = 0, i;
int i;
sz += sprintf (page+sz, " [%d/%d] [", conf->raid_disks,
seq_printf (seq, " [%d/%d] [", conf->raid_disks,
conf->working_disks);
for (i = 0; i < conf->raid_disks; i++)
sz += sprintf (page+sz, "%s",
seq_printf (seq, "%s",
conf->multipaths[i].rdev &&
conf->multipaths[i].rdev->in_sync ? "U" : "_");
sz += sprintf (page+sz, "]");
return sz;
seq_printf (seq, "]");
}
#define LAST_DISK KERN_ALERT \
......@@ -334,14 +332,14 @@ static int multipath_remove_disk(mddev_t *mddev, int number)
* 3. Performs writes following reads for array syncronising.
*/
static void multipathd (void *data)
static void multipathd (mddev_t *mddev)
{
struct multipath_bh *mp_bh;
struct bio *bio;
unsigned long flags;
mddev_t *mddev;
mdk_rdev_t *rdev;
md_check_recovery(mddev);
for (;;) {
spin_lock_irqsave(&retry_list_lock, flags);
mp_bh = multipath_retry_list;
......@@ -471,10 +469,10 @@ static int multipath_run (mddev_t *mddev)
}
{
const char * name = "multipathd";
const char * name = "md%d_multipath";
conf->thread = md_register_thread(multipathd, conf, name);
if (!conf->thread) {
mddev->thread = md_register_thread(multipathd, mddev, name);
if (!mddev->thread) {
printk(THREAD_ERROR, mdidx(mddev));
goto out_free_conf;
}
......@@ -513,7 +511,7 @@ static int multipath_stop (mddev_t *mddev)
{
multipath_conf_t *conf = mddev_to_conf(mddev);
md_unregister_thread(conf->thread);
md_unregister_thread(mddev->thread);
mempool_destroy(conf->pool);
kfree(conf);
mddev->private = NULL;
......
drivers/md/raid0.c
View file @ 65511c2b
......@@ -349,7 +349,7 @@ static int raid0_make_request (request_queue_t *q, struct bio *bio)
* is the only IO operation happening on this bh.
*/
bio->bi_bdev = tmp_dev->bdev;
bio->bi_sector = rsect;
bio->bi_sector = rsect + tmp_dev->data_offset;
/*
* Let the main block layer submit the IO and resolve recursion:
......@@ -372,41 +372,40 @@ static int raid0_make_request (request_queue_t *q, struct bio *bio)
return 0;
}
static int raid0_status (char *page, mddev_t *mddev)
static void raid0_status (struct seq_file *seq, mddev_t *mddev)
{
int sz = 0;
#undef MD_DEBUG
#ifdef MD_DEBUG
int j, k;
raid0_conf_t *conf = mddev_to_conf(mddev);
sz += sprintf(page + sz, " ");
seq_printf(seq, " ");
for (j = 0; j < conf->nr_zones; j++) {
sz += sprintf(page + sz, "[z%d",
seq_printf(seq, "[z%d",
conf->hash_table[j].zone0 - conf->strip_zone);
if (conf->hash_table[j].zone1)
sz += sprintf(page+sz, "/z%d] ",
seq_printf(seq, "/z%d] ",
conf->hash_table[j].zone1 - conf->strip_zone);
else
sz += sprintf(page+sz, "] ");
seq_printf(seq, "] ");
}
sz += sprintf(page + sz, "\n");
seq_printf(seq, "\n");
for (j = 0; j < conf->nr_strip_zones; j++) {
sz += sprintf(page + sz, " z%d=[", j);
seq_printf(seq, " z%d=[", j);
for (k = 0; k < conf->strip_zone[j].nb_dev; k++)
sz += sprintf (page+sz, "%s/", bdev_partition_name(
seq_printf (seq, "%s/", bdev_partition_name(
conf->strip_zone[j].dev[k]->bdev));
sz--;
sz += sprintf (page+sz, "] zo=%d do=%d s=%d\n",
seq_printf (seq, "] zo=%d do=%d s=%d\n",
conf->strip_zone[j].zone_offset,
conf->strip_zone[j].dev_offset,
conf->strip_zone[j].size);
}
#endif
sz += sprintf(page + sz, " %dk chunks", mddev->chunk_size/1024);
return sz;
seq_printf(seq, " %dk chunks", mddev->chunk_size/1024);
return;
}
static mdk_personality_t raid0_personality=
......
drivers/md/raid1.c
View file @ 65511c2b
......@@ -225,13 +225,12 @@ static void reschedule_retry(r1bio_t *r1_bio)
{
unsigned long flags;
mddev_t *mddev = r1_bio->mddev;
conf_t *conf = mddev_to_conf(mddev);
spin_lock_irqsave(&retry_list_lock, flags);
list_add(&r1_bio->retry_list, &retry_list_head);
spin_unlock_irqrestore(&retry_list_lock, flags);
md_wakeup_thread(conf->thread);
md_wakeup_thread(mddev->thread);
}
/*
......@@ -320,7 +319,7 @@ static int end_request(struct bio *bio, unsigned int bytes_done, int error)
* already.
*/
if (atomic_dec_and_test(&r1_bio->remaining)) {
md_write_end(r1_bio->mddev,conf->thread);
md_write_end(r1_bio->mddev);
raid_end_bio_io(r1_bio, uptodate);
}
}
......@@ -494,7 +493,7 @@ static int make_request(request_queue_t *q, struct bio * bio)
BUG();
r1_bio->read_bio = read_bio;
read_bio->bi_sector = r1_bio->sector;
read_bio->bi_sector = r1_bio->sector + mirror->rdev->data_offset;
read_bio->bi_bdev = mirror->rdev->bdev;
read_bio->bi_end_io = end_request;
read_bio->bi_rw = r1_bio->cmd;
......@@ -529,7 +528,7 @@ static int make_request(request_queue_t *q, struct bio * bio)
mbio = bio_clone(bio, GFP_NOIO);
r1_bio->write_bios[i] = mbio;
mbio->bi_sector = r1_bio->sector;
mbio->bi_sector = r1_bio->sector + conf->mirrors[i].rdev->data_offset;
mbio->bi_bdev = conf->mirrors[i].rdev->bdev;
mbio->bi_end_io = end_request;
mbio->bi_rw = r1_bio->cmd;
......@@ -542,7 +541,7 @@ static int make_request(request_queue_t *q, struct bio * bio)
* If all mirrors are non-operational
* then return an IO error:
*/
md_write_end(mddev,conf->thread);
md_write_end(mddev);
raid_end_bio_io(r1_bio, 0);
return 0;
}
......@@ -571,19 +570,18 @@ static int make_request(request_queue_t *q, struct bio * bio)
return 0;
}
static int status(char *page, mddev_t *mddev)
static void status(struct seq_file *seq, mddev_t *mddev)
{
conf_t *conf = mddev_to_conf(mddev);
int sz = 0, i;
int i;
sz += sprintf(page+sz, " [%d/%d] [", conf->raid_disks,
seq_printf(seq, " [%d/%d] [", conf->raid_disks,
conf->working_disks);
for (i = 0; i < conf->raid_disks; i++)
sz += sprintf(page+sz, "%s",
seq_printf(seq, "%s",
conf->mirrors[i].rdev &&
conf->mirrors[i].rdev->in_sync ? "U" : "_");
sz += sprintf (page+sz, "]");
return sz;
seq_printf(seq, "]");
}
#define LAST_DISK KERN_ALERT \
......@@ -624,10 +622,9 @@ static void error(mddev_t *mddev, mdk_rdev_t *rdev)
mddev->degraded++;
conf->working_disks--;
/*
* if recovery was running, stop it now.
* if recovery is running, make sure it aborts.
*/
if (mddev->recovery_running)
mddev->recovery_running = -EIO;
set_bit(MD_RECOVERY_ERR, &mddev->recovery);
}
rdev->in_sync = 0;
rdev->faulty = 1;
......@@ -859,7 +856,7 @@ static void sync_request_write(mddev_t *mddev, r1bio_t *r1_bio)
mbio = bio_clone(bio, GFP_NOIO);
r1_bio->write_bios[i] = mbio;
mbio->bi_bdev = conf->mirrors[i].rdev->bdev;
mbio->bi_sector = r1_bio->sector;
mbio->bi_sector = r1_bio->sector | conf->mirrors[i].rdev->data_offset;
mbio->bi_end_io = end_sync_write;
mbio->bi_rw = WRITE;
mbio->bi_private = r1_bio;
......@@ -900,17 +897,17 @@ static void sync_request_write(mddev_t *mddev, r1bio_t *r1_bio)
* 3. Performs writes following reads for array syncronising.
*/
static void raid1d(void *data)
static void raid1d(mddev_t *mddev)
{
struct list_head *head = &retry_list_head;
r1bio_t *r1_bio;
struct bio *bio;
unsigned long flags;
mddev_t *mddev;
conf_t *conf = data;
conf_t *conf = mddev_to_conf(mddev);
mdk_rdev_t *rdev;
md_handle_safemode(conf->mddev);
md_check_recovery(mddev);
md_handle_safemode(mddev);
for (;;) {
spin_lock_irqsave(&retry_list_lock, flags);
......@@ -937,7 +934,7 @@ static void raid1d(void *data)
printk(REDIRECT_SECTOR,
bdev_partition_name(rdev->bdev), (unsigned long long)r1_bio->sector);
bio->bi_bdev = rdev->bdev;
bio->bi_sector = r1_bio->sector;
bio->bi_sector = r1_bio->sector + rdev->data_offset;
bio->bi_rw = r1_bio->cmd;
generic_make_request(bio);
......@@ -1048,7 +1045,7 @@ static int sync_request(mddev_t *mddev, sector_t sector_nr, int go_faster)
read_bio = bio_clone(r1_bio->master_bio, GFP_NOIO);
read_bio->bi_sector = sector_nr;
read_bio->bi_sector = sector_nr + mirror->rdev->data_offset;
read_bio->bi_bdev = mirror->rdev->bdev;
read_bio->bi_end_io = end_sync_read;
read_bio->bi_rw = READ;
......@@ -1190,10 +1187,8 @@ static int run(mddev_t *mddev)
{
snprintf(conf->thread_name,MD_THREAD_NAME_MAX,"raid1d_md%d",mdidx(mddev));
conf->thread = md_register_thread(raid1d, conf, conf->thread_name);
if (!conf->thread) {
mddev->thread = md_register_thread(raid1d, mddev, "md%d_raid1");
if (!mddev->thread) {
printk(THREAD_ERROR, mdidx(mddev));
goto out_free_conf;
}
......@@ -1219,7 +1214,8 @@ static int stop(mddev_t *mddev)
{
conf_t *conf = mddev_to_conf(mddev);
md_unregister_thread(conf->thread);
md_unregister_thread(mddev->thread);
mddev->thread = NULL;
if (conf->r1bio_pool)
mempool_destroy(conf->r1bio_pool);
kfree(conf);
......
drivers/md/raid5.c
View file @ 65511c2b
......@@ -71,12 +71,12 @@ static inline void __release_stripe(raid5_conf_t *conf, struct stripe_head *sh)
list_add_tail(&sh->lru, &conf->delayed_list);
else
list_add_tail(&sh->lru, &conf->handle_list);
md_wakeup_thread(conf->thread);
md_wakeup_thread(conf->mddev->thread);
} else {
if (test_and_clear_bit(STRIPE_PREREAD_ACTIVE, &sh->state)) {
atomic_dec(&conf->preread_active_stripes);
if (atomic_read(&conf->preread_active_stripes) < IO_THRESHOLD)
md_wakeup_thread(conf->thread);
md_wakeup_thread(conf->mddev->thread);
}
list_add_tail(&sh->lru, &conf->inactive_list);
atomic_dec(&conf->active_stripes);
......@@ -463,10 +463,9 @@ static void error(mddev_t *mddev, mdk_rdev_t *rdev)
conf->failed_disks++;
rdev->in_sync = 0;
/*
* if recovery was running, stop it now.
* if recovery was running, make sure it aborts.
*/
if (mddev->recovery_running)
mddev->recovery_running = -EIO;
set_bit(MD_RECOVERY_ERR, &mddev->recovery);
}
rdev->faulty = 1;
printk (KERN_ALERT
......@@ -913,7 +912,7 @@ static void handle_stripe(struct stripe_head *sh)
struct bio *nextbi = bi->bi_next;
clear_bit(BIO_UPTODATE, &bi->bi_flags);
if (--bi->bi_phys_segments == 0) {
md_write_end(conf->mddev, conf->thread);
md_write_end(conf->mddev);
bi->bi_next = return_bi;
return_bi = bi;
}
......@@ -970,7 +969,7 @@ static void handle_stripe(struct stripe_head *sh)
while (wbi && wbi->bi_sector < dev->sector + STRIPE_SECTORS) {
wbi2 = wbi->bi_next;
if (--wbi->bi_phys_segments == 0) {
md_write_end(conf->mddev, conf->thread);
md_write_end(conf->mddev);
wbi->bi_next = return_bi;
return_bi = wbi;
}
......@@ -1113,7 +1112,7 @@ static void handle_stripe(struct stripe_head *sh)
if (test_and_clear_bit(STRIPE_PREREAD_ACTIVE, &sh->state)) {
atomic_dec(&conf->preread_active_stripes);
if (atomic_read(&conf->preread_active_stripes) < IO_THRESHOLD)
md_wakeup_thread(conf->thread);
md_wakeup_thread(conf->mddev->thread);
}
}
}
......@@ -1207,7 +1206,7 @@ static void handle_stripe(struct stripe_head *sh)
bi->bi_bdev = rdev->bdev;
PRINTK("for %llu schedule op %ld on disc %d\n", (unsigned long long)sh->sector, bi->bi_rw, i);
atomic_inc(&sh->count);
bi->bi_sector = sh->sector;
bi->bi_sector = sh->sector + rdev->data_offset;
bi->bi_flags = 1 << BIO_UPTODATE;
bi->bi_vcnt = 1;
bi->bi_idx = 0;
......@@ -1251,7 +1250,7 @@ static void raid5_unplug_device(void *data)
if (blk_remove_plug(q))
raid5_activate_delayed(conf);
md_wakeup_thread(conf->thread);
md_wakeup_thread(mddev->thread);
spin_unlock_irqrestore(&conf->device_lock, flags);
}
......@@ -1304,7 +1303,7 @@ static int make_request (request_queue_t *q, struct bio * bi)
int bytes = bi->bi_size;
if ( bio_data_dir(bi) == WRITE )
md_write_end(mddev,conf->thread);
md_write_end(mddev);
bi->bi_size = 0;
bi->bi_end_io(bi, bytes, 0);
}
......@@ -1356,16 +1355,17 @@ static int sync_request (mddev_t *mddev, sector_t sector_nr, int go_faster)
* During the scan, completed stripes are saved for us by the interrupt
* handler, so that they will not have to wait for our next wakeup.
*/
static void raid5d (void *data)
static void raid5d (mddev_t *mddev)
{
struct stripe_head *sh;
raid5_conf_t *conf = data;
mddev_t *mddev = conf->mddev;
raid5_conf_t *conf = mddev_to_conf(mddev);
int handled;
PRINTK("+++ raid5d active\n");
md_check_recovery(mddev);
md_handle_safemode(mddev);
handled = 0;
spin_lock_irq(&conf->device_lock);
while (1) {
......@@ -1486,10 +1486,8 @@ static int run (mddev_t *mddev)
}
{
snprintf(conf->thread_name,MD_THREAD_NAME_MAX,"raid5d_md%d",mdidx(mddev));
conf->thread = md_register_thread(raid5d, conf, conf->thread_name);
if (!conf->thread) {
mddev->thread = md_register_thread(raid5d, mddev, "md%d_raid5");
if (!mddev->thread) {
printk(KERN_ERR "raid5: couldn't allocate thread for md%d\n", mdidx(mddev));
goto abort;
}
......@@ -1500,7 +1498,7 @@ static int run (mddev_t *mddev)
if (grow_stripes(conf, conf->max_nr_stripes)) {
printk(KERN_ERR "raid5: couldn't allocate %dkB for buffers\n", memory);
shrink_stripes(conf);
md_unregister_thread(conf->thread);
md_unregister_thread(mddev->thread);
goto abort;
} else
printk(KERN_INFO "raid5: allocated %dkB for md%d\n", memory, mdidx(mddev));
......@@ -1536,7 +1534,8 @@ static int stop (mddev_t *mddev)
{
raid5_conf_t *conf = (raid5_conf_t *) mddev->private;
md_unregister_thread(conf->thread);
md_unregister_thread(mddev->thread);
mddev->thread = NULL;
shrink_stripes(conf);
free_pages((unsigned long) conf->stripe_hashtbl, HASH_PAGES_ORDER);
kfree(conf);
......@@ -1574,29 +1573,26 @@ static void printall (raid5_conf_t *conf)
}
}
spin_unlock_irq(&conf->device_lock);
PRINTK("--- raid5d inactive\n");
}
#endif
static int status (char *page, mddev_t *mddev)
static void status (struct seq_file *seq, mddev_t *mddev)
{
raid5_conf_t *conf = (raid5_conf_t *) mddev->private;
int sz = 0, i;
int i;
sz += sprintf (page+sz, " level %d, %dk chunk, algorithm %d", mddev->level, mddev->chunk_size >> 10, mddev->layout);
sz += sprintf (page+sz, " [%d/%d] [", conf->raid_disks, conf->working_disks);
seq_printf (seq, " level %d, %dk chunk, algorithm %d", mddev->level, mddev->chunk_size >> 10, mddev->layout);
seq_printf (seq, " [%d/%d] [", conf->raid_disks, conf->working_disks);
for (i = 0; i < conf->raid_disks; i++)
sz += sprintf (page+sz, "%s",
seq_printf (seq, "%s",
conf->disks[i].rdev &&
conf->disks[i].rdev->in_sync ? "U" : "_");
sz += sprintf (page+sz, "]");
seq_printf (seq, "]");
#if RAID5_DEBUG
#define D(x) \
sz += sprintf (page+sz, "<"#x":%d>", atomic_read(&conf->x))
seq_printf (seq, "<"#x":%d>", atomic_read(&conf->x))
printall(conf);
#endif
return sz;
}
static void print_raid5_conf (raid5_conf_t *conf)
......
fs/lockd/svclock.c
View file @ 65511c2b
......@@ -305,8 +305,6 @@ nlmsvc_lock(struct svc_rqst *rqstp, struct nlm_file *file,
(long long)lock->fl.fl_end,
wait);
/* Lock file against concurrent access */
down(&file->f_sema);
/* Get existing block (in case client is busy-waiting) */
block = nlmsvc_lookup_block(file, lock, 0);
......@@ -314,6 +312,9 @@ nlmsvc_lock(struct svc_rqst *rqstp, struct nlm_file *file,
lock->fl.fl_flags |= FL_LOCKD;
again:
/* Lock file against concurrent access */
down(&file->f_sema);
if (!(conflock = posix_test_lock(&file->f_file, &lock->fl))) {
error = posix_lock_file(&file->f_file, &lock->fl);
......@@ -346,7 +347,10 @@ nlmsvc_lock(struct svc_rqst *rqstp, struct nlm_file *file,
/* If we don't have a block, create and initialize it. Then
* retry because we may have slept in kmalloc. */
/* We have to release f_sema as nlmsvc_create_block may try to
* to claim it while doing host garbage collection */
if (block == NULL) {
up(&file->f_sema);
dprintk("lockd: blocking on this lock (allocating).\n");
if (!(block = nlmsvc_create_block(rqstp, file, lock, cookie)))
return nlm_lck_denied_nolocks;
......
fs/nfsd/export.c
View file @ 65511c2b
......@@ -294,7 +294,9 @@ int svc_export_parse(struct cache_detail *cd, char *mesg, int mlen)
/* client */
len = qword_get(&mesg, buf, PAGE_SIZE);
if (len <= 0) return -EINVAL;
err = -EINVAL;
if (len <= 0) goto out;
err = -ENOENT;
dom = auth_domain_find(buf);
if (!dom)
......@@ -473,8 +475,14 @@ exp_get_by_name(svc_client *clp, struct vfsmount *mnt, struct dentry *dentry,
exp = svc_export_lookup(&key, 0);
if (exp != NULL)
if (cache_check(&svc_export_cache, &exp->h, reqp))
switch (cache_check(&svc_export_cache, &exp->h, reqp)) {
case 0: break;
case -EAGAIN:
exp = ERR_PTR(-EAGAIN);
break;
default:
exp = NULL;
}
return exp;
}
......@@ -915,7 +923,8 @@ struct flags {
{ NFSEXP_UIDMAP, {"uidmap", ""}},
{ NFSEXP_KERBEROS, { "kerberos", ""}},
{ NFSEXP_SUNSECURE, { "sunsecure", ""}},
{ NFSEXP_CROSSMNT, {"nohide", ""}},
{ NFSEXP_NOHIDE, {"nohide", ""}},
{ NFSEXP_CROSSMNT, {"crossmnt", ""}},
{ NFSEXP_NOSUBTREECHECK, {"no_subtree_check", ""}},
{ NFSEXP_NOAUTHNLM, {"insecure_locks", ""}},
#ifdef MSNFS
......
fs/nfsd/vfs.c
View file @ 65511c2b
......@@ -79,7 +79,7 @@ static struct raparms * raparm_cache;
* N.B. After this call _both_ fhp and resfh need an fh_put
*
* If the lookup would cross a mountpoint, and the mounted filesystem
* is exported to the client with NFSEXP_CROSSMNT, then the lookup is
* is exported to the client with NFSEXP_NOHIDE, then the lookup is
* accepted as it stands and the mounted directory is
* returned. Otherwise the covered directory is returned.
* NOTE: this mountpoint crossing is not supported properly by all
......@@ -115,7 +115,7 @@ nfsd_lookup(struct svc_rqst *rqstp, struct svc_fh *fhp, const char *name,
read_lock(&dparent_lock);
dentry = dget(dparent->d_parent);
read_unlock(&dparent_lock);
} else if (!EX_CROSSMNT(exp))
} else if (!EX_NOHIDE(exp))
dentry = dget(dparent); /* .. == . just like at / */
else {
/* checking mountpoint crossing is very different when stepping up */
......@@ -133,6 +133,12 @@ nfsd_lookup(struct svc_rqst *rqstp, struct svc_fh *fhp, const char *name,
exp2 = exp_parent(exp->ex_client, mnt, dentry,
&rqstp->rq_chandle);
if (IS_ERR(exp2)) {
err = PTR_ERR(exp2);
dput(dentry);
mntput(mnt);
goto out;
}
if (!exp2) {
dput(dentry);
dentry = dget(dparent);
......@@ -157,9 +163,19 @@ nfsd_lookup(struct svc_rqst *rqstp, struct svc_fh *fhp, const char *name,
struct dentry *mounts = dget(dentry);
while (follow_down(&mnt,&mounts)&&d_mountpoint(mounts))
;
exp2 = exp_get_by_name(exp->ex_client, mnt,
mounts, &rqstp->rq_chandle);
if (exp2 && EX_CROSSMNT(exp2)) {
if (IS_ERR(exp2)) {
err = PTR_ERR(exp2);
dput(mounts);
dput(dentry);
mntput(mnt);
goto out;
}
if (exp2 &&
((exp->ex_flags & NFSEXP_CROSSMNT)
|| EX_NOHIDE(exp2))) {
/* successfully crossed mount point */
exp_put(exp);
exp = exp2;
......
include/asm-generic/xor.h
View file @ 65511c2b
......@@ -678,35 +678,35 @@ xor_32regs_p_5(unsigned long bytes, unsigned long *p1, unsigned long *p2,
}
static struct xor_block_template xor_block_8regs = {
name: "8regs",
do_2: xor_8regs_2,
do_3: xor_8regs_3,
do_4: xor_8regs_4,
do_5: xor_8regs_5,
.name = "8regs",
.do_2 = xor_8regs_2,
.do_3 = xor_8regs_3,
.do_4 = xor_8regs_4,
.do_5 = xor_8regs_5,
};
static struct xor_block_template xor_block_32regs = {
name: "32regs",
do_2: xor_32regs_2,
do_3: xor_32regs_3,
do_4: xor_32regs_4,
do_5: xor_32regs_5,
.name = "32regs",
.do_2 = xor_32regs_2,
.do_3 = xor_32regs_3,
.do_4 = xor_32regs_4,
.do_5 = xor_32regs_5,
};
static struct xor_block_template xor_block_8regs_p = {
name: "8regs_prefetch",
do_2: xor_8regs_p_2,
do_3: xor_8regs_p_3,
do_4: xor_8regs_p_4,
do_5: xor_8regs_p_5,
.name = "8regs_prefetch",
.do_2 = xor_8regs_p_2,
.do_3 = xor_8regs_p_3,
.do_4 = xor_8regs_p_4,
.do_5 = xor_8regs_p_5,
};
static struct xor_block_template xor_block_32regs_p = {
name: "32regs_prefetch",
do_2: xor_32regs_p_2,
do_3: xor_32regs_p_3,
do_4: xor_32regs_p_4,
do_5: xor_32regs_p_5,
.name = "32regs_prefetch",
.do_2 = xor_32regs_p_2,
.do_3 = xor_32regs_p_3,
.do_4 = xor_32regs_p_4,
.do_5 = xor_32regs_p_5,
};
#define XOR_TRY_TEMPLATES \
......
include/asm-i386/xor.h
View file @ 65511c2b
......@@ -25,6 +25,7 @@
#define XO3(x,y) " pxor 8*("#x")(%4), %%mm"#y" ;\n"
#define XO4(x,y) " pxor 8*("#x")(%5), %%mm"#y" ;\n"
#include <asm/i387.h>
static void
xor_pII_mmx_2(unsigned long bytes, unsigned long *p1, unsigned long *p2)
......
include/linux/nfsd/export.h
View file @ 65511c2b
......@@ -35,12 +35,13 @@
#define NFSEXP_UIDMAP 0x0040
#define NFSEXP_KERBEROS 0x0080 /* not available */
#define NFSEXP_SUNSECURE 0x0100
#define NFSEXP_CROSSMNT 0x0200
#define NFSEXP_NOHIDE 0x0200
#define NFSEXP_NOSUBTREECHECK 0x0400
#define NFSEXP_NOAUTHNLM 0x0800 /* Don't authenticate NLM requests - just trust */
#define NFSEXP_MSNFS 0x1000 /* do silly things that MS clients expect */
#define NFSEXP_FSID 0x2000
#define NFSEXP_ALLFLAGS 0x3FFF
#define NFSEXP_CROSSMNT 0x4000
#define NFSEXP_ALLFLAGS 0x7FFF
#ifdef __KERNEL__
......@@ -73,7 +74,7 @@ struct svc_expkey {
#define EX_SECURE(exp) (!((exp)->ex_flags & NFSEXP_INSECURE_PORT))
#define EX_ISSYNC(exp) (!((exp)->ex_flags & NFSEXP_ASYNC))
#define EX_RDONLY(exp) ((exp)->ex_flags & NFSEXP_READONLY)
#define EX_CROSSMNT(exp) ((exp)->ex_flags & NFSEXP_CROSSMNT)
#define EX_NOHIDE(exp) ((exp)->ex_flags & NFSEXP_NOHIDE)
#define EX_SUNSECURE(exp) ((exp)->ex_flags & NFSEXP_SUNSECURE)
#define EX_WGATHER(exp) ((exp)->ex_flags & NFSEXP_GATHERED_WRITES)
......
include/linux/raid/md.h
View file @ 65511c2b
......@@ -27,6 +27,7 @@
#include <linux/module.h>
#include <linux/hdreg.h>
#include <linux/proc_fs.h>
#include <linux/seq_file.h>
#include <linux/smp_lock.h>
#include <linux/delay.h>
#include <net/checksum.h>
......@@ -68,13 +69,14 @@ extern inline char * bdev_partition_name (struct block_device *bdev)
}
extern int register_md_personality (int p_num, mdk_personality_t *p);
extern int unregister_md_personality (int p_num);
extern mdk_thread_t * md_register_thread (void (*run) (void *data),
void *data, const char *name);
extern mdk_thread_t * md_register_thread (void (*run) (mddev_t *mddev),
mddev_t *mddev, const char *name);
extern void md_unregister_thread (mdk_thread_t *thread);
extern void md_wakeup_thread(mdk_thread_t *thread);
extern void md_check_recovery(mddev_t *mddev);
extern void md_interrupt_thread (mdk_thread_t *thread);
extern void md_write_start(mddev_t *mddev);
extern void md_write_end(mddev_t *mddev, mdk_thread_t *thread);
extern void md_write_end(mddev_t *mddev);
extern void md_handle_safemode(mddev_t *mddev);
extern void md_done_sync(mddev_t *mddev, int blocks, int ok);
extern void md_sync_acct(mdk_rdev_t *rdev, unsigned long nr_sectors);
......
include/linux/raid/md_k.h
View file @ 65511c2b
......@@ -155,6 +155,7 @@ struct mdk_rdev_s
struct page *sb_page;
int sb_loaded;
sector_t data_offset; /* start of data in array */
sector_t sb_offset;
int preferred_minor; /* autorun support */
......@@ -206,22 +207,31 @@ struct mddev_s
char uuid[16];
struct mdk_thread_s *thread; /* management thread */
struct mdk_thread_s *sync_thread; /* doing resync or reconstruct */
unsigned long curr_resync; /* blocks scheduled */
unsigned long resync_mark; /* a recent timestamp */
unsigned long resync_mark_cnt;/* blocks written at resync_mark */
/* recovery_running is 0 for no recovery/resync,
* 1 for active recovery
* 2 for active resync
* -error for an error (e.g. -EINTR)
* it can only be set > 0 under reconfig_sem
/* recovery/resync flags
* NEEDED: we might need to start a resync/recover
* RUNNING: a thread is running, or about to be started
* SYNC: actually doing a resync, not a recovery
* ERR: and IO error was detected - abort the resync/recovery
* INTR: someone requested a (clean) early abort.
* DONE: thread is done and is waiting to be reaped
*/
int recovery_running;
int recovery_error; /* error from recovery write */
#define MD_RECOVERY_RUNNING 0
#define MD_RECOVERY_SYNC 1
#define MD_RECOVERY_ERR 2
#define MD_RECOVERY_INTR 3
#define MD_RECOVERY_DONE 4
#define MD_RECOVERY_NEEDED 5
unsigned long recovery;
int in_sync; /* know to not need resync */
struct semaphore reconfig_sem;
atomic_t active;
int spares;
int degraded; /* whether md should consider
* adding a spare
......@@ -230,9 +240,11 @@ struct mddev_s
atomic_t recovery_active; /* blocks scheduled, but not written */
wait_queue_head_t recovery_wait;
sector_t recovery_cp;
int safemode; /* if set, update "clean" superblock
unsigned int safemode; /* if set, update "clean" superblock
* when no writes pending.
*/
unsigned int safemode_delay;
struct timer_list safemode_timer;
atomic_t writes_pending;
request_queue_t queue; /* for plugging ... */
......@@ -245,7 +257,7 @@ struct mdk_personality_s
int (*make_request)(request_queue_t *q, struct bio *bio);
int (*run)(mddev_t *mddev);
int (*stop)(mddev_t *mddev);
int (*status)(char *page, mddev_t *mddev);
void (*status)(struct seq_file *seq, mddev_t *mddev);
/* error_handler must set ->faulty and clear ->in_sync
* if appropriate, and should abort recovery if needed
*/
......@@ -292,8 +304,8 @@ extern mdk_rdev_t * find_rdev_nr(mddev_t *mddev, int nr);
ITERATE_RDEV_GENERIC(pending_raid_disks,rdev,tmp)
typedef struct mdk_thread_s {
void (*run) (void *data);
void *data;
void (*run) (mddev_t *mddev);
mddev_t *mddev;
wait_queue_head_t wqueue;
unsigned long flags;
struct completion *event;
......
include/linux/raid/md_p.h
View file @ 65511c2b
......@@ -173,5 +173,58 @@ static inline __u64 md_event(mdp_super_t *sb) {
return (ev<<32)| sb->events_lo;
}
/*
* The version-1 superblock :
* All numeric fields are little-endian.
*
* total size: 256 bytes plus 2 per device.
* 1K allows 384 devices.
*/
struct mdp_superblock_1 {
/* constant array information - 128 bytes */
__u32 magic; /* MD_SB_MAGIC: 0xa92b4efc - little endian */
__u32 major_version; /* 1 */
__u32 feature_map; /* 0 for now */
__u32 pad0; /* always set to 0 when writing */
__u8 set_uuid[16]; /* user-space generated. */
char set_name[32]; /* set and interpreted by user-space */
__u64 ctime; /* lo 40 bits are seconds, top 24 are microseconds or 0*/
__u32 level; /* -4 (multipath), -1 (linear), 0,1,4,5 */
__u32 layout; /* only for raid5 currently */
__u64 size; /* used size of component devices, in 512byte sectors */
__u32 chunksize; /* in 512byte sectors */
__u32 raid_disks;
__u8 pad1[128-92]; /* set to 0 when written */
/* constant this-device information - 64 bytes */
__u64 data_offset; /* sector start of data, often 0 */
__u64 data_size; /* sectors in this device that can be used for data */
__u64 super_offset; /* sector start of this superblock */
__u64 recovery_offset;/* sectors before this offset (from data_offset) have been recovered */
__u32 dev_number; /* permanent identifier of this device - not role in raid */
__u32 cnt_corrected_read; /* number of read errors that were corrected by re-writing */
__u8 device_uuid[16]; /* user-space setable, ignored by kernel */
__u8 pad2[64-56]; /* set to 0 when writing */
/* array state information - 64 bytes */
__u64 utime; /* 40 bits second, 24 btes microseconds */
__u64 events; /* incremented when superblock updated */
__u64 resync_offset; /* data before this offset (from data_offset) known to be in sync */
__u32 sb_csum; /* checksum upto devs[max_dev] */
__u32 max_dev; /* size of devs[] array to consider */
__u8 pad3[64-40]; /* set to 0 when writing */
/* device state information. Indexed by dev_number.
* 2 bytes per device
* Note there are no per-device state flags. State information is rolled
* into the 'roles' value. If a device is spare or faulty, then it doesn't
* have a meaningful role.
*/
__u16 dev_roles[0]; /* role in array, or 0xffff for a spare, or 0xfffe for faulty */
};
#endif
include/linux/raid/multipath.h
View file @ 65511c2b
......@@ -13,7 +13,6 @@ struct multipath_private_data {
struct multipath_info multipaths[MD_SB_DISKS];
int raid_disks;
int working_disks;
mdk_thread_t *thread;
spinlock_t device_lock;
mempool_t *pool;
......
include/linux/raid/raid1.h
View file @ 65511c2b
......@@ -19,7 +19,6 @@ struct r1_private_data_s {
int working_disks;
int last_used;
sector_t next_seq_sect;
mdk_thread_t *thread;
spinlock_t device_lock;
/* for use when syncing mirrors: */
......@@ -34,7 +33,6 @@ struct r1_private_data_s {
mempool_t *r1bio_pool;
mempool_t *r1buf_pool;
char thread_name[MD_THREAD_NAME_MAX];
};
typedef struct r1_private_data_s conf_t;
......
include/linux/raid/raid5.h
View file @ 65511c2b
......@@ -203,7 +203,6 @@ struct disk_info {
struct raid5_private_data {
struct stripe_head **stripe_hashtbl;
mddev_t *mddev;
mdk_thread_t *thread;
struct disk_info disks[MD_SB_DISKS];
struct disk_info *spare;
int chunk_size, level, algorithm;
......@@ -226,7 +225,6 @@ struct raid5_private_data {
* waiting for 25% to be free
*/
spinlock_t device_lock;
char thread_name[MD_THREAD_NAME_MAX];
};
typedef struct raid5_private_data raid5_conf_t;
......
include/linux/sunrpc/cache.h
View file @ 65511c2b
......@@ -190,6 +190,7 @@ RTN *FNAME ARGS \
else read_unlock(&(DETAIL)->hash_lock); \
if (set) \
cache_fresh(DETAIL, &tmp->MEMBER, item->MEMBER.expiry_time); \
if (set==1 && new) cache_fresh(DETAIL, &new->MEMBER, 0); \
if (new) (DETAIL)->cache_put(&new->MEMBER, DETAIL); \
return tmp; \
} \
......
net/sunrpc/svcauth_unix.c
View file @ 65511c2b
......@@ -441,9 +441,6 @@ svcauth_unix_accept(struct svc_rqst *rqstp, u32 *authp)
return SVC_DENIED;
}
/* Put NULL verifier */
svc_putu32(resv, RPC_AUTH_NULL);
svc_putu32(resv, 0);
key.m_class = rqstp->rq_server->sv_program->pg_class;
key.m_addr = rqstp->rq_addr.sin_addr;
......@@ -470,8 +467,13 @@ svcauth_unix_accept(struct svc_rqst *rqstp, u32 *authp)
}
else rv = SVC_DROP;
if (rqstp->rq_client == NULL && rqstp->rq_proc != 0)
if (rv == SVC_OK && rqstp->rq_client == NULL && rqstp->rq_proc != 0)
goto badcred;
/* Put NULL verifier */
svc_putu32(resv, RPC_AUTH_NULL);
svc_putu32(resv, 0);
return rv;
badcred:
......
net/sunrpc/svcsock.c
View file @ 65511c2b
......@@ -577,12 +577,15 @@ svc_udp_recvfrom(struct svc_rqst *rqstp)
if (skb_is_nonlinear(skb)) {
/* we have to copy */
local_bh_disable();
if (csum_partial_copy_to_xdr(&rqstp->rq_arg, skb)) {
local_bh_enable();
/* checksum error */
skb_free_datagram(svsk->sk_sk, skb);
svc_sock_received(svsk);
return 0;
}
local_bh_enable();
skb_free_datagram(svsk->sk_sk, skb);
} else {
/* we can use it in-place */
......@@ -1435,7 +1438,7 @@ static struct cache_deferred_req *
svc_defer(struct cache_req *req)
{
struct svc_rqst *rqstp = container_of(req, struct svc_rqst, rq_chandle);
int size = sizeof(struct svc_deferred_req) + (rqstp->rq_arg.head[0].iov_len);
int size = sizeof(struct svc_deferred_req) + (rqstp->rq_arg.len);
struct svc_deferred_req *dr;
if (rqstp->rq_arg.page_len)
......@@ -1444,6 +1447,7 @@ svc_defer(struct cache_req *req)
dr = rqstp->rq_deferred;
rqstp->rq_deferred = NULL;
} else {
int skip = rqstp->rq_arg.len - rqstp->rq_arg.head[0].iov_len;
/* FIXME maybe discard if size too large */
dr = kmalloc(size, GFP_KERNEL);
if (dr == NULL)
......@@ -1452,8 +1456,8 @@ svc_defer(struct cache_req *req)
dr->serv = rqstp->rq_server;
dr->prot = rqstp->rq_prot;
dr->addr = rqstp->rq_addr;
dr->argslen = rqstp->rq_arg.head[0].iov_len >> 2;
memcpy(dr->args, rqstp->rq_arg.head[0].iov_base, dr->argslen<<2);
dr->argslen = rqstp->rq_arg.len >> 2;
memcpy(dr->args, rqstp->rq_arg.head[0].iov_base-skip, dr->argslen<<2);
}
spin_lock(&rqstp->rq_server->sv_lock);
rqstp->rq_sock->sk_inuse++;
......
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