Aria fixes:

- Fixed a bug where we didn't signal a thread waiting for bitmap flush that it's now time to continue which caused a deadlock in Aria.
- Fix for lp:700623 "Aria recovery: ma_blockrec.c:3930: _ma_update_at_original_place: Assertion `block->org_bitmap_value == _ma_bitmap_get_page_bits(info, &info->s->bitmap, page)' failed"
- Fixed a bug in pagecache where a block could change while it was in use.
- In maria_chk set --update-state to on by default so that open_count is cleared if table was ok during check.

storage/maria/ma_bitmap.c:
  Fixed a bug where we didn't signal a thread waiting for bitmap flush that it's now time to continue.
  This fix adds counters for the different conditions that may be waited upon and signals if there is a waiter when the condition changes.
storage/maria/ma_blockrec.c:
  Check if directory if full when calculating what should be in the bitmap.
  Fixes lp:700623 "Aria recovery: ma_blockrec.c:3930: _ma_update_at_original_place: Assertion `block->org_bitmap_value == _ma_bitmap_get_page_bits(info, &info->s->bitmap, page)' failed"
storage/maria/ma_pagecache.c:
  Added more comments
  Removed some duplicated DBUG_PRINT and DBUG_ASSERT()
  find_block() now waits for block to be usable if we are not copying it directly. This fixes a bug where a block changed information while we where using it. Fixed by adding an extra parameter to find_block()
  Simplified code in make_lock_and_pin() as block can never be == 0 here.
storage/maria/ma_recovery.c:
  Reset open_count for tables that are closed in middle of recovery.
storage/maria/maria_chk.c:
  Set --update-state to on by default so that open_count is cleared if table was ok during check.
  Update time when table was recovered/checked if --update-state was used.
  Updated --help message with missing information.
storage/maria/maria_def.h:
  Added wait counters

storage/maria/ma_bitmap.c

@@ -235,7 +235,8 @@ my_bool _ma_bitmap_init(MARIA_SHARE *share, File file)
     The +1 is to add the bitmap page, as this doesn't have to be covered
   */
   bitmap->pages_covered= aligned_bit_blocks * 16 + 1;
-  bitmap->flush_all_requested= 0;
+  bitmap->flush_all_requested= bitmap->waiting_for_flush_all_requested= 
+    bitmap->waiting_for_non_flushable= 0;
   bitmap->non_flushable= 0;
 
   /* Update size for bits */
@@ -365,6 +366,7 @@ filter_flush_bitmap_pages(enum pagecache_page_type type
 my_bool _ma_bitmap_flush_all(MARIA_SHARE *share)
 {
   my_bool res= 0;
+  uint send_signal= 0;
   MARIA_FILE_BITMAP *bitmap= &share->bitmap;
   DBUG_ENTER("_ma_bitmap_flush_all");
 
@@ -374,7 +376,7 @@ my_bool _ma_bitmap_flush_all(MARIA_SHARE *share)
     uint len= my_sprintf(buff,
                          (buff, "bitmap_flush:  fd: %d  id: %u  "
                           "changed: %d  changed_not_flushed: %d  "
-                          "flush_all_requsted: %d",
+                          "flush_all_requested: %d",
                           share->bitmap.file.file,
                           share->id,
                           bitmap->changed,
@@ -389,6 +391,7 @@ my_bool _ma_bitmap_flush_all(MARIA_SHARE *share)
   if (bitmap->changed || bitmap->changed_not_flushed)
   {
     bitmap->flush_all_requested++;
+    bitmap->waiting_for_non_flushable++;
 #ifndef WRONG_BITMAP_FLUSH
     while (bitmap->non_flushable > 0)
     {
@@ -396,6 +399,7 @@ my_bool _ma_bitmap_flush_all(MARIA_SHARE *share)
       pthread_cond_wait(&bitmap->bitmap_cond, &bitmap->bitmap_lock);
     }
 #endif
+    bitmap->waiting_for_non_flushable--;
 #ifdef EXTRA_DEBUG_BITMAP
     {
       char tmp[MAX_BITMAP_INFO_LENGTH];      
@@ -440,10 +444,12 @@ my_bool _ma_bitmap_flush_all(MARIA_SHARE *share)
       become false, wake them up.
     */
     DBUG_PRINT("info", ("bitmap flusher waking up others"));
-    if (bitmap->flush_all_requested)
-      pthread_cond_broadcast(&bitmap->bitmap_cond);
+    send_signal= (bitmap->waiting_for_flush_all_requested |
+                  bitmap->waiting_for_non_flushable);
   }
   pthread_mutex_unlock(&bitmap->bitmap_lock);
+  if (send_signal)
+    pthread_cond_broadcast(&bitmap->bitmap_cond);
   DBUG_RETURN(res);
 }
 
@@ -473,11 +479,13 @@ void _ma_bitmap_lock(MARIA_SHARE *share)
 
   pthread_mutex_lock(&bitmap->bitmap_lock);
   bitmap->flush_all_requested++;
+  bitmap->waiting_for_non_flushable++;
   while (bitmap->non_flushable)
   {
     DBUG_PRINT("info", ("waiting for bitmap to be flushable"));
     pthread_cond_wait(&bitmap->bitmap_cond, &bitmap->bitmap_lock);
   }
+  bitmap->waiting_for_non_flushable--;
   /*
     Ensure that _ma_bitmap_flush_all() and _ma_bitmap_lock() are blocked.
     ma_bitmap_flushable() is blocked thanks to 'flush_all_requested'.
@@ -497,6 +505,7 @@ void _ma_bitmap_lock(MARIA_SHARE *share)
 void _ma_bitmap_unlock(MARIA_SHARE *share)
 {
   MARIA_FILE_BITMAP *bitmap= &share->bitmap;
+  uint send_signal;
   DBUG_ENTER("_ma_bitmap_unlock");
 
   if (!share->now_transactional)
@@ -504,10 +513,12 @@ void _ma_bitmap_unlock(MARIA_SHARE *share)
   DBUG_ASSERT(bitmap->flush_all_requested > 0 && bitmap->non_flushable == 1);
 
   pthread_mutex_lock(&bitmap->bitmap_lock);
-  bitmap->flush_all_requested--;
   bitmap->non_flushable= 0;
+  send_signal= bitmap->waiting_for_non_flushable;
+  if (!--bitmap->flush_all_requested)
+    send_signal|= bitmap->waiting_for_flush_all_requested;
   pthread_mutex_unlock(&bitmap->bitmap_lock);
-  if (bitmap->flush_all_requested > 0)
+  if (send_signal)
     pthread_cond_broadcast(&bitmap->bitmap_cond);
   DBUG_VOID_RETURN;
 }
@@ -2334,7 +2345,7 @@ void _ma_bitmap_flushable(MARIA_HA *info, int non_flushable_inc)
         the bitmap's mutex.
       */
       _ma_bitmap_unpin_all(share);
-      if (unlikely(bitmap->flush_all_requested))
+      if (unlikely(bitmap->waiting_for_non_flushable))
       {
         DBUG_PRINT("info", ("bitmap flushable waking up flusher"));
         pthread_cond_broadcast(&bitmap->bitmap_cond);
@@ -2347,6 +2358,8 @@ void _ma_bitmap_flushable(MARIA_HA *info, int non_flushable_inc)
   }
   DBUG_ASSERT(non_flushable_inc == 1);
   DBUG_ASSERT(info->non_flushable_state == 0);
+  
+  bitmap->waiting_for_flush_all_requested++;
   while (unlikely(bitmap->flush_all_requested))
   {
     /*
@@ -2363,6 +2376,7 @@ void _ma_bitmap_flushable(MARIA_HA *info, int non_flushable_inc)
     DBUG_PRINT("info", ("waiting for bitmap flusher"));
     pthread_cond_wait(&bitmap->bitmap_cond, &bitmap->bitmap_lock);
   }
+  bitmap->waiting_for_flush_all_requested--;
   bitmap->non_flushable++;
   DBUG_PRINT("info", ("bitmap->non_flushable: %u", bitmap->non_flushable));
   pthread_mutex_unlock(&bitmap->bitmap_lock);
@@ -2490,7 +2504,7 @@ my_bool _ma_bitmap_release_unused(MARIA_HA *info, MARIA_BITMAP_BLOCKS *blocks)
     if (--bitmap->non_flushable == 0)
     {
       _ma_bitmap_unpin_all(info->s);
-      if (unlikely(bitmap->flush_all_requested))
+      if (unlikely(bitmap->waiting_for_non_flushable))
       {
         DBUG_PRINT("info", ("bitmap flushable waking up flusher"));
         pthread_cond_broadcast(&bitmap->bitmap_cond);

storage/maria/ma_blockrec.c

@@ -3922,8 +3922,11 @@ static my_bool _ma_update_at_original_place(MARIA_HA *info,
     goto err;
   block= blocks->block;
   block->empty_space= row_pos.empty_space;
-  block->org_bitmap_value= _ma_free_size_to_head_pattern(&share->bitmap,
-                                                         org_empty_size);
+  block->org_bitmap_value=
+    _ma_free_size_to_head_pattern(&share->bitmap,
+                                  (enough_free_entries_on_page(share, buff) ?
+                                   org_empty_size : 0));
+                            
   DBUG_ASSERT(block->org_bitmap_value ==
               _ma_bitmap_get_page_bits(info, &info->s->bitmap, page));
   block->used|= BLOCKUSED_USE_ORG_BITMAP;

storage/maria/ma_pagecache.c

@@ -113,7 +113,7 @@
               (uint)((B)->hash_link ? \
                      (B)->hash_link->requests : \
                        0), \
-              block->wlocks, block->rlocks, block->rlocks_queue, \
+              (B)->wlocks, (B)->rlocks, (B)->rlocks_queue, \
               (uint)(B)->pins, (uint)(B)->status, \
               page_cache_page_type_str[(B)->type]))
 
@@ -153,8 +153,20 @@ struct st_pagecache_hash_link
 /* simple states of a block */
 #define PCBLOCK_ERROR       1 /* an error occurred when performing disk i/o  */
 #define PCBLOCK_READ        2 /* the is page in the block buffer             */
-#define PCBLOCK_IN_SWITCH   4 /* block is preparing to read new page         */
-#define PCBLOCK_REASSIGNED  8 /* block does not accept requests for old page */
+
+/*
+  A tread is reading the data to the page. The page is not yet ready
+  to be used.
+*/
+#define PCBLOCK_IN_SWITCH   4
+/*
+  Block does not accept new requests for old page that would cause
+  the page to be pinned or written to.
+  (Reads that copies the block can still continue).
+  This state happens when another thread is waiting for readers to finish
+  to read/write new data to the block.
+*/
+#define PCBLOCK_REASSIGNED  8
 #define PCBLOCK_IN_FLUSH   16 /* block is in flush operation                 */
 #define PCBLOCK_CHANGED    32 /* block buffer contains a dirty page          */
 #define PCBLOCK_DIRECT_W   64 /* possible direct write to the block          */
@@ -1807,7 +1819,9 @@ static PAGECACHE_HASH_LINK *get_hash_link(PAGECACHE *pagecache,
       pageno              number of the page in the file
       init_hits_left      how initialize the block counter for the page
       wrmode              <-> get for writing
-      reg_req             Register request to thye page
+      block_is_copied     1 if block will be copied from page cache under
+                          the pagelock mutex.
+      reg_req             Register request to the page
       page_st        out  {PAGE_READ,PAGE_TO_BE_READ,PAGE_WAIT_TO_BE_READ}
 
   RETURN VALUE
@@ -1836,6 +1850,7 @@ static PAGECACHE_BLOCK_LINK *find_block(PAGECACHE *pagecache,
                                         pgcache_page_no_t pageno,
                                         int init_hits_left,
                                         my_bool wrmode,
+                                        my_bool block_is_copied,
                                         my_bool reg_req,
                                         int *page_st)
 {
@@ -1941,7 +1956,7 @@ static PAGECACHE_BLOCK_LINK *find_block(PAGECACHE *pagecache,
        Only reading requests can proceed until the old dirty page is flushed,
        all others are to be suspended, then resubmitted
     */
-    if (!wrmode && !(block->status & PCBLOCK_REASSIGNED))
+    if (!wrmode && block_is_copied && !(block->status & PCBLOCK_REASSIGNED))
     {
       if (reg_req)
         reg_requests(pagecache, block, 1);
@@ -2135,7 +2150,7 @@ static PAGECACHE_BLOCK_LINK *find_block(PAGECACHE *pagecache,
                             (my_bool)(block->hash_link ? 1 : 0));
           PCBLOCK_INFO(block);
           block->status= error ? PCBLOCK_ERROR : 0;
-          block->error=  (int16) my_errno;
+          block->error=  error ? (int16) my_errno : 0;
 #ifndef DBUG_OFF
           block->type= PAGECACHE_EMPTY_PAGE;
           if (error)
@@ -2536,22 +2551,13 @@ static my_bool make_lock_and_pin(PAGECACHE *pagecache,
                                  my_bool any)
 {
   DBUG_ENTER("make_lock_and_pin");
+  DBUG_PRINT("enter", ("block: 0x%lx (%u)  lock: %s  pin: %s any %d",
+                       (ulong)block, PCBLOCK_NUMBER(pagecache, block),
+                       page_cache_page_lock_str[lock],
+                       page_cache_page_pin_str[pin], (int)any));
+  PCBLOCK_INFO(block);
 
-  DBUG_PRINT("enter", ("block: 0x%lx", (ulong)block));
-#ifndef DBUG_OFF
-  if (block)
-  {
-    DBUG_PRINT("enter", ("block: 0x%lx (%u)  wrlocks: %u  rdlocks: %u  "
-                         "rdlocks_q: %u  pins: %u  lock: %s  pin: %s any %d",
-                         (ulong)block, PCBLOCK_NUMBER(pagecache, block),
-                         block->wlocks, block->rlocks, block->rlocks_queue,
-                         block->pins,
-                         page_cache_page_lock_str[lock],
-                         page_cache_page_pin_str[pin], (int)any));
-    PCBLOCK_INFO(block);
-  }
-#endif
-
+  DBUG_ASSERT(block);
   DBUG_ASSERT(!any ||
               ((lock == PAGECACHE_LOCK_LEFT_UNLOCKED) &&
                (pin == PAGECACHE_UNPIN)));
@@ -2619,17 +2625,13 @@ static my_bool make_lock_and_pin(PAGECACHE *pagecache,
     DBUG_ASSERT(0); /* Never should happened */
   }
 
-#ifndef DBUG_OFF
-  if (block)
-    PCBLOCK_INFO(block);
-#endif
+  PCBLOCK_INFO(block);
   DBUG_RETURN(0);
 retry:
   DBUG_PRINT("INFO", ("Retry block 0x%lx", (ulong)block));
   PCBLOCK_INFO(block);
   DBUG_ASSERT(block->hash_link->requests > 0);
   block->hash_link->requests--;
-  PCBLOCK_INFO(block);
   DBUG_RETURN(1);
 
 }
@@ -2661,7 +2663,6 @@ static void read_block(PAGECACHE *pagecache,
                        PAGECACHE_BLOCK_LINK *block,
                        my_bool primary)
 {
-
   DBUG_ENTER("read_block");
   DBUG_PRINT("enter", ("read block: 0x%lx  primary: %d",
                        (ulong)block, primary));
@@ -2823,8 +2824,7 @@ void pagecache_unlock(PAGECACHE *pagecache,
                        page_cache_page_pin_str[pin]));
   /* we do not allow any lock/pin increasing here */
   DBUG_ASSERT(pin != PAGECACHE_PIN);
-  DBUG_ASSERT(lock != PAGECACHE_LOCK_READ);
-  DBUG_ASSERT(lock != PAGECACHE_LOCK_WRITE);
+  DBUG_ASSERT(lock != PAGECACHE_LOCK_READ && lock != PAGECACHE_LOCK_WRITE);
 
   pagecache_pthread_mutex_lock(&pagecache->cache_lock);
   /*
@@ -2835,7 +2835,7 @@ void pagecache_unlock(PAGECACHE *pagecache,
 
   inc_counter_for_resize_op(pagecache);
   /* See NOTE for pagecache_unlock about registering requests */
-  block= find_block(pagecache, file, pageno, 0, 0,
+  block= find_block(pagecache, file, pageno, 0, 0, 0,
                     pin == PAGECACHE_PIN_LEFT_UNPINNED, &page_st);
   PCBLOCK_INFO(block);
   DBUG_ASSERT(block != 0 && page_st == PAGE_READ);
@@ -2924,7 +2924,7 @@ void pagecache_unpin(PAGECACHE *pagecache,
 
   inc_counter_for_resize_op(pagecache);
   /* See NOTE for pagecache_unlock about registering requests */
-  block= find_block(pagecache, file, pageno, 0, 0, 0, &page_st);
+  block= find_block(pagecache, file, pageno, 0, 0, 0, 0, &page_st);
   DBUG_ASSERT(block != 0);
   DBUG_ASSERT(page_st == PAGE_READ);
   /* we can't unpin such page without unlock */
@@ -3367,7 +3367,7 @@ uchar *pagecache_read(PAGECACHE *pagecache,
     /* See NOTE for pagecache_unlock about registering requests. */
     reg_request= ((new_pin == PAGECACHE_PIN_LEFT_UNPINNED) ||
                   (new_pin == PAGECACHE_PIN));
-    block= find_block(pagecache, file, pageno, level,
+    block= find_block(pagecache, file, pageno, level, buff != 0,
                       lock == PAGECACHE_LOCK_WRITE,
                       reg_request, &page_st);
     DBUG_PRINT("info", ("Block type: %s current type %s",
@@ -3785,7 +3785,6 @@ my_bool pagecache_delete(PAGECACHE *pagecache,
     /* See NOTE for pagecache_unlock about registering requests. */
     if (pin == PAGECACHE_PIN)
       reg_requests(pagecache, block, 1);
-    DBUG_ASSERT(block != 0);
     if (make_lock_and_pin(pagecache, block, lock, pin, FALSE))
     {
       /*
@@ -3964,7 +3963,7 @@ my_bool pagecache_write_part(PAGECACHE *pagecache,
     reg_request= ((pin == PAGECACHE_PIN_LEFT_UNPINNED) ||
                   (pin == PAGECACHE_PIN));
     block= find_block(pagecache, file, pageno, level,
-                      TRUE,
+                      TRUE, FALSE,
                       reg_request, &page_st);
     if (!block)
     {

storage/maria/ma_recovery.c

 /* Copyright (C) 2006, 2007 MySQL AB
-   Copyright (C) 2010 Monty Program Ab
+   Copyright (C) 2010-2011 Monty Program Ab
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -1292,6 +1292,21 @@ prototype_redo_exec_hook(FILE_ID)
   {
     tprint(tracef, "   Closing table '%s'\n", info->s->open_file_name.str);
     prepare_table_for_close(info, rec->lsn);
+
+    /*
+      Ensure that open count is 1 on close.  This is needed as the
+      table may initially had an open_count > 0 when we initially
+      opened it as the server may have crashed without closing it
+      properly.  As we now have applied all redo's for the table up to
+      now, we know the table is ok, so it's safe to reset the open
+      count to 0.
+    */
+    if (info->s->state.open_count != 0 && info->s->reopen == 1)
+    {
+      /* let ma_close() mark the table properly closed */
+      info->s->state.open_count= 1;
+      info->s->global_changed= 1;
+    }
     if (maria_close(info))
     {
       eprint(tracef, "Failed to close table");
@@ -3412,7 +3427,7 @@ static int close_all_tables(void)
     */
     if (info->s->state.open_count != 0)
     {
-      /* let ma_close() mark the table properly closed */
+      /* let maria_close() mark the table properly closed */
       info->s->state.open_count= 1;
       info->s->global_changed= 1;
     }

storage/maria/maria_chk.c

@@ -42,7 +42,7 @@ static CHARSET_INFO *set_collation;
 static int stopwords_inited= 0;
 static MY_TMPDIR maria_chk_tmpdir;
 static my_bool opt_transaction_logging, opt_debug, opt_require_control_file;
-static my_bool opt_warning_for_wrong_transid;
+static my_bool opt_warning_for_wrong_transid, opt_update_state;
 
 static const char *type_names[]=
 {
@@ -348,7 +348,8 @@ static struct my_option my_long_options[] =
    "Mark tables as crashed if any errors were found and clean if check didn't "
    "find any errors. This allows one to get rid of warnings like 'table not "
    "properly closed'",
-   0, 0, 0, GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0},
+   &opt_update_state, &opt_update_state, 0, GET_BOOL, NO_ARG,
+   1, 0, 0, 0, 0, 0},
   {"unpack", 'u',
    "Unpack file packed with maria_pack.",
    0, 0, 0, GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0},
@@ -483,8 +484,12 @@ static void usage(void)
   -i, --information   Print statistics information about table that is checked.\n\
   -m, --medium-check  Faster than extend-check, but only finds 99.99% of\n\
 		      all errors.  Should be good enough for most cases.\n\
+  -T, --read-only     Don't mark table as checked.\n\
   -U, --update-state  Mark tables as crashed if you find any errors.\n\
-  -T, --read-only     Don't mark table as checked.\n");
+  --warning-for-wrong-transaction-id\n\
+   Give a warning if we find a transaction id in the table that is bigger\n\
+   than what exists in the control file. Use --skip-... to disable warning\n\
+  ");
 
   puts("\
 Recover (repair)/ options (When using '--recover' or '--safe-recover'):\n\
@@ -856,6 +861,7 @@ static void get_options(register int *argc,register char ***argv)
   default_argv= *argv;
   if (isatty(fileno(stdout)))
     check_param.testflag|=T_WRITE_LOOP;
+  check_param.testflag= T_UPDATE_STATE;
 
   if ((ho_error=handle_options(argc, argv, my_long_options, get_one_option)))
     exit(ho_error);
@@ -1326,13 +1332,18 @@ static int maria_chk(HA_CHECK *param, char *filename)
                                   (my_bool) !test(param->testflag & T_AUTO_INC));
 
   if (info->update & HA_STATE_CHANGED && ! (param->testflag & T_READONLY))
+  {
     error|=maria_update_state_info(param, info,
                                    UPDATE_OPEN_COUNT |
-                                   (((param->testflag & T_REP_ANY) ?
+                                   (((param->testflag &
+                                      (T_REP_ANY | T_UPDATE_STATE)) ?
                                      UPDATE_TIME : 0) |
                                     (state_updated ? UPDATE_STAT : 0) |
                                     ((param->testflag & T_SORT_RECORDS) ?
                                      UPDATE_SORT : 0)));
+    if (!(param->testflag & T_SILENT))
+      printf("State updated\n");
+  }
   info->update&= ~HA_STATE_CHANGED;
   _ma_reenable_logging_for_table(info, FALSE);
   maria_lock_database(info, F_UNLCK);
@@ -1438,7 +1449,7 @@ static void descript(HA_CHECK *param, register MARIA_HA *info, char *name)
     if (share->state.check_time)
     {
       get_date(buff,1,share->state.check_time);
-      printf("Recover time:        %s\n",buff);
+      printf("Check/recover time:  %s\n",buff);
     }
     if (share->base.born_transactional)
     {

storage/maria/maria_def.h

@@ -249,7 +249,9 @@ typedef struct st_maria_file_bitmap
   my_bool changed;                     /* 1 if page needs to be written */
   my_bool changed_not_flushed;         /* 1 if some bitmap is not flushed */
   uint flush_all_requested;            /**< If _ma_bitmap_flush_all waiting */
+  uint waiting_for_flush_all_requested; /* If someone is waiting for above */
   uint non_flushable;                  /**< 0 if bitmap and log are in sync */
+  uint waiting_for_non_flushable;      /* If someone is waiting for above */
   PAGECACHE_FILE file;		       /* datafile where bitmap is stored */
 
 #ifdef THREAD