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authorNeilBrown2006-10-03 01:15:57 -0700
committerLinus Torvalds2006-10-03 08:04:18 -0700
commit61df9d91e986f1314af482e7ea5f2312a6cd0d14 (patch)
treec8e21e589e75354e41089eaeb5fe0e2cb04d20d1
parentf022b2fddd97795bc9333ffb6862eacfa95c6a95 (diff)
[PATCH] md: make messages about resync/recovery etc more specific
It is possible to request a 'check' of an md/raid array where the whole array is read and consistancies are reported. This uses the same mechanisms as 'resync' and so reports in the kernel logs that a resync is being started. This understandably confuses/worries people. Also the text in /proc/mdstat suggests a 'resync' is happen when it is just a check. This patch changes those messages to be more specific about what is happening. Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
-rw-r--r--drivers/md/md.c47
1 files changed, 31 insertions, 16 deletions
diff --git a/drivers/md/md.c b/drivers/md/md.c
index b95dd8a183ec..db1ac84a739a 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -4641,9 +4641,11 @@ static void status_resync(struct seq_file *seq, mddev_t * mddev)
seq_printf(seq, " %s =%3u.%u%% (%llu/%llu)",
(test_bit(MD_RECOVERY_RESHAPE, &mddev->recovery)?
"reshape" :
- (test_bit(MD_RECOVERY_SYNC, &mddev->recovery) ?
- "resync" : "recovery")),
- per_milli/10, per_milli % 10,
+ (test_bit(MD_RECOVERY_CHECK, &mddev->recovery)?
+ "check" :
+ (test_bit(MD_RECOVERY_SYNC, &mddev->recovery) ?
+ "resync" : "recovery"))),
+ per_milli/10, per_milli % 10,
(unsigned long long) resync,
(unsigned long long) max_blocks);
@@ -5032,6 +5034,7 @@ void md_do_sync(mddev_t *mddev)
int skipped = 0;
struct list_head *rtmp;
mdk_rdev_t *rdev;
+ char *desc;
/* just incase thread restarts... */
if (test_bit(MD_RECOVERY_DONE, &mddev->recovery))
@@ -5039,6 +5042,18 @@ void md_do_sync(mddev_t *mddev)
if (mddev->ro) /* never try to sync a read-only array */
return;
+ if (test_bit(MD_RECOVERY_SYNC, &mddev->recovery)) {
+ if (test_bit(MD_RECOVERY_CHECK, &mddev->recovery))
+ desc = "data-check";
+ else if (test_bit(MD_RECOVERY_REQUESTED, &mddev->recovery))
+ desc = "requested-resync";
+ else
+ desc = "resync";
+ } else if (test_bit(MD_RECOVERY_RESHAPE, &mddev->recovery))
+ desc = "reshape";
+ else
+ desc = "recovery";
+
/* we overload curr_resync somewhat here.
* 0 == not engaged in resync at all
* 2 == checking that there is no conflict with another sync
@@ -5082,10 +5097,10 @@ void md_do_sync(mddev_t *mddev)
prepare_to_wait(&resync_wait, &wq, TASK_UNINTERRUPTIBLE);
if (!kthread_should_stop() &&
mddev2->curr_resync >= mddev->curr_resync) {
- printk(KERN_INFO "md: delaying resync of %s"
- " until %s has finished resync (they"
+ printk(KERN_INFO "md: delaying %s of %s"
+ " until %s has finished (they"
" share one or more physical units)\n",
- mdname(mddev), mdname(mddev2));
+ desc, mdname(mddev), mdname(mddev2));
mddev_put(mddev2);
schedule();
finish_wait(&resync_wait, &wq);
@@ -5121,12 +5136,12 @@ void md_do_sync(mddev_t *mddev)
j = rdev->recovery_offset;
}
- printk(KERN_INFO "md: syncing RAID array %s\n", mdname(mddev));
- printk(KERN_INFO "md: minimum _guaranteed_ reconstruction speed:"
- " %d KB/sec/disc.\n", speed_min(mddev));
+ printk(KERN_INFO "md: %s of RAID array %s\n", desc, mdname(mddev));
+ printk(KERN_INFO "md: minimum _guaranteed_ speed:"
+ " %d KB/sec/disk.\n", speed_min(mddev));
printk(KERN_INFO "md: using maximum available idle IO bandwidth "
- "(but not more than %d KB/sec) for reconstruction.\n",
- speed_max(mddev));
+ "(but not more than %d KB/sec) for %s.\n",
+ speed_max(mddev), desc);
is_mddev_idle(mddev); /* this also initializes IO event counters */
@@ -5152,8 +5167,8 @@ void md_do_sync(mddev_t *mddev)
if (j>2) {
printk(KERN_INFO
- "md: resuming recovery of %s from checkpoint.\n",
- mdname(mddev));
+ "md: resuming %s of %s from checkpoint.\n",
+ desc, mdname(mddev));
mddev->curr_resync = j;
}
@@ -5236,7 +5251,7 @@ void md_do_sync(mddev_t *mddev)
}
}
}
- printk(KERN_INFO "md: %s: sync done.\n",mdname(mddev));
+ printk(KERN_INFO "md: %s: %s done.\n",mdname(mddev), desc);
/*
* this also signals 'finished resyncing' to md_stop
*/
@@ -5256,8 +5271,8 @@ void md_do_sync(mddev_t *mddev)
if (test_bit(MD_RECOVERY_INTR, &mddev->recovery)) {
if (mddev->curr_resync >= mddev->recovery_cp) {
printk(KERN_INFO
- "md: checkpointing recovery of %s.\n",
- mdname(mddev));
+ "md: checkpointing %s of %s.\n",
+ desc, mdname(mddev));
mddev->recovery_cp = mddev->curr_resync;
}
} else