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md: two small fixes to handling interrupt resync.

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1/ If a resync is aborted we should record how far we got
 (recovery_cp) the last request that we know has completed
 (->curr_resync_completed) rather than the last request that was
 submitted (->curr_resync).

2/ When a resync aborts we still want to update the metadata with
 any changes, so set MD_CHANGE_DEVS even if we 'skip'.

Signed-off-by: NeilBrown <neilb@suse.de>
This commit is contained in:
NeilBrown
2012-02-07 12:01:51 +11:00
parent 34f8ac6d79
commit db91ff55bd
1 changed files with 3 additions and 2 deletions
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5
drivers/md/md.c
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@@ -7333,7 +7333,8 @@ void md_do_sync(struct mddev *mddev)
printk(KERN_INFO printk(KERN_INFO
"md: checkpointing %s of %s.\n", "md: checkpointing %s of %s.\n",
desc, mdname(mddev)); desc, mdname(mddev));
mddev->recovery_cp = mddev->curr_resync; mddev->recovery_cp =
mddev->curr_resync_completed;
} }
} else } else
mddev->recovery_cp = MaxSector; mddev->recovery_cp = MaxSector;
@@ -7351,9 +7352,9 @@ void md_do_sync(struct mddev *mddev)
rcu_read_unlock(); rcu_read_unlock();
} }
} }
skip:
set_bit(MD_CHANGE_DEVS, &mddev->flags); set_bit(MD_CHANGE_DEVS, &mddev->flags);
skip:
if (!test_bit(MD_RECOVERY_INTR, &mddev->recovery)) { if (!test_bit(MD_RECOVERY_INTR, &mddev->recovery)) {
/* We completed so min/max setting can be forgotten if used. */ /* We completed so min/max setting can be forgotten if used. */
if (test_bit(MD_RECOVERY_REQUESTED, &mddev->recovery)) if (test_bit(MD_RECOVERY_REQUESTED, &mddev->recovery))