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md: adjust resync_min usefully when resync aborts. 

When a 'check' or 'repair' finished we should clear resync_min
so that a future check/repair will cover the whole array (by default).
However if it is interrupted, we should update resync_min to
where we got up to, so that when the check/repair continues it
just does the remainder of the array.

Signed-off-by: NeilBrown <neilb@suse.de>
This commit is contained in:
NeilBrown 2009-12-14 12:49:48 +11:00
parent 7820f9e1dd
commit c07b70ad32
1 changed files with 7 additions and 3 deletions
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10
drivers/md/md.c
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@ -6524,11 +6524,15 @@ void md_do_sync(mddev_t *mddev)
set_bit(MD_CHANGE_DEVS, &mddev->flags);
skip:
if (!test_bit(MD_RECOVERY_INTR, &mddev->recovery)) {
/* We completed so min/max setting can be forgotten if used. */
if (test_bit(MD_RECOVERY_REQUESTED, &mddev->recovery))
mddev->resync_min = 0;
mddev->resync_max = MaxSector;
} else if (test_bit(MD_RECOVERY_REQUESTED, &mddev->recovery))
mddev->resync_min = mddev->curr_resync_completed;
mddev->curr_resync = 0;
mddev->curr_resync_completed = 0;
if (!test_bit(MD_RECOVERY_INTR, &mddev->recovery))
/* We completed so max setting can be forgotten. */
mddev->resync_max = MaxSector;
sysfs_notify(&mddev->kobj, NULL, "sync_completed");
wake_up(&resync_wait);
set_bit(MD_RECOVERY_DONE, &mddev->recovery);