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MD: Remember the last sync operation that was performed

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MD:  Remember the last sync operation that was performed

This patch adds a field to the mddev structure to track the last
sync operation that was performed.  This is especially useful when
it comes to what is recorded in mismatch_cnt in sysfs.  If the
last operation was "data-check", then it reports the number of
descrepancies found by the user-initiated check.  If it was a
"repair" operation, then it is reporting the number of
descrepancies repaired.  etc.

Signed-off-by: Jonathan Brassow <jbrassow@redhat.com>
Signed-off-by: NeilBrown <neilb@suse.de>
This commit is contained in:
Jonathan Brassow
2013-06-25 01:23:59 -05:00
committed by NeilBrown
parent eea136d69f
commit c4a3955145
4 changed files with 32 additions and 9 deletions
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3
drivers/md/dm-raid.c
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@@ -1388,6 +1388,7 @@ static void raid_status(struct dm_target *ti, status_type_t type,
* performing a "check" of the array.
*/
DMEMIT(" %llu",
(strcmp(rs->md.last_sync_action, "check")) ? 0 :
(unsigned long long)
atomic64_read(&rs->md.resync_mismatches));
break;
@@ -1651,7 +1652,7 @@ static void raid_resume(struct dm_target *ti)
static struct target_type raid_target = {
.name = "raid",
.version = {1, 5, 1},
.version = {1, 5, 2},
.module = THIS_MODULE,
.ctr = raid_ctr,
.dtr = raid_dtr,