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| author | Jonathan Brassow <jbrassow@redhat.com> | 2013-06-25 08:23:59 +0200 |
|---|---|---|
| committer | NeilBrown <neilb@suse.de> | 2013-06-26 04:38:24 +0200 |
| commit | c4a39551451666229b4ea5e8aae8ca0131d00665 (patch) | |
| tree | e14b0de074da6e062275795b6530e5661d7c5acf /drivers/md/md.c | |
| parent | md: fix buglet in RAID5 -> RAID0 conversion. (diff) | |
| download | linux-c4a39551451666229b4ea5e8aae8ca0131d00665.tar.xz linux-c4a39551451666229b4ea5e8aae8ca0131d00665.zip | |
MD: Remember the last sync operation that was performed
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>
Diffstat (limited to 'drivers/md/md.c')
| -rw-r--r-- | drivers/md/md.c | 29 |
1 files changed, 21 insertions, 8 deletions
diff --git a/drivers/md/md.c b/drivers/md/md.c index 26f9452ea61c..dddc87bcf64a 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -521,6 +521,7 @@ void mddev_init(struct mddev *mddev) init_waitqueue_head(&mddev->recovery_wait); mddev->reshape_position = MaxSector; mddev->reshape_backwards = 0; + mddev->last_sync_action = "none"; mddev->resync_min = 0; mddev->resync_max = MaxSector; mddev->level = LEVEL_NONE; @@ -4272,6 +4273,17 @@ action_store(struct mddev *mddev, const char *page, size_t len) return len; } +static struct md_sysfs_entry md_scan_mode = +__ATTR(sync_action, S_IRUGO|S_IWUSR, action_show, action_store); + +static ssize_t +last_sync_action_show(struct mddev *mddev, char *page) +{ + return sprintf(page, "%s\n", mddev->last_sync_action); +} + +static struct md_sysfs_entry md_last_scan_mode = __ATTR_RO(last_sync_action); + static ssize_t mismatch_cnt_show(struct mddev *mddev, char *page) { @@ -4280,10 +4292,6 @@ mismatch_cnt_show(struct mddev *mddev, char *page) atomic64_read(&mddev->resync_mismatches)); } -static struct md_sysfs_entry md_scan_mode = -__ATTR(sync_action, S_IRUGO|S_IWUSR, action_show, action_store); - - static struct md_sysfs_entry md_mismatches = __ATTR_RO(mismatch_cnt); static ssize_t @@ -4686,6 +4694,7 @@ static struct attribute *md_default_attrs[] = { static struct attribute *md_redundancy_attrs[] = { &md_scan_mode.attr, + &md_last_scan_mode.attr, &md_mismatches.attr, &md_sync_min.attr, &md_sync_max.attr, @@ -7329,7 +7338,7 @@ void md_do_sync(struct md_thread *thread) sector_t last_check; int skipped = 0; struct md_rdev *rdev; - char *desc; + char *desc, *action = NULL; struct blk_plug plug; /* just incase thread restarts... */ @@ -7339,17 +7348,21 @@ void md_do_sync(struct md_thread *thread) return; if (test_bit(MD_RECOVERY_SYNC, &mddev->recovery)) { - if (test_bit(MD_RECOVERY_CHECK, &mddev->recovery)) + if (test_bit(MD_RECOVERY_CHECK, &mddev->recovery)) { desc = "data-check"; - else if (test_bit(MD_RECOVERY_REQUESTED, &mddev->recovery)) + action = "check"; + } else if (test_bit(MD_RECOVERY_REQUESTED, &mddev->recovery)) { desc = "requested-resync"; - else + action = "repair"; + } else desc = "resync"; } else if (test_bit(MD_RECOVERY_RESHAPE, &mddev->recovery)) desc = "reshape"; else desc = "recovery"; + mddev->last_sync_action = action ?: desc; + /* we overload curr_resync somewhat here. * 0 == not engaged in resync at all * 2 == checking that there is no conflict with another sync |