diff options
| author | NeilBrown <neilb@suse.de> | 2012-10-11 14:25:57 +1100 |
|---|---|---|
| committer | NeilBrown <neilb@suse.de> | 2012-10-11 14:25:57 +1100 |
| commit | 72f36d5972a166197036c1281963f6863c429bf2 (patch) | |
| tree | 9bf42eb456ea85126489dad2283ed0343d91172d /drivers/md/md.c | |
| parent | e56108d65f8705170d238858616728359542aebb (diff) | |
md: refine reporting of resync/reshape delays.
If 'resync_max' is set to 0 (as is often done when starting a
reshape, so the mdadm can remain in control during a sensitive
period), and if the reshape request is initially delayed because
another array using the same array is resyncing or reshaping etc,
when user-space cannot easily tell when the delay changes from being
due to a conflicting reshape, to being due to resync_max = 0.
So introduce a new state: (curr_resync == 3) to reflect this, make
sure it is visible both via /proc/mdstat and via the "sync_completed"
sysfs attribute, and ensure that the event transition from one delay
state to the other is properly notified.
Signed-off-by: NeilBrown <neilb@suse.de>
Diffstat (limited to 'drivers/md/md.c')
| -rw-r--r-- | drivers/md/md.c | 25 |
1 files changed, 18 insertions, 7 deletions
diff --git a/drivers/md/md.c b/drivers/md/md.c index 8d93f867adb..3c6eaab0b6c 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -4400,6 +4400,10 @@ sync_completed_show(struct mddev *mddev, char *page) if (!test_bit(MD_RECOVERY_RUNNING, &mddev->recovery)) return sprintf(page, "none\n"); + if (mddev->curr_resync == 1 || + mddev->curr_resync == 2) + return sprintf(page, "delayed\n"); + if (test_bit(MD_RECOVERY_SYNC, &mddev->recovery) || test_bit(MD_RECOVERY_RESHAPE, &mddev->recovery)) max_sectors = mddev->resync_max_sectors; @@ -6807,7 +6811,11 @@ static void status_resync(struct seq_file *seq, struct mddev * mddev) int scale; unsigned int per_milli; - resync = mddev->curr_resync - atomic_read(&mddev->recovery_active); + if (mddev->curr_resync <= 3) + resync = 0; + else + resync = mddev->curr_resync + - atomic_read(&mddev->recovery_active); if (test_bit(MD_RECOVERY_SYNC, &mddev->recovery) || test_bit(MD_RECOVERY_RESHAPE, &mddev->recovery)) @@ -7033,7 +7041,7 @@ static int md_seq_show(struct seq_file *seq, void *v) if (mddev->curr_resync > 2) { status_resync(seq, mddev); seq_printf(seq, "\n "); - } else if (mddev->curr_resync == 1 || mddev->curr_resync == 2) + } else if (mddev->curr_resync >= 1) seq_printf(seq, "\tresync=DELAYED\n "); else if (mddev->recovery_cp < MaxSector) seq_printf(seq, "\tresync=PENDING\n "); @@ -7423,8 +7431,11 @@ void md_do_sync(struct md_thread *thread) "md: resuming %s of %s from checkpoint.\n", desc, mdname(mddev)); mddev->curr_resync = j; - } + } else + mddev->curr_resync = 3; /* no longer delayed */ mddev->curr_resync_completed = j; + sysfs_notify(&mddev->kobj, NULL, "sync_completed"); + md_new_event(mddev); blk_start_plug(&plug); while (j < max_sectors) { @@ -7477,7 +7488,8 @@ void md_do_sync(struct md_thread *thread) break; j += sectors; - if (j>1) mddev->curr_resync = j; + if (j > 2) + mddev->curr_resync = j; mddev->curr_mark_cnt = io_sectors; if (last_check == 0) /* this is the earliest that rebuild will be @@ -7599,8 +7611,6 @@ static int remove_and_add_spares(struct mddev *mddev) int spares = 0; int removed = 0; - mddev->curr_resync_completed = 0; - rdev_for_each(rdev, mddev) if (rdev->raid_disk >= 0 && !test_bit(Blocked, &rdev->flags) && @@ -7791,6 +7801,7 @@ void md_check_recovery(struct mddev *mddev) /* Set RUNNING before clearing NEEDED to avoid * any transients in the value of "sync_action". */ + mddev->curr_resync_completed = 0; set_bit(MD_RECOVERY_RUNNING, &mddev->recovery); /* Clear some bits that don't mean anything, but * might be left set @@ -7804,7 +7815,7 @@ void md_check_recovery(struct mddev *mddev) /* no recovery is running. * remove any failed drives, then * add spares if possible. - * Spare are also removed and re-added, to allow + * Spares are also removed and re-added, to allow * the personality to fail the re-add. */ |