diff options
| author | Jes Sorensen <Jes.Sorensen@redhat.com> | 2015-09-16 16:20:05 +0200 |
|---|---|---|
| committer | NeilBrown <neilb@suse.com> | 2015-10-02 09:23:44 +0200 |
| commit | e8ff8bf09ff49733534ff3cee91bde030186055f (patch) | |
| tree | a88b4a7f0d402a2aefeecc97b752c13e931874f6 /drivers/md/raid1.c | |
| parent | md: drop null test before destroy functions (diff) | |
| download | linux-e8ff8bf09ff49733534ff3cee91bde030186055f.tar.xz linux-e8ff8bf09ff49733534ff3cee91bde030186055f.zip | |
md/raid1: Avoid raid1 resync getting stuck
close_sync() needs to set conf->next_resync to a large, but safe value
below MaxSector and use it to determine whether or not to set
start_next_window in wait_barrier()
Solution suggested by Neil Brown.
Reported-by: Nate Dailey <nate.dailey@stratus.com>
Tested-by: Xiao Ni <xni@redhat.com>
Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: NeilBrown <neilb@suse.com>
Diffstat (limited to '')
| -rw-r--r-- | drivers/md/raid1.c | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c index 5f4f5536f66f..049df6c4a8cc 100644 --- a/drivers/md/raid1.c +++ b/drivers/md/raid1.c @@ -881,8 +881,7 @@ static sector_t wait_barrier(struct r1conf *conf, struct bio *bio) } if (bio && bio_data_dir(bio) == WRITE) { - if (bio->bi_iter.bi_sector >= - conf->mddev->curr_resync_completed) { + if (bio->bi_iter.bi_sector >= conf->next_resync) { if (conf->start_next_window == MaxSector) conf->start_next_window = conf->next_resync + @@ -1516,7 +1515,7 @@ static void close_sync(struct r1conf *conf) conf->r1buf_pool = NULL; spin_lock_irq(&conf->resync_lock); - conf->next_resync = 0; + conf->next_resync = MaxSector - 2 * NEXT_NORMALIO_DISTANCE; conf->start_next_window = MaxSector; conf->current_window_requests += conf->next_window_requests; |