diff options
| author | Shaohua Li <shli@fb.com> | 2016-01-07 01:37:14 +0300 |
|---|---|---|
| committer | NeilBrown <neilb@suse.com> | 2016-01-14 03:49:43 +0300 |
| commit | 87d4d91616e4db9b8293ba9d9e5a2f3f0d0c8aa6 (patch) | |
| tree | de66672eef0323ee4f5bce959a0ba86a646362b6 | |
| parent | a62ab49eb502a07814f9942770893118c6281223 (diff) | |
| download | linux-87d4d91616e4db9b8293ba9d9e5a2f3f0d0c8aa6.tar.xz | |
MD: add journal with array suspended
Hot add journal disk in recovery thread context brings a lot of trouble
as IO could be running. Unlike spare disk hot add, adding journal disk
with array suspended makes more sense and implmentation is much easier.
Signed-off-by: Shaohua Li <shli@fb.com>
Signed-off-by: NeilBrown <neilb@suse.com>
| -rw-r--r-- | drivers/md/md.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/md/md.c b/drivers/md/md.c index 29a4bbf62be5..8753dee3983b 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -2455,15 +2455,20 @@ static int add_bound_rdev(struct md_rdev *rdev) { struct mddev *mddev = rdev->mddev; int err = 0; + bool add_journal = test_bit(Journal, &rdev->flags); - if (!mddev->pers->hot_remove_disk) { + if (!mddev->pers->hot_remove_disk || add_journal) { /* If there is hot_add_disk but no hot_remove_disk * then added disks for geometry changes, * and should be added immediately. */ super_types[mddev->major_version]. validate_super(mddev, rdev); + if (add_journal) + mddev_suspend(mddev); err = mddev->pers->hot_add_disk(mddev, rdev); + if (add_journal) + mddev_resume(mddev); if (err) { unbind_rdev_from_array(rdev); export_rdev(rdev); |