diff options
| author | NeilBrown <neilb@suse.com> | 2017-10-17 05:24:09 +0200 |
|---|---|---|
| committer | Shaohua Li <shli@fb.com> | 2017-11-02 05:32:18 +0100 |
| commit | 230b55fa8d64007339319539f8f8e68114d08529 (patch) | |
| tree | a92153407e424000f93384e987a4dc0ffa77dfe0 /drivers/md/md.c | |
| parent | raid5: Set R5_Expanded on parity devices as well as data. (diff) | |
| download | linux-230b55fa8d64007339319539f8f8e68114d08529.tar.xz linux-230b55fa8d64007339319539f8f8e68114d08529.zip | |
md: forbid a RAID5 from having both a bitmap and a journal.
Having both a bitmap and a journal is pointless.
Attempting to do so can corrupt the bitmap if the journal
replay happens before the bitmap is initialized.
Rather than try to avoid this corruption, simply
refuse to allow arrays with both a bitmap and a journal.
So:
- if raid5_run sees both are present, fail.
- if adding a bitmap finds a journal is present, fail
- if adding a journal finds a bitmap is present, fail.
Cc: stable@vger.kernel.org (4.10+)
Signed-off-by: NeilBrown <neilb@suse.com>
Tested-by: Joshua Kinard <kumba@gentoo.org>
Acked-by: Joshua Kinard <kumba@gentoo.org>
Signed-off-by: Shaohua Li <shli@fb.com>
Diffstat (limited to 'drivers/md/md.c')
| -rw-r--r-- | drivers/md/md.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/md/md.c b/drivers/md/md.c index 97afb28c6f51..6f25e3f1a1cf 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -6362,7 +6362,7 @@ static int add_new_disk(struct mddev *mddev, mdu_disk_info_t *info) break; } } - if (has_journal) { + if (has_journal || mddev->bitmap) { export_rdev(rdev); return -EBUSY; } |