diff options
| author | Song Liu <songliubraving@fb.com> | 2015-10-09 06:54:09 +0200 |
|---|---|---|
| committer | NeilBrown <neilb@suse.com> | 2015-11-01 03:48:29 +0100 |
| commit | a97b7896447a89749d9258fbb9d8c3faf48a7a4e (patch) | |
| tree | 4d1718f235e90e20c7385097c307d56d343689ba /drivers/md | |
| parent | raid5-cache: IO error handling (diff) | |
| download | linux-a97b7896447a89749d9258fbb9d8c3faf48a7a4e.tar.xz linux-a97b7896447a89749d9258fbb9d8c3faf48a7a4e.zip | |
MD: add new bit to indicate raid array with journal
If a raid array has journal feature bit set, add a new bit to indicate
this. If the array is started without journal disk existing, we know
there is something wrong.
Signed-off-by: Song Liu <songliubraving@fb.com>
Signed-off-by: Shaohua Li <shli@fb.com>
Signed-off-by: NeilBrown <neilb@suse.com>
Diffstat (limited to 'drivers/md')
| -rw-r--r-- | drivers/md/md.c | 10 | ||||
| -rw-r--r-- | drivers/md/md.h | 1 |
2 files changed, 8 insertions, 3 deletions
diff --git a/drivers/md/md.c b/drivers/md/md.c index e4e2731f7660..bca859a6e3fd 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -1667,6 +1667,8 @@ static int super_1_validate(struct mddev *mddev, struct md_rdev *rdev) set_bit(WriteMostly, &rdev->flags); if (le32_to_cpu(sb->feature_map) & MD_FEATURE_REPLACEMENT) set_bit(Replacement, &rdev->flags); + if (le32_to_cpu(sb->feature_map) & MD_FEATURE_JOURNAL) + set_bit(MD_HAS_JOURNAL, &mddev->flags); } else /* MULTIPATH are always insync */ set_bit(In_sync, &rdev->flags); @@ -1807,16 +1809,18 @@ retry: for (i=0; i<max_dev;i++) sb->dev_roles[i] = cpu_to_le16(MD_DISK_ROLE_FAULTY); + if (test_bit(MD_HAS_JOURNAL, &mddev->flags)) + sb->feature_map |= cpu_to_le32(MD_FEATURE_JOURNAL); + rdev_for_each(rdev2, mddev) { i = rdev2->desc_nr; if (test_bit(Faulty, &rdev2->flags)) sb->dev_roles[i] = cpu_to_le16(MD_DISK_ROLE_FAULTY); else if (test_bit(In_sync, &rdev2->flags)) sb->dev_roles[i] = cpu_to_le16(rdev2->raid_disk); - else if (test_bit(Journal, &rdev2->flags)) { + else if (test_bit(Journal, &rdev2->flags)) sb->dev_roles[i] = cpu_to_le16(MD_DISK_ROLE_JOURNAL); - sb->feature_map |= cpu_to_le32(MD_FEATURE_JOURNAL); - } else if (rdev2->raid_disk >= 0) + else if (rdev2->raid_disk >= 0) sb->dev_roles[i] = cpu_to_le16(rdev2->raid_disk); else sb->dev_roles[i] = cpu_to_le16(MD_DISK_ROLE_SPARE); diff --git a/drivers/md/md.h b/drivers/md/md.h index e14e667a20e9..2bea51edfab7 100644 --- a/drivers/md/md.h +++ b/drivers/md/md.h @@ -233,6 +233,7 @@ struct mddev { * md_ioctl checked on it. */ #define MD_JOURNAL_CLEAN 5 /* A raid with journal is already clean */ +#define MD_HAS_JOURNAL 6 /* The raid array has journal feature set */ int suspended; atomic_t active_io; |