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| author | Yufen Yu <yuyufen@huawei.com> | 2019-09-03 21:12:41 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-10-05 13:09:54 +0200 |
| commit | f1db75622996af402deea9c018deb8e869ce7548 (patch) | |
| tree | c1b50ce731b615c432e4b517d3528d7b6a45deb1 | |
| parent | 76cf93f04c3dedc29660fed2c26fdbc21f604725 (diff) | |
| download | linux-stable-f1db75622996af402deea9c018deb8e869ce7548.tar.gz linux-stable-f1db75622996af402deea9c018deb8e869ce7548.tar.bz2 linux-stable-f1db75622996af402deea9c018deb8e869ce7548.zip | |
md/raid1: fail run raid1 array when active disk less than one
[ Upstream commit 07f1a6850c5d5a65c917c3165692b5179ac4cb6b ]
When run test case:
mdadm -CR /dev/md1 -l 1 -n 4 /dev/sd[a-d] --assume-clean --bitmap=internal
mdadm -S /dev/md1
mdadm -A /dev/md1 /dev/sd[b-c] --run --force
mdadm --zero /dev/sda
mdadm /dev/md1 -a /dev/sda
echo offline > /sys/block/sdc/device/state
echo offline > /sys/block/sdb/device/state
sleep 5
mdadm -S /dev/md1
echo running > /sys/block/sdb/device/state
echo running > /sys/block/sdc/device/state
mdadm -A /dev/md1 /dev/sd[a-c] --run --force
mdadm run fail with kernel message as follow:
[ 172.986064] md: kicking non-fresh sdb from array!
[ 173.004210] md: kicking non-fresh sdc from array!
[ 173.022383] md/raid1:md1: active with 0 out of 4 mirrors
[ 173.022406] md1: failed to create bitmap (-5)
In fact, when active disk in raid1 array less than one, we
need to return fail in raid1_run().
Reviewed-by: NeilBrown <neilb@suse.de>
Signed-off-by: Yufen Yu <yuyufen@huawei.com>
Signed-off-by: Song Liu <songliubraving@fb.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
| -rw-r--r-- | drivers/md/raid1.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c index 54010675df9a..6929d110d804 100644 --- a/drivers/md/raid1.c +++ b/drivers/md/raid1.c @@ -3105,6 +3105,13 @@ static int raid1_run(struct mddev *mddev) !test_bit(In_sync, &conf->mirrors[i].rdev->flags) || test_bit(Faulty, &conf->mirrors[i].rdev->flags)) mddev->degraded++; + /* + * RAID1 needs at least one disk in active + */ + if (conf->raid_disks - mddev->degraded < 1) { + ret = -EINVAL; + goto abort; + } if (conf->raid_disks - mddev->degraded == 1) mddev->recovery_cp = MaxSector; @@ -3138,8 +3145,12 @@ static int raid1_run(struct mddev *mddev) ret = md_integrity_register(mddev); if (ret) { md_unregister_thread(&mddev->thread); - raid1_free(mddev, conf); + goto abort; } + return 0; + +abort: + raid1_free(mddev, conf); return ret; } |