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[ Upstream commit 19eb1650afeb1aa86151f61900e9e5f1de5d8d02 ]
If a thinpool set fail_io while suspending, resume will fail with:
device-mapper: resume ioctl on vg-thinpool failed: Invalid argument
The thin-pool also can't be removed if an in-flight bio is in the
deferred list.
This can be easily reproduced using:
echo "offline" > /sys/block/sda/device/state
dd if=/dev/zero of=/dev/mapper/thin bs=4K count=1
dmsetup suspend /dev/mapper/pool
mkfs.ext4 /dev/mapper/thin
dmsetup resume /dev/mapper/pool
The root cause is maybe_resize_data_dev() will check fail_io and return
error before called dm_resume.
Fix this by adding FAIL mode check at the end of pool_preresume().
Cc: stable@vger.kernel.org
Fixes: da105ed5fd7e ("dm thin metadata: introduce dm_pool_abort_metadata")
Signed-off-by: Luo Meng <luomeng12@huawei.com>
Signed-off-by: Mike Snitzer <snitzer@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
d06a7e2049