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I mean there is already xfstests generic/405 for the situation.
Thin provision devices need to call dmsetup to setup.
I wonder If calling dmsetup in progs tests is acceptable or not.
If it is, I will do it.

Thanks,
Su

On Mon, Apr 9, 2018 at 9:25 PM, David Sterba <dste...@suse.cz> wrote:
> On Tue, Apr 03, 2018 at 04:39:45PM +0800, Su Yue wrote:
>> when mkfs.btrfs on a thin provision device which has very small
>> backing size and big virtual size, all code works well in
>> mkfs.btrfs until close_ctree() is called.
>> close_ctree() fails to sync device due to small backing size
>> while closing devices.
>> However, mkfs returns 0 in such situation which causes failure of
>> xfstests generic/405.
>>
>> So, let mkfs returns nonzero value if previous steps succeeded but
>> close_ctree() failed.
>> Then xfstests generic/405 passes now.
>>
>> Signed-off-by: Su Yue <suy.f...@cn.fujitsu.com>
>
> Applied, thanks. Can you please write a test for that?
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