Re: [Fail] generic/530 check failed on overlay

["Darrick J. Wong" <darrick.wong@oracle.com>]

On Wed, May 08, 2019 at 03:30:11PM +0800, JeffleXu wrote:
> When I run "./check -overlay generic/530", it failed with following log
> 
> 
> ```
> 
> generic/530 1s ... - output mismatch (see
> /root/xfstests/results//generic/530.out.bad)
>     --- tests/generic/530.out   2019-05-07 16:18:55.951796117 +0800
>     +++ /root/xfstests/results//generic/530.out.bad 2019-05-08
> 14:55:30.976816701 +0800
>     @@ -1,2 +1,3 @@
>      QA output created by 530
>     +shutdown: Inappropriate ioctl for device

Odd... I would've thought the _require_scratch_shutdown would have
stopped this test?  What's the underlying filesystem?

--D

>      silence is golden
>     ...
> 
> ```
> 
> 
> xfstests version: 1.1.1.1
> 
> kernel: linux 4.19
> 
> the commit that imports generic/530: e6703b90
> 
> https://git.kernel.org/pub/scm/fs/xfs/xfstests-dev.git/commit/?id=e6703b903a5025b3eccac758f5bdd8e847f62c39
> 
> 
> 
> I find that the error is due to the following snippet in
> src/t_open_tmpfiles.c
> 
> 
> ```c
> 
> ret = ioctl(min_fd, XFS_IOC_GOINGDOWN, &flag);
> if (ret) {
>     perror("shutdown");
>     exit(2);
> }
> 
> ```
> 
> 
> XFS_IOC_GOINGDOWN is specifically defined in XFS filesystem, while it is not
> 
> supported in overlay filesystem.
> 
> 
> In my understanding, test cases in "tests/generic" should be generic for all
> 
> filesystem types, and the XFS_IOC_GOINGDOWN macro used by generic/530 is
> 
> obviously against this rule. Or maybe I missed something important and would
> 
> approciate if someone could give me some indication.
> 
> 
> thx
>