Re: fstest failure due to filesystem size for 16k, 32k and 64k FSB

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On Wed, Jan 31, 2024 at 10:28:58AM -0800, Darrick J. Wong wrote:
> On Wed, Jan 31, 2024 at 03:05:48PM +0100, Pankaj Raghav (Samsung) wrote:
> > > > 
> > > > Thanks for the reply. So we can have a small `if` conditional block for xfs
> > > > to have fs size = 500M in generic test cases.
> > > 
> > > I'd suggest creating a helper where you pass in the fs size you want and
> > > it rounds that up to the minimum value.  That would then get passed to
> > > _scratch_mkfs_sized or _scsi_debug_get_dev.
> > > 
> > > (testing this as we speak...)
> > 
> > I would be more than happy if you send a patch for
> > this but I also know you are pretty busy, so let me know if you want me
> > to send a patch for this issue.
> > 
> > You had something like this in mind?
> 
> Close, but something more like below.  It's not exhaustive; it merely
> makes the xfs 64k bs tests pass:
> 

I still see some errors in generic/081 and generic/108 that have been
modified in your patch with the same issue.

This is the mkfs option I am using:
-m reflink=1,rmapbt=1, -i sparse=1, -b size=64k

And with that:
$ ./check -s 64k generic/042 generic/081 generic/108 generic/704 generic/730 generic/731 xfs/279

...
generic/081.out.bad:
 +max log size 1732 smaller than min log size 2028, filesystem is too small
...
generic/108.out.bad:
+max log size 1876 smaller than min log size 2028, filesystem is too small
...
SECTION       -- 64k
=========================
Ran: generic/042 generic/081 generic/108 generic/704 generic/730 generic/731 xfs/279
Failures: generic/081 generic/108
Failed 2 of 7 tests

**Increasing the size** to 600M fixes all the test in 64k system.

The patch itself including `_small_fs_size_mb()` looks good to me.

> From: Darrick J. Wong <djwong@xxxxxxxxxx>
> Subject: [PATCH] misc: fix test that fail formatting with 64k blocksize
> 
> There's a bunch of tests that fail the formatting step when the test run
> is configured to use XFS with a 64k blocksize.  This happens because XFS
> doesn't really support that combination due to minimum log size
> constraints.  Fix the test to format larger devices in that case.
> 
> Signed-off-by: Darrick J. Wong <djwong@xxxxxxxxxx>
> ---
>  common/rc         |   29 +++++++++++++++++++++++++++++
>  tests/generic/042 |    9 +--------
>  tests/generic/081 |    7 +++++--
>  tests/generic/108 |    6 ++++--
>  tests/generic/704 |    3 ++-
>  tests/generic/730 |    3 ++-
>  tests/generic/731 |    3 ++-
>  tests/xfs/279     |    7 ++++---

As I indicated at the start of the thread, we need to also fix:
generic/455 generic/457 generic/482 shared/298

Thanks!
--
Pankaj Raghav




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