Re: [Bug 215261] New: [xfstests xfs/177] test still fails after merge f38a032b165d ("xfs: fix I_DONTCACHE")

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> xfs/177 - output mismatch (see /var/lib/xfstests/results//xfs/177.out.bad)
>     --- tests/xfs/177.out       2021-11-28 09:56:52.236830568 -0500
>     +++ /var/lib/xfstests/results//xfs/177.out.bad      2021-11-30
> 04:21:03.282699626 -0500
>     @@ -2,11 +2,14 @@
>      new file count is in range
>      inodes after creating files is in range
>      Round 1
>     -inodes after bulkstat is in range
>     +inodes after bulkstat has value of 102
>     +inodes after bulkstat is NOT in range 1023 .. 1033
>      inodes after expire is in range
>     ...
>     (Run 'diff -u /var/lib/xfstests/tests/xfs/177.out
> /var/lib/xfstests/results//xfs/177.out.bad'  to see the entire diff)
> Ran: xfs/177
> Failures: xfs/177
> Failed 1 of 1 tests
> 

I'm still looking into it, but I suspect this is an issue with the test itself.
In some occasions, the timer set for xfssyncd_centisecs is too short, and by the
time the test collect the amount of cached objects, the system is already
reclaiming unused objects, so, the test 'finds' fewer cached objects than it
expects.

> [2]
> FSTYP         -- xfs (debug)
> PLATFORM      -- Linux/aarch64 hpe-apollo-cnxxxx-xx-vm-xx 5.16.0-rc2+ #1 SMP
> Sun Nov 28 06:10:24 EST 2021
> MKFS_OPTIONS  -- -f -m crc=1,finobt=1,rmapbt=0,reflink=1,bigtime=1,inobtcount=1
> /dev/vda3
> MOUNT_OPTIONS -- -o context=system_u:object_r:root_t:s0 /dev/vda3
> /mnt/xfstests/scratch
> 
> xfs/177 - output mismatch (see /var/lib/xfstests/results//xfs/177.out.bad)
>     --- tests/xfs/177.out       2021-11-28 10:04:49.415509327 -0500
>     +++ /var/lib/xfstests/results//xfs/177.out.bad      2021-11-29
> 04:47:32.148868974 -0500
>     @@ -2,7 +2,8 @@
>      new file count is in range
>      inodes after creating files is in range
>      Round 1
>     -inodes after bulkstat is in range
>     +inodes after bulkstat has value of 575
>     +inodes after bulkstat is NOT in range 1023 .. 1033
>      inodes after expire is in range
>     ...
>     (Run 'diff -u /var/lib/xfstests/tests/xfs/177.out
> /var/lib/xfstests/results//xfs/177.out.bad'  to see the entire diff)
> Ran: xfs/177
> Failures: xfs/177
> Failed 1 of 1 tests
> 
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-- 
Carlos




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