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Subject: Re: linux-next: xfs metadata corruption since 30 March
From:   Qian Cai <cai@lca.pw>
In-Reply-To: <20200401044528.GE56958@magnolia>
Date:   Wed, 1 Apr 2020 09:54:08 -0400
Cc:     Chandan Rajendra <chandan@linux.ibm.com>,
        Christoph Hellwig <hch@lst.de>, linux-xfs@vger.kernel.org,
        LKML <linux-kernel@vger.kernel.org>
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To:     "Darrick J. Wong" <darrick.wong@oracle.com>
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> On Apr 1, 2020, at 12:45 AM, Darrick J. Wong <darrick.wong@oracle.com> =
wrote:
>=20
> On Wed, Apr 01, 2020 at 12:15:32AM -0400, Qian Cai wrote:
>>=20
>>=20
>>> On Apr 1, 2020, at 12:14 AM, Chandan Rajendra =
<chandan@linux.ibm.com> wrote:
>>>=20
>>> On Wednesday, April 1, 2020 3:27 AM Qian Cai wrote:=20
>>>> Ever since two days ago, linux-next starts to trigger xfs metadata =
corruption
>>>> during compilation workloads on both powerpc and arm64,
>>>=20
>>> Can you please provide the filesystem geometry information?
>>> You can get that by executing "xfs_info <mount-point>" command.
>>>=20
>=20
> Hmm.   Do the arm/ppc systems have 64k pages?  kconfigs might be a =
good
> starting place.  Also, does the xfs for-next branch exhibit this

Yes, 64k pages. The configs are in,

https://github.com/cailca/linux-mm

> problem, or is it just the big -next branch that Stephen Rothwell puts
> out?

The later.

>=20
> --D
>=20
>> =3D=3D arm64 =3D=3D
>> # xfs_info /home/
>> meta-data=3D/dev/mapper/rhel_hpe--apollo--cn99xx--11-home isize=3D512 =
   agcount=3D4, agsize=3D113568256 blks
>>         =3D                       sectsz=3D4096  attr=3D2, =
projid32bit=3D1
>>         =3D                       crc=3D1        finobt=3D1, =
sparse=3D1, rmapbt=3D0
>>         =3D                       reflink=3D1
>> data     =3D                       bsize=3D4096   blocks=3D454273024, =
imaxpct=3D5
>>         =3D                       sunit=3D0      swidth=3D0 blks
>> naming   =3Dversion 2              bsize=3D4096   ascii-ci=3D0, =
ftype=3D1
>> log      =3Dinternal log           bsize=3D4096   blocks=3D221813, =
version=3D2
>>         =3D                       sectsz=3D4096  sunit=3D1 blks, =
lazy-count=3D1
>> realtime =3Dnone                   extsz=3D4096   blocks=3D0, =
rtextents=3D0
>>=20
>>=20
>> =3D=3D powerpc =3D=3D
>> # xfs_info /home/
>> meta-data=3D/dev/mapper/rhel_ibm--p9wr--01-home isize=3D512    =
agcount=3D4, agsize=3D118489856 blks
>>         =3D                       sectsz=3D4096  attr=3D2, =
projid32bit=3D1
>>         =3D                       crc=3D1        finobt=3D1, =
sparse=3D1, rmapbt=3D0
>>         =3D                       reflink=3D1
>> data     =3D                       bsize=3D4096   blocks=3D473959424, =
imaxpct=3D5
>>         =3D                       sunit=3D0      swidth=3D0 blks
>> naming   =3Dversion 2              bsize=3D4096   ascii-ci=3D0, =
ftype=3D1
>> log      =3Dinternal log           bsize=3D4096   blocks=3D231425, =
version=3D2
>>         =3D                       sectsz=3D4096  sunit=3D1 blks, =
lazy-count=3D1
>> realtime =3Dnone                   extsz=3D4096   blocks=3D0, =
rtextents=3D0
>>=20
>> =3D=3D x86 (not yet reproduced)  =3D=3D
>> meta-data=3D/dev/mapper/rhel_hpe--dl380gen9--01-home isize=3D512    =
agcount=3D16, agsize=3D3283776 blks
>>         =3D                       sectsz=3D512   attr=3D2, =
projid32bit=3D1
>>         =3D                       crc=3D1        finobt=3D1, =
sparse=3D1, rmapbt=3D0
>>         =3D                       reflink=3D1
>> data     =3D                       bsize=3D4096   blocks=3D52540416, =
imaxpct=3D25
>>         =3D                       sunit=3D64     swidth=3D64 blks
>> naming   =3Dversion 2              bsize=3D4096   ascii-ci=3D0, =
ftype=3D1
>> log      =3Dinternal log           bsize=3D4096   blocks=3D25664, =
version=3D2
>>         =3D                       sectsz=3D512   sunit=3D0 blks, =
lazy-count=3D1
>> realtime =3Dnone                   extsz=3D4096   blocks=3D0, =
rtextents=3D0