linux-kernel - Re: linux-next: xfs metadata corruption since 30 March

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Date:   Wed, 1 Apr 2020 09:54:08 -0400
From:   Qian Cai <cai@....pw>
To:     "Darrick J. Wong" <darrick.wong@...cle.com>
Cc:     Chandan Rajendra <chandan@...ux.ibm.com>,
        Christoph Hellwig <hch@....de>, linux-xfs@...r.kernel.org,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: linux-next: xfs metadata corruption since 30 March



> On Apr 1, 2020, at 12:45 AM, Darrick J. Wong <darrick.wong@...cle.com> wrote:
> 
> On Wed, Apr 01, 2020 at 12:15:32AM -0400, Qian Cai wrote:
>> 
>> 
>>> On Apr 1, 2020, at 12:14 AM, Chandan Rajendra <chandan@...ux.ibm.com> wrote:
>>> 
>>> On Wednesday, April 1, 2020 3:27 AM Qian Cai wrote: 
>>>> Ever since two days ago, linux-next starts to trigger xfs metadata corruption
>>>> during compilation workloads on both powerpc and arm64,
>>> 
>>> Can you please provide the filesystem geometry information?
>>> You can get that by executing "xfs_info <mount-point>" command.
>>> 
> 
> 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.

> 
> --D
> 
>> == arm64 ==
>> # xfs_info /home/
>> meta-data=/dev/mapper/rhel_hpe--apollo--cn99xx--11-home isize=512    agcount=4, agsize=113568256 blks
>>         =                       sectsz=4096  attr=2, projid32bit=1
>>         =                       crc=1        finobt=1, sparse=1, rmapbt=0
>>         =                       reflink=1
>> data     =                       bsize=4096   blocks=454273024, imaxpct=5
>>         =                       sunit=0      swidth=0 blks
>> naming   =version 2              bsize=4096   ascii-ci=0, ftype=1
>> log      =internal log           bsize=4096   blocks=221813, version=2
>>         =                       sectsz=4096  sunit=1 blks, lazy-count=1
>> realtime =none                   extsz=4096   blocks=0, rtextents=0
>> 
>> 
>> == powerpc ==
>> # xfs_info /home/
>> meta-data=/dev/mapper/rhel_ibm--p9wr--01-home isize=512    agcount=4, agsize=118489856 blks
>>         =                       sectsz=4096  attr=2, projid32bit=1
>>         =                       crc=1        finobt=1, sparse=1, rmapbt=0
>>         =                       reflink=1
>> data     =                       bsize=4096   blocks=473959424, imaxpct=5
>>         =                       sunit=0      swidth=0 blks
>> naming   =version 2              bsize=4096   ascii-ci=0, ftype=1
>> log      =internal log           bsize=4096   blocks=231425, version=2
>>         =                       sectsz=4096  sunit=1 blks, lazy-count=1
>> realtime =none                   extsz=4096   blocks=0, rtextents=0
>> 
>> == x86 (not yet reproduced)  ==
>> meta-data=/dev/mapper/rhel_hpe--dl380gen9--01-home isize=512    agcount=16, agsize=3283776 blks
>>         =                       sectsz=512   attr=2, projid32bit=1
>>         =                       crc=1        finobt=1, sparse=1, rmapbt=0
>>         =                       reflink=1
>> data     =                       bsize=4096   blocks=52540416, imaxpct=25
>>         =                       sunit=64     swidth=64 blks
>> naming   =version 2              bsize=4096   ascii-ci=0, ftype=1
>> log      =internal log           bsize=4096   blocks=25664, version=2
>>         =                       sectsz=512   sunit=0 blks, lazy-count=1
>> realtime =none                   extsz=4096   blocks=0, rtextents=0