linux-kernel - Re: [xfs-masters] Re: 2.6.18-rc6-mm2

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Date:	Thu, 14 Sep 2006 11:29:51 +0200
From:	"Michal Piotrowski" <michal.k.k.piotrowski@...il.com>
To:	"David Chinner" <dgc@....com>
Cc:	linux-kernel@...r.kernel.org, xfs-masters@....sgi.com
Subject: Re: [xfs-masters] Re: 2.6.18-rc6-mm2

On 14/09/06, David Chinner <dgc@....com> wrote:
> On Thu, Sep 14, 2006 at 10:50:42AM +0200, Michal Piotrowski wrote:
> > On 14/09/06, Michal Piotrowski <michal.k.k.piotrowski@...il.com> wrote:
> > >David Chinner wrote:
> > >> On Wed, Sep 13, 2006 at 11:43:32AM +0200, Michal Piotrowski wrote:
> > >>> On 13/09/06, David Chinner <dgc@....com> wrote:
> > >>>> I've booted 2.6.18-rc6-mm2 and mounted and unmounted several xfs
> > >>>> filesystems. I'm currently running xfsqa on it, and I haven't seen
> > >>>> any failures on unmount yet.
> > >>>>
> > >>>> That test case would be really handy, Michal.
> > >>> http://www.stardust.webpages.pl/files/mm/2.6.18-rc6-mm2/test_mount_fs.sh
> > >>>
> > >>> ls -hs /home/fs-farm/
> > >>> total 3.6G
> > >>> 513M ext2.img  513M ext4.img  513M reiser3.img  513M xfs.img
> > >>> 513M ext3.img  513M jfs.img   513M reiser4.img
> > >>
> > >> Ok, so you're using loopback and mounting one of each filesystem, then
> > >> unmounting them in the same order. I have mounted and unmounted an
> > >> XFS filesystem in isolation in exactly the same way you have been, but
> > >> I haven't seen any failures.
> > >>
> > >> Can you rerun the test with just XFS in your script and see if you
> > >> see any failures? If you don't see any failures, can you add each
> > >> filesystem back in one at a time until you see failures again?
> > >
> > >
> > >I still get an oops (with xfs only). Maybe it's file system image problem.
> > >
> > >xfs_info /mnt/fs-farm/xfs/
> > >meta-data=/dev/loop1             isize=256    agcount=8, agsize=16384 blks
> > >         =                       sectsz=512
> > >data     =                       bsize=4096   blocks=131072, imaxpct=25
> > >         =                       sunit=0      swidth=0 blks, unwritten=1
> > >naming   =version 2              bsize=4096
> > >log      =internal               bsize=4096   blocks=1200, version=1
> > >         =                       sectsz=512   sunit=0 blks
> > >realtime =none                   extsz=65536  blocks=0, rtextents=0
> >
> > Can I send to you this fs image? It's only 246KB bz2 file.
>
> I've downloaded it, and I don't see a panic on that fs at all.
> I've got it sitting in a tight loop mounting and unmounting the
> image you sent me, and nothing has gone wrong. I don't think it's
> a corrupted filesystem problem - it seems more like a memory corruption
> problem to me.

I'm checking memory from time to time with memtest86.

>
> What arch are you running on and what compiler are you using?

gcc -v
Using built-in specs.
Target: i386-redhat-linux
Configured with: ../configure --prefix=/usr --mandir=/usr/share/man
--infodir=/usr/share/info --enable-shared --enable-threads=posix
--enable-checking=release --with-system-zlib --enable-__cxa_atexit
--disable-libunwind-exceptions --enable-libgcj-multifile
--enable-languages=c,c++,objc,obj-c++,java,fortran,ada
--enable-java-awt=gtk --disable-dssi
--with-java-home=/usr/lib/jvm/java-1.4.2-gcj-1.4.2.0/jre
--with-cpu=generic --host=i386-redhat-linux
Thread model: posix
gcc version 4.1.1 20060525 (Red Hat 4.1.1-1)

I'll build system with gcc 3.4

> Can you try 2.6.18-rc6 and see if it panics like this on your
> machine?

2.6.18-rc7 works fine.

> there is little difference in xfs between -rc6 and -rc6-mm2
> so it would be good to know if this is a problem isolated to
> the -mm tree or not....
>
> Cheers,
>
> Dave.
> --
> Dave Chinner
> Principal Engineer
> SGI Australian Software Group
>

Regards,
Michal

-- 
Michal K. K. Piotrowski
LTG - Linux Testers Group
(http://www.stardust.webpages.pl/ltg/)
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