linux-kernel - Re: [XFS] 2.6.29-rc2: XFS internal error XFS_WANT_CORRUPTED

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Message-ID: <20090120133521.GD10158@disturbed>
Date:	Wed, 21 Jan 2009 00:35:21 +1100
From:	Dave Chinner <david@...morbit.com>
To:	Christoph Hellwig <hch@...radead.org>
Cc:	Jacek Luczak <difrost.kernel@...il.com>,
	Eric Sandeen <sandeen@...deen.net>,
	LKML <linux-kernel@...r.kernel.org>,
	xfs mailing list <xfs@....sgi.com>
Subject: Re: [XFS] 2.6.29-rc2: XFS internal error XFS_WANT_CORRUPTED_GOTO

On Tue, Jan 20, 2009 at 06:49:06AM -0500, Christoph Hellwig wrote:
> On Tue, Jan 20, 2009 at 12:47:16PM +0100, Jacek Luczak wrote:
> > Christoph Hellwig pisze:
> > > I'm doing about half of my testing on 32 bit x86, and I couldn't
> > > reproduce the detailed receipe  in the kernel.org bugzilla yet.
> > > 
> > > Just curious:  do you have CONFIG_LBD set?
> > 
> > the answer is:
> > $ grep LBD .config
> > # CONFIG_LBD is not set
> 
> Ok, let me reproduce it without that set..

Good call, Christoph. I have a reproduce on ia32, CONFIG_LBD=n,
1k block size, 16 AGs in 4GB. Filesystem pre-prepared by
copying a build kernel onto it then 'make mrproper' to put
holes in it. Then, on boot:

dave@...-32:/mnt$ sudo mount /dev/sdb /mnt; cd /mnt
dave@...-32:/mnt$ cp /home/dave/linux-2.6.tar.gz . ; sync
dave@...-32:/mnt$ sudo xfs_bmap -v linux-2.6.tar.gz
linux-2.6.tar.gz:
 EXT: FILE-OFFSET       BLOCK-RANGE      AG AG-OFFSET         TOTAL
   0: [0..150271]:      92112..242383     0 (92112..242383)  150272
   1: [150272..346879]: 256188..452795    0 (256188..452795) 196608
   2: [346880..445183]: 906390..1004693   1 (382102..480405)  98304
   3: [445184..494335]: 770022..819173    1 (245734..294885)  49152
   4: [494336..543487]: 720870..770021    1 (196582..245733)  49152
   5: [543488..592639]: 671718..720869    1 (147430..196581)  49152
   6: [592640..641791]: 622566..671717    1 (98278..147429)   49152
   7: [641792..737023]: 1398498..1493729  2 (349922..445153)  95232
   8: [737024..781055]: 1353872..1397903  2 (305296..349327)  44032
   9: [781056..830207]: 1304720..1353871  2 (256144..305295)  49152
  10: [830208..879359]: 1255566..1304717  2 (206990..256141)  49152
  11: [879360..925367]: 1209558..1255565  2 (160982..206989)  46008
dave@...-32:/mnt$ > linux-2.6.tar.gz
Connection to xfs-32 closed.

I'll see if this is reproducable, and if it is I'll start
instrumenting in the morning during the LCA keynote. ;)

Cheers,

Dave.
-- 
Dave Chinner
david@...morbit.com
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