linux-kernel - Re: [3.10-rc6] WARNING: at fs/btrfs/inode.c:7961 btrfs_destroy

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Message-ID: <20130617185810.GA13370@redhat.com>
Date:	Mon, 17 Jun 2013 14:58:10 -0400
From:	Dave Jones <davej@...hat.com>
To:	Chris Mason <chris.mason@...ionio.com>
Cc:	Linux Kernel <linux-kernel@...r.kernel.org>,
	linux-btrfs@...r.kernel.org
Subject: Re: [3.10-rc6] WARNING: at fs/btrfs/inode.c:7961
 btrfs_destroy_inode+0x265/0x2e0 [btrfs]()

On Mon, Jun 17, 2013 at 02:42:27PM -0400, Chris Mason wrote:
 > Quoting Dave Jones (2013-06-17 14:20:06)
 > > On Mon, Jun 17, 2013 at 01:39:42PM -0400, Chris Mason wrote:
 > >  > Quoting Dave Jones (2013-06-17 09:49:55)
 > >  > > Hit this while running this script in a loop..
 > >  > > https://github.com/kernelslacker/io-tests/blob/master/setup.sh
 > >  > > [34385.251507] ------------[ cut here ]------------
 > >  > > [34385.254068] WARNING: at fs/btrfs/inode.c:7961 btrfs_destroy_inode+0x265/0x2e0 [btrfs]()
 > >  > 
 > >  > Thanks Dave, how long did you have to run the script to trigger it?
 > >  > 
 > >  > -chris
 > > 
 > > Judging by the timestamp, about 9 hours.  This is on a 3 disk (sata)
 > > (oldish) quad opteron. Might repro faster on a more modern machine.
 > 
 > Exactly how did you run it?  I want to make sure I'm matching your
 > config.

while [ 1 ];
do
  setup.sh
done

You'll need to set DISK1 etc variables at the top of the script to point to
at least 3 disks for it to scribble over.

you'll also need fsx and fsstress in /usr/local/bin.

Think that's all.

	Dave

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