Re: Immutable biovecs, dio rewrite

[Kent Overstreet]

On Tue, Jun 11, 2013 at 03:20:12PM +1000, Dave Chinner wrote:
> Please test with XFS and CONFIG_XFS_DEBUG=y - xfstests will stress
> the dio subsystem a lot more when it is run on XFS. Indeed, xfstests
> generic/013 assert fails almost immediately with:

Thanks - I haven't used xfstests much before. This one turned out to be
an easy fix, but once I turned on CONFIG_XFS_DEBUG I hit something else
I hadn't seen before:

[ 1343.482366] XFS (sdb2): Corruption detected. Unmount and run xfs_repair
[ 1343.482425] XFS (sdb2): bad inode magic/vsn daddr 64 #8 (magic=5858)
[ 1343.482482] XFS: Assertion failed: 0, file: /home/kent/linux/fs/xfs/xfs_inode.c, line: 417
[ 1343.482558] ------------[ cut here ]------------
[ 1343.482611] kernel BUG at /home/kent/linux/fs/xfs/xfs_message.c:108!

This one looks weirder - any thoughts on what might cause _that_?

(Don't spend any time on it, I haven't tried to debug it besides glancing at
the relevant xfs code - just curious if you have any pointers)
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