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Date: Fri, 18 Jul 2008 11:46:44 +0200
From: Kris Kennaway <kris@FreeBSD.org>
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To: Lothar Braun <lothar@lobraun.de>
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Cc: Attilio Rao <attilio@freebsd.org>, freebsd-current@freebsd.org
Subject: Re: panic: __lockmgr_args: unknown lockmgr request 0x0
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Lothar Braun wrote:
> Hi,
> 
> Attilio Rao wrote:
>> 2008/7/17, Lothar Braun <lothar@lobraun.de>:
> 
>> can you try the following patch:
>> http://www.freebsd.org/~attilio/xfs.diff
> 
> The patch makes the panic disappear. But there seems to be a deadlock 
> instead. Every access on the partition does block. I did
> 
> mkfs.xfs /dev/ad8s4
> mount -t xfs /dev/ad8s4 /home
> mkdir /home/lothar
> chown lothar:lothar /home/lothar -> blocks
> 
> dmesg says:
> 
> SGI XFS with large block numbers, tracing, no debug enabled
> fsname '/dev/ad8s4' logname '' rtname ''
> flags 0x200000 sunit 0 swidth 0 logbufs -1 logbufsize -1
> xfs_setsize_buftarg NI 0xc692d420
> XFS mounting filesystem /dev/ad8s4
> Ending clean XFS mount for filesystem: /dev/ad8s4
> xfs_iunpin: REC RECABLE ip 0xc6f89d38
> xfs_iunpin: REC RECABLE ip 0xc6f8a000
> xfs_iflush: ip 0xc6f89d38 i_ino 131
> 
> 
> I'll recompile the kernel with INVARIANTS and WITNESS enabled in order 
> to get more information about the problem.

And DEBUG_LOCKS and DEBUG_VFS_LOCKS please :)

Kris