Re: NFSD crashes with oops

[Bas van der Vlies <basv@sara.nl>]

Trond Myklebust wrote:
> On Wed, 2006-03-08 at 15:08 +0100, Bas van der Vlies wrote:
>> Bas van der Vlies wrote:
>>> At our side we have an 4 node GFS cluster. The nodes act as an 
>>> NFS-server to +/- 640 nodes.
>>>
>> Just upgraded to 2.6.16-rc5 and still nfsd crashes. With more debug 
>> output. So some code is fixed in this release. Nfsd crashes instead
>> of 128 we now have 127, nfsd still runing now.
>>
>> == Crash Output ==
>> Unable to handle kernel NULL pointer dereference at virtual address 00000038
>>   printing eip:
>> f89a4be3
>> *pde = 37809001
>> *pte = 00000000
>> Oops: 0000 [#1]
>> SMP
>> Modules linked in: lock_dlm dlm cman dm_round_robin dm_multipath sg 
>> ide_floppy ide_cd cdrom qla2xxx siimage piix e1000 gfs lock_harness dm_mod
>> CPU:    0
>> EIP:    0060:[<f89a4be3>]    Tainted: GF     VLI
>> EFLAGS: 00010246   (2.6.16-rc5-sara3 #1)
>> EIP is at gfs_create+0x6f/0x153 [gfs]
> 
> This is Oopsing in the GFS code, not nfsd.
> 
Thanks for the info. Just for my knowledge. The nfsd crashes because 
there is an error in the gfs_create code?

The problem is that gfs-filesystems are still accesible and if we are
lucky we have on thread less else the load on the gfs-fileserver is sky 
high and it does not respond to the nfs-requests anymore. So all nfsd 
processes are locked.

Regards


-- 
--
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*                                                                  *
*  Bas van der Vlies                     e-mail: basv@sara.nl      *
*  SARA - Academic Computing Services    phone:  +31 20 592 8012   *
*  Kruislaan 415                         fax:    +31 20 6683167    *
*  1098 SJ Amsterdam                                               *
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