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RE: [Linux-cluster]GFS Problem



The storage is fronted by a switch, the SCSI errors occur after the
Queue_Full warning which seems to initiate the problem.  In this context,
what does Queue_Full mean? 

-----Original Message-----
From: linux-cluster-bounces redhat com
[mailto:linux-cluster-bounces redhat com] On Behalf Of Michael Conrad Tadpol
Tilstra
Sent: Wednesday, May 18, 2005 8:36 AM
To: linux clustering
Subject: Re: [Linux-cluster]GFS Problem

On Tue, May 17, 2005 at 11:39:08PM -0600, Frank L. Setinsek wrote:
> 
>    Hardware Configuration:  Six node cluster, each node has a LSI Fibre
Channel
>    Host Adapter interface to a SAN.
>    Software Configuration: The kernel is 2.4.21-20.EL with GFS-6.0.2-25
>    Problem: While four nodes are simultaneously accessing the SAN, if a
5th
>    node attempts to access the SAN, one of the nodes will kernel panic.
>                  The node that crashes seems to be random.  All the
crashes
>    have the same error as follows:
> 
>    May 17 21:53:52 compute-0-2.local kernel: mptscsih: ioc0: WARNING -
Device
>    (0:0:1) reported QUEUE_FULL!
>    May 17 21:53:52 compute-0-2.local kernel: SCSI disk error : host 0
channel 0
>    id 0 lun 1 return code = 440b0000

It really looks like your storage cannot have more than four nodes accessing
it at a single time.  You are getting scsi errors which are completely
confusing gfs, and causing it to panic.

--
Michael Conrad Tadpol Tilstra
To err is human, to really foul things up requires a computer.



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