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[Linux-cluster] GFS cluster freezing after a few hours..




Hi,

We've just setup a three node GFS cluster on Debian Etch using qlogic HBA against a SAN.

gfs_tool 1.03.00 (built Mar  8 2007 23:38:09)
Copyright (C) Red Hat, Inc.  2004-2005  All rights reserved.

Linux cms2 2.6.18-5-amd64 #1 SMP Tue Oct 2 20:37:02 UTC 2007 x86_64 GNU/Linux

We start the cluster and it works fine for a while..

/sbin/lock_gulmd -n aicluster -s cms1,cms2,cmsqa
sleep 1
/bin/mount -t gfs -o acl /dev/sda /san

But eventually after hours or a day something freezes/hangs and we can't issue any commands like df/ls/du etc..

There is no evidence that anything is wrong though.. This command seems to show a working cluster right?

cmsqa:/home/alfresco# gulm_tool nodelist cms1
 Name: cms2
  ip    = ::ffff:192.168.1.139
  state = Logged in
  last state = Logged out
  mode = Slave
  missed beats = 0
  last beat = 1193685839882270
  delay avg = 10003803
  max delay = 755383848
 
 Name: cmsqa
  ip    = ::ffff:128.1.32.134
  state = Logged in
  last state = Logged out
  mode = Slave
  missed beats = 0
  last beat = 1193685841974801
  delay avg = 10003928
  max delay = 138560844
 
 Name: cms1
  ip    = ::ffff:192.168.1.137
  state = Logged in
  last state = Was Logged in
  mode = Master
  missed beats = 0
  last beat = 1193685842490217
  delay avg = 10003231
  max delay = 10007256


Any ideas? We need to reboot the boxes to get the cluster back.

Damon.
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