[Ocfs2-users] Random node reboots

[Neil Campbell]

Hi all,
 
I keep getting node reboots across my cluster, it seems random in that
the node being evicted changes
and in that it happens every now an then. I'm running RHEL 4 kernel
2.6.89.0.26.ELsmp, 
and OCFS is OCFS2 1.2.9 Mon Jun 21 20:03:07 PDT 2010 (build
5e8325ec7f66b5189c65c7a8710fe8cb)
 
I am using OCFS2 as a general purpose filesystem (i.e not for Oracle
datafiles or OCR etc),
with the following entries in /etc/fstab   
 
/dev/emcpowera1         /u01/cfs                ocfs2   _netdev
0 0
 
As a general purpose filesystem, should I be using the nointr mount
option?
 
/etc/init.d/o2cb status
 
Module "configfs": Loaded
Filesystem "configfs": Mounted
Module "ocfs2_nodemanager": Loaded
Module "ocfs2_dlm": Loaded
Module "ocfs2_dlmfs": Loaded
Filesystem "ocfs2_dlmfs": Mounted
Checking O2CB cluster UATocfs2: Online
  Heartbeat dead threshold: 61
  Network idle timeout: 60000
  Network keepalive delay: 2000
  Network reconnect delay: 2000
Checking O2CB heartbeat: Active
 
/var/log/messages from the node being rebooted doesn't show anything,
just the to reboot shows the following
 
  Dec  8 00:59:02 dcapp01 syslogd 1.4.1: restart.
 
On the other nodes, I see the following entries
 
Dec  8 01:56:01 dcapp02 kernel: o2net: connection to node dcapp01 (num
0) at 10.255.255.1:10007 has been idle for 60.0 seconds, shutting it
down.
Dec  8 01:56:01 dcapp02 kernel: (0,3):o2net_idle_timer:1426 here are
some times that might help debug the situation: (tmr 1291733701.691575
now 1291733761.692608 dr 1291733701.690949 adv
1291733701.696965:1291733701.696967 func (d399da91:500)
1291733701.691576:1291733701.696950)
Dec  8 01:56:01 dcapp02 kernel: o2net: no longer connected to node
dcapp01 (num 0) at 10.255.255.1:10007
Dec  8 01:57:01 dcapp02 kernel: (16082,3):o2net_connect_expired:1585
ERROR: no connection established with node 0 after 60.0 seconds, giving
up and returning errors.
Dec  8 01:57:01 dcapp02 kernel:
(4215,2):dlm_send_remote_convert_request:398 ERROR: status = -107
Dec  8 01:57:01 dcapp02 kernel: (4215,2):dlm_wait_for_node_death:365
C5C06C9B675D41B99B60DE2EB28CE0F7: waiting 5000ms for notification of
death of node 0
Dec  8 01:57:04 dcapp02 kernel: (16082,3):ocfs2_dlm_eviction_cb:119
device (120,1): dlm has evicted node 0
Dec  8 01:57:05 dcapp02 kernel:
(4269,0):dlm_send_remote_convert_request:398 ERROR: status = -107
Dec  8 01:57:05 dcapp02 kernel: (4269,0):dlm_wait_for_node_death:365
D43AF814A25845F7B103EBBEA440BA18: waiting 5000ms for notification of
death of node 0
Dec  8 01:57:05 dcapp02 kernel: (16082,3):ocfs2_dlm_eviction_cb:119
device (120,66): dlm has evicted node 0
Dec  8 01:57:06 dcapp02 kernel: (16082,3):ocfs2_dlm_eviction_cb:119
device (120,65): dlm has evicted node 0
Dec  8 02:00:15 dcapp02 kernel: o2net: connected to node dcapp01 (num 0)
at 10.255.255.1:10007
Dec  8 02:00:29 dcapp02 kernel: ocfs2_dlm: Node 0 joins domain
C5C06C9B675D41B99B60DE2EB28CE0F7
Dec  8 02:00:29 dcapp02 kernel: ocfs2_dlm: Nodes in domain
("C5C06C9B675D41B99B60DE2EB28CE0F7"): 0 1 2 3 6 7 8 9 10 11 14 15
Dec  8 02:00:35 dcapp02 kernel: ocfs2_dlm: Node 0 joins domain
97F22666B5A6494AAF38C53909275DB2
Dec  8 02:00:35 dcapp02 kernel: ocfs2_dlm: Nodes in domain
("97F22666B5A6494AAF38C53909275DB2"): 0 1 2 3
Dec  8 02:00:39 dcapp02 kernel: ocfs2_dlm: Node 0 joins domain
D43AF814A25845F7B103EBBEA440BA18
Dec  8 02:00:39 dcapp02 kernel: ocfs2_dlm: Nodes in domain
("D43AF814A25845F7B103EBBEA440BA18"): 0 1 2 3
 
I would really appreciate some help with this, as I'm not sure where to
go from here.
 
Thanks
Neil
 

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