Cluster mount succeeds but resource shows as failed (OPENAIS, OCFS2, CLUSTER)
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shows that the resource was in fact mounted.
/dev/dm-0 on /var/lib/xen/images type ocfs2 (rw,_netdev,cluster_stack=pcmk)
In the /var/log/messages you could see a sequence similar to
start of Filesystem resource
RA output: (fs:1:start:stderr) 2009/08/18_14:10:53 INFO: Running start for /dev/disk/by-id/scsi-36005076b074b2b7f4a7d5f5700000009 on /etc/xen/images
Filesystem resource start succeeded
crmd: : info: process_lrm_event: LRM operation fs:1_start_0 (call=11, rc=0, cib-update=20, confirmed=true) complete ok
Monitor of Filesystem resource failure
crmd: : info: process_lrm_event: LRM operation fs:1_monitor_20000 (call=12, rc=-2, cib-update=0,
confirmed=true) Cancelled unknown exec error
It is also viable to see errors like that the Filesystem is mounted and that dmesg should be checked
lrmd: : info: RA output: (fs:1:start:stderr) Device or resource busy while mounting /dev/dm-0 on /etc/xen/images. Check 'dmesg' for more information on this error.
this is the case if you did a cleanup on the resource and is secondary to the above mentioned error.
ls -ld /etc/xen/images
lrwxrwxrwx 1 root root 12 Aug 15 03:53 /etc/xen/images -> /var/lib/xen/images
the directory attribute selected was
while the cluster mounts the device to the directory the Operating system follows the symlink, so in /etc/mtab is
Then after the mount, that succeeds and can be seen in the log files, the cluster does a monitor check which is configured by default. The monitor now checks /etc/mtab for the entry from the directory attribute, which is in this example /etc/xen/vm/images. But the Operating System followed the symlink so in /etc/mtab there is only /var/lib/xen/images. So the monitor fails.
/dev/dm-0 /var/lib/xen/images ocfs2 rw,_netdev,cluster_stack=pcmk 0 0
This can result in the node being fenced.
The solution to this is not to use any symlink in the Filesystem attributes.
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- Document ID:7004243
- Creation Date: 20-Aug-2009
- Modified Date:03-Mar-2020
- SUSE Linux Enterprise Server
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