I met a problem of heartbeat region could not be found in one oracle VM server when I try to start o2cb service
[root@ovs01 ~]# service o2cb restart
Clean userdlm domains: OK
Stopping global heartbeat on cluster "611133070c063202": OK
Stopping O2CB cluster 611133070c063202: Unregistering O2CB cluster "611133070c063202": OK
Unmounting ocfs2_dlmfs filesystem: OK
Unloading module "ocfs2_dlmfs": OK
Unloading module "ocfs2_stack_o2cb": OK
/etc/init.d/o2cb: line 1151: read: read error: 0: No such device
Unmounting configfs filesystem: OK
Unloading module "configfs": OK
checking debugfs...
Loading filesystem "configfs": OK
Mounting configfs filesystem at /sys/kernel/config: OK
Loading stack plugin "o2cb": OK
Loading filesystem "ocfs2_dlmfs": OK
Mounting ocfs2_dlmfs filesystem at /dlm: OK
Setting cluster stack "o2cb": OK
Registering O2CB cluster "611133070c063202": OK
Setting O2CB cluster timeouts : OK
Starting global heartbeat for cluster "611133070c063202": Failed
o2cb: Heartbeat region could not be found 0004FB00000500001CEA6736AEC63279
Stopping global heartbeat on cluster "611133070c063202": OK
I resolved this issue by running the command mounted.ocfs2 -f and mounted.ocfs2 -d
Device Stack Cluster F UUID Label
/dev/mapper/3600a098000d722b7000001615b57fd67 o2cb 611133070c063202 G 0004FB00000500006D7B0D0911B72616 OVS_POOL_FILESYSTEM
and I put the new value (0004FB00000500006D7B0D0911B72616) in /etc/ocfs2/cluster.conf ( Heartbeat region )
cluster.conf:
heartbeat:
region = 0004FB00000500001CEA6736AEC63279
cluster = 611133070c063202
node:
number = 0
name = ovs01
ip_address = 192.168.254.8
ip_port = 7777
cluster = 611133070c063202
node:
number = 1
name = ovs02
ip_address = 192.168.254.9
ip_port = 7777
cluster = 611133070c063202
cluster:
node_count = 2
heartbeat_mode = global
name = 611133070c063202
When I try to update the pool from Oracle VM Manager GUI, the cluster.conf will be updated again and the region will be return back to 0004FB00000500001CEA6736AEC63279
I check with ovmcli command and I got that Pool_OVS contains the value 0004FB00000500001CEA6736AEC63279 ?
How can I updated it to the new value ?