Hi,
I'm trying to create a cluster out of 2 nodes. Both systems share the
same LUN via FC and see it as /dev/sdd.
/dev/sdd hat eine partition
Disk /dev/sdd: 21.4 GB, 21474836480 bytes
64 heads, 32 sectors/track, 20480 cylinders
Units = cylinders of 2048 * 512 = 1048576 bytes
Disk identifier: 0xc29cb93d
Device Boot Start End Blocks Id System
/dev/sdd1 1 20480 20971504 83 Linux
und diese ist mit
mkfs.ocfs2 -L ocfs2 /dev/sdd1
formatiert.
Here is my /etc/ocfs2/cluster.conf
node:
ip_port = 7777
ip_address = 10.0.0.168
number = 0
name = xen02a
cluster = ocfs2
node:
ip_port = 7777
ip_address = 10.0.0.102
number = 1
name = xen02b
cluster = ocfs2
cluster:
node_count = 2
name = ocfs2
Everything seems to be fine:
xen02a:~# /etc/init.d/o2cb status
Driver for "configfs": Loaded
Filesystem "configfs": Mounted
Stack glue driver: Loaded
Stack plugin "o2cb": Loaded
Driver for "ocfs2_dlmfs": Loaded
Filesystem "ocfs2_dlmfs": Mounted
Checking O2CB cluster ocfs2: Online
Heartbeat dead threshold = 31
Network idle timeout: 30000
Network keepalive delay: 2000
Network reconnect delay: 2000
Checking O2CB heartbeat: Active
And mounting the fs on each node works fine:
/dev/sdd1 on /shared type ocfs2 (rw,_netdev,heartbeat=local)
Both nodes can ping each other.
xen02a:~# mounted.ocfs2 -d
Device FS UUID Label
/dev/sdd1 ocfs2 55a9d0b0-050c-484f-9725-7788a3b9dde0 ocfs2
xen02b:~# mounted.ocfs2 -d
Device FS UUID Label
/dev/sdd1 ocfs2 55a9d0b0-050c-484f-9725-7788a3b9dde0 ocfs2
Now the problem:
I first mount the device on node1:
xen02a:~# mount -L ocfs2 /shared/
=> /dev/sdd1 on /shared type ocfs2 (rw,_netdev,heartbeat=local)
without any errors.
dmesg says:
[ 97.244054] ocfs2_dlm: Nodes in domain
("55A9D0B0050C484F97257788A3B9DDE0"): 0
[ 97.245869] kjournald starting. Commit interval 5 seconds
[ 97.247045] ocfs2: Mounting device (8,49) on (node 0, slot 0) with
ordered data mode.
xen02a:~# mounted.ocfs2 -f
Device FS Nodes
/dev/sdd1 ocfs2 xen02a
xen02a:~# echo "slotmap" | debugfs.ocfs2 -n /dev/sdd1
Slot# Node#
0 0
Now I mount the device on the second node:
xen02b:~# mount -L ocfs2 /shared/
=> /dev/sdd1 on /shared type ocfs2 (rw,_netdev,heartbeat=local)
[ 269.741168] OCFS2 1.5.0
[ 269.765171] ocfs2_dlm: Nodes in domain
("55A9D0B0050C484F97257788A3B9DDE0"): 1
[ 269.779620] kjournald starting. Commit interval 5 seconds
[ 269.779620] ocfs2: Mounting device (8,49) on (node 1, slot 1) with
ordered data mode.
[ 269.779620] (2953,0):ocfs2_replay_journal:1149 Recovering node 0 from
slot 0 on device (8,49)
[ 270.950540] kjournald starting. Commit interval 5 seconds
xen02b:~# echo "slotmap" | debugfs.ocfs2 -n /dev/sdd1
Slot# Node#
1 1
xen02b:~# mounted.ocfs2 -f
Device FS Nodes
/dev/sdd1 ocfs2 xen02b
So the first mount seems to be gone and any changes on the fs on that
node are not distributed.
At the moment I have no idea what this could be. I hope some can help me.
regards,
Manuel
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