Ocfs2 users - Jun 2010 - Adding node with storage to existing ocfs2 FS?

Afternoon,

I hate to be a total noob but I've been experimenting and I'm a bit
stuck.
I've got a node with a couple of 500GB drives that I've used to create a
logical volume. I formatted the LV with ocfs2 and mounted it and things
look correct so far.

[root at test64 ~]# mount
/dev/hda3 on / type ext3 (rw)
proc on /proc type proc (rw)
sysfs on /sys type sysfs (rw)
devpts on /dev/pts type devpts (rw,gid=5,mode=620)
/dev/sda1 on /home type ext3 (rw)
/dev/hda1 on /boot type ext2 (rw)
tmpfs on /dev/shm type tmpfs (rw)
none on /proc/sys/fs/binfmt_misc type binfmt_misc (rw)
sunrpc on /var/lib/nfs/rpc_pipefs type rpc_pipefs (rw)
configfs on /sys/kernel/config type configfs (rw)
ocfs2_dlmfs on /dlm type ocfs2_dlmfs (rw)
/dev/mapper/vg0-lv0_ocfs2 on /mnt/ocfs2 type ocfs2 (rw,_netdev,heartbeat=local)

[root at test64 ~]# df
Filesystem           1K-blocks      Used Available Use% Mounted on
/dev/hda3             16734276   6437696   9432800  41% /
/dev/sda1            153834852   7274540 138745896   5% /home
/dev/hda1               991960     23512    917244   3% /boot
tmpfs                  3966584         0   3966584   0% /dev/shm
/dev/mapper/vg0-lv0_ocfs2
                     976764928   3116444 973648484   1% /mnt/ocfs2


[root at test64 ~]# /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


Now I want to take a second node that has some internal storage and
add the storage to the ocfs2 pool. Here's where I struggle. Are the basic
steps the following?

1. Install ocfs2-tools and ocfs2console on new node.

2. $service o2cb enable    (new node)

3. /etc/init.d/o2cb start  (new node)

4. Add new node to cluster configuration on the original and propagate it
to the new node (using ocfs2console).

5. format storage on new node

6. mount device as /mnt/ocfs2 on the new node (same mount point as
orignal node).

When I've tried this I can't seem to add the storage from the second
node to the pool.

Thanks! (and sorry to be such a noob).

Jeff
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On Sun, Jun 13, 2010 at 04:12:03PM -0400, Jeffrey Layton
wrote:
> I hate to be a total noob but I've been experimenting and I'm a bit
stuck.
> I've got a node with a couple of 500GB drives that I've used to
create a
> logical volume. I formatted the LV with ocfs2 and mounted it and things
> look correct so far.
<snip>
> Now I want to take a second node that has some internal storage and
> add the storage to the ocfs2 pool. Here's where I struggle. Are the
basic
> steps the following?
	ocfs2 is a shared-storage cluster filesystem.  The disks need to
be connected to all nodes that want to share them.  ocfs2 does not
share internal disks over the network by itself.

Joel

-- 

"Heav'n hath no rage like love to hatred turn'd, nor Hell a fury,
 like a woman scorn'd."
        - William Congreve

Joel Becker
Principal Software Developer
Oracle
E-mail: joel.becker at oracle.com
Phone: (650) 506-8127