hi there
i try to setup OCFS2 with loop device /dev/loop0
i've 4 servers running SLES10 SP2.
internal ip's: 192.168.55.1, .2, .3 and .6
my cluster.conf:
--------------------------------------------
node:
ip_port = 7777
ip_address = 192.168.55.1
number = 0
name = www
cluster = cawww
node:
ip_port = 7777
ip_address = 192.168.55.2
number = 1
name = www2
cluster = cawww
node:
ip_port = 7777
ip_address = 192.168.55.3
number = 2
name = www3
cluster = cawww
node:
ip_port = 7777
ip_address = 192.168.55.6
number = 3
name = www4
cluster = cawww
cluster:
node_count = 4
name = cawww
--------------------------------------------
what i did so far is:
- create a file for the loop device on each server with: dd if=/dev/zero
of=/var/lib/ocfs2/cawww bs=1G count=1
- setup loop device on each server: losetup /dev/loop0 /var/lib/ocfs2/cawww
- formated the device on www1 : mkfs.ocfs2 -b 4K -C 32K -N 4 -L ocfscawww
/dev/loop0
i read here
"http://www.oracle.com/technology/pub/articles/hunter_rac10gr2_iscsi_2.html#16";
that i need to format only on one server. is this correct?
- mount with: mount -t ocfs2 /dev/loop0 /cawww
mount works on www1, but not on the other servers
(mount.ocfs2: Bad magic number in superblock while opening device
/dev/loop0)
i tried to format on each server and then mount again with works but it
then i don't see
changes i make in /cawww on the other servers.
it seems that each server isn't aware of the other servers.
firewall is disabled on each server.
maybe ocfs2 doesn't work with a loop device?
any ideas what the problem could be?
thanks, christian
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