Ovs-makerepo / ovs-onlinerepo not working with multipath environment

Using /usr/lib/ovs/ovs-onlinerepo does not work within a multipath environment.
Configured on my SAN device are two LUNs, each visible over multiple paths to
the two HBAs of the server.
Trying to create a cluster root repository (or any other repository) fails:
mount.ocfs2: Device or resource busy while mounting /dev/sdi1 on /OVS. Check 'dmesg' for more information on this error.
I tracked this down as something in /usr/lib/ovs/ovs-repo-common, where the
real "mount" is done. Mounting is with option "-U", which mounts by using
a UUID. As multipathing is enabled, the partition with that specific UUID is
seen via multiple pathes -- and the mount fails.
Has anybody an idea if there is a correct(ed) version of repository scripts around
or can direct me to a clue how to correct that script accordingly?
BTW: you get that ominous UUID by issuing:
/lib/udev/vol_id -u /dev/mapper/mpath2p1
Edited by: djahnke on 06.01.2009 05:11

Hi,
the order is important...
-> disable the mulitpath again
# vi /etc/multipath.conf
-> commend again the comlete "blacklist"
-> reboot XEN server
-> -> so you see only the physically devices.
the follow instructions:
Requirements to be able to enable HA:
=================================
a) have more then one XEN server in the server pool
-> you have.
b) have the single XEN servers attached with a shared disk system ( e.g. SAN -> OCFS2 )
-> you have.
c) Create OCFS2 disk:
# fdisk /dev/sda
# mkfs.ocfs2 -L xenrbg -b 4k -C 4k -J size=64M -N 16 /dev/sda1
-> think you have
d) Create REPO ( must executed on POOL MASTER SERVER ):
# /usr/lib/ovs/ovs-cluster-configure
# /usr/lib/ovs/ovs-makerepo /dev/sda1 C "cluster root"
-> think you have
-> -> that was the original docu...
-> -> now also my problem started ;-)
Sullution was:
======================
f) edit /etc/sysconfig/o2cb
30000
2000
2000
-> setup the timings in that order
-> copy the file to the other node
g) copy repository file
copy the file /etc/ovs/repositories to the other node
( make sure, that the device name in that file is the same like on your source )
( you also have the change to setup multipath later on )
h) check and may be edit file:
#vi /etc/ocfs2/cluster.conf
node:
ip_port = 7777
ip_address = <IP-ADR of your first server>
number = 0
name = <hostname of your first server - short>
cluster = ocfs2
node:
ip_port = 7777
ip_address = <IP-ADR of your second server>
number = 1
name = <hostname of your second server - short>
cluster = ocfs2
cluster:
node_count = 2
name = ocfs2
## file end ###
-> here i had only one node specified on my second node
-> copy then the file to the other node
Then, enable multipath again - # vi /etc/mulitpath.conf
-> uncomment blacklist
-> reboot
-> -> check: multipath -ll
then edit /etc/ovs/repositories
-> change here again to your /dev/mapper/mpath0p1
-> deploy the file on all XEN servers
-> reboot them
-> -> now it should work ;-)
bye eike

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