Ocfs2 users - Jul 2015 - Fail to mount iscsi volume at boot using o2cb

Hi all,

I hope to mount an iscsi volume at boot time by using o2cb cluster stack. But a
reboot breaks at the time when kernel
mounts device in /etc/fstab. Error screenshot is attached. From error message,
kernel was waiting for iscsi volume to be available
until timeout.

ISCSI volume is common for shared storage disk.  But I don't know why this
happened.
Any hint is appreciated. Thanks!

The following is what I did:
Environment: 3 nodes with sle12, an iscsi volume from a remote iscsi server.

1. 'blkid /dev/sdb' to get UUID of volume,  add
'UUID=e7274365-4c97-4292-9367-f8be382a2872 /mnt/shared ocfs2 defaults 0
0'
to /etc/fstab.

2. referring to  'man ocfs2.cluster.conf' and 'man o2cb.sysconfig
', and configure o2cb as the following shows.

s2:~ # o2cb list-cluster hacluster
node:
	number = 1
	name = s1
	ip_address = 147.2.208.159
	ip_port = 7777
	cluster = hacluster

node:
	number = 2
	name = s2
	ip_address = 147.2.208.137
	ip_port = 7777
	cluster = hacluster

node:
	number = 3
	name = s3
	ip_address = 147.2.208.93
	ip_port = 7777
	cluster = hacluster

cluster:
	node_count = 3
	heartbeat_mode = local
	name = hacluster

3. enable o2cb and ocfs2 service by chkconfig

4.reboot



--
Eric, Ren


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Hi!
> I hope to mount an iscsi volume at boot time by using o2cb cluster stack.
But a reboot breaks at the time when kernel
> mounts device in /etc/fstab. Error screenshot is attached. From error
message, kernel was waiting for iscsi volume to be available
> until timeout.
> 
> ISCSI volume is common for shared storage disk.  But I don't know why
this happened.
> Any hint is appreciated. Thanks!
> 
> The following is what I did:
> Environment: 3 nodes with sle12, an iscsi volume from a remote iscsi
server.
> 
> 1. 'blkid /dev/sdb' to get UUID of volume,  add
'UUID=e7274365-4c97-4292-9367-f8be382a2872 /mnt/shared ocfs2 defaults 0
0'
> to /etc/fstab.
Maybe you need to add the '_netdev' option to /etc/fstab? Like so:
UUID=e7274365-4c97-4292-9367-f8be382a2872 /mnt/shared ocfs2 defaults,_netdev 0 0

This should postpone the mount until later in the boot process.

-- Adi