You cannot mount it simultaneously on a iscsi target (host) and a iscsi
node.
But you can on multiple iscsi nodes.
Werner van der Walt wrote:
Hi All,
Have been trying to set up ocfs2 on a machine that will act as a SAN.
O/S used is Ubuntu 7.10 for both host and node. Mounting the shared
ocfs2 storage via iscsi target+initiator on the node and as a local
mount on the host. Everything installed perfectly. Modules are loaded
and services started. So far so good :)
Problem comes in when booting the node and mounting the block device
there. It then starts giving an error on the host stating "Another
node is heartbeating in our slot". The error number given is 767. If I
do a mount and look at the settings on both host and node then both
states that the device has been mounted and heartbeat=local. Also if
looking at the mounted.ocfs2 -f it is empty but if I do a
mounted.ocfs2 -f /dev/sdc then it shows just the node details and not
also the host details as mounted even though it is mounted on the host
and accessible (I can cd into the dir on the host and see the contents
created on the node).
The moment I umount on the node then the error messages stop on the
host. It remains mounted on the host as I can cd into it even though
the mounted.ocfs2 -f /dev/sdb shows nothing mounted.
Any advice? I have been googling the whole day for info on using ocfs2
and iscsi together and the correct procedure to follow but can't find
anything of value. In the ocfs2 user guide it states you can export
via NFS but doesn't mention iscsi in any way. Also what is unclear to
me is how are you suppose to mount a remote file system if you are not
making use of something like iscsi, or is it always automatically
assumed that the different nodes are all directly attached to the
storage? In the guide they just always refer to local block devices in
the procedure descriptions but they don't show you how those devices
got there?
Thanks for the assistance.
Werner
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