I would like to avoid setting up a file server as back-end to my web
server cluster, as this would give a single point of failure. Give we
are running a iSCSI array of 8 nodes with redundancy and replication
etc, I would like to take advantage of this.
It's the first time I'll be working with iSCSI from within Linux. A)
is it possible and b) if it is, how do I best configure multiple
machine to use the same iSCSI LUN / data store, as a "common share " .
I assume I need a more advance file system that ext3.
iSCSI doesn't generally  work that way. You can't mount a volume in more
than one place at once. That's the other difference between a "SAN" and a
"NAS" . If you have a storage appliance like a NetApp filer, there's a
chance you can say "these disks are an iSCSI target", "these disks are
A solution is to mount the LUN on one machine, and cluster that machine with
a second using Heartbeat and a floating IP.
 Without black-magic clustering such as
 Other than the letters being backwards, of course.