On Mon, 12 Dec 2011, lhecking@users.sourceforge.net wrote:
Outage is one thing, but having the disk volumes disappear mid-transaction can be detrimental to a file system's health.
To get this back on-topic and closer to the OP's requests, are there any particular iscsi settings one should consider to increase resiliency and minimise the impact of e.g. a rebooting switch? timeout settings? The big disadvantage of iscsi is that you add another layer that can fail (compared to having virtual machine images on a local disk).
Make sure you're going through multipath even if you've only got a single link the iSCSI box. Just using iscsid and using the devices directly *will* cause you grief when you have failures. If you go via multipath the failures are masked, and it all behaves as you'd hope.
jh