On Mon, 12 Dec 2011, lhecking@xxxxxxxxxxxxxxxxxxxxx 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
_______________________________________________
CentOS mailing list
CentOS@xxxxxxxxxx
http://lists.centos.org/mailman/listinfo/centos
