SEO

#1 (**permalink**) 01-05-2008, 06:18 AM

I'm grappling with the idea of mirroring rootvg on the two nodes of my HACMP
cluster.

If anyone has done this, I'd be interested in your experiences, particularly
the behavior you expect if the boot disk on an active node dies. Would
HACMP failover to the other node or would the node reboot on the mirrored
boot disk without failing over?

Thanks!

#2 (**permalink**) 01-05-2008, 06:18 AM

On Tue, 12 Apr 2005 16:33:27 -0400, "Larry Anta" <lanta@ryerson.ca> wrote:

>I'm grappling with the idea of mirroring rootvg on the two nodes of my HACMP
>cluster.
>
>If anyone has done this, I'd be interested in your experiences, particularly
>the behavior you expect if the boot disk on an active node dies. Would
>HACMP failover to the other node or would the node reboot on the mirrored
>boot disk without failing over?
>
>Thanks!
>
If your rootvg is properly mirrored, there's no 'reboot' on failure; just
like any other mirrored disk the lvm logs the error and continues with the
accessable physical partitions. Just be sure to disable quorum AND put
both drives in the bootlist, so you can boot from hdisk1 if hdisk0 fails
and you need to reboot.

HACMP isn't involved at all -- unless you forget to disable quorum, or
don't have the rootvg fully mirrored after all -- inwhich case you will
failover as you'll loose your running environment.

Tom

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

SEO

HACMP *and* Mirror rootvg?

**HACMP and Mirror rootvg?**