Hi Jason,

I have done this in the past. (3x LSI 1068E - IBM BR10i).

Your pool has no tie with the hardware used to host it (including your
HBA). You could change all your hardware, and still import your pool

If you really want to be on the safe side; you can export your pool before
the firmware change and then import when your satisfied the firmware
change is complete.

Export: http://docs.oracle.com/cd/E19082-01/817-2271/gazqr/index.html
Import: http://docs.oracle.com/cd/E19082-01/817-2271/gazuf/index.html

Damon Pollard

On Wed, Jul 18, 2012 at 6:14 AM, Jason Usher <jushe...@yahoo.com> wrote:

> We have a running zpool with a 12 disk raidz3 vdev in it ... we gave ZFS
> the full, raw disks ... all is well.
> However, we built it on two LSI 9211-8i cards and we forgot to change from
> IR firmware to IT firmware.
> Is there any danger in shutting down the OS, flashing the cards to IT
> firmware, and then booting back up ?
> We did not create any raid configuration - as far as we know, the LSI
> cards are just passing through the disks to ZFS ... but maybe not ?
> I'd like to hear of someone else doing this successfully before we try it
> ...
> We created the zpool with raw disks:
> zpool create -m /mount/point MYPOOL raidz3 da{0,1,2,3,4,5,6,7,8,9,10,11}
> and diskinfo tells us that each disk is:
> da1     512     3000592982016   5860533168
> The physical label (the sticker) on the disk also says 5860533168 sectors
> ... so that seems to line up ...
> Someone else in the world has made this change "while inflight" and can
> confirm ?
> Thanks.
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