Its also worth getting a dump of your initiator group information too (we had LUN re-sig and lost out igroup info doing a head / OS upgrade). Luckily we had screenshots and dumps of the sigs to re-create things afterwards.
Cheers, Raj.
On Sat, Mar 27, 2010 at 5:31 PM, Learmonth, Peter < Peter.Learmonth@netapp.com> wrote:
Hi Suresh
ONTAP upgrades should not cause LUN serial numbers to change, so resignaturing should not be necessary. If LUN S/N do change, change them back and ESX should rescan and be happy.
Before you start, collect “lun show -v”.
After upgrade, look at lun show -v again and compare LUN Serial#.
If they changed, for each LUN
lun offline <lun>
lun serial <lun> <old_sn>
lun online <lun>
Share and enjoy!
Peter
*From:* Suresh Rajagopalan [mailto:SRajagopalan@williamoneil.com] *Sent:* Friday, March 26, 2010 9:15 PM *To:* toasters@mathworks.com *Subject:* LUN resignaturing
We’re running some ESX 4.0 hosts with VMFS and RDM LUNs on our filers running 7.2.6.1. We are planning a upgrade to 7.3.2
Should we expect to do LUN resignatures on VMware after the upgrade?
Thanks
Suresh