Having never done this, perhaps it's simpler than I'm making it out to
be, but is this possible?

Two systems on the same SAN, one is 5.2 ML5, the other 5.3 ML4. If I
exportvg my vg's from the 5.2 system (H80), and the LUNs are in the
same zone as my 5.3 system (570), can I simply importvg those same
vg's on the new system?

Any problems going from 5.2 to 5.3?

TIA,
Scott

Hi Scott

Ensure it's available on the other node

cfgmgr
you should be able to see matching pvid's

If you can see the disk but not the pvid,

chdev -l hdisk# -a pv=yes

You should then be able to

importvg -y vgname hdisk#

HTH

Steve

Hi Scott,

if you have varied off the Volumegroup on the source side, you are able
to import this Volumegroup on your target system.

But to be able to import a Volume Group, you need to have the PVIDs
visible.

If the hdisks are available on the target system, but "lspv" showes no
PVID, you should use "rmdev -l hdisk<X>" to switch the hdisks to
"defined". If all disks are "defined", "cfgmgr" should bring back all
hdisks to "available" and should have read the PVIDs into the ODM.

If lspv showes the former used PVIDs, you should be able to import the
Volume Group.

If you have changed the PVIDs, using "chdev -l hdisk<X> -a pv=yes", you
can use "recreatevg" to recover this VolumeGroup and update the VGDAs.


Best regards,

Swen

In article <1147193535.052137.199970
@v46g2000cwv.googlegroups.com>, sdpeck@gmail.com says...
> Any problems going from 5.2 to 5.3?

There are no problem going from 5.2 to 5.3. But if you modify the
VG on the 5.3 side you might not be able to go back to 5.2. I
don't remember specifics, but the 'huge' VG size might be such an
option.

Markus
--
Markus Baertschi Phone: ++41 (21) 807 1677
Bas du Rossé 14b Fax : ++41 (21) 807 1678
CH-1163, Etoy Email: markus@markus.org
Switzerland Homepage: www.markus.org

Thanks everyone. We're going to start testing this today.