zfs discuss - May 2008 - Clone a disk, need to change pool_guid

Hi folks,

I use an iSCSI disk mounted onto a Solaris 10 server.  I installed a ZFS file
system into s2 of the disk.  I exported the disk and cloned it on the iSCSI
target.  The clone is a perfect copy of the iSCSI LUN and therefore has the same
zpool name and guid.

My question is: is there any way to change the ZFS guid (and the zpool name, but
that''s easy) on the clone so that I can mount both the original disk
and clone onto the same Solaris 10 server?  When I attempt to mount both the
original and cloned iSCSI LUNs onto the server, "zpool attach" only
sees one disk (I suspect that ZFS is assuming that it''s seeing the same
disk via multi-pathing and therefore only presents one of the "paths"
to the administrator).

Thanks in advance,

Damien Lederer
 
 
This message posted from opensolaris.org

> My question is: is there any way to change the ZFS
> guid (and the zpool name, but that''s easy) on the
> clone so that I can mount both the original disk and
> clone onto the same Solaris 10 server?  When I
> attempt to mount both the original and cloned iSCSI
> LUNs onto the server, "zpool attach" only sees one
> disk (I suspect that ZFS is assuming that it''s seeing
> the same disk via multi-pathing and therefore only
> presents one of the "paths" to the administrator).
> 
> Thanks in advance,
> 
> Damien Lederer
unfortunately - I don''t think this is yet possible with ZFS  - this is
one of the  reasons  stopping me to use ZFS in a BCV type of environment  -
adding this feature will make ZFS really popular with big enterprise customers I
reckon ...where Hardware replication/snapshots techniques are heavily in use

Cheers!
 
 
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