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RE: [Xen-users] Re: iSCSI and LVM


From: James Harper [mailto:james.harper@xxxxxxxxxxxxxxxx]
Sent: Tue 15/06/2010 14:10
To: Ferenc Wagner; Jonathan Tripathy
Cc: xen-users@xxxxxxxxxxxxxxxxxxx
Subject: RE: [Xen-users] Re: iSCSI and LVM

> You can use live migration in such setup, even safely if you back it
> clvm.  You can even live without clvm if you deactivate your VG on all
> but a single dom0 before changing the LVM metadata in any way.  A
> non-clustered VG being active on multiple dom0s isn't a problem in
> itself and makes live migration possible, but you'd better understand
> what you're doing.

You can't snapshot though. I tried that once years ago and it made a
horrible mess.



This is why I'm thinking to just use one big LUN for each xen node, and just manually connect another xen host to the LUN if the orignal server were to fail. The Dom0s could handle the snapshotting...

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