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Re: [Xen-users] Re: DomU on LVM

  • To: "Ross S. W. Walker" <rwalker@xxxxxxxxxxxxx>
  • From: Nico Kadel-Garcia <nkadel@xxxxxxxxx>
  • Date: Fri, 09 May 2008 07:26:13 +0100
  • Cc: Nick Anderson <nick@xxxxxxxxxxxx>, Tomasz Nowak <tnowak-p@xxxxxxxxxxxxx>, xen-users@xxxxxxxxxxxxxxxxxxx
  • Delivery-date: Thu, 08 May 2008 23:25:58 -0700
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Ross S. W. Walker wrote:
Nick Anderson wrote:
Ross S. W. Walker wrote:

What would be the practical reason for that as opposed to
allocating a bigger LV to contain all partitions?
One reason I can think of is for snapshots of the data you want to snapshot. If I dont care whats in /var why waste time in backing it up. I might want to snapshot home more often than /. If its all on one big LV you cant get that fine grained snapshotting can you?

Just to poke a little further, why take snapshots in dom0 instead
of within domU?

You could provide a second LV to each domU located on different spindles
that provide snapshotting within the domUs.


To avoid having to get nutso about decoding and mounting LVM tools in Dom0, and to use the superior disk I/O of Dom0 for doing the backups or duplication of its contents.

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