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

To: "Ross S. W. Walker" <rwalker@xxxxxxxxxxxxx>
Subject: Re: [Xen-users] Re: DomU on LVM
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
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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.

-Ross

__
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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