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Re: [Xen-users] LVM snapshot and xen stability

To: Pasi Kärkkäinen <pasik@xxxxxx>
Subject: Re: [Xen-users] LVM snapshot and xen stability
From: Taneli Leppä <taneli@xxxxxxxxxx>
Date: Fri, 21 Apr 2006 16:53:03 +0300
Cc: "Emiliano Gabrielli \(aka AlberT\)" <AlberT@xxxxxxxxxxxxxx>, xen-users@xxxxxxxxxxxxxxxxxxx
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Hi,

Pasi Kärkkäinen wrote:
Common understanding is that LVM2 snapshots are unstable - many people see
crashes and problems with snapshots.

I'm using LVM2 snapshots as domU filesystems on both Xen 2 and Xen 3.
I haven't really had any problems, however my usage patterns cannot be
described as heavy.

I've only had one problem and that was when a snapshot filled
its allocated capacity and refused to mount. I did recover from
that by editing the LVM2 header directly on the disk and
backing up the data after a succesfull mount. Now I'm running
a script that automatically runs "lvextend" on nearly-filled
snapshot volumes.

--
  Taneli Leppä         | Crasman Co Ltd
  <taneli@xxxxxxxxxx>  | <http://www.crasman.fi/>

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