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Re: [Xen-users] How was CoW implemented on the Demo LiveCD (3.0) ??
- To: Tim Deegan <Tim.Deegan@xxxxxxxxxxxx>
- From: Anand <xen.mails@xxxxxxxxx>
- Date: Wed, 25 Jan 2006 16:30:39 +0530
- Cc: xen-users@xxxxxxxxxxxxxxxxxxx
- Delivery-date: Wed, 25 Jan 2006 11:09:35 +0000
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On 1/25/06, Tim Deegan <Tim.Deegan@xxxxxxxxxxxx> wrote:
On Wed, Jan 25, 2006 at 12:55:16AM +0530, Anand wrote:
> Can the same method of cow used in the LiveCD be implemented with LVM ?
> instead of the flat images ?
I've never tried it, but it should be possible to use the dmsetup runes
on any block device. In fact Andrew Peace's create_cow script from the
Xen3 demo CD does try to do the right thing if you give it a block
device instead of a file (i.e. not pass it through a loop device).
Don't the LVM tools provide a copy-on-write snapshot facility already?
LVM has snapshot features which are not stable. Seeing this post i thought if it was possible to use the same feature but with LVM instead of flat files.
--
regards,
Anand
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