| To: | "Fajar A. Nugraha" <fajar@xxxxxxxxx> |
|---|---|
| Subject: | Re: [Xen-users] How to make snapshot disk backup of Xen Guest Domain |
| From: | KC LO <kclo2000@xxxxxxxxx> |
| Date: | 2010年4月15日 23:37:32 +0800 |
| Cc: | xen-users@xxxxxxxxxxxxxxxxxxx |
| Delivery-date: | 2010年4月15日 08:39:24 -0700 |
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On Thu, Apr 15, 2010 at 10:49 AM, KC LO <kclo2000@xxxxxxxxx> wrote:> Hi all,
>
> I have created a DomU guest based on the following method :-
> 1) I create a LV with size 6GB : lvcreate -L 6G
> 2) I setup a new guest DomU with /dev/VolGroup00/vm1 as disk device
> 3) In DomU, I use /dev/hda as device to create partition for /boot, /,
> and swap without using LVM
> fdisk -l /dev/hda
>
> Disk /dev/hda: 10.7 GB, 10737418240 bytes
> 255 heads, 63 sectors/track, 1305 cylinders
> Units = cylinders of 16065 * 512 = 8225280 bytes
>
> Device Boot Start End Blocks Id System
> /dev/hda1 * 1 13 104391 83 Linux
> /dev/hda2 14 521 4080510 83 Linux
> /dev/hda3 522 782 2096482+ 82 Linux swap / Solaris
>
> I am now going to do snapshot disk backup at Dom0 for DomU. I have read
> Internet that I can do
>
> lvcreate -L 1G -s -n guest_snapshot /dev/VolGroup00/vm1
> to create a Logical volume guest_snapshot.
>
> How can I mount the partition(/dev/hda1, /dev/hda2) under this volume
> guest_snapshot to do backupkpartx -av /dev/VolGroup00/guest_snapshot
You should end up with /dev/mapper/guest_snapshot1 and
/dev/mapper/guest_snapshot2 (or similar) that you can mount.
Afterwards, don't forget to unmount it and run
kpartx -dv /dev/VolGroup00/guest_snapshot
--
Fajar
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