[Xen-users] Howto made LVM2 snapshots of my whole HVM domU disk, not per partition.

["Thiago Camargo Martins Cordeiro" <thiagocmartinsc@xxxxxxxxx>]

Hi!

 In my dom0, I have two logical volumes for my virtualized Windows 2003 Servers, each of with it's your own partitions, let's see:

 I have this lvm volume "/dev/mapper/HyperVG01-windows01-disk1" is "phy:/dev/mapper/HyperVG01-windows01-disk1,hda,w" and
"/dev/mapper/HyperVG01-windows01-disk2" is "phy:/dev/mapper/HyperVG01-windows01-disk2,hdb,w" in my /etc/xen/windows01-dm.

 So I have Windows working in a new HVM stubdomain. But how can I made a entire backup of my disks, including my Windows boot loader and move my Windows to another Hypervisor?

 I have tried:
1) xm shutdown windows01;
2) dd if=/dev/mapper/HyperVG01-windows01-disk1 of=/var/backups/windows01-disk1.dd
2) dd if=/dev/mapper/HyperVG01-windows01-disk2 of=/var/backups/windows01-disk2.dd
3) move windows01-disk1.dd and windows01-disk2 to another Hypervisor and do inverse dd;
4) xm create windows01-stubdom on the new Hypervisor;

 This sometimes works, sometimes not!
 Every time I do this, my Windows boot's ok but my hdb (windows01-disk2) always came corrupted... I don't know why one volume wokrs and other don't...
 I have the same size for HyperVG01-windows01-diskX on both dom0s...

 I do NOT want to use kpartx or ntfs-3g from my dom0 to read NTFS from Linux. I want a backup of whole disk.

 Can I do this with snapshots:
1) "xm pause windows01" or "xm shutdown windows01";
2) lvcreate -s windows01-disk1-snapshot /dev/mapper/HyperVG01-windows01-disk1
3) "xm unpause windows01" or "xm create /etc/xen/windows01-stubdom";
4) Made a backup using my snapshot. ?

Next time when I restore from snapshot Windows will work without erros?

Can I take a "disk" snapshot of running HVM (With Windows guest) while it's still alive?

Chears,
Thiago

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