[Xen-users] creating a DomU from tar

["Sven Neukirchner" <s.neukirchner@xxxxxxxxx>]

Hi,
I am new with XEN.

I have installed XEN 4 on Debian 6.0.
I am using LVM with XEN.
I created a new DomU with Debian 6.0

Now I am planning a backup solution.

So I made a lvm snapshot:
lvcreate --snapshot --name=samba-snapshot -L 10G
/dev/XEN-Server/vm-samba-disk

after I mounted the snapshot:
mkdir -p /mnt/samba-snapshot
mount /dev/XEN-Server/samba-snapshot /mnt/samba-snapshot

and made a tar archive:
tar -pczf /opt/backups/samba.tar.gz /mnt/samba-snapshot

So far so good.


Now my plan is using the tar archive to create a new DomU.
So I  changed the xen-tools.conf using tar instead of debootstrap:

install-method = tar
install-source = /opt/backups/samba.tar.gz
tar-cmd  = /bin/tar --numeric-owner -xzvf $sr

The hole xen-tools.conf can be found here:
http://pastebin.com/a5GpXHfY

Now I am trying to create a new DomU with this command:
xen-create-image --size=5Gb --memory=254Mb --hostname=VM-samba-restore
--ip=192.168.255.211

and get the following error:


General Information
--------------------
Hostname       :  VM-samba-restore
Distribution   :  squeeze
Mirror         :  http://ftp.de.debian.org/debian/
Partitions     :  swap            256Mb (swap)
                  /               5Gb   (ext3)
Image type     :  full
Memory size    :  254Mb
Kernel path    :  /boot/vmlinuz-2.6.32-5-xen-686
Initrd path    :  /boot/initrd.img-2.6.32-5-xen-686

Networking Information
----------------------
IP Address 1   : 192.168.255.211 [MAC: 00:16:3E:2B:43:B7]
Netmask        : 255.255.255.0
Broadcast      : 192.168.255.255
Gateway        : 192.168.255.254


Creating swap on /dev/XEN-Server/VM-samba-restore-swap
Done

Creating ext3 filesystem on /dev/XEN-Server/VM-samba-restore-disk
Done
Installation method: tar
(Source: /opt/backups/samba.tar.gz)
Done
System installation failed.  Aborting
/tmp/KxbTNiPltf/etc/ssh/ssh_host_rsa_key.pub: No such file or directory


Logfile produced at:
         /var/log/xen-tools/VM-samba-restore.log
Removing swap volume
Removing LVM disk volume


The log file can be found here: http://pastebin.com/4WvsRhSy



I am thankfully for any help.
Sven





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