I use NFS for having the guests mount separate directories on the host, 
then I rsync to these from the UMLs. Works for me, and is easily cron:able 
from inside the UMLs. This was convenient since my host have a directory 
with shared resources for the UMLs anyway, so NFS was already set up.

If you're working in a safe environment I guess you could also have the 
host mount the UMLs' roots via NFS and have the host perform the rsync.

But I realize that if you're hesitant to install SSH, NFS isn't a much 
better alternative. :-)

   // Joel

On Tue, 23 Jan 2007, Antoine Martin wrote:

> How about attaching a disk with mconsole, mount it in the guest, copy
> the data, umount, detach disk. done?
>
> Chris Lightfoot wrote:
>> On Tue, Jan 23, 2007 at 12:14:53PM -0500, Jonas Meyer wrote:
>>> Hmm...  What is the preferred method of backup for a VM then?  As I
>>> said, I'd rather not install ssh on every guest if I don't have to.
>>
>> depends how consistent a backup you need and what level of
>> resource usage you can tolerate. e.g. you could pause the
>> VM, copy the whole filesystem, and back up the result
>> (accepting that you'll modify the copy when mounting it).
>> or you could make a snapshot of the block device
>> underlying the VMs' filesystems and then back that up
>> however you want. etc.
>>
>
>
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