[virt-tools-list] Best way to backup my VMs

Bruno Lamps lampss at gmail.com
Tue Apr 12 21:01:15 UTC 2011


I tested the virsh save / copy / virsh restore scheme, but my VM wasn't able
to restore. =~
I tried 2 diferent syntaxes, but with these commands my VM keeps paused. The
following output is printed in the terminal:

lamps at ubunteira:~$ virsh restore balance
erro: Falha ao restaurar o domínio a partir de balance
erro: operation failed: cannot read domain image

lamps at ubunteira:~$ sudo virsh restore /backup/balance.memo
[sudo] password for lamps:
erro: Falha ao restaurar o domínio a partir de /backup/balance.memo
erro: Requested operation is not valid: domain is already active as

lamps at ubunteira:~$ virsh list --all
 Id Nome                 Estado
  2 balance              pausado
  - bfw-t1               desligado
  - bunta11              desligado
  - firebunta-t3         desligado
  - zeus                 desligado

What is happening?

2011/4/12 Richard W.M. Jones <rjones at redhat.com>

> On Tue, Apr 12, 2011 at 05:50:37PM +0200, Frédéric Grelot wrote:
> > An other method to profit from virtualization-enabled server would be to
> take the following actions :
> > -inside guest : turn of server application
> > -inside guest : unmount data disk
> [...]
> > -inside guest : remount and restart server application
> Most guests support some concept of freezing the filesystem which is
> like this but far less disruptive.  See for example:
> http://msdn.microsoft.com/en-us/library/bb968832%28v=vs.85%29.aspx
> http://lwn.net/Articles/287435/
> Also the new virt agent will be able to implement these interfaces
> using some sort of upcall from the host.  It's not actually
> implemented yet AFAIK.
> Rich.
> --
> Richard Jones, Virtualization Group, Red Hat
> http://people.redhat.com/~rjones
> libguestfs lets you edit virtual machines.  Supports shell scripting,
> bindings from many languages.  http://libguestfs.org
> _______________________________________________
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> virt-tools-list at redhat.com
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