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

[Frédéric Grelot]

Try disabling selinux ("setenforce 0" I think) 
You may need to have separate directory for backups to avoid this problem (or set up a correct selinux conf) 

----- Mail original -----

> Hi,

> Today I finally could activate the logs, so I tried again to save a
> running guest. When I type "virsh save balance
> /var/lib/libvirt/images/lol.img", the following output is written in
> the balance VM log file (/var/log/libvirt/qemu/balance.log):

> sh: cannot create /var/lib/libvirt/images/lol.img: Permission denied

> I tried chmod 777 in target folder, but it made no difference. What
> user/group/permissions should I use in target directory, where the
> state file will be saved?

> Thanks in advance. ;]

> -----
> Att,
> Bruno Menezes

> On Wed, Apr 13, 2011 at 9:00 AM, Bruno Lamps < lampss at gmail.com >
> wrote:

> > Hi,
> 

> > Yesterday, I've run this command with cron, so I wasn't able to see
> > if virsh save worked OK. Now I tried it in the terminal and virsh
> > save isn't working, I think the problem happens before virsh
> > restore. =D
> 

> > I typed virsh save balance /backup/b.20110313, and the terminal is
> > locked for 20 minutes now, nothing happened. Where can I see some
> > log of what is happening? I've pasted here what I did today in
> > terminal:
> 

> > lamps at ubunteira:~$ virsh
> 
> > Bem vindo ao virsh, terminal interativo de virtualização.
> 

> > Digite: "help" para ajuda com comandos
> 
> > "quit" para sair
> 

> > virsh # list --all
> 
> > Id Nome Estado
> 
> > ----------------------------------
> 
> > - balance desligado
> 

> > - bfw-t1 desligado
> 
> > - bunta11 desligado
> 
> > - firebunta-t3 desligado
> 
> > - zeus desligado
> 

> > virsh # start balance
> 
> > Domínio balance iniciado
> 

> > virsh # list all
> 
> > erro: dado "all" inesperado
> 

> > virsh # list --all
> 
> > Id Nome Estado
> 
> > ----------------------------------
> 
> > 1 balance executando
> 

> > - bfw-t1 desligado
> 
> > - bunta11 desligado
> 
> > - firebunta-t3 desligado
> 
> > - zeus desligado
> 

> > virsh # save balance /backup/b.20110413
> 

> > On Tue, Apr 12, 2011 at 6:18 PM, Eric Blake < eblake at redhat.com >
> > wrote:
> 

> > > On 04/12/2011 03:01 PM, Bruno Lamps wrote:
> > 
> 
> > > > Hi,
> > 
> 
> > > >
> > 
> 
> > > > 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
> > 
> 

> > > Did you name the file "balance" in the 'virsh save domain file'
> > > step?
> > 
> 
> > > 'virsh restore' expects that file name, not a domain name.
> > 
> 

> > > > 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
> > 
> 
> > > > 'balance'
> > 
> 

> > > 'virsh restore' restarts the domain; therefore, if you have
> > 
> 
> > > independently restarted the domain in the meantime, then virsh
> > > restore
> > 
> 
> > > can't do it's job.
> > 
> 

> > > Furthermore, 'virsh save domain file' should not leave the domain
> > 
> 
> > > paused, but should actually change it over to 'shut down'. It may
> > > help
> > 
> 
> > > if you paste your entire session of what you tried, rather than
> > > just
> > > the
> > 
> 
> > > tail end of it.
> > 
> 

> > > --
> > 
> 
> > > Eric Blake eblake at redhat.com +1-801-349-2682
> > 
> 
> > > Libvirt virtualization library http://libvirt.org
> > 
> 

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