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

[Bruno Lamps]

I'm using ubuntu 10.10 in this system. I believe ubuntu doesn't come with
selinux installed. =]

2011/4/15 Frédéric Grelot <fredericg_99 at yahoo.fr>

> 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)
>
> ------------------------------
>
> 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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