[Fedora-xen] (no subject)

[John Sanabria]

Thanks Daniel,

i did the next:

1- use dd command to get a copy from a vm:
    dd if=00_16_3E_32_0F_0F of=copia-00_16_3E_32_0F_0F
2- then, ( probably big mistake :-( ) use virsh command:
    virsh dumpxml 00_16_3E_32_0F_0F > ~/copia-vm.cfg
3- i modify the copia-vm.cfg and change the name field and remove the mac
address field, defined inside of the interface tag:
--------------------- virsh dumpxml output ---------------------
<domain type='xen' id='-1'>
  <name>copia-00_16_3E_32_0F_0F</name>
  <uuid>dd9fe09e1155f9223779b6c28bf43488</uuid>
  <bootloader>/usr/bin/pygrub</bootloader>
  <os>
    <type>linux</type>
  </os>
  <memory>262144</memory>
  <vcpu>1</vcpu>
  <on_poweroff>destroy</on_poweroff>
  <on_reboot>restart</on_reboot>
  <on_crash>restart</on_crash>
  <devices>
    <interface type='bridge'>
      <source bridge='xenbr0'/>
    </interface>
    <disk type='file' device='disk'>
      <driver name='file'/>
      <source file='/var/lib/xen/images/copia-00_16_3E_32_0F_0F'/> <target
dev='xvda'/>
    </disk>
  </devices>
</domain>
--------------------- virsh dumpxml output ---------------------
4- virsh define copia-00_16_3E_32_0F_0F, (am i (re-)define the domain
00_16_3E_32_0F_0F ???)

5- virsh start copia-00_16_3E_32_0F_0F (boot ok!, can get into the root
account, ping google.com, works! :-D)

6- but i don't need this domain anymore 'virsh undefine
copia-00_16_3E_32_0F_0F'

7- boot again the original vm:

[root at shutdown ~]# virsh start 00_16_3E_32_0F_0F
libvir: Xen Daemon error : GET operation failed:
error: failed to get domain '00_16_3E_32_0F_0F'

8- oops! :-(

9- i try to "recreate" the xml file,
 a- [root at shutdown ~]# virsh dumpxml /var/lib/xen/images/00_16_3E_32_0F_0F
> original-vm.cfg
libvir: Xen Daemon error : GET operation failed:
error: failed to get domain '/var/lib/xen/images/00_16_3E_32_0F_0F'
 b- [root at shutdown ~]# virsh dumpxml 00_16_3E_32_0F_0F > original-vm.cfg
libvir: Xen Daemon error : GET operation failed:
error: failed to get domain '00_16_3E_32_0F_0F'

is possible bring to alive the domain 00_16_3E_32_0F_0F?

thanks!



> On Wed, Jun 20, 2007 at 02:38:13PM -0400, John Sanabria wrote:
>> Thanks Daniel for the answer,
>> according to Xen Documentation (3.0), you can start a domain using: xm
create <config_file>
>> The <config_file> must be located in /etc/xen directory. However, for Xen
>> 3.1 the configuration file is not "necessary", then, you can submit the
command,
>> virsh start <image_filename>
>> and the domain is created. The <image_filename> must be a file located in
>> /var/lib/xen/images directory. But, where is located the configuration
file for a domain in xen 3.1? Thanks.
>
> Use   virsh dumpxml   <guest>    to get it
>
> And once you've edited the XML, use   virsh define <xmlfile>  to load in
the new config.
>
> Regards,
> Dan.
> --
> |=- Red Hat, Engineering, Emerging Technologies, Boston.  +1 978 392
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