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Re: [libvirt] Libvirt synchronous hooks

On Tue, Jun 29, 2010 at 04:03:57PM +0200, Radek Hladik wrote:
> I am trying Libvirt synchronous hooks and I would like to ask a
> question. I would like to use the machine start (qemu+kvm) hook to
> set up the storage for the machine. I already mentioned my setup in
> this mailing list but for now it is only important that VM storage
> is a md raid constructed from iSCSI disks. The VM's config is using
> simple file device:
> <disk type='file' device='disk'>
>   <driver name='qemu' type=''/>
>   <source
> file='/dev/disk/by-id/md-uuid-e464a51e:f61e98b4:bfe78010:bc810f04'/>
>    <target dev='vda' bus='virtio'/>
>     <address type='pci' domain='0x0000' bus='0x00' slot='0x05'
> function='0x0'/>
>  </disk>
> Stopping the array from stop hook works perfectly however it seems
> that on the startup  the storage is checked before the hook is
> executed. At least I do get errors that the storage file
> (/dev/disk/by-id/md-uuid-....) does not exist and my hook is not
> called.
> I would say that I am hooking on wrong places that I should hook on
> storage startup/shutdown but as far as I know there are no hooks for
> storage drivers. Are there any plans in this area? Or is there any
> other way how to do it that I do not see?

  Old mail, but stll valid :-)
  Yes adding more hooks as need arise sounds fine to me, especially
around storage/interface setups.


Daniel Veillard      | libxml Gnome XML XSLT toolkit  http://xmlsoft.org/
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http://veillard.com/ | virtualization library  http://libvirt.org/

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