[libvirt-users] ISO refuses to let vm starts (and is not mentioned in config)

[Mauricio Tavares]

On Thu, Mar 6, 2014 at 12:16 AM, Mauricio Tavares <raubvogel at gmail.com> wrote:
>       Trying to start one of my vms, a centos one at that, but am
> getting the following message:
>
> [root at vmhost ~]# virsh start voip --paused
> error: Failed to start domain voip
> error: cannot open file
> '/var/tmp/FreePBX-5.211.65-3-x86_64-Full-1388073872.iso': No such file
> or directory
>
> [root at vmhost ~]#
>
> But, virsh dumpxml voip shows no info onto the .iso
>
>     <disk type='file' device='disk'>
>       <driver name='qemu' type='raw' cache='none' io='native'/>
>       <source file='/dev/vmhost_vg0/voip'/>
>       <target dev='vda' bus='virtio'/>
>       <address type='pci' domain='0x0000' bus='0x00' slot='0x04'
> function='0x0'/>
>     </disk>
>     <disk type='file' device='cdrom'>
>       <driver name='qemu' type='raw'/>
>       <target dev='hda' bus='ide'/>
>       <readonly/>
>       <address type='drive' controller='0' bus='0' target='0' unit='0'/>
>     </disk>
>     <disk type='file' device='cdrom'>
>       <driver name='qemu' type='raw'/>
>       <target dev='hdb' bus='ide'/>
>       <readonly/>
>       <address type='drive' controller='0' bus='0' target='0' unit='1'/>
>     </disk>
>
> Log file is not particularly helpful:
>
> 2014-03-04 22:57:46.121+0000: shutting down
> 2014-03-05 23:42:18.528+0000: shutting down
> 2014-03-05 23:47:07.375+0000: shutting down
> 2014-03-06 00:56:32.908+0000: shutting down
> 2014-03-06 01:11:32.582+0000: shutting down
>
> So, the question is how did this iso got involved in this specific vm?
> I can start my other vms without them even knowing about this .iso.

      This might not be relevant but many moons ago when I would
create a vm in this host, I would put the OS install iso in /var/tmp.
I did create a freebsd vm there before, but since I built a second vm
host (esxi), I moved my testing vms there and kept the production ones
in the qemu-based one. The point of this long and irrelevant sappy
story is that it seems libvirt remembers that I used that iso before,
kinda like what virtualbox does. I know how to make virtuabox forget
about an iso/disk or find which vm is using that, but not on libvirt.