[Pkg-libvirt-maintainers] Bug#777154: Error starting domain: unable to set user and group to '123:138'

[Mathieu Malaterre]

Package: virt-manager
Version: 1:1.0.1-3
Severity: important

Currently I cannot mount *.iso if they are on my NFS share.
virt-manager will fail with:

Error starting domain: unable to set user and group to '123:138' on
'/media/nas/Tools/BizSpark/Windows7/virtio/virtio-win-0.1-81.iso':
Permission denied

Traceback (most recent call last):
  File "/usr/share/virt-manager/virtManager/asyncjob.py", line 91, in cb_wrapper
    callback(asyncjob, *args, **kwargs)
  File "/usr/share/virt-manager/virtManager/asyncjob.py", line 127, in tmpcb
    callback(*args, **kwargs)
  File "/usr/share/virt-manager/virtManager/domain.py", line 1355, in startup
    self._backend.create()
  File "/usr/lib/python2.7/dist-packages/libvirt.py", line 999, in create
    if ret == -1: raise libvirtError ('virDomainCreate() failed', dom=self)
libvirtError: unable to set user and group to '123:138' on
'/media/nas/Tools/BizSpark/Windows7/virtio/virtio-win-0.1-81.iso':
Permission denied

where:

$ mount
[...]
//192.168.0.32/Volume_1 on /media/nas type cifs
(rw,relatime,vers=1.0,sec=ntlm,cache=strict,username=mathieu,uid=1000,forceuid,gid=0,noforcegid,addr=192.168.0.32,unix,posixpaths,serverino,acl,rsize=1048576,wsize=65536,actimeo=1)

Of couse the solution is to copy the *.iso file in /tmp, but that is
really painful.