Improve error message when trying to start a VM with invalid device attached

[marmarek]

Currently the message is not helpful at all:

[truthlighting@dom0 ~]$ qvm-start win7 --cdrom=/run/media/truthlighting/GRMCHPXFRER_EN_DVD/
--> Loading the VM (type = HVM)...
Traceback (most recent call last):
  File "/usr/bin/qvm-start", line 125, in <module>
    main()
  File "/usr/bin/qvm-start", line 109, in main
    xid = vm.start(verbose=options.verbose, preparing_dvm=options.preparing_dvm, start_guid=not options.noguid, notify_function=tray_notify_generic if options.tray else None)
  File "/usr/lib64/python2.7/site-packages/qubes/modules/01QubesHVm.py", line 342, in start
    return super(QubesHVm, self).start(*args, **kwargs)
  File "/usr/lib64/python2.7/site-packages/qubes/modules/000QubesVm.py", line 1843, in start
    self.libvirt_domain.createWithFlags(libvirt.VIR_DOMAIN_START_PAUSED)
  File "/usr/lib64/python2.7/site-packages/libvirt.py", line 1037, in createWithFlags
    if ret == -1: raise libvirtError ('virDomainCreateWithFlags() failed', dom=self)
libvirt.libvirtError: internal error: libxenlight failed to create new domain 'win7'

See #1617 for example.

[marmarek]

Automated announcement from builder-github

The package qubes-core-dom0-3.2.4-1.fc23 has been pushed to the r3.2 testing repository for dom0.
To test this update, please install it with the following command:

sudo qubes-dom0-update --enablerepo=qubes-dom0-current-testing

Changes included in this update

[marmarek]

Automated announcement from builder-github

The package qubes-core-dom0-3.2.4-1.fc23 has been pushed to the r3.2 testing repository for dom0.
To test this update, please install it with the following command:

sudo qubes-dom0-update --enablerepo=qubes-dom0-current-testing

Changes included in this update

[marmarek]

Automated announcement from builder-github

The package qubes-core-dom0-3.1.17-1.fc20 has been pushed to the r3.1 testing repository for dom0.
To test this update, please install it with the following command:

sudo qubes-dom0-update --enablerepo=qubes-dom0-current-testing

Changes included in this update

[marmarek]

Automated announcement from builder-github

The package qubes-core-dom0-3.1.17-1.fc20 has been pushed to the r3.1 testing repository for dom0.
To test this update, please install it with the following command:

sudo qubes-dom0-update --enablerepo=qubes-dom0-current-testing

Changes included in this update

[marmarek]

Automated announcement from builder-github

The package qubes-core-dom0-3.1.17-1.fc20 has been pushed to the r3.1 stable repository for dom0.
To install this update, please use the standard update command:

sudo qubes-dom0-update

Or update dom0 via Qubes Manager.

Changes included in this update

[marmarek]

Automated announcement from builder-github

The package qubes-core-dom0-3.1.17-1.fc20 has been pushed to the r3.1 stable repository for dom0.
To install this update, please use the standard update command:

sudo qubes-dom0-update

Or update dom0 via Qubes Manager.

Changes included in this update

[marmarek]

Automated announcement from builder-github

The package qubes-core-dom0-3.2.7-1.fc23 has been pushed to the r3.2 stable repository for dom0.
To install this update, please use the standard update command:

sudo qubes-dom0-update

Or update dom0 via Qubes Manager.

Changes included in this update

[marmarek]

Automated announcement from builder-github

The package qubes-core-dom0-3.2.7-1.fc23 has been pushed to the r3.2 stable repository for dom0.
To install this update, please use the standard update command:

sudo qubes-dom0-update

Or update dom0 via Qubes Manager.

Changes included in this update