Add dummy TestVolume with empty create() method. Other core code
requires also TestPool.get_volume implemented, so add that too (naive
version remembering instances returned from TestPool.init_volume).
There is intentionally no default template in terms of qubes.property
definition, to not cause problems when switching global default_template
property - like breaking some VMs, or forcing the user to shutdown all
of them for this. But this also means it shouldn't be allowed to reset
template to "default" value, because it will result in a VM without
template at all.
FixesQubesOS/qubes-issues#3115
* qubesos/pr/150:
qubes/tests: moar fixes
test-packages: add missing libvirt classes
qubes/tests: do not deadlock on .drain()
qubes/vm: put name= first in __repr__
tests: fix some memory leaks
tests: complain about memory leaks
tests: use one event loop and one libvirtaio impl
'dispvm_allowed' name was confusing, because it suggested being able to
spawn new DispVMs, not being a template for DispVM.
FixesQubesOS/qubes-issues#3047
Don't set 'source' volume in various places (each VM class constructor
etc), do it as part of volume initialization. And when it needs to be
re-calculated, call storage.init_volume again.
This code was duplicated, and as usual in such a case, those copies
were different - one have set 'size', the other one not.
QubesOS/qubes-issues#2256
Use minimal TestPool(), instead of Mock().
This allow effectively compare Volume instances (init_volume with the
same parameters return equal Volume instance).
Reference objects, not their IDs - this way when object is modified, it
is visible everywhere where it is used. Main changes:
- volume.pool - Pool object
- volume.source - Volume object
Since volume have Pool object reference now, move volume related
functions into Volume class (from Pool class). This avoids horrible
`storage.get_pool(volume).something(volume)` construct.
One issue here is since volume.source reference a Volume object from a
different VM - VM's template, now VM load order is important. Since we
don't have control over it, initialize vm.storage when needed - possibly
while initializing storage of different VM. Since we don't have cycles
in AppVM-TemplateVM dependencies, it is safe.
Also, since this commit, volume.source (if defined) always points at
volume of the same name from VM's template. Using volumes with something
else as a source is no longer supported.
QubesOS/qubes-issues#2256
