The Python version (and pylint) are new enough finally.
Adjust QubesVM.run* functions for now.
Python 3.8 brings also AsyncMock() which makes tests slightly less ugly.
Similart to property-reset:xid, emit property-reset:stubdom_xid when
domain is started/stopped. This allows client side of the Admin API
(qubes-core-admin-client) to invalidate the cache when necessary.
Found by audio tests: #352
The revisions_to_keep should be inherited from the pool by default (or
whatever else logic is in the storage pool driver). When creating VM in
a specific pool, volumes config is re-initialized to include right
defaults. But the config cleaning logic in `_clean_volume_config()`
failed to remove revisions_to_keep property initialized by the default
pool driver. This prevented new pool driver to apply its own default
logic.
An extreme result was inability to create a VM in 'file' pool at all,
because it refuses any revisions_to_keep > 1, and the default LVM
pool has revisions_to_keep = 2.
Those are only some cases, the most obvious ones:
- defaults inherited from a template
- xid and start_time on domain start/stop
- IP related properties
- icon
QubesOS/qubes-issues#5834
There was also one case of triggering property-{del => reset}
synthetically on default value change. Adjust it too and drop -pre-
event call in that case.
QubesOS/qubes-issues#5834
Prior to this commit, a properly configured Linux HVM would not
transition from the 'Transient' state to the 'Running' state according
to qvm-ls output, even if the HVM in question had the 'qrexec' feature
disabled.
This issue is caused by an unconditional qrexec check in the
'on_domain_is_fully_usable' method, and is resolved by adding
a check that short-circuits the qrexec check if the aforementioned
feature is not enabled for the VM in question.
Handle this case specifically, as way too many users ignore the message
during installation and complain it doesn't work later.
Name the problem explicitly, instead of pointing at libvirt error log.
FixesQubesOS/qubes-issues#4689
Similar to domain-start-failed, add an event fired when
domain-pre-shutdown was fired but the actual operation failed.
Note it might not catch all the cases, as shutdown() may be called with
wait=False, which means it won't wait fot the actual shutdown. In that
case, timeout won't result in domain-shutdown-failed event.
QubesOS/qubes-issues#5380
Check early (but after grabbing a startup_lock) if VM isn't just
removed. This could happen if someone grabs its reference from other
places (netvm of something else?) or just before removing it.
This commit makes the simple removal from the collection (done as the
first step in admin.vm.Remove implementation) efficient way to block
further VM startups, without introducing extra properties.
For this to be effective, removing from the collection, needs to happen
with the startup_lock held. Modify admin.vm.Remove accordingly.
If kernel package ships default-kernelopts-common.txt file, use that
instead of hardcoded Linux-specific options.
For Linux kernel it may include xen_scrub_pages=0 option, but only if
initrd shipped with this kernel re-enable this option later.
QubesOS/qubes-issues#4839QubesOS/qubes-issues#4736
First of all, do not try to call those services in VMs not having qrexec
installed - for example Windows VMs without qubes tools.
Then, even if service call fails for any other reason, only log it but
do not prevent other services from being called. A single uncooperative
VM should generally be able only to hurt itself, not break other VMs
during suspend.
FixesQubesOS/qubes-issues#3489
If default-kernelopts-pci.txt is present, it will override default
built-in kernelopts for the VMs with PCI device assigned.
Similarly if default-kernelopts-nopci.txt is present, it will override
default kernelopts for VMs without PCI devices.
For template-based VMs, kernelopts of the template takes precedence over
default-kernelopts-nopci.txt but not default-kernelopts-pci.txt.
FixesQubesOS/qubes-issues#4839
Instead of checking if domain is still running/paused, try to kill it
anyway and ignore appropriate exception. Otherwise domain could die
before the check and killing.
The new property is meant for management stack (Salt) to set which DVM
template should be used to maintain given VM. Since the DispVM based on
it will be given ultimate control over target VM (qubes.VMShell
service), it should be trusted. The one pointed to by default_dispvm
not necessary is one.
The property defaults to the value from the template (if any), and then
to a global management_dispvm property. By default it is set to None.
Signed-off-by: Marek Marczykowski-Górecki <marmarek@invisiblethingslab.com>
Use maxmem=0 for disabling dynamic memory balance, instead of cryptic
service.meminfo-writer feature. Under the hood, meminfo-writer service
is also set based on maxmem property (directly in qubesdb, not
vm.features dict).
Having this as a property (not "feature"), allow to have sensible
handling of default value. Specifically, disable it automatically if
otherwise it would crash a VM. This is the case for:
- domain with PCI devices (PoD is not supported by Xen then)
- domain without balloon driver and/or meminfo-writer service
The check for the latter is heuristic (assume presence of 'qrexec' also
can indicate balloon driver support), but it is true for currently
supported systems.
This also allows more reliable control of libvirt config: do not set
memory != maxmem, unless qmemman is enabled.
memory != maxmem only makes sense if qmemman for given domain is
enabled. Besides wasting some domain resources for extra page tables
etc, for HVM domains this is harmful, because maxmem-memory difference
is made of Popupate-on-Demand pool, which - when depleted - will kill
the domain. This means domain without balloon driver will die as soon
as will try to use more than initial memory - but without balloon driver
it sees maxmem memory and doesn't know about the lower limit.
FixesQubesOS/qubes-issues#4135
It makes a lot of sense to call long-running operations in that event
handler, including calling back into the VM. Allow that by using
fire_event_async, not just fire_event.
Also, document the event.
vm.kill() will try to get vm.startup_lock, so it can't be called while
holding it already.
Fix this by extracting vm._kill_locked(), which expect the lock to be
already taken by the caller.
