I had some issue with fstrim and the missing else had caused the code to continue and fail later with a non-descriptive error message. This commit makes the error message more descriptive and helpful.
This is workaround for missing libxl/libvirt functionality: QubesOS/qubes-issues#1426
Also it should improve system shutdown time, as this is the situation
where all the VMs are shutting down simultaneously.
FixesQubesOS/qubes-issues#1425
Forgetting this leads to misterious errors (VM started with different
kernel than it was just set), so simplify the API.
FixesQubesOS/qubes-issues#1400
When using PVGrub it doesn't make sense to attach modules.img, since
modules are already in the VM. Initramfs there will already handle such
situation and will not try to mount it, when VM's root filesystem
already contains appropriate /lib/modules/`uname -r`.
On the other hand, error earlier when initramfs is missing. While also
not used by PV Grub, the file is always specified in libvirt config and
when missing libvirt will throw rather cryptic error message.
QubesOS/qubes-issues#1354
1. Do not start GUI session - to reduce startup time
2. Use user="root" instead of sudo - not all templates have sudo
installed (for example fedora-21-minimal)
3. Add missing wait=True - otherwise VM may be shutdown during the
operation.
QubesOS/qubes-issues#1268
This process may be running as root in case of default NetVM. But do not
kill it forcibly (through sudo or so), because it may also be stale
pid file. After all, QubesDB should automatically terminate when its VM
is terminated, so this code is already some error handling.
FixesQubesOS/qubes-issues#1331
* qubesos/pr/7:
Don't send screen layout to the VM if we haven't received it from xrandr because this breaks proper initial screen layout set by gui-agent FixesQubesOS/qubes-issues#1305QubesOS/qubes-issues#998
If /etc/localtime in dom0 is a hardlink to zoneinfo file (instead of
symlink) and more than one zoneinfo file is hardlinked to this inode,
appVMs will get invalid timezone, e.g. "Europe/Warsaw\x0aPoland".
Reported by @yaqu, fix provided by @yaqu
FixesQubesOS/qubes-issues#1315
When restarting VM (starting it just after it was shut down), it may
happen that previous `qubesdb-daemon` instance is still running - if VM
doesn't properly terminate the connection, dom0 part will not terminate
immediately, but at next alive check (every 10s). Such `qubesdb-daemon`,
when terminating, will remove pid file and socket file. In case of new
daemon already running it would be those of the new daemon, making the
whole QubesDB of this VM inaccessible for dom0 (`qubesdb-daemon` is
running, but its socket is removed).
To prevent this race, ensure that previous instance is terminated before
starting the new one.
There is no need to manually removing socket file, because if some stale
socket exists, it will be replaced by the new one when new
`qubesdb-daemon` starts up.
QubesOS/qubes-issues#1241
This makes easier to handle some corner cases. One of them is having
entry without `dir_path` defined. This may happen when migrating from R2
(using backup+restore or in-place) while some DisposableVM was running
(even if not included in the backup itself).
Fixesqubesos/qubes-issues#1124
Reported by @doncohen, thanks @wyory for providing more details.
This is required to create VMs in process of building Live system, where
libvirt isn't running.
Additionally there is no udev in the build environment, so needs to
manually create /dev/loop*p* based on sysfs info.
There were two bugs:
1. Firewall configuration wasn't copied during qvm-clone (it is in
separate file, so now it is included in vm.clone_disk_files).
2. Non-default firewall configuration wasn't stored in qubes.xml. This
means that initially DispVM got proper configuration (inherited from
calling VM), but if anything caused firewall reload (for example
starting another VM), the firewall rules was cleared to default state
(allow all).
Fixesqubesos/qubes-issues#1032
Most of them do not need GUI (especially those started from dom0), so
speed the things up a little (no need to wait for guid). But if some
service will need GUI access, there is "gui" parameter.
We use only one device-mapper layer for HVMs, and this isn't the same as
for PV - it is that one, which PV does in initramfs.
Device-mapper layers summary for template-based VMs:
PV: root.img+root-cow.img (dom0) -> xvda, xvda+volatile.img (VM)
HVM: root.img+volatile.img (dom0)
Remove artificial attribute '_start_guid_first' and use
guiagent_installed directly. This way starting guid for stubdom in debug
mode, even if guiagent_installed is set is much clearer.
This allows to assign PCI device to the VM, even if it doesn't support
proper reset. The default behaviour (when the value is True) is to not
allow such attachment (VM will not start if such device is assigned).
Require libvirt patch for this option.
Using QID for DispVM ID was a bad idea in terms of anonymity:
1. It gives some clue about VMs count in the system. In case of large
numbers, this can be quite unique.
2. If new DispVM is started just after closing previous one, it will get
the same ID, and in consequence the same IP. In case of using TorVM,
this leads to use the same circuit as just closed DispVM.
Fixesqubesos/qubes-issues#983
At least to have there info about its backup.
This was already done in commit
dc6fd3c8f3, but later was erroneously
reverted during migration to libvirt.
Fixesqubesos/qubes-issues#958
This can happen when initially there was no default netvm, some domain
was started, then default netvm was set and started - then
netvm.connected_vms will contain domains which aren't really connected
there.
Especially this was happening in firstboot.
Otherwise it would point at the same object and for example changing
vm.services[] in one VM will change that also for another. That link
will be severed after reloading the VMs from qubes.xml, but at least in
case of DispVM startup its too late - vm.service['qubes-dvm'] is set for
the DispVM template even during normal startup, not savefile preparation.
