The wrapper doesn't do anything else than translating command
parameters, but it's load time is significant (because of python imports
mostly). Since we can't use python lvm API from non-root user anyway,
lets drop the wrapper and call `lvm` directly (or through sudo when
necessary).
This makes VM startup much faster - storage preparation is down from
over 10s to about 3s.
QubesOS/qubes-issues#2256
tar can't write archive with _contents_ of block device. We need this to
backup LVM-based disk images. To avoid dumping image to a file first,
create a simple tar archiver just for this purpose.
Python is not the fastest possible technology, it's 3 times slower than
equivalent written in C. But it's much easier to read, much less
error-prone, and still process 1GB image under 1s (CPU time, leaving
along actual disk reads). So, it's acceptable.
First part - handling firewall.xml and rules formatting.
Specification on https://qubes-os.org/doc/vm-interface/
TODO (for dom0):
- plug into QubesVM object
- expose rules in QubesDB (including reloading)
- drop old functions (vm.get_firewall_conf etc)
QubesOS/qubes-issues#1815
Implement required event handlers according to documentation in
qubes.devices.
A modification of qubes.devices.DeviceInfo is needed to allow dynamic,
read-only properties.
QubesOS/qubes-issues#2257
Some tests do not apply, as there is no savefile and attributes
propagation is much simpler. Dropped tests:
- test_000_firewall_propagation
- test_001_firewall_propagation
- test_000_prepare_dvm
QubesOS/qubes-issues#2253
Enable e820_host option for VMs with PCI devices (to allow VM kernel to
deal with address space conflicts). But add a property to allow
disabling it.
FixesQubesOS/qubes-issues#2019
- Use full import paths in qvm-pool
- Add, Remove, Info and List options set `Namespace.command`. This fixes a crash
when `-o dir_path=/mnt/foo` is specified after `-a foo xen`.
- Remove `_List`
- Remove 'added pool' and 'removed pool' messages. Unix tools are quiet
- qvm-pool call app.save()
- Rename create_parser in get_parser
- Rename local_parser variables to just parser
- qvm-pool uses print_table
- Remove old qvm-remove
- Remove a log line from Storage, because it prints confusing lines, like:
Removing volume kernel: /var/lib/qubes/vm-kernels/4.1.13-6/modules.img
This commit eliminates import statements happening in the middle of the
file (between two classes definition). The cycles are still there. The
only magic module is qubes itself.
Leave the 'proper' fix of making this package noarch commented
out for now, to allow this to be merged.
Comments as per the parallel submit to qubes-artwork.
This allows the user to start VM based on "old" system (from R3.x) in
R4.0. For example after restoring from backup, or migration. This also
makes upgrade instruction much easier - no need complex recovery
instruction if one upgrade dom0 before upgrading all the templates.
QubesOS/qubes-issues#1812
