occasional "qvm-prefs: error: no such property: 'netvm'"

[dncohen]

Qubes OS version:

4.0-rc4

Affected TemplateVMs:

fedora-26, I don't believe the problem is related to the template

---

Steps to reproduce the behavior:

not sure.

It happened to me after connecting a laptop to network in one location, closing the lid allowing laptop to sleep, open lid in another location.

Then, appvms are unable to connect to network, even though sys-net shows that it is connected.

Expected behavior:

I would expect qvm-prefs -s sys-firewall netvm sys-net possibly to solve the problem. Instead it gets an error...

Actual behavior:

[dave@dom0 Desktop]$ qvm-prefs -s sys-firewall netvm sys-net
usage: qvm-prefs [-h] [--verbose] [--quiet] [--help-properties] [--get]
                 [--set] [--default]
                 VMNAME [PROPERTY] [VALUE]
qvm-prefs: error: no such property: 'netvm'

General notes:

Under normal circumstances, I can run qvm-prefs -s sys-firewall netvm sys-net without errors. This problem has happened only a couple of times. When it does, I haven't found a way to recover short of rebooting. (I haven't had 4.0 installed for long. I expect this is a real bug)

Here are some things I've tried (without success):

[dave@dom0 Desktop]$ qvm-prefs -s sys-firewall netvm sys-net
usage: qvm-prefs [-h] [--verbose] [--quiet] [--help-properties] [--get]
                 [--set] [--default]
                 VMNAME [PROPERTY] [VALUE]
qvm-prefs: error: no such property: 'netvm'
[dave@dom0 Desktop]$ qvm-shutdown sys-net
sys-net: Shutdown error: There are other VMs connected to this VM: sys-firewall
[dave@dom0 Desktop]$ qvm-kill sys-net
[dave@dom0 Desktop]$ qvm-start sys-net
[dave@dom0 Desktop]$ qvm-prefs -s sys-firewall netvm sys-net
usage: qvm-prefs [-h] [--verbose] [--quiet] [--help-properties] [--get]
                 [--set] [--default]
                 VMNAME [PROPERTY] [VALUE]
qvm-prefs: error: no such property: 'netvm'

Note that qvm-prefs -g sys-firewall does show netvm in the output.

[dave@dom0 Desktop]$ qvm-prefs -g sys-firewall
autostart             -  True
backup_timestamp      U
debug                 D  False
default_dispvm        D  fedora-26-dvm
default_user          D  user
gateway               D  10.137.0.6
gateway6              D
include_in_backups    D  True
installed_by_rpm      D  False
ip                    D  10.137.0.6
ip6                   D
kernel                D  4.14.13-2
kernelopts            D  nopat
klass                 D  AppVM
label                 -  green
mac                   D  00:16:3E:5E:6C:00
maxmem                D  4000
memory                -  500
name                  -  sys-firewall
netvm                 -  sys-net
[snip]

---

Related issues:

[marmarek]

I can confirm that when setting netvm fails, sometimes it result in "no such property" error, instead of real reason.

[marmarek]

I can confirm that when setting netvm fails, sometimes it result in "no such property" error, instead of real reason.

[marmarek]

Actual message can be seen using journalctl in dom0.

[marmarek]

Actual message can be seen using journalctl in dom0.