When called from libvirt->libxl, there is libvirt lock taken on that
domain. Because of that, we can't access libvirt domain, so basically
any runtime information. Without that --offline-mode, script waited on
the lock and then was killed by libxl after a timeout - before actually
committing the changes.
Mostly done. Things still using xenstore/not working at all:
- DispVM
- qubesutils.py (especially qvm-block and qvm-usb code)
- external IP change notification for ProxyVM (should be done via RPC
service)
Forking daemon after initializing hypervisor connection can cause
problems (and actually does in case of libvirt).
To notify systemd when daemon is ready use notify socket (previously it
was termination of parent process).
Not only refresh the info about mounted devices, but also check for
others - detected before xenstored was running. Because of recent change
in udev rules (adding flock) it shouldn't deadlock now.
It is common for both dom0 and VM, and also quite linux-specific
(other OSes will need other implementation). So move to linux-specific
repo (not dom0-specific).
