Detect when the same PCI device got assigned to more than one VM

[marmarek]

Reported by joanna on 14 Apr 2012 12:38 UTC
... this is especially important in the following practical case:

1. User start VM1, which got some PCI device assigned.

2. The user then stopped the VM1, and as soon as it disappeared from the Running VMs List in the manager, the user starts VM2, which also got the same PCI device assigned. Unfortunately, the VM2 will not start now, as the pciback is still busy cleaning up for the VM1.

Now, the only way to get the PCI device working in the VM2, is to: 1) stop VM2, wait until it fully stops (qvm-ls/xl list is your friend), then 2) start VM1, 3) stop VM1, 4) wait until it fully stops (qvm-ls/xl list), and then 5) start VM2 again.

This is connected with the ticket #520, BTW.

Migrated-From: https://wiki.qubes-os.org/ticket/522

[marmarek]

Modified by marmarek on 18 Apr 2012 09:11 UTC

[marmarek]

Modified by marmarek on 18 Apr 2012 09:11 UTC

[marmarek]

Comment by marmarek on 18 Apr 2012 15:24 UTC
http://git.qubes-os.org/?p=marmarek/core.git;a=commit;h=abaea52da05265092a8e94e798e57dcd2e2b644c

[marmarek]

Comment by marmarek on 18 Apr 2012 15:24 UTC
http://git.qubes-os.org/?p=marmarek/core.git;a=commit;h=abaea52da05265092a8e94e798e57dcd2e2b644c