On 7/2/24 16:19, daggs wrote:
>> thanks, seems like I'm past this part, the vm start fails
because of insufficient permissions to detach/reattach the pci nodes, I assumed that there
is no fast solution so
>> I fixed it with a script that uses doas to preform the detach/reattach.
>
> No sysadmin wants to allow regular users to bind PCI devices to "random"
> drivers, surely. PCI devices must be "detached" (i.e. bound to vfio
> driver) by sysadmin (e.g. virsh -c qemu:///system nodedev-detach ...)
> BEFORE qemu:///session domain wants to use the device.
so I should call virsh -c qemu:///system nodedev-detach from within the libvirt hook?
wont that might cause a hangup?
I did got that in some scenarios.
No, calling libvirt from hooks is strongly discouraged as deadlocks are
likely to occur. Just detach PCI devices before starting any
qemu:///session domain. Either right at startup (write an init service),
do that manually, doesn't matter really.
Michal