Proxmox trying to acquire lock… TASK ERROR: can’t lock file ‘/var/lock/qemu-server/lock-102.conf’ – got timeout
If Proxmox won’t start aVM with an error like this:
trying to acquire lock... TASK ERROR: can't lock file '/var/lock/qemu-server/lock-102.conf' - got timeout
rm /var/lock/qemu-server/lock-102.conf
Solution two
qm unlock <ID>
Then try to restart the VM and it should be good.