vboxmanage modifymedium lock not released immediately

[Mrpn]

This is a host only issue.

Sometimes the lock of a medium during vboxmanage is still in effect after the command has completed. This is especially when the host cpu is heavily loaded. The following seems to work with a sleep trick. (Delay the next command, so the lock is released.)

vboxmanage modifymedium "$parentmedium" --compact && sleep 10s && touch -r "$parentmedium" "${parentmedium}.stamp"

vboxmanage storageattach "${parentvm}" --storagectl "${storagename}" --port ${storageport} --device ${storagedevice} --type hdd --medium emptydrive && sleep 10s

vboxmanage modifymedium "${parentmedium}" --type immutable && sleep 10s

Example: ​https://github.com/nipatriknilsson/vboxcloneimmutable