" Unmount "

Proxmox/OpenVZ Can’t umount (unmount) device or resource busy

Recently when working on an OpenVZ container I was attempting to create a backup.  While doing so I kept running into a problem where the server wouldn’t let me unmount the container in order to create the backup.  The error you may see in this instance would say “Can’t umount /var/lib/vz/root/OpenVZID device or resource busy”, or “Can’t umount /var/lib/vz/root/100: Device or resource busy TASK ERROR: command ‘vzctl umount 100’ failed: exit code 51″, in this case the container being 100.  Here’s how I was able to fix it …  (more…)

Can’t remove an OpenVZ container? How to unmount OpenVZ container and remove it.

When you start using OpenVZ you will come to find that there are a lot of very useful command line tools…here’s a couple people commonly forget:

CID = Container ID