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

proxmox 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 …

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Proxmox : starting worker failed: unable to parse worker upid

proxmox

Proxmox : starting worker failed: unable to parse worker upid

First of all, back up the following files:

# nano /usr/share/perl5/PVE/Tools.pm
# nano /usr/share/pve-manager/ext4/pvemanagerlib.js

 

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