Bash Command to Check Container Disk Space in Proxmox/ OpenVZ

Bash Command to Check Container Disk Space in Proxmox/ OpenVZ

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proxmox logo gradKeeping an eye on all of your containers disk space can be time consuming if done one by one. Luckily, the vzlist command gives us access to many of the data and counters associated with each container.

Running vzlist on it’s own will give a list of the currently running containers and a few extra columns of information such as IP address and hostname.

You might be thinking that the above command doesn’t show anything about containers which are currently turned off, or about disk space. You’d be right!

Adding the –all switch will include all containers, regardless of their running state.

To add the disk space information we add the –output switch followed by the column names we want to display. For disk space, the column name is helpfully named diskspace so the command will look like this:

We now see the disk space of all of our containers, but with a problem. We have no idea (although in this example we do because we only have one container) which container the disk space output is for. We need to add a few more columns to the –output switch such as ctid and hostname.  (see below for a complete list of output columns)

The last trick here is to add a sort using the –sort switch and the column name

Let’s put all that together, plus a spot of awk magic to get a nice disk full percentage that we can work with:


Complete list of vzlist column headings

You can get a complete list of vzlist column headings with the following command:


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