Know the used storage of each single container

LXD
, ,
1

I have about 50 containers on one btrfs storage pool (lxd with snap and default.img)

How can I know the used storage of each single container?

2

The lxc info <instance> command will show root disk usage.
Keep in mind on BTRFS LXD uses snapshots of the source image so it may be smaller than you are expecting.

3

Thanks for the reply.

This solution returns a somewhat “wrong” or rather not real parameter.

I can get the correct parameter with the following command executed inside the container:

  • du -hs -m --exclude=/proc --exclude=/sys --exclude=/dev /

However, this method uses a lot of resources, and if we wanted to calculate the amount of storage used every “x” minutes, I would have an unjustified consumption of the entire server on 50 containers.

Do you have any recommendations?

4

It does not, or I am wrong?

lxc info proxy
Name: proxy
Status: RUNNING
Type: container
Architecture: x86_64
PID: 2394
Created: 2023/12/02 13:01 CET
Last Used: 2023/12/08 16:21 CET

Resources:
Processes: 17
CPU usage:
CPU usage (in seconds): 4
Memory usage:
Memory (current): 24.85MiB
Network usage:
eth0:
Type: broadcast
State: UP
Host interface: veth8f829381
MAC address: 00:16:3e:49:e1:2d
MTU: 1500
Bytes received: 3.86MB
Bytes sent: 25.30kB
Packets received: 430
Packets sent: 286
IP addresses:
inet: 192.168.0.12/28 (global)
inet6: fe80::216:3eff:fe49:e12d/64 (link)
lo:
Type: loopback
State: UP
MTU: 65536
Bytes received: 3.94MB
Bytes sent: 3.94MB
Packets received: 559
Packets sent: 559
IP addresses:
inet: 127.0.0.1/8 (local)
inet6: ::1/128 (local)