LXC – quota inside container

lxcquota

Is it possible to use disk quota inside a LXC container?

I'm using LVM (ext4) as rootfs for the container. I don't now how to add the mount options to /etc/fstab properly.

The /etc/fstab of the container:

rootfs / rootfs rw,usrjquota=aquota.user,grpjquota=aquota.group,jqfmt=vfsv0 0 0

This is what quotacheck -cug / returns:

quotacheck: Mountpoint (or device) / not found or has no quota enabled.
quotacheck: Cannot find filesystem to check or filesystem not mounted with quota option.

Output of mount:

http://pastebin.com/33AF62pu

Best Answer

Assuming your root file system is formatted in a file system with quota support, like ext3 or ext4, add usrquota,grpquota to /etc/fstab entry under options section (fourth field), and then run (assuming / is the file system mount point)

mount -o remount /

This assumes there is a separate file system for each LXC instance, else all instances sharing the same file system will be affected.

Make sure that the quota program is installed (how this is done varies depending on your OS version)

Related Solutions

Enabling quota and doing quotacheck on reboot

Ubuntu takes care of installing the startup script and periodic quota warnings. Look at the filelist of the quota package, /etc/init.d/quota turns quotas on:

on=/sbin/quotaon
# snip
ALLFLAGS=-aug
# snip
$on $ALLFLAGS

The cron file at /etc/cron.daily/quota runs /usr/sbin/warnquota. Note that quota's are working realtime, warnquota mails the user if they've exceeded their soft limit.

LXC container templates

Yes, an LXC container is some config files and a directory within the whole server. If you copy this directory and config files and adjust the parameters you can use it as a template. Just tar it and untar it to the new machine's directory.

Best Answer

Related Solutions

Enabling quota and doing quotacheck on reboot

LXC container templates

Related Topic