Can't get quotas working on Ubuntu Server 12.04 on EC2 instance

Webmin
1

I’ve got virtualmin up and running and things are good. However, I’m having trouble getting quotas to work (I would like to be able to enforce disk quotas for email accounts).

I am using Ubuntu Server 12.04 on an Amazon AWS EC2 instance. It’s the default Ubuntu AMI (aside from virtualmin) - I haven’t modified anything.

When I try to enable quotas via Webmin -> System -> Disk Quotas, I get the error:

quotaon: using //aquota.user on /dev/disk/by-label/cloudimg-rootfs [/]: No such process quotaon: Quota format not supported in kernel.

I’ve done some Googling but can’t figure out what the issue is and I don’t want to modify configs at the OS level for fear of interfering with or breaking Virtualmin / Webmin.

fstab already has quotas enabled (I did not change this):
LABEL=cloudimg-rootfs / ext4 grpquota,usrquota,rw 0 0

Any ideas on how I can fix this?

Thanks!

2

Howdy,

Hmm, that’s an odd one! What output do you receive if you run the command “mount”?

Also, what kernel are you using? You can determine that by running “uname -a”.

-Eric

3

Hi Eric,

Kernel is: Linux [FQDN] 3.2.0-24-virtual #39-Ubuntu SMP Mon May 21 18:44:18 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux

The “mount” command returns:

/dev/xvda1 on / type ext4 (rw,grpquota,usrquota)
proc on /proc type proc (rw,noexec,nosuid,nodev)
sysfs on /sys type sysfs (rw,noexec,nosuid,nodev)
none on /sys/fs/fuse/connections type fusectl (rw)
none on /sys/kernel/debug type debugfs (rw)
none on /sys/kernel/security type securityfs (rw)
udev on /dev type devtmpfs (rw,mode=0755)
devpts on /dev/pts type devpts (rw,noexec,nosuid,gid=5,mode=0620)
tmpfs on /run type tmpfs (rw,noexec,nosuid,size=10%,mode=0755)
none on /run/lock type tmpfs (rw,noexec,nosuid,nodev,size=5242880)
none on /run/shm type tmpfs (rw,nosuid,nodev)

/dev/xvda1 is the same as /dev/disk/by-label/cloudimg-rootfs (which webmin was referencing)

ls -la /dev/disk/by-label/cloudimg-rootfs
lrwxrwxrwx 1 root root 11 Sep 30 06:09 /dev/disk/by-label/cloudimg-rootfs -> …/…/xvda1

Thanks for your help!

4

I just hit this same issue.

Turns out that quota support was removed from the “-virtual” kernels in recent versions of Ubuntu.

The solution here worked for me: http://askubuntu.com/a/165298

5

Thanks, this worked perfectly. :slight_smile:

(not sure why they would remove such a useful feature from the standard kernels, but there we go…)

Cheers!

6

(double posted by mistake - carry on)

7

Thanks for letting us know about that issue, and how you fixed it!

8

The tip at http://askubuntu.com/a/165298 didn’t work for me, but andrechek helped me on in #virtualmin

These commands did the trick:

aptitude install linux-image-extra-virtual find /lib/modules | grep quota # not strictly necessary, but will show which libraries are needed: see http://pastebin.com/GDS6dVi1 depmod -a modprobe quota_v1 modprobe quota_v2 /etc/init.d/quota start

Then add these to the /etc/modules file:

quota_v1 quota_v2

All the credit goes to andreychek. I’m just putting this here to round out the discussion.

9

Heres still this problem in 16.04 Ubuntu
https://www.virtualmin.com/node/44795