I'm trying to configure quota for my / mount on Ubuntu 11.10. I have added ,usrjquota=quota.user,grpjquota=quota.group,jqfmt=vfsv0 to it in fstab. Made mount -o remount / and quotacheck -avugm. But when I try to turn quota on quotaon -avug i get this messages:
quotaon: using //quota.group on /dev/xvda1 [/]: No such process
quotaon: Quota format not supported in kernel.
quotaon: using //quota.user on /dev/xvda1 [/]: No such process
quotaon: Quota format not supported in kernel.

As I understood googling, that Ubuntu kernel could be compiled without quota support.

Any ideas?


  • Did you build the quota files with quotacheck?
    – psusi
    Mar 3, 2012 at 4:29
  • If you mean this quotacheck -avugm, then yes, I did.
    – Chuguniy
    Mar 3, 2012 at 5:43
  • The default format may be vfsv1. Try either omitting the jqfmt option or specifying the format to quotacheck.
    – psusi
    Mar 3, 2012 at 7:32
  • How do I do that? I'm a beginner to whole UNIX/Linux thing, could you please explain or give some link on how to do it? Thanks! P.S. I have also tried to delete the defaults parameter from the / mount, no luck.
    – Chuguniy
    Mar 3, 2012 at 16:58
  • How to do what? NOT use the jgfmt option in fstab?
    – psusi
    Mar 3, 2012 at 18:24

1 Answer 1


There's a bug filled into launchpad which describes and solves this problem.

In summary, the quota module (and others) was removed from the virtual kernel. If you are in a Virtual Machine or aws-EC2 this should be your problem.

The solution

On Oneiric and Precise install linux-image-extra-virtual package. On old versions the modules should be already patched into kernel (just update your system).

After that run modprobe quota_v2 and modprobe quota_v1 in order to get ready to run quotas. Also remember to put the modules on /etc/modules.

Run your quotaon command as usual.

  • Can you please elabrate more on how to put the modules on /etc/modules?
    – Jeff Tian
    Oct 13, 2016 at 9:52

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.