convertquota(8) — Linux manual page


CONVERTQUOTA(8)            System Manager's Manual           CONVERTQUOTA(8)

NAME         top

       convertquota - convert quota from old file format to new one

SYNOPSIS         top

       convertquota [ -ug ] -e filesystem

       convertquota [ -ug ] -f oldformat,newformat filesystem

DESCRIPTION         top

       convertquota converts old quota files quota.user and to
       files aquota.user and in new format currently used by
       2.4.0-ac? and newer or by SuSE or Red Hat Linux 2.4 kernels on

       New file format allows using quotas for 32-bit uids / gids, setting
       quotas for root, accounting used space in bytes (and so allowing use
       of quotas in ReiserFS) and it is also architecture independent. This
       format introduces Radix Tree (a simple form of tree structure) to
       quota file.

OPTIONS         top

       -u, --user
              convert user quota file. This is the default.

       -g, --group
              convert group quota file.

       -f, --convert-format oldformat,newformat
              convert quota file from oldformat to newformat.

       -e, --convert-endian
              convert vfsv0 file format from big endian to little endian
              (old kernels had a bug and did not store quota files in little
              endian format).

       -V, --version
              print version information.

FILES         top

       aquota.user         new user quota file        new group quota file

SEE ALSO         top

       quota(1), setquota(8), edquota(8), quotacheck(8), quotaon(8),

AUTHOR         top

       Jan Kara <>

COLOPHON         top

       This page is part of the quota (Linux Diskquota Tools) project.
       Information about the project can be found at [unknown -- if you
       know, please contact] It is not known how to
       report bugs for this man page; if you know, please send a mail to  This page was obtained from the project's
       upstream Git repository
       ⟨git://⟩ on
       2020-08-13.  (At that time, the date of the most recent commit that
       was found in the repository was 2020-05-21.)  If you discover any
       rendering problems in this HTML version of the page, or you believe
       there is a better or more up-to-date source for the page, or you have
       corrections or improvements to the information in this COLOPHON
       (which is not part of the original manual page), send a mail to

4th Berkeley Distribution      Fri Aug 20 1999               CONVERTQUOTA(8)

Pages that refer to this page: quotacheck(8)