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NAME | SYNOPSIS | DESCRIPTION | OPTIONS | NOTES ON XFS FILESYSTEMS | FILES | SEE ALSO | COLOPHON |
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QUOTAON(8) System Manager's Manual QUOTAON(8)
quotaon, quotaoff - turn filesystem quotas on and off
quotaon [ -vugfp ] [ -F format-name ] filesystem...
quotaon [ -avugPfp ] [ -F format-name ]
quotaoff [ -vugPp ] [ -x state ] filesystem...
quotaoff [ -avugp ]
quotaon
quotaon announces to the system that disk quotas should be enabled
on one or more filesystems. The filesystem quota files must be
present in the root directory of the specified filesystem and be
named either aquota.user (for version 2 user quota), quota.user
(for version 1 user quota), aquota.group (for version 2 group
quota), or quota.group (for version 1 group quota).
XFS filesystems are a special case - XFS considers quota
information as filesystem metadata and uses journaling to provide
a higher level guarantee of consistency. There are two components
to the XFS disk quota system: accounting and limit enforcement.
XFS filesystems require that quota accounting be turned on at
mount time. It is possible to enable and disable limit
enforcement on an XFS filesystem after quota accounting is already
turned on. The default is to turn on both accounting and
enforcement.
The XFS quota implementation does not maintain quota information
in user-visible files, but rather stores this information
internally.
quotaoff
quotaoff announces to the system that the specified filesystems
should have any disk quotas turned off.
quotaon
-F, --format=format-name
Report quota for specified format (ie. don't perform format
autodetection). Possible format names are: vfsold Original
quota format with 16-bit UIDs / GIDs, vfsv0 Quota format
with 32-bit UIDs / GIDs, 64-bit space usage, 32-bit inode
usage and limits, vfsv1 Quota format with 64-bit quota
limits and usage, xfs (quota on XFS filesystem)
-a, --all
All automatically mounted (no noauto option) non-NFS
filesystems in /etc/fstab with quotas will have their
quotas turned on. This is normally used at boot time to
enable quotas.
-v, --verbose
Display a message for each filesystem where quotas are
turned on.
-u, --user
Manipulate user quotas. This is the default.
-g, --group
Manipulate group quotas.
-P, --project
Manipulate project quotas.
-p, --print-state
Instead of turning quotas on just print state of quotas
(ie. whether. quota is on or off)
-x, --xfs-command enforce
Switch on limit enforcement for XFS filesystems. This is
the default action for any XFS filesystem. This option is
only applicable to XFS, and is silently ignored for other
filesystem types.
-f, --off
Make quotaon behave like being called as quotaoff.
quotaoff
-F, --format=format-name
Report quota for specified format (ie. don't perform format
autodetection). Possible format names are: vfsold (version
1 quota), vfsv0 (version 2 quota), xfs (quota on XFS
filesystem)
-a, --all
Force all filesystems in /etc/fstab to have their quotas
disabled.
-v, --verbose
Display a message for each filesystem affected.
-u, --user
Manipulate user quotas. This is the default.
-g, --group
Manipulate group quotas.
-P, --project
Manipulate project quotas.
-p, --print-state
Instead of turning quotas off just print state of quotas
(ie. whether. quota is on or off)
-x, --xfs-command delete
Free up the space used to hold quota information
(maintained internally) within XFS. This option is only
applicable to XFS, and is silently ignored for other
filesystem types. It can only be used on a filesystem with
quota previously turned off.
-x, --xfs-command enforce
Switch off limit enforcement for XFS filesystems (perform
quota accounting only). This is the default action for any
XFS filesystem. This option is only applicable to XFS, and
is silently ignored for other filesystem types.
-x, --xfs-command account
This option can be used to disable quota accounting. It is
not possible to enable quota accounting by quota tools. Use
mount(8) for that. This option is only applicable to XFS
filesystems, and is silently ignored for other filesystem
types.
To enable quotas on an XFS filesystem, use mount(8) or /etc/fstab
quota option to enable both accounting and limit enforcement.
quotaon utility cannot be used for this purpose.
Turning on quotas on an XFS root filesystem requires the quota
mount options be passed into the kernel at boot time through the
Linux rootflags boot option.
To turn off quota limit enforcement on any XFS filesystem, first
make sure that quota accounting and enforcement are both turned on
using repquota -v filesystem. Then, use quotaoff -v filesystem to
disable limit enforcement. This may be done while the filesystem
is mounted.
Turning on quota limit enforcement on an XFS filesystem is
achieved using quotaon -v filesystem. This may be done while the
filesystem is mounted.
aquota.user or aquota.group
quota file at the filesystem root (version 2 quota, non-XFS
filesystems)
quota.user or quota.group
quota file at the filesystem root (version 1 quota, non-XFS
filesystems)
/etc/fstab
default filesystems
quotactl(2), fstab(5), quota_nld(8), repquota(8), warnquota(8)
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 [email protected]] It is not known how to
report bugs for this man page; if you know, please send a mail to
[email protected]. This page was obtained from the project's
upstream Git repository
⟨git://git.kernel.org/pub/scm/utils/quota/quota-tools.git⟩ on
2025-08-11. (At that time, the date of the most recent commit
that was found in the repository was 2025-07-02.) 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 [email protected]
4th Berkeley Distribution QUOTAON(8)
Pages that refer to this page: quota(1), quotasync(1), quotactl(2), convertquota(8), edquota(8), quotacheck(8), repquota(8), setquota(8)
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HTML rendering created 2025-09-06 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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