QUOTAON(8)QUOTAON(8)NAME
quotaon, quotaoff - turn filesystem quotas on and off
SYNOPSIS
/usr/sbin/quotaon [ -vugfp ] [ -F format-name ] filesystem...
/usr/sbin/quotaon [ -avugfp ] [ -F format-name ]
/usr/sbin/quotaoff [ -vugp ] [ -x state ] filesystem...
/usr/sbin/quotaoff [ -avugp ]
DESCRIPTIONquotaon
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 guar‐
antee 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 account‐
ing 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.
OPTIONSquotaon-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, --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 dis‐
abled.
-v, --verbose
Display a message for each filesystem affected.
-u, --user
Manipulate user quotas. This is the default.
-g, --group
Manipulate group 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.
NOTES ON XFS FILESYSTEMS
To enable quotas on an XFS filesystem, use mount(8) or /etc/fstab quota
option to enable both accounting and limit enforcement. quotaon util‐
ity 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 root‐
flags 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.
FILES
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
SEE ALSOquotactl(2), fstab(5), quota_nld(8), repquota(8), warnquota(8)4th Berkeley DistributionQUOTAON(8)
