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QUOTAON(8) System Manager's Manual 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 ]
DESCRIPTION
quotaon
quotaon announces to the system that disk quotas should be enabled on one or more filesys-
tems. 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 ver-
sion 1 group quota).
XFS filesystems are a special case - XFS considers quota information as filesystem meta-
data 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 quo-
tas turned off.
OPTIONS
quotaon
-F, --format=format-name
Report quota for specified format (ie. don't perform format autodetection). Possi-
ble 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). Possi-
ble 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, --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 appli-
cable 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 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 filesys-
tem 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 filesys-
tems)
quota.user or quota.group
quota file at the filesystem root (version 1 quota, non-XFS filesys-
tems)
/etc/fstab default filesystems
SEE ALSO
quotactl(2), fstab(5), quota_nld(8), repquota(8), warnquota(8)
4th Berkeley Distribution QUOTAON(8)
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