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 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 announces to the system that the specified filesystems should
have any disk quotas turned off.
- -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.
- -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)