ACCT_AUTO_CLOSE(9) Accounting Framework ACCT_AUTO_CLOSE(9)NAME
acct_auto_close - turn off a filesystem's accounting if it is on
SYNOPSIS
void acct_auto_close(struct super_block * sb);
ARGUMENTS
sb
super block for the filesystem
DESCRIPTION
If the accounting is turned on for a file in the filesystem pointed to by sb, turn accounting off.
COPYRIGHT Kernel Hackers Manual 2.6. July 2010 ACCT_AUTO_CLOSE(9)
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QUOTAON(8) System Manager's Manual QUOTAON(8)NAME
quotaon, quotaoff - turn filesystem quotas on and off
SYNOPSIS
/sbin/quotaon [ -vugfp ] [ -F format-name ] filesystem...
/sbin/quotaon [ -avugfp ] [ -F format-name ]
/sbin/quotaoff [ -vugp ] [ -x state ] filesystem...
/sbin/quotaoff [ -avugp ]
DESCRIPTION
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.
OPTIONS
quotaon
-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
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)
-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, --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 on/off limit enforcement for XFS filesystems (perform quota accounting only). This option is only applicable to XFS, 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 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 ALSO quotactl(2), fstab(5), quota_nld(8), repquota(8), warnquota(8)4th Berkeley DistributionQUOTAON(8)