Open Source Software

quotaon(8)



NAME

   quotaon, quotaoff - turn filesystem quotas on and off

SYNOPSIS

   quotaon [ -vugfp ] [ -F format-name ] filesystem...
   quotaon [ -avugfp ] [ -F format-name ]

   quotaoff [ -vugp ] [ -x state ] filesystem...
   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  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
          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 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
   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.

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)



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