mmdefquotaon command

Activates default quota limit usage.

Synopsis

mmdefquotaon [-u] [-g] [-j] [-v] [-d] {Device [Device... ] | -a}

or

mmdefquotaon [-u] [-g] [-v] [-d] {Device:Fileset ... | -a}

Availability

Available on all IBM Spectrum Scale™ editions.

Description

The mmdefquotaon command activates default quota limits for file systems and filesets. If default quota limits are not applied, new users, groups, or filesets will have a quota limit of 0, indicating no limit.

To use default quotas, the -Q yes option must be in effect for the file system. To use default quotas at the fileset level, the --perfileset-quota option must also be in effect. The -Q yes and --perfileset-quota options are specified when creating a file system with the mmcrfs command or changing file system attributes with the mmchfs command. Use the mmlsfs command to display the current settings of these quota options.

If none of the following options are specified, the mmdefquotaon command activates all default quota limits:
  • -u
  • -j
  • -g

If the -a option is not used, Device must be the last parameter specified.

Default quotas are established for new users, groups of users or filesets by issuing the mmdefedquota command. Under the -d option, all users without an explicitly set quota limit will have a default quota limit assigned.

Parameters

Device
The device name of the file system to have default quota values activated.

If more than one file system is listed, the names must be delimited by a space. File system names need not be fully-qualified. fs0 is just as acceptable as /dev/fs0.

Fileset
The name of a fileset in the file system to have default quota values activated.

Options

-a
Activates default quotas for all GPFS™ file systems in the cluster. When used in combination with the -g option, only group quotas are activated. When used in combination with the -u or -j options, only user or fileset quotas, respectively, are activated.
-d
Assigns default quota limits to existing users, groups, or filesets when the mmdefedquota command is issued.

When --perfileset-quota is not in effect for the file system, this option will only affect existing users, groups, or filesets with no established quota limits.

When --perfileset-quota is in effect for the file system, this option will affect existing users, groups, or filesets with no established quota limits, and it will also change existing users or groups that refer to default quotas at the file system level into users or groups that refer to fileset-level default quota. For more information about default quota priorities, see Default quotas.

If this option is not chosen, existing quota entries remain in effect and are not governed by the default quota rules.

-g
Specifies that default quotas for groups are to be activated.
-j
Specifies that default quotas for filesets are to be activated.
-u
Specifies that default quotas for users are to be activated.
-v
Prints a message for each file system or fileset in which default quotas are activated.

Exit status

0
Successful completion.
nonzero
A failure has occurred.

Security

You must have root authority to run the mmdefquotaon command.

The node on which you enter the command must be able to execute remote shell commands on any other administration node in the cluster. It must be able to do so without the use of a password and without producing any extraneous messages. For more information, see Requirements for administering a GPFS file system.

GPFS must be running on the node from which the mmdefquotaon command is issued.

Examples

  1. To activate default user quotas on file system fs0, issue this command: 
    mmdefquotaon -u fs0
    To confirm the change, issue this command: 
    mmlsfs fs0 -Q
    The system displays information similar to: 
    flag value          description
---- -------------- ----------------------------------------
 -Q  user           Quotas enforced
     user           Default quotas enabled
  2. To activate default group quotas on all file systems in the cluster, issue this command: 
    mmdefquotaon -g -a
    To confirm the change, individually for each file system, issue this command: 
    mmlsfs fs1 -Q
    The system displays information similar to: 
    flag value          description

---- -------------- -----------------------------
 -Q  group          Quotas enforced
     group          Default quotas enabled
  3. To activate user, group, and fileset default quotas on file system fs2, issue this command: 
    mmdefquotaon fs2
    To confirm the change, issue this command: 
    mmlsfs fs2 -Q
    The system displays information similar to: 
    flag value                description
---- --------------       --------------------------
 -Q  user;group;fileset   Quotas enforced
     user;group;fileset   Default quotas enabled
  4. To activate user default quota for fileset fset1 on file system gpfs1, issue this command: 
    mmdefquotaon -d -u gpfs1:fset1
    To confirm the change, issue this command: 
    mmlsquota -d gpfs1:fset1
    The system displays information similar to: 
                Default Block Limits(KB)   | Default File Limits
Filesystem Fileset type quota    limit | quota limit entryType
gpfs1      fset1   USR      0 31457280 |     0     0 default on
gpfs1      fset1   GRP      0        0 |     0     0 default off
    In this example, notice the entryType for user quota displays default on. To also activate group default quota for fset1 on file system gpfs1, issue this command: 
    mmdefquotaon -d -g gpfs1:fset1
    To confirm the change, issue this command: 
    mmlsquota -d gpfs1:fset1
    The system displays information similar to :
             Default Block Limits(KB)      | Default File Limits
Filesystem Fileset type quota    limit | quota limit entryType
gpfs1      fset1   USR      0 31457280 |     0     0 default on
gpfs1      fset1   GRP      0        0 |     0     0 default on
    In this example, notice that the entryType for group quota also displays default on now.

See also

Location

/usr/lpp/mmfs/bin
Parent topic: Command reference