IBM General Parallel File System for AIX: Administration and Programming Reference

mmcheckquota Command

Name

mmcheckquota - Checks file system user and group quotas.

Synopsis

mmcheckquota [-v ] { Device [Device ...] | -a | }

Or,

mmcheckquota {[-u UserQuotaFilename ] | [-g GroupQuotaFileName ]} Device

Description

The mmcheckquota command serves two different purposes:

1. Count inode and space usage in a file system by user and group, and write the collected data into quota files. This command need only be issued when quota information is lost due to node failure and users are denied disk space that their quotas should allow.
2. Replace either the user or group quota files, for the file system designated by Device, thereby restoring the quota files for the file system. These files must be contained in the root directory of Device.

mmcheckquota is an I/O-intensive command and should be run when the system load is light.

Parameters

-a

Checks all GPFS file systems in the nodeset from which the command is issued.

Device

The device name of the file system. File system names need not be fully qualified. fs0 is as acceptable as /dev/fs0.

-g UserQuotaFilename

Replace the current group quota file with the file indicated.

When replacing quota files with the -g option, the file system must be unmounted.

-u UserQuotaFilename

Replace the current user quota file with the file indicated.

When replacing quota files with the -u option, the file system must be unmounted.

Options

-v

Reports discrepancies between calculated and recorded disk quotas.

Exit status

0

Successful completion.

1

A failure has occurred.

Security

You must have root authority to run the mmcheckquota command.

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

In an SP environment, verify the authentication method set for SP security services:

1. If your authentication method is set to compatibility, Kerberos authentication is required. Issue the k4init command.
2. If your authentication method is set to DCE, dce_login authentication is required.
3. If your authentication method is set to NONE/std, there must be an entry in the /etc/sysctl.mmcmd.acl file on every node in the nodeset for the root user at every other node in the nodeset.

For further information, see the latest IBM Parallel System Support Programs for AIX: Administration Guide, IBM Parallel System Support Programs for AIX: Command and Technical Reference, and RS/6000: Planning Volume 2, Control Workstation and Software Environment manuals at www.rs6000.ibm.com/resource/aix_resource/sp_books/pssp. Search for information on sysctl.

Examples

1. To check quotas for file system fs0, enter:

   mmcheckquota fs0
   

   The system displays information only if a problem is found.
2. To check quotas for all file systems, enter:

   mmcheckquota -a
   

   The system displays information only if there is a problem found or if there are no quotas installed for a file system:

   fs2: no quota management installed
   fs3: no quota management installed
    
   

See also

mmedquota Command

mmfsck Command

mmlsquota Command

mmquotaon Command

mmquotaoff Command

mmrepquota Command

Location

/usr/lpp/mmfs/bin