Command reference
A list of all the GPFS™ commands and a short description of each is presented in this topic.
The
following commands are specific to IBM Spectrum Scale™
RAID:
- mmaddcomp
- mmaddcompspec
- mmaddpdisk
- mmchcarrier
- mmchcomp
- mmchcomploc
- mmchenclosure
- mmchfirmware
- mmchpdisk
- mmchrecoverygroup
- mmcrrecoverygroup
- mmcrvdisk
- mmdelcomp
- mmdelcomploc
- mmdelcompspec
- mmdelpdisk
- mmdelrecoverygroup
- mmdelvdisk
- mmdiscovercomp
- mmgetdisktopology
- mmlscomp
- mmlscomploc
- mmlscompspec
- mmlsenclosure
- mmlsfirmware
- mmlspdisk
- mmlsrecoverygroup
- mmlsrecoverygroupevents
- mmlsvdisk
- mmsyncdisplayid
- gpfs.snap command
Creates an informational system snapshot at a single point in time. This system snapshot consists of information such as cluster configuration, disk configuration, network configuration, network status, GPFS logs, dumps, and traces. - mmaddcallback command
Registers a user-defined command that GPFS will execute when certain events occur. - mmadddisk command
Adds disks to a GPFS file system. - mmaddnode command
Adds nodes to a GPFS cluster. - mmadquery command
Queries and validates Active Directory (AD) server settings. - mmafmconfig command
Can be used to manage home caching behavior and mapping of gateways and home NFS exported servers. - mmafmctl command
This command is for various operations and reporting information on all filesets. It is recommended to read the IBM Spectrum Scale: Administration Guide AFM and AFM Disaster Recovery chapters in conjunction with this manual for detailed description of the functions. - mmafmlocal command
Provides a list of cached files and file statistics such as inode number, allocated blocks, and so on. - mmapplypolicy command
Deletes files, migrates files between storage pools, or does file compression or decompression in a file system as directed by policy rules. - mmauth command
Manages secure access to GPFS file systems. - mmbackup command
Performs a backup of a GPFS file system or independent fileset to an IBM Spectrum Protect™ server. - mmbackupconfig command
Collects GPFS file system configuration information. - mmblock command
Manages the iSCSI block service. - mmbuildgpl command
Manages prerequisite packages for Linux and builds the GPFS portability layer. - mmcallhome command
Manages the call home operations. - mmces command
Manage CES (Cluster Export Services) configuration. - mmcesdr command
Manages protocol cluster disaster recovery. - mmchattr command
Changes attributes of one or more GPFS files. - mmchcluster command
Changes GPFS cluster configuration data. - mmchconfig command
Changes GPFS configuration parameters. - mmchdisk command
Changes state or parameters of one or more disks in a GPFS file system. - mmcheckquota command
Checks file system user, group and fileset quotas. - mmchfileset command
Changes the attributes of a GPFS fileset. - mmchfs command
Changes the attributes of a GPFS file system. - mmchlicense command
Controls the type of GPFS license associated with the nodes in the cluster. - mmchmgr command
Assigns a new file system manager node or cluster manager node. - mmchnode command
Changes node attributes. - mmchnodeclass command
Changes user-defined node classes. - mmchnsd command
Changes Network Shared Disk (NSD) configuration attributes. - mmchpolicy command
Establishes policy rules for a GPFS file system. - mmchpool command
Modifies storage pool properties. - mmchqos command
Changes the Quality of Service for I/O operations (QoS) settings for a file system. 
mmclidecode command
Decodes the parseable command output field.- mmclone command
Creates and manages file clones. - mmcloudgateway command
Creates and manages the cloud storage tier. - mmcrcluster command
Creates a GPFS cluster from a set of nodes. - mmcrfileset command
Creates a GPFS fileset. - mmcrfs command
Creates a GPFS file system. - mmcrnodeclass command
Creates user-defined node classes. - mmcrnsd command
Creates Network Shared Disks (NSDs) used by GPFS. - mmcrsnapshot command
Creates a snapshot of a file system or fileset at a single point in time. - mmdefedquota command
Sets default quota limits. - mmdefquotaoff command
Deactivates default quota limit usage. - mmdefquotaon command
Activates default quota limit usage. - mmdefragfs command
Reduces disk fragmentation by increasing the number of full free blocks available to the file system. - mmdelacl command
Deletes a GPFS access control list. - mmdelcallback command
Deletes one or more user-defined callbacks from the GPFS system. - mmdeldisk command
Deletes disks from a GPFS file system. - mmdelfileset command
Deletes a GPFS fileset. - mmdelfs command
Removes a GPFS file system. - mmdelnode command
Removes one or more nodes from a GPFS cluster. - mmdelnodeclass command
Deletes user-defined node classes. - mmdelnsd command
Deletes Network Shared Disks (NSDs) from the GPFS cluster. - mmdelsnapshot command
Deletes a GPFS snapshot. - mmdf command
Queries available file space on a GPFS file system. - mmdiag command
Displays diagnostic information about the internal GPFS state on the current node. - mmdsh command
Runs commands on multiple nodes or network connected hosts at the same time. - mmeditacl command
Creates or changes a GPFS access control list. - mmedquota command
Sets quota limits. - mmexportfs command
Retrieves the information needed to move a file system to a different cluster. - mmfsck command
Checks and repairs a GPFS file system. - mmfsctl command
Issues a file system control request. - mmgetacl command
Displays the GPFS access control list of a file or directory. - mmgetstate command
Displays the state of the GPFS daemon on one or more nodes. - mmhadoopctl command
Installs and sets up the GPFS connector for a Hadoop distribution; starts or stops the GPFS connector daemon on a node. - mmhealth command
Monitors health status of nodes. - mmimgbackup command
Performs a backup of a single GPFS file system metadata image. - mmimgrestore command
Restores a single GPFS file system from a metadata image. - mmimportfs command
Imports into the cluster one or more file systems that were created in another GPFS cluster. - mmkeyserv command
Manages encryption key servers and clients. - mmlinkfileset command
Creates a junction that references the root directory of a GPFS fileset. - mmlsattr command
Queries file attributes. - mmlscallback command
Lists callbacks that are currently registered in the GPFS system. - mmlscluster command
Displays the current configuration information for a GPFS cluster. - mmlsconfig command
Displays the current configuration data for a GPFS cluster. - mmlsdisk command
Displays the current configuration and state of the disks in a file system. - mmlsfileset command
Displays attributes and status for GPFS filesets. - mmlsfs command
Displays file system attributes. - mmlslicense command
Displays information about the GPFS node licensing designation or about disk and cluster capacity. - mmlsmgr command
Displays which node is the file system manager for the specified file systems or which node is the cluster manager. - mmlsmount command
Lists the nodes that have a given GPFS file system mounted. - mmlsnodeclass command
Displays node classes defined in the system. - mmlsnsd command
Displays Network Shared Disk (NSD) information for the GPFS cluster. - mmlspolicy command
Displays policy information. - mmlspool command
Displays information about the known storage pools. - mmlsqos command
Displays the I/O performance values of a file system, when you enable Quality of Service for I/O operations (QoS) with the mmchqos command. - mmlsquota command
Displays quota information for a user, group, or fileset. - mmlssnapshot command
Displays GPFS snapshot information. - mmmigratefs command
Performs needed conversions to support new file system features. - mmmount command
Mounts GPFS file systems on one or more nodes in the cluster. - mmnetverify command
Verifies network configuration and operation in a cluster. - mmnfs command
Manages NFS exports and configuration. - mmnsddiscover command
Rediscovers paths to the specified network shared disks. - mmobj command
Manages configuration of Object protocol service, and administers storage policies for object storage, unified file and object access, and multi-region object deployment. - mmperfmon command
Configures the Performance Monitoring tool and lists the performance metrics. - mmpmon command
Manages performance monitoring and displays performance information. - mmprotocoltrace command
Starts, stops, and monitors tracing for the CES protocols. - mmpsnap command
Creates or deletes identical snapshots on the cache and home clusters, or shows the status of snapshots that have been queued up on the gateway nodes. - mmputacl command
Sets the GPFS access control list for the specified file or directory. - mmquotaoff command
Deactivates quota limit checking. - mmquotaon command
Activates quota limit checking. - mmremotecluster command
Manages information about remote GPFS clusters. - mmremotefs command
Manages information needed for mounting remote GPFS file systems. - mmrepquota command
Displays file system user, group, and fileset quotas. - mmrestoreconfig command
Restores file system configuration information. - mmrestorefs command
Restores a file system or an independent fileset from a snapshot. - mmrestripefile command
Rebalances or restores the replication factor of the specified files, or performs any incomplete or deferred file compression or decompression. - mmrestripefs command
Rebalances or restores the replication factor of all the files in a file system. Alternatively, this command performs any incomplete or deferred file compression or decompression of all the files in a file system. - mmrpldisk command
Replaces the specified disk. - mmsdrrestore command
Restores the latest GPFS system files on the specified nodes. - mmsetquota command
Sets quota limits. - mmshutdown command
Unmounts all GPFS file systems and stops GPFS on one or more nodes. - mmsmb command
Administers SMB shares, export ACLs, and global configuration. - mmsnapdir command
Controls how the special directories that connect to snapshots appear. - mmstartup command
Starts the GPFS subsystem on one or more nodes. - mmtracectl command
Sets up and enables GPFS tracing. - mmumount command
Unmounts GPFS file systems on one or more nodes in the cluster. - mmunlinkfileset command
Removes the junction to a GPFS fileset. - mmuserauth command
Manages the authentication configuration of file and object access protocols. The configuration allows protocol access methods to authenticate users who need to access data that is stored on the system over these protocols. - mmwinservctl command
Manages the mmwinserv Windows service. - spectrumscale command
Installs and configures GPFS; adds nodes to a cluster; deploys and configures protocols, performance monitoring tools, and authentication services; and upgrades GPFS and protocols.