Commands for data protection and recovery in IBM Storage Scale
The following section lists the commands used for data protection and recovery in IBM Storage Scale.
- mmbackup
- Used to back up the user data from a GPFS file system or independent fileset to an IBM Storage Protect server or servers. For more information on mmbackup, see mmbackup command.
- mmbackupconfig
- Used to collect basic file system configuration information. The configuration information backed up by this command includes block size, replication factors, storage pool layout, filesets and junction points, quota information, and a number of other file system attributes. This command forms a part of the SOBAR utilities along with the mmrestoreconfig, mmimgbackup and mmimgrestore commands. For more information on mmbackupconfig, see mmbackupconfig command.
- mmfsck
- Used to detect and repair conditions that can cause problems in a file system. The mmfsck command operates in two modes: online or offline. The online mode can run while the file system is mounted. It detects and repairs lost blocks (blocks that are allocated but do not belong to any file) and corruptions in the block allocation map. The offline mode can run only when the file system is unmounted, but it can detect and fix problems that the online mode cannot. In general, you do not need to run the command in offline mode unless you are directed to by the IBM® Support Center. For more information see mmfsck command.
- mmimgbackup
- Used to perform a backup of a single GPFS file system metadata image. This command forms a part of the SOBAR utilities along with the mmbackupconfig, mmrestoreconfig and mmimgrestore commands. Make sure that you run the mmbackupconfig command before you run the mmimgbackup command. For more information on mmimgbackup, see mmimgbackup command.
- mmimgrestore
- Used to restore a single GPFS file system metadata image. This command forms a part of the SOBAR utilities along with the mmbackupconfig, mmrestoreconfig and mmimgbackup commands. The mmrestoreconfig command must be run before running the mmimgrestore command. For more information on mmimgrestore, see mmimgrestore command.
- mmrestoreconfig
- Used to restore file system configuration information. The mmrestoreconfig command allows you to either query or restore, or both query and restore the output file generated by the mmbackupconfig command. This command forms a part of the SOBAR utilities along with the mmbackupconfig, mmimgbackup and mmimgrestore commands. For more information on mmrestoreconfig, see mmrestoreconfig command.
- mmrestorefs
- Used to restore user data and attribute files to a file system or an independent fileset by using those of the specified snapshot. For more information on mmrestorefs command, see mmrestorefs command.
- mmsdrrestore
- Restores the latest GPFS system files on the specified nodes. When the CCR committed directories of all the quorum nodes have corrupted or missing files, the --ccr-repair parameter repairs the CCR committed directories of all the quorum nodes. For more information see mmsdrrestore command.