PRIMECLUSTER Global File Services Configuration and Administration Guide 4.2 (Solaris(TM) Operating Environment)

24.2 Backing Up and Restoring using sfcdump(1M) and sfcrestore(1M)

The sfcdump(1M) and sfcrestore(1M) commands are backup and restoration tools for GFS Shared File Systems. The commands have the same functions as the ufsdump(1M) and ufsrestore(1M) commands in UFS. The following are the main features of the sfcdump(1M) and sfcrestore(1M) commands:

• Multiple backups and restorations
  The entire file system can be backed up. Incremental backups or backup as individual files can also be created. The file system can be restored from these backups.
• Multiple tape support
  A file system can be backed up onto multiple tapes. Therefore, if the contents of a file system or file to be backed up cannot be stored on one tape, the contents can be backed up onto multiple tapes.
• Command line interface compatibility with ufsdump(1M) and ufsrestore(1M)
  GFS Shared File Systems can be backed up and restored using the same command line interface as that of the ufsdump(1M) and ufsrestore(1M) commands in UFS.

Note the following about compatibility between the ufsdump(1M)/ufsrestore(1M) and sfcdump(1M)/sfcrestore(1M) commands:

• Backup data created by the ufsdump(1M) command is not compatible with the data created by the sfcdump(1M) command. The sfcrestore(1M) command cannot restore the data backed up by the ufsdump(1M) command. In the same way, the ufsrestore(1M) command cannot restore the data backed up by the sfcdump(1M) command.
• The sfcdump(1M) command can backup GFS Shared File Systems. In addition, the ufsdump(1M) command cannot backup GFS Shared File Systems.

Backup by using sfcdump(1M) can only be performed from nodes defined as shared nodes of the GFS Shared File System.

This section explains how to execute the sfcdump(1M) and sfcrestore(1M) command to backup and restore GFS Shared File Systems.

For details on sfcdump(1M), see Appendix F.2.5, "sfcdump(1M)." For details on sfcrestore(1M), see Appendix F.2.25, "sfcrestore(1M)."

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24.2.1 Backing up using the sfcdump(1M)

24.2.2 Restoration using sfcrestore(1M)

24.2.3 Notes on using differential backup