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

9.3 Monitoring the Free Area

If file system resources become insufficient, new files cannot be created and existing files cannot be extended. For GFS Local File System, it is recommended to monitor whether there is sufficiently much free space in the following areas:

• i-node area
• file data area
• V-data area
• Extent management information area

Information on the i-node area, data, V-data, and extent management information areas can be displayed with the corresponding df_sfxfs(1M) option.

Even if the available free data area becomes insufficient, GFS Local File System can extend the corresponding file system by unmounting it first and adding a new, free partition to it. For details, see Appendix B.2.1, "sfxadd(1M)."

If the free space in i-node, V-data, or extent management information area become insufficient, back up the corresponding file system temporarily, create a new file system area by changing the sfxnewfs(1M) options or preparing a larger partition, then restore the file system from the backup tape.

The management area for V-data and extent management information areas may increase because of area fragmentation. In this case, the shortage can be resolved by simply backing up the corresponding file system, re-creating the file system area, and restoring the file system.