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PRIMECLUSTER Global File Services Configuration and Administration Guide 4.3

1.8.4 Notes on use of logical volumes of GDS

GDS is volume management software designed to improve the availability and operation manageability of information stored on disk units of the Storage Area Network (SAN). Various kinds of access controls can be performed on the logical volumes of GDS to protect data against damage due to unauthorized access.

To use a logical volume of GDS in the GFS Shared File System, make the following settings:

To use the GFS Shared File Systems, logical volumes of GDS must be ACTIVE. If they are STOP, all accesses to the shared file systems will be prohibited.

Note

If you create the GFS Shared File System on GDS-striped logical volumes, set the width of the stripe group to 256 blocks or more.

Note

Don't use online volume expansion for the logical volume of GDS that is including GFS Shared File System. Because the copy of the super block and of the partition configuration information of the GFS Shared File System cannot be read when the size of the logical volumes of GDS is changed by the online volume expansion, the GFS Shared File System cannot be used.
If you want to expand the GFS Shared File System, add an unoccupied logical volume partition, or create a new logical volume and add it.

See

For the operations of disk classes to which logical volumes of GDS belong, refer to the description of class operations under "Operation using Global Disk Services Management View" in the "PRIMECLUSTER Global Disk Services Configuration and Administration Guide (Linux)".
For the operations of logical volumes of GDS, refer to the description of volume operations under "Operation using Global Disk Services Management View" in the "PRIMECLUSTER Global Disk Services Configuration and Administration Guide (Linux)".