Using samgrowfs to Expand SAN-QFS File Systems

You can use the samgrowfs command to increase the size of a SAN-QFS file system. To perform this task, follow the procedures described in Adding Disk Cache to a File System.

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Caution - When using this procedure, be aware that the line-by-line device order in the mcf file must match the order of the devices listed in the file system's superblock.

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When the samgrowfs command is issued, the devices that were already in the mcf file keep their positions in the superblock. New devices are written to subsequent entries in the order in which the are encountered.

If this new order does not match the order in the superblock, the SAN-QFS file system cannot be fused.