Snapshot usage errors

Certain error in the GPFS error messages are related to the snapshot usage restrictions or incorrect snapshot names .

Many errors returned from the snapshot commands are related to usage restrictions or incorrect snapshot names.

An example of a snapshot restriction error is exceeding the maximum number of snapshots allowed at one time. For simple errors of these types, you can determine the source of the error by reading the error message or by reading the description of the command. You can also run the mmlssnapshot command to see the complete list of existing snapshots.

Examples of incorrect snapshot name errors are trying to delete a snapshot that does not exist or trying to create a snapshot using the same name as an existing snapshot. The rules for naming global and fileset snapshots are designed to minimize conflicts between the file system administrator and the fileset owners. These rules can result in errors when fileset snapshot names are duplicated across different filesets or when the snapshot command -j option (specifying a qualifying fileset name) is provided or omitted incorrectly. To resolve name problems, review the mmlssnapshot output with careful attention to the Fileset column. You can also specify the -s or -j options of the mmlssnapshot command to limit the output. For snapshot deletion, the -j option must exactly match the Fileset column.

For more information about snapshot naming conventions, see mmcrsnapshot command.