User's Manual

96 Managing media
The following table depicts the reorganization steps, a description of their tasks, the volume status
indicators that are set, and the corresponding FSE jobs.
Note that if migrations to a particular FSE medium volume occur after the volume has been scanned but
before the copying step has been triggered, the “scanned” status indicator of this volume is removed. The
copying step of the reorganization cannot be started for this volume until the volume is scanned again.
You can limit the number of tape drives used during the reorganization of a specified FSE partition
(MaxNumDrivesRecall variable in the FSE partition configuration file) or system-wide
(SystemMaxNumDrivesMaint variable in the FSE system configuration file). The priority of the FSE
reorganization jobs is defined by the MaintPriority variable in the FSE partition configuration file.
The progress of the media reorganization process is logged to the FSE event log, while potential errors that
are encountered during the process are logged to the FSE error log. If any of the reorganization jobs is
interrupted, you must re-run it from the beginning. In some cases, the FSE disk buffer files generated during
the process have to be manually deleted.
You can start each media reorganization step and view the scan results using the FSE command-line
interface. The fsepool, fsepartition and fsemedium commands provide special options for this
purpose.
Media reorganization parameters
When triggering the FSE reorganizational scan job, you can specify two parameters that define which
migrated file generations are treated as valid during scanning and thus preserved during copying. The
parameters are in the form of arguments to the fsepartition command, and are the following:
Reorganization
step
Step tasks Status of medium volumes Job type
Step 1: Scanning [open/full] FSE reorganizational
scan job
1. Change the status of the FSE
partition to in scan.
2. Scan medium volumes for
obsolete data.
3. Write the scan results to the
RMDB.
[open/full], scanned
4. Change the status of the
scanned FSE partition back to
[enabled/mounted].
Step 2: Copying [open/full], scanned, in reorg FSE reorganization job
1. Copy selected data from the
medium volumes being
reorganized to open or empty
medium volumes.
2. Recycle the reorganized
medium volumes.
[open/full], scanned, in reorg,
recycled
3. Reinitialize the recycled
medium volumes.
empty
Reorganization parameter Argument to fsepartition
boundary migration date and time (mandatory) "YYYY/MM/DD HH:mm:ss"
number of latest generations (optional) NumberOfGenerations