User's Manual

182 Monitoring and maintaining FSE
Consistency check of FSC vs. FSE media
Consistency check of the File System Catalog against FSE media matches file information from the Data
Location Catalog and Name Space Catalog, which are parts of the File System Catalog, with Fast
Recovery Information (FRI) on the belonging FSE media. This process can be executed either for all FSE
media related to the specified FSE partition or to particular FSE media or FSE medium volumes.
TIP: Consistency check of a File System Catalog with all belonging FSE media might take considerable
time, especially on large FSE partitions with numerous FSE media. In such circumstances, you are advised
to schedule several checks with limited set of FSE media to run in periods when the FSE implementation is
not heavily loaded.
All mismatches found during the consistency check process are reported to the FSE check log on the FSE
server. Location of the log file depends on the platform.
Linux specific
The FSE check log file is named check_media_fsc_PartitionName.log and located in the
directory /var/opt/fse/log.
Windows specific
The FSE check log file is named check_media_fsc_PartitionName.log and located in the
directory %InstallPath%\var\log.
The value of %InstallPath% depends on the choice made in the FSE installation process. It defaults to
C:\Program Files\Hewlett-Packard\FSE.
For certain types of inconsistencies, you can enable automatic correction and update DLC and NSC with
missing information. This feature can be used to resolve situations when reference to a file on the FSE
medium is missing in the File System Catalog (missing in FSC) or when there are inconsistencies in the
Name Space Catalog (no NSC).
You can further specify that automatic correction process removes all entries in the File System Catalog that
have not been found in the belonging Fast Recovery Information blocks on FSE media. An entry in this
context means information about the location on the FSE media of any of the following: file generation, file
copy, file split.
If other types of inconsistencies are reported, you need to perform File System Catalog recovery. For
details, see ”File System Catalog recovery” on page 235.
IMPORTANT: When automatic correction and removal of missing entries from FSC are enabled, the
consistency check of File System Catalog against FSE media invalidates results of any prior
reorganizational scans that have been run on the FSE partition.
Starting the consistency check
When starting the consistency check using FSE command-line interface, you have two choices: you can
either compare a File System Catalog with all related FSE media, or you can specify the barcodes of FSE
media or the numbers of FSE medium volumes that you would like to include in the check:
• To start the consistency check of a FSC with all related FSE media, using FSE command-line interface,
run the following command:
The option --autocorrect enables automatic FSC correction and the option --match-media
enables removal of entries from FSC that have not been found in the FRI or on FSE media.
fsecheck --fsc-media PartitionName [--autocorrect[--match-media]]