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FUP Commands
File Utility Program (FUP) Reference Manual—523323-014
2-24
CHECKSUM
CHECKSUM
Recomputes the checksum value for blocks of data in disk files. Use this command
when recovering from a software-detected checksum error.
fileset-list
is a list of files whose checksum values are to be recomputed.
fileset-list
can
include Enscribe files (structured or unstructured) and SQL files. You can specify
qualified-fileset
for
fileset-list
.
Any SQL views (protection or shorthand) in
fileset-list
are ignored, and a
warning is issued.
PARTONLY
specifies that FUP is to compute checksum values for all the primary and
secondary partitions encountered in
fileset-list
and for all nonpartitioned
files. If a primary partition name is referenced, the secondary partitions of the file
are not checksummed.
CHECKSUM Guidelines
Although CHECKSUM reads each block of data (from each file specified by
fileset-list
) and recomputes a checksum value for each one, it rewrites only
blocks whose checksum values are incorrect.
Checksum errors usually indicate a potential data integrity problem. CHECKSUM
recomputes the checksum value for blocks of data but does not fix any data that
might have changed.
If a Peripheral Utility Program (PUP) DOWN or STOPOPENS command was
executed for the volume named in
fileset-list
, CHECKSUM aborts.
If an open file or SQL view is encountered during processing, CHECKSUM skips it,
and a warning message appears.
If the
fileset-list
includes an asterisk (*) to specify all files in the file set, and
if the PARTONLY option has not been specified, CHECKSUM skips secondary
partitions of partitioned files (Enscribe and SQL).
CHECKSUM accepts SQL catalogs but not SQL views.
The maximum number of files in the
fileset-list
that can be checksummed at a time
is 2,147,483,647.
CHECKSUM fileset-list [ , PARTONLY ]