IBM OS/390 User Manual

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Reblock or change the logical record length of a data set.
Copy user labels on sequential output data sets.
Supply editing facilities and exits for your routines that process labels,
manipulate input data, create keys, and handle permanent input/output
errors.
Information on IEBGENER is provided in 
DFSMS/MVS Utilities, SC26-4926.
29.5 DFSMSdss
DFSMSdss is a direct access storage device (DASD) data and space
management tool. DFSMSdss works on DASD volumes only in the MVS
environment. You can use DFSMSdss to:
Copy and move data sets between volumes of like and unlike device types
Dump and restore data sets, entire volumes, or specific tracks
Convert data sets and volumes to and from SMS management
Compress partitioned data sets
Release unused space in data sets
Reduce or eliminate DASD free-space fragmentation by consolidating free
space on a volume
Information on DFSMSdss is provided in the following publications:
DFSMS/MVS DFSMSdss Storage Administration Guide, SC26-4930.
Describes DFSMSdss tasks for copying, dumping, and restoring data sets
and DASD volumes.
DFSMSdss Storage Administration Reference, SC26-4929.
Describes DFSMSdss commands, including syntax and coding examples.
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