CPYOL ALL BUCLEUS cylinders specified on the output device, an error aessage
results.
Caution: The REORDER operand is intended to be used to move iIiIdisks to new locations; it is not intended forre-locating
non-ainidisk cylinders. To understand the difference,
consider a 10 cylinder minidisk. Its cylinders are numbered 0-9 and the count fields of its records refer to cylinders 0-9. Furthermore, if the minidisk contains location-dependent
data, then references to cylinders 0-9 will be hidden within
that data. When REORDER is used to move the minidisk to a new
real location, the minidisk cylinders are nevertheless still
regarded as being cylinders 0-9 and there is no need to change
the cylinder numbers in the .count field of the records. On the other hand, when moving non-minidisk cylinders, one would
generally want the count fields of the moved records to
reflect the new cylinder addresses; but REORDER keeps the
original cylinder numbers in the count fields.
specifies that cylinder 0 and all active directory and
permanent disk space are to be copied, dumped, or restored.
This indicates that both source and target disk must be in CP foraat, that is, the CP Format/Allocate program must have formatted them.
specifies that the operation is to be performed on all
cylinders, except alternate track cylinders on some devices. (See "Restrictions" below.)
Note: The occurrence of aessage DBKDDR705E (issued upon comFletion of the copy restore or duap operation) indicates
that an attempt vas made to copy restore or dump the contents
of.cylinders beyond the extents of the designated minidisk.
specifies that record 2 on cylinder 0, track 0 and the nucleus
cylinders are dumped, copied, or restored. Each track processed by this utility aust have a valid home address
on it containing the real cylinder and track location. Even when
restoring and copying data to a track it must have a pre-existing
home address on it. Each track on an input DASD device must have a valid record zero on
it, with no more than eight bytes in the key and data fields of the
record. Each track on an output DisD device must also have a valid
record zero on it unless that device is 2314, 2319, 2305-1, or 2305-2. Flagged tracks are treated just as any other track for all 2314,
2319, and 2305 devices. That is, no attempt is made to substitute
the alternate track data when a defective primary track is read. In
addition, tracks are not inspected to determine whether they were
previously flagged when written. Therefore, volumes containing
flagged tracks should be restored to the same cylinders of the voluae from which they were dumped. The message occurs each time a defective track is dumped, copied or restored, and the operation
continues. When ALL is specified for these device types, both the primary cylinders and the high-order cylinders normally reserved for
alternate tracks are copied, or restored. Section 4. V8/310 Service Prograas 163
Flagged tracks on 3330, 3340, and 3350 devices are handled so that
data is transferred to or from the assigned alternate track in place
of the defective track. (For 3330 and 3350 this is accomplished automatically by the hardware of the control unit while for the 3340 and 3344 it is accomplished through software.) The tape created by dumping one of these types of D1SD devices will appear as if it had
been dumped from a defect-free device and the tape can be restored to any device of the same even though that device might not have
the same tracks flagged defective as the original device had. (The COpy function works this way If a track is flagged as
defective, but has no alternate assigned, a warning message is issued
and the only data transferred is the home address record and record
zero. When ALL is specified for these device types, only the primary cylinders are processed; the cylinders reserved for alternate tracks
are not processed except that an assigned alternate track is
processed whenever the corresponding defective track is processed.
However, by specifying the cylinder range explicitly (cyl1 to cyl2 format), all cylinders, including cylinders in the alternate track
area, can be dumped or copied from. But these same cylinders cannot
be restored to or copied to explicitly. It is intended that
explicitly dumped cylinders in the alternate track area will be
restored to another area via the REORDER operand. The only reason
the explicit dumping and copying of cylinders from the alternate
track area is allowed at all is to facilitate conversion of 3340 and
3344 disks that were written using early releases of V8/370. Prior
to Release 5 PLC 6, it was sometimes the practice to treat the
alternate track area as if it was just another primary cylinder and
to allow minidisks to be located there. But this is no longer permitted. INPUT 191 3330 SYSRES OUTPUT 180 2400 181 (BODE 800 SYSPRINT OOF DU8P CPVOL INPUT 130 3330 811101 DU8P 1 TO 50 REORDER 51 60 70 101 This example sets the density to 800 bpi, then dumps all pertinent
data from the volume labeled SYSRES onto the tape that is mounted on
onit 180. If the program runs out of space on the first tape, it
continues dumping onto the alternate device (181). I map of the dumped cylinders is printed on unit OOF while the program is dumping. When the
first function is complete, the volume labeled 811101 is dumped onto a new tape. Its cylinder header records are labeled 51 to 100. I map of
the dumped cylinders is printed on unit OOF. Next, cylinders 60 to 70 are dumped and labeled 101 to 111. This extent is added to the cylinder map on unit OOF. When the DDR processing is complete, the tapes are
unloaded and the program stops. 164 V8/370 Operator's Guide
Previous Page Next Page