ClearPath OS 2200 Series Release 13.2 Software Planning and ...

Integrated Recovery Utility (IRU)
This level of IRU supports both previous and current versions of the following IRU
structures:
• Dump tapes
• Move tapes
• FSAH packets (versions 4 and 5 - version 3 is no longer supported)
FSAH applications must be able to handle new formats for records they expect to
encounter. FSAH converts packet fields to their appropriate format, but returns audit
records to the caller in whatever format exists on the audit trail being read. Note that
TDATE values in version packets are interpreted as local times on input and converted to
local times on output.
These local times use the current system offsets to generate TIMEB internally and to
convert TIMEB to TDATE if needed.
Users must initialize or Migrate history files The new IRU level handles only new format
history files. Users who wish to save existing history file information must execute the
migration utility to populate the new history files.
Users who currently have local code to alter the number of MHF entries (tapes) retained
can no longer use that method; they should change the value of MHF-MIN-TAPES
instead.
Time Specification
IRU time management mechanisms now let you choose how times are entered and
displayed, as either local time or UTC. The new configuration parameter TIMES-ARE-
LOCAL controls the base of displayed and entered times; local offsets are based on the
system time at IRU execution.
When you provide a start or end time to read an audit trail, TIMES-ARE-LOCAL must be
set to the appropriate value for the time you enter and the current offsets.
Note that times generated by previous IRU levels and other Integrated Recovery
products are TDATE based. IRU displays these times without offsets, using the
mnemonic "", without regard to the TIMES-ARE-LOCAL setting. These TDATE$
based times are assumed to be local times. In general, IRU tries to display a timestamp
in the same format and offset in which it expects to receive the time input. This means
that some local times for events that took place during a different offset period are
displayed using the current offsets; even when IRU knows the correct offsets for that
historical time.
BUILD and REPORT CONFIG changes
Configuration parameter changes in this level alter the IRU BUILD routine, introducing
several new configuration parameters. In addition, DHF-BLK-SIZE parameter was
removed; the DHF block size is no longer configurable.
REPORT CONFIG output is also altered.
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