|
DataMuseum.dkPresents historical artifacts from the history of: Rational R1000/400 |
This is an automatic "excavation" of a thematic subset of
See our Wiki for more about Rational R1000/400 Excavated with: AutoArchaeologist - Free & Open Source Software. |
top - metrics - download
Length: 3072 (0xc00)
Types: Ada Source
Notes: 03_class, FILE, R1k_Segment, e3_tag, procedure Repair_Cg_Attrs, seg_012aeb
└─⟦8527c1e9b⟧ Bits:30000544 8mm tape, Rational 1000, Arrival backup of disks in PAM's R1000
└─⟦5a81ac88f⟧ »Space Info Vol 1«
└─⟦this⟧
-- Clean up persistent garbage generated by an RCG bug.
--
-- RCG (prior to D_12_4_8) had a bug whereby attributes associated
-- with Ada objects would accidently get created twice, with the first
-- collection of attributes becoming persistent garbage. Machines have
-- been found with more than 200 megabytes of persistent (i.e., undeletable)
-- garbage.
--
-- This utility will locate orphan attributes (known as attrs), and
-- optionally remove them. It can safely be run while others are using
-- the system, although it does require the caller to be a member of the
-- privileged group.
--
-- It typically takes 1 or 2 hours on an unloaded system to identify all the
-- ophan attrs, although on a heavily loaded system (or a system with many
-- Ada objects), it may take considerably longer.
--
-- The amount of disk space which can be reclaimed is summarized
-- by the utility; the reclamation will actually occur after the next
-- disk collection.
--
-- In VERBOSE mode, the locating of an attribute (good or bad) is
-- noted; this mode is not very meaningful for anyone other than a
-- low-level implementor.
--
-- In EFFORT_ONLY mode, bad attrs are not deleted.
--
-- Special notes:
--
-- 1. A message of "KEY_NOT_FOUND" is not fatal, and merely an indication
-- that some other job has started/completed on the system.
-- 2. A message of "NONEXISTENT_PAGE_ERROR" suggests the disk has
-- a corrupt object on it. This may or may not be fatal, and has
-- no known fix other than restoring from a 'good' backup.
--
-- In theory, this routine need only be run once after moving from a
-- pre-D_12_4_8 release to a post-D_12_4_7 release.
--
procedure Repair_Cg_Attrs (Verbose : Boolean := False;
Effort_Only : Boolean := True);
nblk1=2
nid=0
hdr6=4
[0x00] rec0=17 rec1=00 rec2=01 rec3=016
[0x01] rec0=16 rec1=00 rec2=02 rec3=000
tail 0x2150d9d9482b14d40f316 0x42a00088462063203