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REPAIR
COMMAND
22. 5 -- CAT Regeneration Phase
will cause the Outer file to be deleted.
As long as the "Outer file is not
d~lete~1
all
of
the
files
that have conTlicts with it will be displayed as Inner
files.
When all Inner files conflicting with the Outer
file
have
been
displayed
in
this rashionl
REPAIR will
take the
next file in its list of files with allocation conflicts
and
use
i t
as
an Outer file.
This process continues until
all
files with allocation conflicts have been dealt
~ith.
Conflicting pairs of files will
be
printed
only
once.
An
Inner file may subsequently be displayed as an Outer file
ir it has additional conflicts with other
files.
As
files
are
deleted,
other
files
that were originally in conflict
with it may no longer have allocation conflicts.
Usually,
the REPAIR command will be
used mOTe
than
once
if
files
happen
to
have
allocation conflicts.
The first
time,
the operator will pick the
"NEITHER"
selection from the
above prompt.
In this UJayl
he can accumulate the information
required to decide which files should be
deleted
and
which
should
be retained.
The DUMP command may be used to examine
the conflicting clusters to
See
which
file
theq
actually
bel on g
to.
Th en
I
REP A I R
i
s
l'
una sec
0
n d tim e to act ua
1 1
Y
delete the files in error.
The files
must
not
be
deleted
with the DEL command since
i t
deallocates the files' space in
addition to deleting the directory entries."
For
riles
with
allocation
conrlicts,
~ollowing
statements may be
t~ue:
one
of
1.
The Outer file may have a correct RIB and contain
all valid data.
Thus,
the error is caused by the
Inner
files
that have allocation conflicts with
the Outer file.
2.
The
Outer
file
may
have
an
incorrect
or
o v e
l' \Ill'
itt en
RIB.
I nth
i
s cas e
j
the Inn e
l'
f i
1
e s
having allocation conflicts with the
Outer
file
are all correct."
3.
Some
of the Outer file's existing space may have
been
erroneously
allocated
to,
and
possibly
o v e rwr itt en
by,
a n
Inn e r
-F i 1 e .
I nth a t cas e
I
since the Inner file was
written
to
last,
the
Inner
file
contains
valid data and has a valid
RIB even though its space
was
allocated by
error.
4.
Some of the Inner file's existing space may
have
been
erroneously
allocated
tOI
and
possibly
overwritten by,
~n
Outer
file.
In
that
case,
sin c e
the
0 ute
l'
f i 1
e
wa s wr itt en to
1
a s
t ,
the
Outer rile contains valid data and
has
a
valid
RID even though its space was allocated by error.
the
Page
22-17
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