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More updates for int8 sequence restoration. Old dump file not required

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anymore.
This commit is contained in:
Bruce Momjian 2002-01-11 05:54:59 +00:00
parent 6bd45e5264
commit 3b3b730728
1 changed files with 41 additions and 59 deletions
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100
src/bin/pg_dump/pg_upgrade
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@ -1,9 +1,9 @@
#!/bin/sh
#
# pg_upgrade: update a database without needing a full dump/reload cycle.
# CAUTION: read the manual page before trying to use this!
# CAUTION: Read the manual page before trying to use this!
# $Header: /cvsroot/pgsql/src/bin/pg_dump/Attic/pg_upgrade,v 1.24 2002/01/11 04:39:19 momjian Exp $
# $Header: /cvsroot/pgsql/src/bin/pg_dump/Attic/pg_upgrade,v 1.25 2002/01/11 05:54:59 momjian Exp $
#
# NOTE: we must be sure to update the version-checking code a few dozen lines
# below for each new PostgreSQL release.
@ -107,7 +107,7 @@ fi
if ! pg_resetxlog -x | grep -q XID
then echo "Old version of pg_resetxlog found in path.
Install a newer version from pgsql/contrib/pg_resetxlog and continue.; exiting" 1>&2
Install a newer version from pgsql/contrib/pg_resetxlog.; exiting" 1>&2
exit 1
fi
@ -122,26 +122,9 @@ fi
# Checking done. Ready to proceed.
# Execute the schema script to create everything, except modify any
# sequences with int4 maximums if we are upgrading from 7.1.
# Execute the schema script to create everything
cat $SCHEMA | awk -F' ' '{
if ("'"$SRC_VERSION"'" == "7.1" &&
$1 == "CREATE" &&
$2 == "SEQUENCE" &&
($9 >= 2147483646 && # handle OS rounding
($9 <= 2147483648))
{
for(i=1; i < NF; i++)
if (i != 9)
printf "%s ", $i;
else
printf "%s ", "9223372036854775807";
print;
}
else print $0;
}' |
psql "template1"
psql "template1" < "$SCHEMA"
if [ $? -ne 0 ]
then echo "There were errors in the input script $SCHEMA.
$0 aborted." 1>&2
@ -154,17 +137,14 @@ echo "Input script $SCHEMA complete, fixing row commit statuses..."
# Now vacuum each result database because our movement of transaction log
# causes some committed transactions to appear as non-committed
psql -d template1 -At -c "SELECT datname FROM pg_database" | while read DB
do
echo "VACUUM;" | psql "$DB"
if [ $? -ne 0 ]
then echo "There were errors during VACUUM.
vacuumdb -a
if [ $? -ne 0 ]
then echo "There were errors during VACUUM.
$0 aborted." 1>&2
exit 1
fi
done
exit 1
fi
# Used for scans looking for a database/tablename match
# Used for scans looking for a database/table name match
# New oid is looked up
pg_dumpall -s > $TMPFILE 2>/dev/null
if [ "$?" -ne 0 ]
@ -198,16 +178,7 @@ do
if echo "$LINE" | grep -q "^-- TOC Entry ID [0-9]* (OID "
then OID="`echo \"$LINE\" | cut -d' ' -f7 | tr -d ')'`"
fi
if echo "$LINE" | egrep -q "^-- Name: [^ ]* Type: (TABLE|INDEX) "
then TABLE="`echo \"$LINE\" | cut -d' ' -f3`"
# skip system tables
if [ "`echo \"$TABLE\" | cut -c 1-3`" = "pg_" ]
then TABLE=""
fi
fi
# 7.1 sequences were handled earlier because they were int4.
if test "$SRC_VERSION" != "7.1" &&
echo "$LINE" | egrep -q "^-- Name: [^ ]* Type: SEQUENCE "
if echo "$LINE" | egrep -q "^-- Name: [^ ]* Type: (TABLE|INDEX|SEQUENCE) "
then TABLE="`echo \"$LINE\" | cut -d' ' -f3`"
# skip system tables
if [ "`echo \"$TABLE\" | cut -c 1-3`" = "pg_" ]
@ -278,7 +249,7 @@ fi
# set last checkpoint location from old database
CHKPOINT=`pg_resetxlog -n "$OLDDIR" | grep "checkpoint location" |
CHKPOINT=`pg_resetxlog -n "$OLDDIR" | grep "checkpoint location:" |
awk -F' *' '{print $4}'`
if [ "$CHKPOINT" = "" ]
then echo "Unable to get old checkpoint location.; exiting" 1>&2
@ -314,7 +285,7 @@ else echo "Set int8 sequence values from 7.1..."
psql -d "$DB" -At <<SQL_END
-- This table matches the 7.1 sequence schema
CREATE TABLE temp_seq_int4 (
CREATE TABLE pg_upgrade_temp_seq_int4 (
sequence_name name
last_value integer
increment_by integer
@ -326,40 +297,51 @@ CREATE TABLE temp_seq_int4 (
is_called "char"
);
-- Move int8 version of sequence out of the way
-- Move int8 columns of sequence out of the way
UPDATE pg_attribute
SET attrelid = 1 -- OID of template1, not used anywhere else XXX correct?
WHERE attrelid = (SELECT oid FROM pg_class WHERE relname = '$SEQUENCE');
-- Replace with int4 sequence schema
-- Replace with int4 sequence columns
UPDATE pg_attribute
SET attrelid = (SELECT oid FROM pg_class WHERE relname = '$SEQUENCE')
WHERE attrelid = (SELECT oid FROM pg_class WHERE relname = 'temp_seq_int4');
SET attrelid =
(SELECT oid FROM pg_class WHERE relname = '$SEQUENCE')
WHERE attrelid =
(SELECT oid FROM pg_class WHERE relname = 'pg_upgrade_temp_seq_int4');
-- Select sequence value into temp table
CREATE TEMP TABLE hold_sequence AS
SELECT last_value
FROM "$SEQUENCE"
-- Mark sequence as ordinary table so we can do COPY
UPDATE pg_class
SET relkind = 't'
WHERE relname = '$SEQUENCE';
-- COPY sequence out
COPY "$SEQUENCE" TO '/tmp/$$';
-- Delete int4 row from sequence
-- XXX truncate ok?
TRUNCATE "$SEQUENCE";
-- Prepare int4 sequence table for removal and remove it
UPDATE pg_attribute
SET attrelid = (SELECT oid FROM pg_class WHERE relname = 'temp_seq_int4')
WHERE attrelid = (SELECT oid FROM pg_class WHERE relname = '$SEQUENCE');
SET attrelid =
(SELECT oid FROM pg_class WHERE relname = 'pg_upgrade_temp_seq_int4')
WHERE attrelid =
(SELECT oid FROM pg_class WHERE relname = '$SEQUENCE');
DROP TABLE temp_seq_int4;
DROP TABLE pg_upgrade_temp_seq_int4;
-- Restore int8 version of sequence
UPDATE pg_attribute
SET attrelid = (SELECT oid FROM pg_class WHERE relname = '$SEQUENCE')
WHERE attrelid = 1;
-- Mark sequence as ordinary table and update it
UPDATE pg_class
SET relkind = 't'
WHERE relname = '$SEQUENCE';
-- Load new values
COPY "$SEQUENCE" FROM '/tmp/$$';
-- If previous max was int4, make it int8
UPDATE "$SEQUENCE"
SET last_value = (SELECT last_value FROM hold_sequence);
SET max_value = 9223372036854775807
WHERE max_value BETWEEN 2147483646 AND 2147483648; -- OS rounding
-- Restore sequence flag
UPDATE pg_class