mirror of https://github.com/postgres/postgres
Bruce Momjian
24 years ago
parent
8e76187790
commit
50c9557500
@ -1,532 +0,0 @@ |
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#!/bin/sh |
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# |
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# pg_upgrade: update a database without needing a full dump/reload cycle. |
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# CAUTION: Read the manual page before trying to use this! |
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# $Header: /cvsroot/pgsql/src/bin/pg_dump/Attic/pg_upgrade,v 1.34 2002/01/13 17:52:00 momjian Exp $ |
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# |
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# NOTE: we must be sure to update the version-checking code a few dozen lines |
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# below for each new PostgreSQL release. |
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#set -x |
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# Set this to "Y" to enable this program |
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ENABLE="N" |
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if [ "$ENABLE" != "Y" ] |
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then |
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echo "Sorry, $0 cannot upgrade database |
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version $SRC_VERSION to $DST_VERSION." 1>&2 |
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echo "The on-disk structure of tables has changed." 1>&2 |
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echo "You will need to dump and restore using pg_dumpall." 1>&2 |
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exit 1 |
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fi |
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# UPGRADE_VERSION is the expected old database version |
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UPGRADE_VERSION="7.1" |
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CUR_VERSION="7.2" |
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trap "rm -f /tmp/$$.*" 0 1 2 3 15 |
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PHASE="" |
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if [ "$#" -eq 1 ] |
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then |
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if [ "X$1" = "X-1" ] |
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then PHASE="1" |
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shift |
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elif [ "X$1" = "X-2" ] |
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then PHASE="2" |
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shift |
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fi |
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fi |
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if [ "$PHASE" = "" ] |
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then echo "You must run $0 in either mode 1 or mode 2." 1>&2 |
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echo "Usage: $0 [ -1 | -2 ]" 1>&2 |
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exit 1 |
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fi |
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if [ ! -e data ] |
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then echo "$0 must be run from the directory above your /data directory. |
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$0 aborted." 1>&2 |
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if [ "$PHASE" -eq 2 ] |
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then echo "You must run initdb to create a template1 database." 1>&2 |
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fi |
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exit 1 |
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fi |
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INFODIR="pg_upgrade_info" |
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OLDDIR="$INFODIR/data" |
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make_dbobjoidmap() |
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{ |
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psql -d template1 -At -c "SELECT datname FROM pg_database" | |
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grep -v '^template0$' | |
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while read DB |
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do |
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QUERY="`echo \" SELECT relname, oid |
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FROM pg_class |
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WHERE relkind = 'r' OR |
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relkind = 'i' OR |
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relkind = 't'\"`" |
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# Don't move over 7.1 int4 sequences; use setval() file. |
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# Sequence XIDs changed from 7.2beta4 to beta5; don't copy them. |
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if [ "$SRC_VERSION" != "7.1" -a \ |
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"$SRC_VERSION" != "7.2" ] |
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then QUERY="$QUERY OR relkind = 'S';"; |
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QUERY="$QUERY;" |
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fi |
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psql -d "$DB" -At -F' ' -c "$QUERY" | |
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while read RELNAME_OID |
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do |
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echo "$DB $RELNAME_OID" |
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done |
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done |
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} |
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make_dboidmap() |
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{ |
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psql -d template1 -At -F' ' -c \ |
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'SELECT datname, oid FROM pg_database;' | |
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grep -v '^template0$' |
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} |
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move_objfiles() |
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{ |
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# Test to make sure there is a matching file in each place |
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if [ ! -e "$OLDDIR"/base/"$SRC_DBOID"/"$SRC_OID" ] |
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then echo "Move of database $DB, OID $SRC_OID, object $OBJ failed. |
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File not found; exiting" 1>&2 |
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exit 1 |
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fi |
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if [ ! -e data/base/"$DST_DBOID"/"$DST_OID" ] |
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then echo "Move of database $DB, OID $DST_OID, object $OBJ failed. |
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File not found; exiting" 1>&2 |
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exit 1 |
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fi |
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# Move files |
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mv -f "$OLDDIR"/base/"$SRC_DBOID"/"$SRC_OID" data/base/"$DST_DBOID"/"$DST_OID" |
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if [ "$?" -ne 0 ] |
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then echo "Move of database $DB, OID $SRC_OID, object $OBJ |
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to $DST_OID failed.; exiting" 1>&2 |
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exit 1 |
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fi |
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# handle table extents |
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ls "$OLDDIR"/base/"$SRC_DBOID"/"$SRC_OID".* 2>/dev/null | while read FILE |
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do |
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EXT=`basename "$FILE" | sed 's/^.*\.\(.*\)$/\1/'` |
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mv -f "$FILE" data/base/"$DST_DBOID"/"$DST_OID"."$EXT" |
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if [ "$?" -ne 0 ] |
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then echo "Move of database $DB, OID $SRC_OID, object $OBJ |
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to $DST_OID failed.; exiting" 1>&2 |
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exit 1 |
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fi |
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done |
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} |
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if [ "$PHASE" -eq 1 ] |
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then |
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########################## |
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# Phase 1 starts here # |
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########################## |
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if [ ! -d data/base/1 ] |
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then echo "There is no database template1 in data/base." 1>&2 |
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exit 1 |
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fi |
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# get version |
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SRC_VERSION="`cat data/PG_VERSION`" |
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if [ "$SRC_VERSION" = "" ] |
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then echo "$0 can not find PostgreSQL version file 'data/PG_VERSION'. |
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$0 aborted." 1>&2 |
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exit 1 |
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fi |
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if [ "$SRC_VERSION" != "$CUR_VERSION" -a \ |
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"$SRC_VERSION" != "$UPGRADE_VERSION" ] |
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then echo |
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"$0 supports versions $UPGRADE_VERSION and $CUR_VERSION only." 1>&2 |
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echo |
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"However, your database is version $SRC_VERSION; |
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$0 aborted." 1>&2 |
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echo "You will need to dump and restore using pg_dumpall." 1>&2 |
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exit 1 |
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fi |
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# Start server, if needed, so we can do some work. |
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if ! pg_ctl status | head -1 | grep -q "is running" |
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then pg_ctl -w start |
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if [ $? -ne 0 ] |
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then echo "Can not start server. |
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$0 aborted." 1>&2 |
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exit 1 |
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fi |
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fi |
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# create directory for our data |
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rm -rf "$INFODIR" |
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mkdir "$INFODIR" |
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chmod og-rwx "$INFODIR" |
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# Dump schema |
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pg_dumpall -s | |
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awk -F' *' ' |
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{ |
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# Modify sequences with int8 maximums if we are upgrading from 7.1. |
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if ("'"$SRC_VERSION"'" == "7.1" && |
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$1 == "CREATE" && |
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$2 == "SEQUENCE" && |
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# handle OS rounding |
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$9 >= 2147483646 && |
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$9 <= 2147483648) |
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{ |
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for(i=1; i <= NF; i++) |
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{ |
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if (i != 9) |
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printf "%s ", $i; |
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else |
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printf "%s ", "9223372036854775807"; |
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} |
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print ""; |
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} |
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else print $0; |
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}' > "$INFODIR"/schema |
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if [ $? -ne 0 ] |
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then echo "Can not dump schema. |
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$0 aborted." 1>&2 |
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exit 1 |
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fi |
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# Generate mappings for database |
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make_dboidmap > "$INFODIR"/dboidmap |
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make_dbobjoidmap > "$INFODIR"/dbobjoidmap |
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# Generate setval() script for 7.1 because it has int4 sequences |
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# Sequence XIDs changed from 7.2beta4 to beta5; we have to recreate them. |
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if [ "$SRC_VERSION" = "7.1" -o \ |
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"$SRC_VERSION" = "7.2" ] |
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then |
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psql -d template1 -At -c "SELECT datname FROM pg_database" | |
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grep -v '^template0$' | |
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while read DB |
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do |
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# We use awk as a portable way to output a backslash |
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awk 'BEGIN {print "\\connect '"$DB"'"}' |
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psql -d "$DB" -At -c " |
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SELECT relname |
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FROM pg_class |
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WHERE relkind = 'S';" | |
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while read SEQUENCE |
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do |
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VALUE=`psql -d "$DB" -At -c "SELECT last_value |
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FROM \"$SEQUENCE\";"` |
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echo "SELECT setval ('$SEQUENCE', $VALUE, true);" |
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done |
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done > "$INFODIR"/setval |
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else rm -f "$INFODIR"/setval |
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fi |
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# Vacuum all databases to remove exipired rows. |
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# We will lose our transaction log file during the upgrade so we |
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# have to do this. |
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vacuumdb -a |
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if [ $? -ne 0 ] |
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then echo "Can not vacuum server. |
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$0 aborted." 1>&2 |
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exit 1 |
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fi |
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# Stop server so we can move the directory. |
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pg_ctl -w stop |
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if [ $? -ne 0 ] |
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then echo "Can not stop server. |
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$0 aborted." 1>&2 |
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exit 1 |
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fi |
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mv data "$INFODIR" |
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if [ $? -ne 0 ] |
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then echo "Can not move old /data out of the way. |
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$0 aborted." 1>&2 |
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exit 1 |
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fi |
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echo |
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echo |
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echo "Plase 1 completed. |
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Continue with the steps outlined in the $0 manual page." |
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exit 0 |
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fi |
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########################## |
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# Phase 2 starts here # |
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########################## |
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# check things |
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if [ ! -d "$INFODIR" ] |
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then echo "There is no '$INFODIR' directory from a phase 1 run of $0." 1>&2 |
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exit 1 |
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fi |
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if [ ! -e "$OLDDIR" ] |
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then echo "There is no '$OLDDIR' directory from the phase 1 run of $0." 1>&2 |
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exit 1 |
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fi |
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if [ ! -f "$OLDDIR/PG_VERSION" ] |
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then echo "Cannot read '$OLDDIR/PG_VERSION' --- something is wrong." 1>&2 |
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exit 1 |
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fi |
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if [ ! -f "data/PG_VERSION" ] |
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then echo "Cannot read 'data/PG_VERSION' --- something is wrong." 1>&2 |
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exit 1 |
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fi |
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if [ ! -d "data/base/1" ] |
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then echo "Cannot find database template1 in 'data/base'." 1>&2 |
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echo "Are you running $0 as the postgres superuser?" 1>&2 |
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exit 1 |
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fi |
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# Get the actual versions seen in the data dirs. |
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SRC_VERSION=`cat "$OLDDIR"/PG_VERSION` |
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DST_VERSION=`cat data/PG_VERSION` |
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# Check for version compatibility. |
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# This code will need to be updated/reviewed for each new PostgreSQL release. |
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if [ "$DST_VERSION" != "$CUR_VERSION" ] |
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then echo "$0 is for PostgreSQL version $CUR_VERSION |
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but data/PG_VERSION contains $DST_VERSION." 1>&2 |
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echo "Did you run initdb for version $UPGRADE_VERSION by mistake?" 1>&2 |
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exit 1 |
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fi |
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# Stop server for pg_resetxlog use |
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if pg_ctl status | head -1 | grep -q "is running" |
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then pg_ctl -w stop |
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if [ $? -ne 0 ] |
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then echo "Can no start server. |
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$0 aborted." 1>&2 |
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exit 1 |
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fi |
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fi |
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# check for proper pg_resetxlog version |
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pg_resetxlog 2>/dev/null |
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# file not found status is normally 127, not 1 |
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if [ "$?" -ne 1 ] |
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then echo "Unable to find pg_resetxlog in path. |
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Install it from pgsql/contrib/pg_resetxlog and continue.; exiting" 1>&2 |
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exit 1 |
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fi |
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if ! pg_resetxlog -x 2>&1 | grep -q 'xid' |
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then echo "Old version of pg_resetxlog found in path. |
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Install a newer version from pgsql/contrib/pg_resetxlog.; exiting" 1>&2 |
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exit 1 |
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fi |
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# If the XID is > 2 billion, 7.1 database will have non-frozen XID's in |
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# low numbers, and 7.2 will think they are in the future --- bad. |
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SRC_XID=`pg_resetxlog -n "$OLDDIR" | grep "NextXID" | awk -F' *' '{print $4}'` |
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if [ "$SRC_VERSION" = "7.1" -a "$SRC_XID" -gt 2000000000 ] |
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then echo "XID too high for $0.; exiting" 1>&2 |
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exit 1 |
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fi |
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DST_XID=`pg_resetxlog -n data | grep "NextXID" | awk -F' *' '{print $4}'` |
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# compare locales to make sure they match |
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pg_resetxlog -n "$OLDDIR" | grep "^LC_" > /tmp/$$.0 |
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pg_resetxlog -n data | grep "^LC_" > /tmp/$$.1 |
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if ! diff /tmp/$$.0 /tmp/$$.1 >/dev/null |
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then echo "Locales do not match between the two versions.; exiting" 1>&2 |
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exit 1 |
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fi |
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# Restart postmaster |
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pg_ctl -w start |
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if [ $? -ne 0 ] |
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then echo "Can not start server. |
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$0 aborted." 1>&2 |
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exit 1 |
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fi |
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################################### |
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# Checking done. Ready to proceed. |
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################################### |
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# Execute the schema script to create everything |
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psql template1 < "$INFODIR"/schema |
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if [ $? -ne 0 ] |
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then echo "There were errors in the input script. |
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$0 aborted." 1>&2 |
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exit 1 |
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fi |
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echo "Input script complete, fixing row commit statuses..." |
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# XXX do we still need this? |
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# Now vacuum each result database because our movement of transaction log |
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# causes some committed transactions to appear as non-committed |
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vacuumdb -a |
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if [ $? -ne 0 ] |
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then echo "There were errors during VACUUM. |
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$0 aborted." 1>&2 |
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exit 1 |
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fi |
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# Generate mappings for database |
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make_dboidmap > /tmp/$$.dboidmap |
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make_dbobjoidmap > /tmp/$$.dbobjoidmap |
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# we are done with SQL database access |
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# shutdown forces buffers to disk |
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pg_ctl -w stop |
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if [ "$?" -ne 0 ] |
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then echo "Unable to stop database server.; exiting" 1>&2 |
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exit 1 |
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fi |
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echo "Commit fixes complete, moving data files..." |
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# Move table/index/sequence files |
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cat "$INFODIR"/dbobjoidmap | while read LINE |
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do |
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DB=`echo "$LINE" | awk '{print $1}'` |
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OBJ=`echo "$LINE" | awk '{print $2}'` |
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# Skip system tables, except for pg_largeobject |
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# pg_toast tables are handled later as part of the |
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# base table move |
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if [ `expr "$OBJ" : 'pg_'` -eq 3 -a \ |
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`expr "$OBJ" : 'pg_largeobject'` -ne 14 ] |
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then continue |
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fi |
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SRC_OID=`echo "$LINE" | awk '{print $3}'` |
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SRC_DBOID=`grep "^$DB " "$INFODIR"/dboidmap | awk '{print $2}'` |
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DST_DBOID=`grep "^$DB " /tmp/$$.dboidmap | awk '{print $2}'` |
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DST_OID=`grep "^$DB $OBJ " /tmp/$$.dbobjoidmap | awk '{print $3}'` |
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move_objfiles |
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# Handle TOAST files if they exist |
|
||||||
if grep -q "^$DB pg_toast_$SRC_OID " "$INFODIR"/dbobjoidmap |
|
||||||
then # toast heap |
|
||||||
SAVE_SRC_OID="$SRC_OID" |
|
||||||
SAVE_DST_OID="$DST_OID" |
|
||||||
SRC_OID=`grep "^$DB pg_toast_$SAVE_SRC_OID " \ |
|
||||||
"$INFODIR"/dbobjoidmap | awk '{print $3}'` |
|
||||||
DST_OID=`grep "^$DB pg_toast_$SAVE_DST_OID " \ |
|
||||||
/tmp/$$.dbobjoidmap | awk '{print $3}'` |
|
||||||
move_objfiles |
|
||||||
# toast index |
|
||||||
SRC_OID=`grep "^$DB pg_toast_${SAVE_SRC_OID}_idx " \ |
|
||||||
"$INFODIR"/dbobjoidmap | awk '{print $3}'` |
|
||||||
DST_OID=`grep "^$DB pg_toast_${SAVE_DST_OID}_idx " \ |
|
||||||
/tmp/$$.dbobjoidmap | awk '{print $3}'` |
|
||||||
move_objfiles |
|
||||||
fi |
|
||||||
done |
|
||||||
|
|
||||||
|
|
||||||
# Set this so future backends don't think these tuples are their own |
|
||||||
# because it matches their own XID. |
|
||||||
# Commit status already updated by vacuum above |
|
||||||
# Set to maximum XID just in case SRC wrapped around recently and |
|
||||||
# is lower than DST's database |
|
||||||
|
|
||||||
if [ "$SRC_XID" -gt "$DST_XID" ] |
|
||||||
then MAX_XID="$SRC_XID" |
|
||||||
else MAX_XID="$DST_XID" |
|
||||||
fi |
|
||||||
|
|
||||||
pg_resetxlog -x "$MAX_XID" data |
|
||||||
if [ "$?" -ne 0 ] |
|
||||||
then echo "Unable to set new XID.; exiting" 1>&2 |
|
||||||
exit 1 |
|
||||||
fi |
|
||||||
|
|
||||||
# Move over old WAL |
|
||||||
|
|
||||||
rm -r data/pg_xlog |
|
||||||
mv -f "$OLDDIR"/pg_xlog data |
|
||||||
|
|
||||||
# Set last log file id and segment from old database |
|
||||||
|
|
||||||
LOG_ID=`pg_resetxlog -n "$OLDDIR" | grep "Current log file id:" | |
|
||||||
awk -F' *' '{print $5}'` |
|
||||||
if [ "$LOG_ID" = "" ] |
|
||||||
then echo "Unable to get old log file id.; exiting" 1>&2 |
|
||||||
exit 1 |
|
||||||
fi |
|
||||||
SEG_ID=`pg_resetxlog -n "$OLDDIR" | grep "Next log file segment:" | |
|
||||||
awk -F' *' '{print $5}'` |
|
||||||
if [ "$SEG_ID" = "" ] |
|
||||||
then echo "Unable to get old log segment id.; exiting" 1>&2 |
|
||||||
exit 1 |
|
||||||
fi |
|
||||||
|
|
||||||
# Set checkpoint location of new database |
|
||||||
|
|
||||||
pg_resetxlog -l "$LOG_ID" "$SEG_ID" data |
|
||||||
if [ "$?" -ne 0 ] |
|
||||||
then echo "Unable to set new log file/segment id.; exiting" 1>&2 |
|
||||||
exit 1 |
|
||||||
fi |
|
||||||
|
|
||||||
# Restart server with moved data |
|
||||||
|
|
||||||
pg_ctl -w start |
|
||||||
if [ "$?" -ne 0 ] |
|
||||||
then echo "Unable to restart database server.; exiting" 1>&2 |
|
||||||
exit 1 |
|
||||||
fi |
|
||||||
|
|
||||||
# Set sequence values for 7.1-version sequences, which were int4. |
|
||||||
|
|
||||||
if [ "$SRC_VERSION" = "7.1" -o \ |
|
||||||
"$SRC_VERSION" = "7.2" ] |
|
||||||
then echo "Set sequence values..." |
|
||||||
psql -d template1 -At < "$INFODIR"/setval |
|
||||||
if [ $? -ne 0 ] |
|
||||||
then echo "There were errors during int4 sequence restore. |
|
||||||
$0 aborted." 1>&2 |
|
||||||
exit 1 |
|
||||||
fi |
|
||||||
fi |
|
||||||
|
|
||||||
echo |
|
||||||
echo |
|
||||||
echo "You may remove the old database files with 'rm -r pg_upgrade'." |
|
||||||
|
|
||||||
exit 0 |
|
||||||
Loading…
Reference in new issue