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More improvements using pg_resetxlog. still disabled.

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This commit is contained in:
Bruce Momjian 2002-01-11 00:27:42 +00:00
parent 9ab1872ef4
commit 5370cd6b03
1 changed files with 47 additions and 22 deletions
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69
src/bin/pg_dump/pg_upgrade
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@ -3,7 +3,7 @@
# pg_upgrade: update a database without needing a full dump/reload cycle.
# CAUTION: read the manual page before trying to use this!
# $Header: /cvsroot/pgsql/src/bin/pg_dump/Attic/pg_upgrade,v 1.22 2002/01/10 04:58:19 momjian Exp $
# $Header: /cvsroot/pgsql/src/bin/pg_dump/Attic/pg_upgrade,v 1.23 2002/01/11 00:27:42 momjian Exp $
#
# NOTE: we must be sure to update the version-checking code a few dozen lines
# below for each new PostgreSQL release.
@ -121,11 +121,33 @@ case "$SRC_VERSION" in
exit 1;;
esac
pg_resetxlog 2>/dev/null
if [ "$?" -ne 1 ]
then echo "Unable to find pg_resetxlog in path.
Install it from pgsql/contrib/pg_resetxlog and continue.; exiting" 1>&2
exit 1
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
exit 1
fi
# We need a high XID number so there is 1 gig gap in XID numbers so the
# moved-over rows can be frozen on next VACUUM.
XID=`pg_resetxlog -n "$OLDDIR" | grep "NextXID" | awk -F' *' '{print $4}'`
if [ "$SRC_VERSION" = "7.1" -a "$XID" -gt 2000000000 ]
then echo "XID too high for $0.; exiting" 1>&2
exit 1
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.
cat $SCHEMA | awk -F' ' '{
if ("'"$SRC_VERSION"'" == "7.1" &&
$1 == "CREATE" &&
@ -169,6 +191,7 @@ fi
# Now vacuum each result database in case our transaction increase
# causes all the XID's to be marked with the frozen XID.
psql -d template1 -At -c "SELECT datname FROM pg_database" | while read DB
do
echo "VACUUM;" | psql "$DB"
@ -189,6 +212,7 @@ fi
# we are done with SQL database access
# shutdown forces buffers to disk
pg_ctl stop
if [ "$?" -ne 0 ]
then echo "Unable to stop database server.; exiting" 1>&2
@ -282,30 +306,31 @@ to $NEWOID failed.; exiting" 1>&2
fi
done
# 7.1 has non-compressed log file format
if [ "$SRC_VERSION" = "7.1" ]
then
# pg_log is oid 1269 in 7.1
LOGSIZE=`ls -l "$OLDDIR"/global/1269 "$OLDDIR"/global/1269.* 2>/dev/null |
awk -F' *' '
BEGIN {sum=0;}
{sum += $5;}
END {print sum;}'`
# check < 2gig
# set max transaction id
else
rm -r data/pg_clog &&
mv "$OLDDIR"/data/pg_clog data/pg_clog &&
mv "$OLDDIR"/data/global/pg_control data/global/pg_control
if [ "$?" -ne 0 ]
then echo "Moving of transaction and control files failed.; exiting" 1>&2
exit 1
fi
# Set this so the next VACUUM sets the old row XID's as "frozen"
pg_resetxlog -x "$XID" data
if [ "$?" -ne 0 ]
then echo "Unable to set new XID.; exiting" 1>&2
exit 1
fi
# set last checkpoint location from old database
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
exit 1
fi
pg_resetxlog -l `echo "$CHKPOINT | tr '/' ' '` data
if [ "$?" -ne 0 ]
then echo "Unable to set new checkpoint location.; exiting" 1>&2
exit 1
fi
# Restart server with moved data
pg_ctl start
if [ "$?" -ne 0 ]
then echo "Unable to restart database server.; exiting" 1>&2