+++ /dev/null
-<?php
-/**
- * @file
- * @ingroup Maintenance
- */
-
-$wgUseRootUser = true;
-require_once( 'commandLine.inc' );
-
-//$wgDebugLogFile = '/dev/stdout';
-
-$slaveIndexes = array();
-for ( $i = 1; $i < count( $wgDBservers ); $i++ ) {
- if ( wfGetLB()->isNonZeroLoad( $i ) ) {
- $slaveIndexes[] = $i;
- }
-}
-/*
-foreach ( wfGetLB()->mServers as $i => $server ) {
- wfGetLB()->mServers[$i]['flags'] |= DBO_DEBUG;
-}*/
-$reportingInterval = 1000;
-
-if ( isset( $args[0] ) ) {
- desyncFixPage( $args[0] );
-} else {
- $dbw = wfGetDB( DB_MASTER );
- $maxPage = $dbw->selectField( 'page', 'MAX(page_id)', false, 'fixDesync.php' );
- $corrupt = findPageLatestCorruption();
- foreach ( $corrupt as $id => $dummy ) {
- desyncFixPage( $id );
- }
- /*
- for ( $i=1; $i <= $maxPage; $i++ ) {
- desyncFixPage( $i );
- if ( !($i % $reportingInterval) ) {
- print "$i\n";
- }
- }*/
-}
-
-function findPageLatestCorruption() {
- $desync = array();
- $n = 0;
- $dbw = wfGetDB( DB_MASTER );
- $masterIDs = array();
- $res = $dbw->select( 'page', array( 'page_id', 'page_latest' ), array( 'page_id<6054123' ), __METHOD__ );
- print "Number of pages: " . $dbw->numRows( $res ) . "\n";
- while ( $row = $dbw->fetchObject( $res ) ) {
- $masterIDs[$row->page_id] = $row->page_latest;
- if ( !( ++$n % 10000 ) ) {
- print "$n\r";
- }
- }
- print "\n";
- $dbw->freeResult( $res );
-
- global $slaveIndexes;
- foreach ( $slaveIndexes as $i ) {
- $db = wfGetDB( $i );
- $res = $db->select( 'page', array( 'page_id', 'page_latest' ), array( 'page_id<6054123' ), __METHOD__ );
- while ( $row = $db->fetchObject( $res ) ) {
- if ( isset( $masterIDs[$row->page_id] ) && $masterIDs[$row->page_id] != $row->page_latest ) {
- $desync[$row->page_id] = true;
- print $row->page_id . "\t";
- }
- }
- $db->freeResult( $res );
- }
- print "\n";
- return $desync;
-}
-
-function desyncFixPage( $pageID ) {
- global $slaveIndexes;
- $fname = 'desyncFixPage';
-
- # Check for a corrupted page_latest
- $dbw = wfGetDB( DB_MASTER );
- $dbw->begin();
- $realLatest = $dbw->selectField( 'page', 'page_latest', array( 'page_id' => $pageID ),
- $fname, 'FOR UPDATE' );
- #list( $masterFile, $masterPos ) = $dbw->getMasterPos();
- $found = false;
- foreach ( $slaveIndexes as $i ) {
- $db = wfGetDB( $i );
- /*
- if ( !$db->masterPosWait( $masterFile, $masterPos, 10 ) ) {
- echo "Slave is too lagged, aborting\n";
- $dbw->commit();
- sleep(10);
- return;
- }*/
- $latest = $db->selectField( 'page', 'page_latest', array( 'page_id' => $pageID ), $fname );
- $max = $db->selectField( 'revision', 'MAX(rev_id)', false, $fname );
- if ( $latest != $realLatest && $realLatest < $max ) {
- print "page_latest corrupted in page $pageID, server $i\n";
- $found = true;
- break;
- }
- }
- if ( !$found ) {
- print "page_id $pageID seems fine\n";
- $dbw->commit();
- return;
- }
-
- # Find the missing revisions
- $res = $dbw->select( 'revision', array( 'rev_id' ), array( 'rev_page' => $pageID ),
- $fname, 'FOR UPDATE' );
- $masterIDs = array();
- while ( $row = $dbw->fetchObject( $res ) ) {
- $masterIDs[] = $row->rev_id;
- }
- $dbw->freeResult( $res );
-
- $res = $db->select( 'revision', array( 'rev_id' ), array( 'rev_page' => $pageID ), $fname );
- $slaveIDs = array();
- while ( $row = $db->fetchObject( $res ) ) {
- $slaveIDs[] = $row->rev_id;
- }
- $db->freeResult( $res );
- if ( count( $masterIDs ) < count( $slaveIDs ) ) {
- $missingIDs = array_diff( $slaveIDs, $masterIDs );
- if ( count( $missingIDs ) ) {
- print "Found " . count( $missingIDs ) . " lost in master, copying from slave... ";
- $dbFrom = $db;
- $found = true;
- $toMaster = true;
- } else {
- $found = false;
- }
- } else {
- $missingIDs = array_diff( $masterIDs, $slaveIDs );
- if ( count( $missingIDs ) ) {
- print "Found " . count( $missingIDs ) . " missing revision(s), copying from master... ";
- $dbFrom = $dbw;
- $found = true;
- $toMaster = false;
- } else {
- $found = false;
- }
- }
-
- if ( $found ) {
- foreach ( $missingIDs as $rid ) {
- print "$rid ";
- # Revision
- $row = $dbFrom->selectRow( 'revision', '*', array( 'rev_id' => $rid ), $fname );
- if ( $toMaster ) {
- $id = $dbw->selectField( 'revision', 'rev_id', array( 'rev_id' => $rid ),
- $fname, 'FOR UPDATE' );
- if ( $id ) {
- echo "Revision already exists\n";
- $found = false;
- break;
- } else {
- $dbw->insert( 'revision', get_object_vars( $row ), $fname, 'IGNORE' );
- }
- } else {
- foreach ( $slaveIndexes as $i ) {
- $db = wfGetDB( $i );
- $db->insert( 'revision', get_object_vars( $row ), $fname, 'IGNORE' );
- }
- }
-
- # Text
- $row = $dbFrom->selectRow( 'text', '*', array( 'old_id' => $row->rev_text_id ), $fname );
- if ( $toMaster ) {
- $dbw->insert( 'text', get_object_vars( $row ), $fname, 'IGNORE' );
- } else {
- foreach ( $slaveIndexes as $i ) {
- $db = wfGetDB( $i );
- $db->insert( 'text', get_object_vars( $row ), $fname, 'IGNORE' );
- }
- }
- }
- print "done\n";
- }
-
- if ( $found ) {
- print "Fixing page_latest... ";
- if ( $toMaster ) {
- #$dbw->update( 'page', array( 'page_latest' => $realLatest ), array( 'page_id' => $pageID ), $fname );
- } else {
- foreach ( $slaveIndexes as $i ) {
- $db = wfGetDB( $i );
- $db->update( 'page', array( 'page_latest' => $realLatest ), array( 'page_id' => $pageID ), $fname );
- }
- }
- print "done\n";
- }
- $dbw->commit();
-}
-
-
scripts.mit.edu / autoinstallsdev / mediawiki.git / blobdiff