cleanup old and not needed repair steps to speed up the update

Signed-off-by: Morris Jobke <hey@morrisjobke.de>

17 files changed, 0 insertions, 1540 deletions

diff --git a/lib/composer/composer/autoload_classmap.php b/lib/composer/composer/autoload_classmap.php
index eec6d23dce3..19eb4ca7df6 100644
--- a/lib/composer/composer/autoload_classmap.php
+++ b/lib/composer/composer/autoload_classmap.php
@@ -679,13 +679,8 @@ return array(
     'OC\\RedisFactory' => $baseDir . '/lib/private/RedisFactory.php',
     'OC\\Repair' => $baseDir . '/lib/private/Repair.php',
     'OC\\RepairException' => $baseDir . '/lib/private/RepairException.php',
-    'OC\\Repair\\AssetCache' => $baseDir . '/lib/private/Repair/AssetCache.php',
     'OC\\Repair\\CleanTags' => $baseDir . '/lib/private/Repair/CleanTags.php',
     'OC\\Repair\\Collation' => $baseDir . '/lib/private/Repair/Collation.php',
-    'OC\\Repair\\DropOldJobs' => $baseDir . '/lib/private/Repair/DropOldJobs.php',
-    'OC\\Repair\\DropOldTables' => $baseDir . '/lib/private/Repair/DropOldTables.php',
-    'OC\\Repair\\FillETags' => $baseDir . '/lib/private/Repair/FillETags.php',
-    'OC\\Repair\\InnoDB' => $baseDir . '/lib/private/Repair/InnoDB.php',
     'OC\\Repair\\MoveUpdaterStepFile' => $baseDir . '/lib/private/Repair/MoveUpdaterStepFile.php',
     'OC\\Repair\\NC11\\CleanPreviews' => $baseDir . '/lib/private/Repair/NC11/CleanPreviews.php',
     'OC\\Repair\\NC11\\CleanPreviewsBackgroundJob' => $baseDir . '/lib/private/Repair/NC11/CleanPreviewsBackgroundJob.php',
@@ -693,17 +688,10 @@ return array(
     'OC\\Repair\\NC11\\MoveAvatars' => $baseDir . '/lib/private/Repair/NC11/MoveAvatars.php',
     'OC\\Repair\\NC11\\MoveAvatarsBackgroundJob' => $baseDir . '/lib/private/Repair/NC11/MoveAvatarsBackgroundJob.php',
     'OC\\Repair\\OldGroupMembershipShares' => $baseDir . '/lib/private/Repair/OldGroupMembershipShares.php',
-    'OC\\Repair\\Preview' => $baseDir . '/lib/private/Repair/Preview.php',
-    'OC\\Repair\\RemoveGetETagEntries' => $baseDir . '/lib/private/Repair/RemoveGetETagEntries.php',
-    'OC\\Repair\\RemoveOldShares' => $baseDir . '/lib/private/Repair/RemoveOldShares.php',
     'OC\\Repair\\RemoveRootShares' => $baseDir . '/lib/private/Repair/RemoveRootShares.php',
     'OC\\Repair\\RepairInvalidShares' => $baseDir . '/lib/private/Repair/RepairInvalidShares.php',
     'OC\\Repair\\RepairMimeTypes' => $baseDir . '/lib/private/Repair/RepairMimeTypes.php',
-    'OC\\Repair\\RepairUnmergedShares' => $baseDir . '/lib/private/Repair/RepairUnmergedShares.php',
-    'OC\\Repair\\SearchLuceneTables' => $baseDir . '/lib/private/Repair/SearchLuceneTables.php',
-    'OC\\Repair\\SharePropagation' => $baseDir . '/lib/private/Repair/SharePropagation.php',
     'OC\\Repair\\SqliteAutoincrement' => $baseDir . '/lib/private/Repair/SqliteAutoincrement.php',
-    'OC\\Repair\\UpdateOutdatedOcsIds' => $baseDir . '/lib/private/Repair/UpdateOutdatedOcsIds.php',
     'OC\\RichObjectStrings\\Validator' => $baseDir . '/lib/private/RichObjectStrings/Validator.php',
     'OC\\Route\\CachingRouter' => $baseDir . '/lib/private/Route/CachingRouter.php',
     'OC\\Route\\Route' => $baseDir . '/lib/private/Route/Route.php',
diff --git a/lib/composer/composer/autoload_static.php b/lib/composer/composer/autoload_static.php
index 9967b709c3d..e1b5e025d0b 100644
--- a/lib/composer/composer/autoload_static.php
+++ b/lib/composer/composer/autoload_static.php
@@ -709,13 +709,8 @@ class ComposerStaticInit53792487c5a8370acc0b06b1a864ff4c
         'OC\\RedisFactory' => __DIR__ . '/../../..' . '/lib/private/RedisFactory.php',
         'OC\\Repair' => __DIR__ . '/../../..' . '/lib/private/Repair.php',
         'OC\\RepairException' => __DIR__ . '/../../..' . '/lib/private/RepairException.php',
-        'OC\\Repair\\AssetCache' => __DIR__ . '/../../..' . '/lib/private/Repair/AssetCache.php',
         'OC\\Repair\\CleanTags' => __DIR__ . '/../../..' . '/lib/private/Repair/CleanTags.php',
         'OC\\Repair\\Collation' => __DIR__ . '/../../..' . '/lib/private/Repair/Collation.php',
-        'OC\\Repair\\DropOldJobs' => __DIR__ . '/../../..' . '/lib/private/Repair/DropOldJobs.php',
-        'OC\\Repair\\DropOldTables' => __DIR__ . '/../../..' . '/lib/private/Repair/DropOldTables.php',
-        'OC\\Repair\\FillETags' => __DIR__ . '/../../..' . '/lib/private/Repair/FillETags.php',
-        'OC\\Repair\\InnoDB' => __DIR__ . '/../../..' . '/lib/private/Repair/InnoDB.php',
         'OC\\Repair\\MoveUpdaterStepFile' => __DIR__ . '/../../..' . '/lib/private/Repair/MoveUpdaterStepFile.php',
         'OC\\Repair\\NC11\\CleanPreviews' => __DIR__ . '/../../..' . '/lib/private/Repair/NC11/CleanPreviews.php',
         'OC\\Repair\\NC11\\CleanPreviewsBackgroundJob' => __DIR__ . '/../../..' . '/lib/private/Repair/NC11/CleanPreviewsBackgroundJob.php',
@@ -723,17 +718,10 @@ class ComposerStaticInit53792487c5a8370acc0b06b1a864ff4c
         'OC\\Repair\\NC11\\MoveAvatars' => __DIR__ . '/../../..' . '/lib/private/Repair/NC11/MoveAvatars.php',
         'OC\\Repair\\NC11\\MoveAvatarsBackgroundJob' => __DIR__ . '/../../..' . '/lib/private/Repair/NC11/MoveAvatarsBackgroundJob.php',
         'OC\\Repair\\OldGroupMembershipShares' => __DIR__ . '/../../..' . '/lib/private/Repair/OldGroupMembershipShares.php',
-        'OC\\Repair\\Preview' => __DIR__ . '/../../..' . '/lib/private/Repair/Preview.php',
-        'OC\\Repair\\RemoveGetETagEntries' => __DIR__ . '/../../..' . '/lib/private/Repair/RemoveGetETagEntries.php',
-        'OC\\Repair\\RemoveOldShares' => __DIR__ . '/../../..' . '/lib/private/Repair/RemoveOldShares.php',
         'OC\\Repair\\RemoveRootShares' => __DIR__ . '/../../..' . '/lib/private/Repair/RemoveRootShares.php',
         'OC\\Repair\\RepairInvalidShares' => __DIR__ . '/../../..' . '/lib/private/Repair/RepairInvalidShares.php',
         'OC\\Repair\\RepairMimeTypes' => __DIR__ . '/../../..' . '/lib/private/Repair/RepairMimeTypes.php',
-        'OC\\Repair\\RepairUnmergedShares' => __DIR__ . '/../../..' . '/lib/private/Repair/RepairUnmergedShares.php',
-        'OC\\Repair\\SearchLuceneTables' => __DIR__ . '/../../..' . '/lib/private/Repair/SearchLuceneTables.php',
-        'OC\\Repair\\SharePropagation' => __DIR__ . '/../../..' . '/lib/private/Repair/SharePropagation.php',
         'OC\\Repair\\SqliteAutoincrement' => __DIR__ . '/../../..' . '/lib/private/Repair/SqliteAutoincrement.php',
-        'OC\\Repair\\UpdateOutdatedOcsIds' => __DIR__ . '/../../..' . '/lib/private/Repair/UpdateOutdatedOcsIds.php',
         'OC\\RichObjectStrings\\Validator' => __DIR__ . '/../../..' . '/lib/private/RichObjectStrings/Validator.php',
         'OC\\Route\\CachingRouter' => __DIR__ . '/../../..' . '/lib/private/Route/CachingRouter.php',
         'OC\\Route\\Route' => __DIR__ . '/../../..' . '/lib/private/Route/Route.php',
diff --git a/lib/private/Repair.php b/lib/private/Repair.php
index e8d466cd844..6344db64e8e 100644
--- a/lib/private/Repair.php
+++ b/lib/private/Repair.php
@@ -30,28 +30,17 @@
 
 namespace OC;
 
-use OC\Repair\AssetCache;
 use OC\Repair\CleanTags;
 use OC\Repair\Collation;
-use OC\Repair\DropOldJobs;
 use OC\Repair\MoveUpdaterStepFile;
 use OC\Repair\NC11\CleanPreviews;
 use OC\Repair\NC11\FixMountStorages;
 use OC\Repair\NC11\MoveAvatars;
 use OC\Repair\OldGroupMembershipShares;
-use OC\Repair\RemoveGetETagEntries;
-use OC\Repair\RemoveOldShares;
 use OC\Repair\RemoveRootShares;
-use OC\Repair\SharePropagation;
 use OC\Repair\SqliteAutoincrement;
-use OC\Repair\DropOldTables;
-use OC\Repair\FillETags;
-use OC\Repair\InnoDB;
 use OC\Repair\RepairMimeTypes;
-use OC\Repair\SearchLuceneTables;
-use OC\Repair\UpdateOutdatedOcsIds;
 use OC\Repair\RepairInvalidShares;
-use OC\Repair\RepairUnmergedShares;
 use OCP\AppFramework\QueryException;
 use OCP\Migration\IOutput;
 use OCP\Migration\IRepairStep;
@@ -131,23 +120,9 @@ class Repair implements IOutput{
 		return [
 			new Collation(\OC::$server->getConfig(), \OC::$server->getLogger(), \OC::$server->getDatabaseConnection(), false),
 			new RepairMimeTypes(\OC::$server->getConfig()),
-			new AssetCache(),
-			new FillETags(\OC::$server->getDatabaseConnection()),
 			new CleanTags(\OC::$server->getDatabaseConnection(), \OC::$server->getUserManager()),
-			new DropOldTables(\OC::$server->getDatabaseConnection()),
-			new DropOldJobs(\OC::$server->getJobList()),
-			new RemoveGetETagEntries(\OC::$server->getDatabaseConnection()),
-			new UpdateOutdatedOcsIds(\OC::$server->getConfig()),
 			new RepairInvalidShares(\OC::$server->getConfig(), \OC::$server->getDatabaseConnection()),
-			new SharePropagation(\OC::$server->getConfig()),
-			new RemoveOldShares(\OC::$server->getDatabaseConnection()),
 			new RemoveRootShares(\OC::$server->getDatabaseConnection(), \OC::$server->getUserManager(), \OC::$server->getLazyRootFolder()),
-			new RepairUnmergedShares(
-				\OC::$server->getConfig(),
-				\OC::$server->getDatabaseConnection(),
-				\OC::$server->getUserManager(),
-				\OC::$server->getGroupManager()
-			),
 			new MoveUpdaterStepFile(\OC::$server->getConfig()),
 			new MoveAvatars(
 				\OC::$server->getJobList(),
@@ -183,20 +158,10 @@ class Repair implements IOutput{
 	public static function getBeforeUpgradeRepairSteps() {
 		$connection = \OC::$server->getDatabaseConnection();
 		$steps = [
-			new InnoDB(),
 			new Collation(\OC::$server->getConfig(), \OC::$server->getLogger(), $connection, true),
 			new SqliteAutoincrement($connection),
-			new SearchLuceneTables(),
 		];
 
-		//There is no need to delete all previews on every single update
-		//only 7.0.0 through 7.0.2 generated broken previews
-		$currentVersion = \OC::$server->getConfig()->getSystemValue('version');
-		if (version_compare($currentVersion, '7.0.0.0', '>=') &&
-			version_compare($currentVersion, '7.0.3.4', '<=')) {
-			$steps[] = new \OC\Repair\Preview();
-		}
-
 		return $steps;
 	}
 
diff --git a/lib/private/Repair/AssetCache.php b/lib/private/Repair/AssetCache.php
deleted file mode 100644
index 74eb9c51986..00000000000
--- a/lib/private/Repair/AssetCache.php
+++ /dev/null
@@ -1,43 +0,0 @@
-<?php
-/**
- * @copyright Copyright (c) 2016, ownCloud, Inc.
- *
- * @author Adam Williamson <awilliam@redhat.com>
- * @author Morris Jobke <hey@morrisjobke.de>
- * @author Roeland Jago Douma <roeland@famdouma.nl>
- * @author Thomas Müller <thomas.mueller@tmit.eu>
- *
- * @license AGPL-3.0
- *
- * This code is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License, version 3,
- * as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License, version 3,
- * along with this program.  If not, see <http://www.gnu.org/licenses/>
- *
- */
-
-namespace OC\Repair;
-
-use OCP\Migration\IOutput;
-use OCP\Migration\IRepairStep;
-
-class AssetCache implements IRepairStep {
-
-	public function getName() {
-		return 'Remove asset cache';
-	}
-
-	public function run(IOutput $output) {
-		$assetDir = \OC::$server->getConfig()->getSystemValue('assetdirectory', \OC::$SERVERROOT) . '/assets';
-		\OC_Helper::rmdirr($assetDir, false);
-		$output->info('Asset cache cleared.');
-	}
-}
-
diff --git a/lib/private/Repair/DropOldJobs.php b/lib/private/Repair/DropOldJobs.php
deleted file mode 100644
index 126df9e940f..00000000000
--- a/lib/private/Repair/DropOldJobs.php
+++ /dev/null
@@ -1,88 +0,0 @@
-<?php
-/**
- * @copyright Copyright (c) 2016, ownCloud, Inc.
- *
- * @author Arthur Schiwon <blizzz@arthur-schiwon.de>
- * @author Joas Schilling <coding@schilljs.com>
- * @author Thomas Müller <thomas.mueller@tmit.eu>
- *
- * @license AGPL-3.0
- *
- * This code is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License, version 3,
- * as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License, version 3,
- * along with this program.  If not, see <http://www.gnu.org/licenses/>
- *
- */
-
-namespace OC\Repair;
-
-use OCP\BackgroundJob\IJobList;
-use OCP\Migration\IOutput;
-use OCP\Migration\IRepairStep;
-
-class DropOldJobs implements IRepairStep {
-
-	/** @var IJobList */
-	protected $jobList;
-
-	/**
-	 * @param IJobList $jobList
-	 */
-	public function __construct(IJobList $jobList) {
-		$this->jobList = $jobList;
-	}
-
-	/**
-	 * Returns the step's name
-	 *
-	 * @return string
-	 */
-	public function getName() {
-		return 'Drop old background jobs';
-	}
-
-	/**
-	 * Run repair step.
-	 * Must throw exception on error.
-	 *
-	 * @throws \Exception in case of failure
-	 */
-	public function run(IOutput $output) {
-		$oldJobs = $this->oldJobs();
-		foreach($oldJobs as $job) {
-			if($this->jobList->has($job['class'], $job['arguments'])) {
-				$this->jobList->remove($job['class'], $job['arguments']);
-			}
-		}
-	}
-
-	/**
-	 * returns a list of old jobs as an associative array with keys 'class' and
-	 * 'arguments'.
-	 *
-	 * @return array
-	 */
-	public function oldJobs() {
-		return [
-			['class' => 'OC_Cache_FileGlobalGC', 'arguments' => null],
-			['class' => 'OC\Cache\FileGlobalGC', 'arguments' => null],
-			['class' => 'OCA\Files\BackgroundJob\DeleteOrphanedTagsJob', 'arguments' => null],
-
-			['class' => 'OCA\Files_sharing\Lib\DeleteOrphanedSharesJob', 'arguments' => null],
-			['class' => 'OCA\Files_sharing\ExpireSharesJob', 'arguments' => null],
-
-			['class' => 'OCA\user_ldap\lib\Jobs', 'arguments' => null],
-			['class' => '\OCA\User_LDAP\Jobs\CleanUp', 'arguments' => null],
-		];
-	}
-
-
-}
diff --git a/lib/private/Repair/DropOldTables.php b/lib/private/Repair/DropOldTables.php
deleted file mode 100644
index dfc3f757ea8..00000000000
--- a/lib/private/Repair/DropOldTables.php
+++ /dev/null
@@ -1,111 +0,0 @@
-<?php
-/**
- * @copyright Copyright (c) 2016, ownCloud, Inc.
- *
- * @author Florian Preinstorfer <nblock@archlinux.us>
- * @author Joas Schilling <coding@schilljs.com>
- * @author Morris Jobke <hey@morrisjobke.de>
- * @author Thomas Müller <thomas.mueller@tmit.eu>
- *
- * @license AGPL-3.0
- *
- * This code is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License, version 3,
- * as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License, version 3,
- * along with this program.  If not, see <http://www.gnu.org/licenses/>
- *
- */
-
-namespace OC\Repair;
-
-
-use OCP\IDBConnection;
-use OCP\Migration\IOutput;
-use OCP\Migration\IRepairStep;
-
-class DropOldTables implements IRepairStep {
-
-	/** @var IDBConnection */
-	protected $connection;
-
-	/**
-	 * @param IDBConnection $connection
-	 */
-	public function __construct(IDBConnection $connection) {
-		$this->connection = $connection;
-	}
-
-	/**
-	 * Returns the step's name
-	 *
-	 * @return string
-	 */
-	public function getName() {
-		return 'Drop old database tables';
-	}
-
-	/**
-	 * Run repair step.
-	 * Must throw exception on error.
-	 *
-	 * @throws \Exception in case of failure
-	 */
-	public function run(IOutput $output) {
-		$tables = $this->oldDatabaseTables();
-		$output->startProgress(count($tables));
-		foreach ($this->oldDatabaseTables() as $tableName) {
-			if ($this->connection->tableExists($tableName)){
-				$this->connection->dropTable($tableName);
-			}
-			$output->advance(1, "Drop old database table: $tableName");
-		}
-		$output->finishProgress();
-	}
-
-	/**
-	 * Returns a list of outdated tables which are not used anymore
-	 * @return array
-	 */
-	protected function oldDatabaseTables() {
-		return [
-			'calendar_calendars',
-			'calendar_objects',
-			'calendar_share_calendar',
-			'calendar_share_event',
-			'file_map',
-			'foldersize',
-			'fscache',
-			'gallery_sharing',
-			'locks',
-			'log',
-			'media_albums',
-			'media_artists',
-			'media_sessions',
-			'media_songs',
-			'media_users',
-			'permissions',
-			'pictures_images_cache',
-			'principalgroups',
-			'principals',
-			'queuedtasks',
-			'sharing',
-			'clndr_calendars',
-			'clndr_objects',
-			'clndr_share_event',
-			'clndr_share_calendar',
-			'clndr_repeat',
-			'contacts_addressbooks',
-			'contacts_cards',
-			'contacts_cards_properties',
-			'gallery_albums',
-			'gallery_photos'
-		];
-	}
-}
diff --git a/lib/private/Repair/FillETags.php b/lib/private/Repair/FillETags.php
deleted file mode 100644
index 2954c0eaa63..00000000000
--- a/lib/private/Repair/FillETags.php
+++ /dev/null
@@ -1,57 +0,0 @@
-<?php
-/**
- * @copyright Copyright (c) 2016, ownCloud, Inc.
- *
- * @author Joas Schilling <coding@schilljs.com>
- * @author Morris Jobke <hey@morrisjobke.de>
- * @author Thomas Müller <thomas.mueller@tmit.eu>
- *
- * @license AGPL-3.0
- *
- * This code is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License, version 3,
- * as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License, version 3,
- * along with this program.  If not, see <http://www.gnu.org/licenses/>
- *
- */
-
-namespace OC\Repair;
-
-use OCP\Migration\IOutput;
-use OCP\Migration\IRepairStep;
-
-class FillETags implements IRepairStep {
-
-	/** @var \OCP\IDBConnection */
-	protected $connection;
-
-	/**
-	 * @param \OCP\IDBConnection $connection
-	 */
-	public function __construct($connection) {
-		$this->connection = $connection;
-	}
-
-	public function getName() {
-		return 'Generate ETags for file where no ETag is present.';
-	}
-
-	public function run(IOutput $output) {
-		$qb = $this->connection->getQueryBuilder();
-		$qb->update('filecache')
-			->set('etag', $qb->expr()->literal('xxx'))
-			->where($qb->expr()->eq('etag', $qb->expr()->literal('')))
-			->orWhere($qb->expr()->isNull('etag'));
-
-		$result = $qb->execute();
-		$output->info("ETags have been fixed for $result files/folders.");
-	}
-}
-
diff --git a/lib/private/Repair/InnoDB.php b/lib/private/Repair/InnoDB.php
deleted file mode 100644
index 174cc334482..00000000000
--- a/lib/private/Repair/InnoDB.php
+++ /dev/null
@@ -1,70 +0,0 @@
-<?php
-/**
- * @copyright Copyright (c) 2016, ownCloud, Inc.
- *
- * @author Morris Jobke <hey@morrisjobke.de>
- * @author Robin Appelman <robin@icewind.nl>
- * @author Thomas Müller <thomas.mueller@tmit.eu>
- *
- * @license AGPL-3.0
- *
- * This code is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License, version 3,
- * as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License, version 3,
- * along with this program.  If not, see <http://www.gnu.org/licenses/>
- *
- */
-
-namespace OC\Repair;
-
-use Doctrine\DBAL\Platforms\MySqlPlatform;
-use OCP\Migration\IOutput;
-use OCP\Migration\IRepairStep;
-
-class InnoDB implements IRepairStep {
-
-	public function getName() {
-		return 'Repair MySQL database engine';
-	}
-
-	/**
-	 * Fix mime types
-	 */
-	public function run(IOutput $output) {
-		$connection = \OC::$server->getDatabaseConnection();
-		if (!$connection->getDatabasePlatform() instanceof MySqlPlatform) {
-			$output->info('Not a mysql database -> nothing to do');
-			return;
-		}
-
-		$tables = $this->getAllMyIsamTables($connection);
-		if (is_array($tables)) {
-			foreach ($tables as $table) {
-				$connection->exec("ALTER TABLE $table ENGINE=InnoDB;");
-				$output->info("Fixed $table");
-			}
-		}
-	}
-
-	/**
-	 * @param \Doctrine\DBAL\Connection $connection
-	 * @return string[]
-	 */
-	private function getAllMyIsamTables($connection) {
-		$dbName = \OC::$server->getConfig()->getSystemValue("dbname");
-		$result = $connection->fetchArray(
-			"SELECT table_name FROM information_schema.tables WHERE table_schema = ? AND engine = 'MyISAM' AND TABLE_NAME LIKE \"*PREFIX*%\"",
-			array($dbName)
-		);
-
-		return $result;
-	}
-}
-
diff --git a/lib/private/Repair/Preview.php b/lib/private/Repair/Preview.php
deleted file mode 100644
index 8391c3bf726..00000000000
--- a/lib/private/Repair/Preview.php
+++ /dev/null
@@ -1,48 +0,0 @@
-<?php
-/**
- * @copyright Copyright (c) 2016, ownCloud, Inc.
- *
- * @author Georg Ehrke <georg@owncloud.com>
- * @author Thomas Müller <thomas.mueller@tmit.eu>
- *
- * @license AGPL-3.0
- *
- * This code is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License, version 3,
- * as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License, version 3,
- * along with this program.  If not, see <http://www.gnu.org/licenses/>
- *
- */
-namespace OC\Repair;
-
-use OC\Files\View;
-use OCP\Migration\IOutput;
-use OCP\Migration\IRepairStep;
-
-class Preview implements IRepairStep {
-
-	public function getName() {
-		return 'Cleaning-up broken previews';
-	}
-
-	public function run(IOutput $out) {
-		$view = new View('/');
-		$children = $view->getDirectoryContent('/');
-
-		foreach ($children as $child) {
-			if ($view->is_dir($child->getPath())) {
-				$thumbnailsFolder = $child->getPath() . '/thumbnails';
-				if ($view->is_dir($thumbnailsFolder)) {
-					$view->rmdir($thumbnailsFolder);
-				}
-			}
-		}
-	}
-}
diff --git a/lib/private/Repair/RemoveGetETagEntries.php b/lib/private/Repair/RemoveGetETagEntries.php
deleted file mode 100644
index d701a8f26de..00000000000
--- a/lib/private/Repair/RemoveGetETagEntries.php
+++ /dev/null
@@ -1,58 +0,0 @@
-<?php
-/**
- * @copyright Copyright (c) 2016, ownCloud, Inc.
- *
- * @author Morris Jobke <hey@morrisjobke.de>
- * @author Thomas Müller <thomas.mueller@tmit.eu>
- *
- * @license AGPL-3.0
- *
- * This code is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License, version 3,
- * as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License, version 3,
- * along with this program.  If not, see <http://www.gnu.org/licenses/>
- *
- */
-
-namespace OC\Repair;
-
-use OCP\IDBConnection;
-use OCP\Migration\IOutput;
-use OCP\Migration\IRepairStep;
-
-class RemoveGetETagEntries implements IRepairStep {
-
-	/**
-	 * @var IDBConnection
-	 */
-	protected $connection;
-
-	/**
-	 * @param IDBConnection $connection
-	 */
-	public function __construct(IDBConnection $connection) {
-		$this->connection = $connection;
-	}
-
-	public function getName() {
-		return 'Remove getetag entries in properties table';
-	}
-
-	/**
-	 * Removes all entries with the key "{DAV:}getetag" from the table properties
-	 */
-	public function run(IOutput $out) {
-		$sql = 'DELETE FROM `*PREFIX*properties`'
-			. ' WHERE `propertyname` = ?';
-		$deletedRows = $this->connection->executeUpdate($sql, ['{DAV:}getetag']);
-
-		$out->info('Removed ' . $deletedRows . ' unneeded "{DAV:}getetag" entries from properties table.');
-	}
-}
diff --git a/lib/private/Repair/RemoveOldShares.php b/lib/private/Repair/RemoveOldShares.php
deleted file mode 100644
index 32a17189fbf..00000000000
--- a/lib/private/Repair/RemoveOldShares.php
+++ /dev/null
@@ -1,104 +0,0 @@
-<?php
-/**
- * @copyright Copyright (c) 2016, ownCloud, Inc.
- *
- * @author Roeland Jago Douma <roeland@famdouma.nl>
- *
- * @license AGPL-3.0
- *
- * This code is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License, version 3,
- * as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License, version 3,
- * along with this program.  If not, see <http://www.gnu.org/licenses/>
- *
- */
-namespace OC\Repair;
-
-use OCP\IDBConnection;
-use OCP\Migration\IOutput;
-use OCP\Migration\IRepairStep;
-
-/**
- * Class RemoveOldShares
- *
- * @package OC\Repair
- */
-class RemoveOldShares implements IRepairStep {
-
-	/** @var IDBConnection */
-	protected $connection;
-
-	/**
-	 * RemoveOldCalendarShares constructor.
-	 *
-	 * @param IDBConnection $db
-	 */
-	public function __construct(IDBConnection $connection) {
-		$this->connection = $connection;
-	}
-
-	/**
-	 * @return string
-	 */
-	public function getName() {
-		return 'Remove old (< 9.0) calendar/contact shares';
-	}
-
-	/**
-	 * @param IOutput $output
-	 */
-	public function run(IOutput $output) {
-		$output->startProgress(4);
-
-		$this->removeCalendarShares($output);
-		$this->removeContactShares($output);
-
-		$output->finishProgress();
-	}
-
-	/**
-	 * @param IOutput $output
-	 */
-	private function removeCalendarShares(IOutput $output) {
-		$qb = $this->connection->getQueryBuilder();
-		$qb->delete('share')
-			->where($qb->expr()->eq('item_type', $qb->createNamedParameter('calendar')));
-		$qb->execute();
-
-		$output->advance();
-
-		$qb = $this->connection->getQueryBuilder();
-		$qb->delete('share')
-			->where($qb->expr()->eq('item_type', $qb->createNamedParameter('event')));
-		$qb->execute();
-
-		$output->advance();
-	}
-
-	/**
-	 * @param IOutput $output
-	 */
-	private function removeContactShares(IOutput $output) {
-		$qb = $this->connection->getQueryBuilder();
-		$qb->delete('share')
-			->where($qb->expr()->eq('item_type', $qb->createNamedParameter('contact')));
-		$qb->execute();
-
-		$output->advance();
-
-		$qb = $this->connection->getQueryBuilder();
-		$qb->delete('share')
-			->where($qb->expr()->eq('item_type', $qb->createNamedParameter('addressbook')));
-		$qb->execute();
-
-		$output->advance();
-	}
-}
-
diff --git a/lib/private/Repair/RepairInvalidShares.php b/lib/private/Repair/RepairInvalidShares.php
index 04624c910dd..eba66e295c4 100644
--- a/lib/private/Repair/RepairInvalidShares.php
+++ b/lib/private/Repair/RepairInvalidShares.php
@@ -56,43 +56,6 @@ class RepairInvalidShares implements IRepairStep {
 	}
 
 	/**
-	 * Past bugs would make it possible to set an expiration date on user shares even
-	 * though it is not supported. This functions removes the expiration date from such entries.
-	 */
-	private function removeExpirationDateFromNonLinkShares(IOutput $out) {
-		$builder = $this->connection->getQueryBuilder();
-		$builder
-			->update('share')
-			->set('expiration', 'null')
-			->where($builder->expr()->isNotNull('expiration'))
-			->andWhere($builder->expr()->neq('share_type', $builder->expr()->literal(\OC\Share\Constants::SHARE_TYPE_LINK)));
-
-		$updatedEntries = $builder->execute();
-		if ($updatedEntries > 0) {
-			$out->info('Removed invalid expiration date from ' . $updatedEntries . ' shares');
-		}
-	}
-
-	/**
-	 * In the past link shares with public upload enabled were missing the delete permission.
-	 */
-	private function addShareLinkDeletePermission(IOutput $out) {
-		$oldPerms = \OCP\Constants::PERMISSION_READ | \OCP\Constants::PERMISSION_CREATE | \OCP\Constants::PERMISSION_UPDATE;
-		$newPerms = \OCP\Constants::PERMISSION_READ | \OCP\Constants::PERMISSION_CREATE | \OCP\Constants::PERMISSION_UPDATE | \OCP\Constants::PERMISSION_DELETE;
-		$builder = $this->connection->getQueryBuilder();
-		$builder
-			->update('share')
-			->set('permissions', $builder->expr()->literal($newPerms))
-			->where($builder->expr()->eq('share_type', $builder->expr()->literal(\OC\Share\Constants::SHARE_TYPE_LINK)))
-			->andWhere($builder->expr()->eq('permissions', $builder->expr()->literal($oldPerms)));
-
-		$updatedEntries = $builder->execute();
-		if ($updatedEntries > 0) {
-			$out->info('Fixed link share permissions for ' . $updatedEntries . ' shares');
-		}
-	}
-
-	/**
 	 * Adjust file share permissions
 	 */
 	private function adjustFileSharePermissions(IOutput $out) {
@@ -150,14 +113,6 @@ class RepairInvalidShares implements IRepairStep {
 
 	public function run(IOutput $out) {
 		$ocVersionFromBeforeUpdate = $this->config->getSystemValue('version', '0.0.0');
-		if (version_compare($ocVersionFromBeforeUpdate, '8.2.0.7', '<')) {
-			// this situation was only possible before 8.2
-			$this->removeExpirationDateFromNonLinkShares($out);
-		}
-		if (version_compare($ocVersionFromBeforeUpdate, '9.1.0.9', '<')) {
-			// this situation was only possible before 9.1
-			$this->addShareLinkDeletePermission($out);
-		}
 		if (version_compare($ocVersionFromBeforeUpdate, '12.0.0.11', '<')) {
 			$this->adjustFileSharePermissions($out);
 		}
diff --git a/lib/private/Repair/RepairMimeTypes.php b/lib/private/Repair/RepairMimeTypes.php
index fbf446a681c..534b5ce2c28 100644
--- a/lib/private/Repair/RepairMimeTypes.php
+++ b/lib/private/Repair/RepairMimeTypes.php
@@ -78,24 +78,6 @@ class RepairMimeTypes implements IRepairStep {
 		');
 	}
 
-	private static function updateWrongStmt() {
-		return \OC_DB::prepare('
-			UPDATE `*PREFIX*filecache`
-			SET `mimetype` = (
-				SELECT `id`
-				FROM `*PREFIX*mimetypes`
-				WHERE `mimetype` = ?
-			) WHERE `mimetype` = ?
-		');
-	}
-
-	private static function deleteStmt() {
-		return \OC_DB::prepare('
-			DELETE FROM `*PREFIX*mimetypes`
-			WHERE `id` = ?
-		');
-	}
-
 	private static function updateByNameStmt() {
 		return \OC_DB::prepare('
 			UPDATE `*PREFIX*filecache`
@@ -104,34 +86,6 @@ class RepairMimeTypes implements IRepairStep {
 		');
 	}
 
-	private function repairMimetypes($wrongMimetypes) {
-		foreach ($wrongMimetypes as $wrong => $correct) {
-			// do we need to remove a wrong mimetype?
-			$result = \OC_DB::executeAudited(self::getIdStmt(), array($wrong));
-			$wrongId = $result->fetchOne();
-
-			if ($wrongId !== false) {
-				// do we need to insert the correct mimetype?
-				$result = \OC_DB::executeAudited(self::existsStmt(), array($correct));
-				$exists = $result->fetchOne();
-
-				if (!is_null($correct)) {
-					if (!$exists) {
-						// insert mimetype
-						\OC_DB::executeAudited(self::insertStmt(), array($correct));
-					}
-
-					// change wrong mimetype to correct mimetype in filecache
-					\OC_DB::executeAudited(self::updateWrongStmt(), array($correct, $wrongId));
-				}
-
-				// delete wrong mimetype
-				\OC_DB::executeAudited(self::deleteStmt(), array($wrongId));
-
-			}
-		}
-	}
-
 	private function updateMimetypes($updatedMimetypes) {
 		if (empty($this->folderMimeTypeId)) {
 			$result = \OC_DB::executeAudited(self::getIdStmt(), array('httpd/unix-directory'));
@@ -156,158 +110,6 @@ class RepairMimeTypes implements IRepairStep {
 		}
 	}
 
-	private function fixOfficeMimeTypes() {
-		// update wrong mimetypes
-		$wrongMimetypes = array(
-			'application/mspowerpoint' => 'application/vnd.ms-powerpoint',
-			'application/msexcel' => 'application/vnd.ms-excel',
-		);
-
-		self::repairMimetypes($wrongMimetypes);
-
-		$updatedMimetypes = array(
-			'docx' => 'application/vnd.openxmlformats-officedocument.wordprocessingml.document',
-			'xlsx' => 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet',
-			'pptx' => 'application/vnd.openxmlformats-officedocument.presentationml.presentation',
-		);
-
-
-		// separate doc from docx etc
-		self::updateMimetypes($updatedMimetypes);
-
-	}
-
-	private function fixApkMimeType() {
-		$updatedMimetypes = array(
-			'apk' => 'application/vnd.android.package-archive',
-		);
-
-		self::updateMimetypes($updatedMimetypes);
-	}
-
-	private function fixFontsMimeTypes() {
-		// update wrong mimetypes
-		$wrongMimetypes = array(
-			'font' => null,
-			'font/opentype' => 'application/font-sfnt',
-			'application/x-font-ttf' => 'application/font-sfnt',
-		);
-
-		self::repairMimetypes($wrongMimetypes);
-
-		$updatedMimetypes = array(
-			'ttf' => 'application/font-sfnt',
-			'otf' => 'application/font-sfnt',
-			'pfb' => 'application/x-font',
-		);
-
-		self::updateMimetypes($updatedMimetypes);
-	}
-
-	private function fixPostscriptMimeType() {
-		$updatedMimetypes = array(
-			'eps' => 'application/postscript',
-			'ps' => 'application/postscript',
-		);
-
-		self::updateMimetypes($updatedMimetypes);
-	}
-
-	private function introduceRawMimeType() {
-		$updatedMimetypes = array(
-			'arw' => 'image/x-dcraw',
-			'cr2' => 'image/x-dcraw',
-			'dcr' => 'image/x-dcraw',
-			'dng' => 'image/x-dcraw',
-			'erf' => 'image/x-dcraw',
-			'iiq' => 'image/x-dcraw',
-			'k25' => 'image/x-dcraw',
-			'kdc' => 'image/x-dcraw',
-			'mef' => 'image/x-dcraw',
-			'nef' => 'image/x-dcraw',
-			'orf' => 'image/x-dcraw',
-			'pef' => 'image/x-dcraw',
-			'raf' => 'image/x-dcraw',
-			'rw2' => 'image/x-dcraw',
-			'srf' => 'image/x-dcraw',
-			'sr2' => 'image/x-dcraw',
-			'xrf' => 'image/x-dcraw',
-		);
-
-		self::updateMimetypes($updatedMimetypes);
-	}
-
-	private function introduce3dImagesMimeType() {
-		$updatedMimetypes = array(
-			'jps' => 'image/jpeg',
-			'mpo' => 'image/jpeg',
-		);
-
-		self::updateMimetypes($updatedMimetypes);
-	}
-
-	private function introduceConfMimeType() {
-		$updatedMimetypes = array(
-			'conf' => 'text/plain',
-			'cnf' => 'text/plain',
-		);
-
-		self::updateMimetypes($updatedMimetypes);
-	}
-
-	private function introduceYamlMimeType() {
-		$updatedMimetypes = array(
-			'yaml' => 'application/yaml',
-			'yml' => 'application/yaml',
-		);
-
-		self::updateMimetypes($updatedMimetypes);
-	}
-
-	private function introduceJavaMimeType() {
-		$updatedMimetypes = array(
-			'class' => 'application/java',
-			'java' => 'text/x-java-source',
-		);
-
-		self::updateMimetypes($updatedMimetypes);
-	}
-
-	private function introduceHppMimeType() {
-		$updatedMimetypes = array(
-			'hpp' => 'text/x-h',
-		);
-
-		self::updateMimetypes($updatedMimetypes);
-	}
-
-	private function introduceRssMimeType() {
-		$updatedMimetypes = array(
-			'rss' => 'application/rss+xml',
-		);
-
-		self::updateMimetypes($updatedMimetypes);
-	}
-
-	private function introduceRtfMimeType() {
-		$updatedMimetypes = array(
-			'rtf' => 'text/rtf',
-		);
-
-		self::updateMimetypes($updatedMimetypes);
-	}
-
-	private function introduceRichDocumentsMimeTypes() {
-		$updatedMimetypes = array(
-			'lwp' => 'application/vnd.lotus-wordpro',
-			'one' => 'application/msonenote',
-			'vsd' => 'application/vnd.visio',
-			'wpd' => 'application/vnd.wordperfect',
-		);
-
-		self::updateMimetypes($updatedMimetypes);
-	}
-
 	private function introduceWindowsProgramTypes() {
 		$updatedMimetypes = array(
 			'htaccess' => 'text/plain',
@@ -328,66 +130,6 @@ class RepairMimeTypes implements IRepairStep {
 		// NOTE TO DEVELOPERS: when adding new mime types, please make sure to
 		// add a version comparison to avoid doing it every time
 
-		// only update mime types if necessary as it can be expensive
-		if (version_compare($ocVersionFromBeforeUpdate, '8.2.0', '<')) {
-			if ($this->fixOfficeMimeTypes()) {
-				$out->info('Fixed office mime types');
-			}
-
-			if ($this->fixApkMimeType()) {
-				$out->info('Fixed APK mime type');
-			}
-
-			if ($this->fixFontsMimeTypes()) {
-				$out->info('Fixed fonts mime types');
-			}
-
-			if ($this->fixPostscriptMimeType()) {
-				$out->info('Fixed Postscript mime types');
-			}
-
-			if ($this->introduceRawMimeType()) {
-				$out->info('Fixed Raw mime types');
-			}
-
-			if ($this->introduce3dImagesMimeType()) {
-				$out->info('Fixed 3D images mime types');
-			}
-
-			if ($this->introduceConfMimeType()) {
-				$out->info('Fixed Conf/cnf mime types');
-			}
-
-			if ($this->introduceYamlMimeType()) {
-				$out->info('Fixed Yaml/Yml mime types');
-			}
-		}
-
-		// Mimetype updates from #19272
-		if (version_compare($ocVersionFromBeforeUpdate, '8.2.0.8', '<')) {
-			if ($this->introduceJavaMimeType()) {
-				$out->info('Fixed java/class mime types');
-			}
-
-			if ($this->introduceHppMimeType()) {
-				$out->info('Fixed hpp mime type');
-			}
-
-			if ($this->introduceRssMimeType()) {
-				$out->info('Fixed rss mime type');
-			}
-
-			if ($this->introduceRtfMimeType()) {
-				$out->info('Fixed rtf mime type');
-			}
-		}
-
-		if (version_compare($ocVersionFromBeforeUpdate, '9.0.0.10', '<')) {
-			if ($this->introduceRichDocumentsMimeTypes()) {
-				$out->info('Fixed richdocuments additional office mime types');
-			}
-		}
-
 		if (version_compare($ocVersionFromBeforeUpdate, '12.0.0.13', '<') && $this->introduceWindowsProgramTypes()) {
 			$out->info('Fixed windows program mime types');
 		}
diff --git a/lib/private/Repair/RepairUnmergedShares.php b/lib/private/Repair/RepairUnmergedShares.php
deleted file mode 100644
index 56d935c74f5..00000000000
--- a/lib/private/Repair/RepairUnmergedShares.php
+++ /dev/null
@@ -1,357 +0,0 @@
-<?php
-/**
- * @author Vincent Petry <pvince81@owncloud.com>
- *
- * @copyright Copyright (c) 2016, ownCloud, Inc.
- * @license AGPL-3.0
- *
- * This code is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License, version 3,
- * as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License, version 3,
- * along with this program.  If not, see <http://www.gnu.org/licenses/>
- *
- */
-
-namespace OC\Repair;
-
-use OCP\Migration\IOutput;
-use OCP\Migration\IRepairStep;
-use OC\Share\Constants;
-use OCP\DB\QueryBuilder\IQueryBuilder;
-use OCP\IConfig;
-use OCP\IDBConnection;
-use OCP\IUserManager;
-use OCP\IUser;
-use OCP\IGroupManager;
-use OC\Share20\DefaultShareProvider;
-
-/**
- * Repairs shares for which the received folder was not properly deduplicated.
- *
- * An unmerged share can for example happen when sharing a folder with the same
- * user through multiple ways, like several groups and also directly, additionally
- * to group shares. Since 9.0.0 these would create duplicate entries "folder (2)",
- * one for every share. This repair step rearranges them so they only appear as a single
- * folder.
- */
-class RepairUnmergedShares implements IRepairStep {
-
-	/** @var \OCP\IConfig */
-	protected $config;
-
-	/** @var \OCP\IDBConnection */
-	protected $connection;
-
-	/** @var IUserManager */
-	protected $userManager;
-
-	/** @var IGroupManager */
-	protected $groupManager;
-
-	/** @var IQueryBuilder */
-	private $queryGetSharesWithUsers;
-
-	/** @var IQueryBuilder */
-	private $queryUpdateSharePermissionsAndTarget;
-
-	/** @var IQueryBuilder */
-	private $queryUpdateShareInBatch;
-
-	/**
-	 * @param \OCP\IConfig $config
-	 * @param \OCP\IDBConnection $connection
-	 */
-	public function __construct(
-		IConfig $config,
-		IDBConnection $connection,
-		IUserManager $userManager,
-		IGroupManager $groupManager
-	) {
-		$this->connection = $connection;
-		$this->config = $config;
-		$this->userManager = $userManager;
-		$this->groupManager = $groupManager;
-	}
-
-	public function getName() {
-		return 'Repair unmerged shares';
-	}
-
-	/**
-	 * Builds prepared queries for reuse
-	 */
-	private function buildPreparedQueries() {
-		/**
-		 * Retrieve shares for a given user/group and share type
-		 */
-		$query = $this->connection->getQueryBuilder();
-		$query
-			->select('item_source', 'id', 'file_target', 'permissions', 'parent', 'share_type', 'stime')
-			->from('share')
-			->where($query->expr()->eq('share_type', $query->createParameter('shareType')))
-			->andWhere($query->expr()->in('share_with', $query->createParameter('shareWiths')))
-			->andWhere($query->expr()->in('item_type', $query->createParameter('itemTypes')))
-			->orderBy('item_source', 'ASC')
-			->addOrderBy('stime', 'ASC');
-
-		$this->queryGetSharesWithUsers = $query;
-
-		/**
-		 * Updates the file_target to the given value for all given share ids.
-		 *
-		 * This updates several shares in bulk which is faster than individually.
-		 */
-		$query = $this->connection->getQueryBuilder();
-		$query->update('share')
-			->set('file_target', $query->createParameter('file_target'))
-			->where($query->expr()->in('id', $query->createParameter('ids')));
-
-		$this->queryUpdateShareInBatch = $query;
-
-		/**
-		 * Updates the share permissions and target path of a single share.
-		 */
-		$query = $this->connection->getQueryBuilder();
-		$query->update('share')
-			->set('permissions', $query->createParameter('permissions'))
-			->set('file_target', $query->createParameter('file_target'))
-			->where($query->expr()->eq('id', $query->createParameter('shareid')));
-
-		$this->queryUpdateSharePermissionsAndTarget = $query;
-
-	}
-
-	private function getSharesWithUser($shareType, $shareWiths) {
-		$groupedShares = [];
-
-		$query = $this->queryGetSharesWithUsers;
-		$query->setParameter('shareWiths', $shareWiths, IQueryBuilder::PARAM_STR_ARRAY);
-		$query->setParameter('shareType', $shareType);
-		$query->setParameter('itemTypes', ['file', 'folder'], IQueryBuilder::PARAM_STR_ARRAY);
-
-		$shares = $query->execute()->fetchAll();
-
-		// group by item_source
-		foreach ($shares as $share) {
-			if (!isset($groupedShares[$share['item_source']])) {
-				$groupedShares[$share['item_source']] = [];
-			}
-			$groupedShares[$share['item_source']][] = $share;
-		}
-		return $groupedShares;
-	}
-
-	private function isPotentialDuplicateName($name) {
-		return (preg_match('/\(\d+\)(\.[^\.]+)?$/', $name) === 1);
-	}
-
-	/**
-	 * Decide on the best target name based on all group shares and subshares,
-	 * goal is to increase the likeliness that the chosen name matches what
-	 * the user is expecting.
-	 *
-	 * For this, we discard the entries with parenthesis "(2)".
-	 * In case the user also renamed the duplicates to a legitimate name, this logic
-	 * will still pick the most recent one as it's the one the user is most likely to
-	 * remember renaming.
-	 *
-	 * If no suitable subshare is found, use the least recent group share instead.
-	 *
-	 * @param array $groupShares group share entries
-	 * @param array $subShares sub share entries
-	 *
-	 * @return string chosen target name
-	 */
-	private function findBestTargetName($groupShares, $subShares) {
-		$pickedShare = null;
-		// sort by stime, this also properly sorts the direct user share if any
-		@usort($subShares, function($a, $b) {
-			return ((int)$a['stime'] - (int)$b['stime']);
-		});
-
-		foreach ($subShares as $subShare) {
-			// skip entries that have parenthesis with numbers
-			if ($this->isPotentialDuplicateName($subShare['file_target'])) {
-				continue;
-			}
-			// pick any share found that would match, the last being the most recent
-			$pickedShare = $subShare;
-		}
-
-		// no suitable subshare found
-		if ($pickedShare === null) {
-			// use least recent group share target instead
-			$pickedShare = $groupShares[0];
-		}
-
-		return $pickedShare['file_target'];
-	}
-
-	/**
-	 * Fix the given received share represented by the set of group shares
-	 * and matching sub shares
-	 *
-	 * @param array $groupShares group share entries
-	 * @param array $subShares sub share entries
-	 *
-	 * @return boolean false if the share was not repaired, true if it was
-	 */
-	private function fixThisShare($groupShares, $subShares) {
-		if (empty($subShares)) {
-			return false;
-		}
-
-		$groupSharesById = [];
-		foreach ($groupShares as $groupShare) {
-			$groupSharesById[$groupShare['id']] = $groupShare;
-		}
-
-		if ($this->isThisShareValid($groupSharesById, $subShares)) {
-			return false;
-		}
-
-		$targetPath = $this->findBestTargetName($groupShares, $subShares);
-
-		// check whether the user opted out completely of all subshares
-		$optedOut = true;
-		foreach ($subShares as $subShare) {
-			if ((int)$subShare['permissions'] !== 0) {
-				$optedOut = false;
-				break;
-			}
-		}
-
-		$shareIds = [];
-		foreach ($subShares as $subShare) {
-			// only if the user deleted some subshares but not all, adjust the permissions of that subshare
-			if (!$optedOut && (int)$subShare['permissions'] === 0 && (int)$subShare['share_type'] === DefaultShareProvider::SHARE_TYPE_USERGROUP) {
-				// set permissions from parent group share
-				$permissions = $groupSharesById[$subShare['parent']]['permissions'];
-
-				// fix permissions and target directly
-				$query = $this->queryUpdateSharePermissionsAndTarget;
-				$query->setParameter('shareid', $subShare['id']);
-				$query->setParameter('file_target', $targetPath);
-				$query->setParameter('permissions', $permissions);
-				$query->execute();
-			} else {
-				// gather share ids for bulk target update
-				if ($subShare['file_target'] !== $targetPath) {
-					$shareIds[] = (int)$subShare['id'];
-				}
-			}
-		}
-
-		if (!empty($shareIds)) {
-			$query = $this->queryUpdateShareInBatch;
-			$query->setParameter('ids', $shareIds, IQueryBuilder::PARAM_INT_ARRAY);
-			$query->setParameter('file_target', $targetPath);
-			$query->execute();
-		}
-
-		return true;
-	}
-
-	/**
-	 * Checks whether the number of group shares is balanced with the child subshares.
-	 * If all group shares have exactly one subshare, and the target of every subshare
-	 * is the same, then the share is valid.
-	 * If however there is a group share entry that has no matching subshare, it means
-	 * we're in the bogus situation and the whole share must be repaired
-	 *
-	 * @param array $groupSharesById
-	 * @param array $subShares
-	 *
-	 * @return true if the share is valid, false if it needs repair
-	 */
-	private function isThisShareValid($groupSharesById, $subShares) {
-		$foundTargets = [];
-
-		// every group share needs to have exactly one matching subshare
-		foreach ($subShares as $subShare) {
-			$foundTargets[$subShare['file_target']] = true;
-			if (count($foundTargets) > 1) {
-				// not all the same target path value => invalid
-				return false;
-			}
-			if (isset($groupSharesById[$subShare['parent']])) {
-				// remove it from the list as we found it
-				unset($groupSharesById[$subShare['parent']]);
-			}
-		}
-
-		// if we found one subshare per group entry, the set will be empty.
-		// If not empty, it means that one of the group shares did not have
-		// a matching subshare entry.
-		return empty($groupSharesById);
-	}
-
-	/**
-	 * Detect unmerged received shares and merge them properly
-	 */
-	private function fixUnmergedShares(IOutput $out, IUser $user) {
-		$groups = $this->groupManager->getUserGroupIds($user);
-		if (empty($groups)) {
-			// user is in no groups, so can't have received group shares
-			return;
-		}
-
-		// get all subshares grouped by item source
-		$subSharesByItemSource = $this->getSharesWithUser(DefaultShareProvider::SHARE_TYPE_USERGROUP, [$user->getUID()]);
-
-		// because sometimes one wants to give the user more permissions than the group share
-		$userSharesByItemSource = $this->getSharesWithUser(Constants::SHARE_TYPE_USER, [$user->getUID()]);
-
-		if (empty($subSharesByItemSource) && empty($userSharesByItemSource)) {
-			// nothing to repair for this user, no need to do extra queries
-			return;
-		}
-
-		$groupSharesByItemSource = $this->getSharesWithUser(Constants::SHARE_TYPE_GROUP, $groups);
-		if (empty($groupSharesByItemSource) && empty($userSharesByItemSource)) {
-			// nothing to repair for this user
-			return;
-		}
-
-		foreach ($groupSharesByItemSource as $itemSource => $groupShares) {
-			$subShares = [];
-			if (isset($subSharesByItemSource[$itemSource])) {
-				$subShares = $subSharesByItemSource[$itemSource];
-			}
-
-			if (isset($userSharesByItemSource[$itemSource])) {
-				// add it to the subshares to get a similar treatment
-				$subShares = array_merge($subShares, $userSharesByItemSource[$itemSource]);
-			}
-
-			$this->fixThisShare($groupShares, $subShares);
-		}
-	}
-
-	public function run(IOutput $output) {
-		$ocVersionFromBeforeUpdate = $this->config->getSystemValue('version', '0.0.0');
-		if (version_compare($ocVersionFromBeforeUpdate, '9.1.0.16', '<')) {
-			// this situation was only possible between 9.0.0 and 9.0.3 included
-
-			$function = function(IUser $user) use ($output) {
-				$this->fixUnmergedShares($output, $user);
-				$output->advance();
-			};
-
-			$this->buildPreparedQueries();
-
-			$output->startProgress($this->userManager->countUsers());
-
-			$this->userManager->callForAllUsers($function);
-
-			$output->finishProgress();
-		}
-	}
-}
diff --git a/lib/private/Repair/SearchLuceneTables.php b/lib/private/Repair/SearchLuceneTables.php
deleted file mode 100644
index 0a06371ce90..00000000000
--- a/lib/private/Repair/SearchLuceneTables.php
+++ /dev/null
@@ -1,80 +0,0 @@
-<?php
-/**
- * @copyright Copyright (c) 2016, ownCloud, Inc.
- *
- * @author Jörn Friedrich Dreyer <jfd@butonic.de>
- * @author Morris Jobke <hey@morrisjobke.de>
- * @author Thomas Müller <thomas.mueller@tmit.eu>
- *
- * @license AGPL-3.0
- *
- * This code is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License, version 3,
- * as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License, version 3,
- * along with this program.  If not, see <http://www.gnu.org/licenses/>
- *
- */
-
-namespace OC\Repair;
-
-use OCP\Migration\IOutput;
-use OCP\Migration\IRepairStep;
-
-class SearchLuceneTables implements IRepairStep {
-
-	public function getName() {
-		return 'Repair duplicate entries in oc_lucene_status';
-	}
-
-	/**
-	 * Fix duplicate entries in oc_lucene_status
-	 *
-	 * search_lucene prior to v0.5.0 did not have a primary key on the lucene_status table. Newer versions do, which
-	 * causes the migration check to fail because it tries to insert duplicate rows into the new schema.
-	 *
-	 * FIXME Currently, apps don't have a way of repairing anything before the migration check:
-	 * @link https://github.com/owncloud/core/issues/10980
-	 *
-	 * As a result this repair step needs to live in the core repo, although it belongs into search_lucene:
-	 * @link https://github.com/owncloud/core/issues/10205#issuecomment-54957557
-	 *
-	 * It will completely remove any rows that make a file id have more than one status:
-	 *  fileid | status                       fileid | status
-	 * --------+--------     will become     --------+--------
-	 *     2   |   E                             3   |   E
-	 *     2   |   I
-	 *     3   |   E
-	 *
-	 * search_lucene will then reindex the fileids without a status when the next indexing job is executed
-	 */
-	public function run(IOutput $out) {
-		$connection = \OC::$server->getDatabaseConnection();
-		if ($connection->tableExists('lucene_status')) {
-			$out->info('removing duplicate entries from lucene_status');
-
-			$query = $connection->prepare('
-				DELETE FROM `*PREFIX*lucene_status`
-				WHERE `fileid` IN (
-					SELECT `fileid`
-					FROM (
-						SELECT `fileid`
-						FROM `*PREFIX*lucene_status`
-						GROUP BY `fileid`
-						HAVING count(`fileid`) > 1
-					) AS `mysqlerr1093hack`
-				)');
-			$query->execute();
-		} else {
-			$out->info('lucene_status table does not exist -> nothing to do');
-		}
-	}
-
-}
-
diff --git a/lib/private/Repair/SharePropagation.php b/lib/private/Repair/SharePropagation.php
deleted file mode 100644
index c0cca3bd1ad..00000000000
--- a/lib/private/Repair/SharePropagation.php
+++ /dev/null
@@ -1,56 +0,0 @@
-<?php
-/**
- * @copyright Copyright (c) 2016, ownCloud, Inc.
- *
- * @author Robin Appelman <robin@icewind.nl>
- * @author Thomas Müller <thomas.mueller@tmit.eu>
- *
- * @license AGPL-3.0
- *
- * This code is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License, version 3,
- * as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License, version 3,
- * along with this program.  If not, see <http://www.gnu.org/licenses/>
- *
- */
-namespace OC\Repair;
-
-use OCP\IConfig;
-use OCP\Migration\IOutput;
-use OCP\Migration\IRepairStep;
-
-class SharePropagation implements IRepairStep {
-
-	/** @var  IConfig */
-	private $config;
-
-	/**
-	 * SharePropagation constructor.
-	 *
-	 * @param IConfig $config
-	 */
-	public function __construct(IConfig $config) {
-		$this->config = $config;
-	}
-
-	public function getName() {
-		return 'Remove old share propagation app entries';
-	}
-
-	public function run(IOutput $out ) {
-		$keys = $this->config->getAppKeys('files_sharing');
-
-		foreach ($keys as $key) {
-			if (is_numeric($key)) {
-				$this->config->deleteAppValue('files_sharing', $key);
-			}
-		}
-	}
-}
diff --git a/lib/private/Repair/UpdateOutdatedOcsIds.php b/lib/private/Repair/UpdateOutdatedOcsIds.php
deleted file mode 100644
index 6f4f2447e94..00000000000
--- a/lib/private/Repair/UpdateOutdatedOcsIds.php
+++ /dev/null
@@ -1,106 +0,0 @@
-<?php
-/**
- * @copyright Copyright (c) 2016, ownCloud, Inc.
- *
- * @author Lukas Reschke <lukas@statuscode.ch>
- * @author Thomas Müller <thomas.mueller@tmit.eu>
- *
- * @license AGPL-3.0
- *
- * This code is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License, version 3,
- * as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License, version 3,
- * along with this program.  If not, see <http://www.gnu.org/licenses/>
- *
- */
-
-namespace OC\Repair;
-
-use OCP\IConfig;
-use OCP\Migration\IOutput;
-use OCP\Migration\IRepairStep;
-
-/**
- * Class UpdateOutdatedOcsIds is used to update invalid outdated OCS IDs, this is
- * for example the case when an application has had another OCS ID in the past such
- * as for contacts and calendar when apps.owncloud.com migrated to a unified identifier
- * for multiple versions.
- *
- * @package OC\Repair
- */
-class UpdateOutdatedOcsIds implements IRepairStep {
-	/** @var IConfig */
-	private $config;
-
-	/**
-	 * @param IConfig $config
-	 */
-	public function __construct(IConfig $config) {
-		$this->config = $config;
-	}
-
-	/**
-	 * {@inheritdoc}
-	 */
-	public function getName() {
-		return 'Repair outdated OCS IDs';
-	}
-
-	/**
-	 * @param string $appName
-	 * @param string $oldId
-	 * @param string $newId
-	 * @return bool True if updated, false otherwise
-	 */
-	public function fixOcsId($appName, $oldId, $newId) {
-		$existingId = $this->config->getAppValue($appName, 'ocsid');
-
-		if($existingId === $oldId) {
-			$this->config->setAppValue($appName, 'ocsid', $newId);
-			return true;
-		}
-
-		return false;
-	}
-
-	/**
-	 * {@inheritdoc}
-	 */
-	public function run(IOutput $output) {
-		$appsToUpdate = [
-			'contacts' => [
-				'old' => '166044',
-				'new' => '168708',
-			],
-			'calendar' => [
-				'old' => '166043',
-				'new' => '168707',
-			],
-			'bookmarks' => [
-				'old' => '166042',
-				'new' => '168710',
-			],
-			'search_lucene' => [
-				'old' => '166057',
-				'new' => '168709',
-			],
-			'documents' => [
-				'old' => '166045',
-				'new' => '168711',
-			]
-		];
-
-		foreach($appsToUpdate as $appName => $ids) {
-			if ($this->fixOcsId($appName, $ids['old'], $ids['new'])) {
-				$output->info("Fixed invalid $appName OCS id");
-			}
-		}
-	}
-}