Merge 10.5 into 10.6

extra/mariabackup/xtrabackup.cc

@@ -5564,9 +5564,22 @@ xtrabackup_apply_delta(
 					buf + FSP_HEADER_OFFSET + FSP_SIZE);
 				if (mach_read_from_4(buf
 						     + FIL_PAGE_SPACE_ID)) {
+#ifdef _WIN32
+					os_offset_t last_page =
+					  os_file_get_size(dst_file) /
+					  page_size;
+
+					/* os_file_set_size() would
+					shrink the size of the file */
+					if (last_page < n_pages &&
+					    !os_file_set_size(
+					       dst_path, dst_file,
+					       n_pages * page_size))
+#else
 					if (!os_file_set_size(
 						    dst_path, dst_file,
 						    n_pages * page_size))
+#endif /* _WIN32 */
 						goto error;
 				} else if (fil_space_t* space
 					   = fil_system.sys_space) {

mysql-test/include/long_test.inc

@@ -1,6 +1,6 @@
 # We use this --source include to mark a test as taking long to run.
 # We can use this to schedule such test early (to not be left with
-# only one or two long tests running, and rests of works idle), or to
+# only one or two long tests running, and rests of workers idle), or to
 # run a quick test skipping long-running test cases.
 
 --source include/no_valgrind_without_big.inc

mysql-test/main/backup_locks.test

@@ -2,6 +2,7 @@
 # Tests BACKUP STAGE locking
 ########################################################################
 
+--source include/long_test.inc
 --source include/have_innodb.inc
 --source include/have_metadata_lock_info.inc
 --source include/not_embedded.inc

mysql-test/main/skip_grants.result

@@ -137,3 +137,11 @@ drop user baz@baz;
 #
 # End of 10.3 tests
 #
+#
+# MDEV-34501: SIGSEGV in pfs_start_mutex_wait_v1, __strlen_avx2, or __strlen_evex from safe_mutex_lock on CREATE DEFINER when using skip-grant-tables
+#
+CREATE DEFINER=a PROCEDURE p() SELECT 1;
+CREATE DEFINER=a FUNCTION f() RETURNS INT RETURN 100;
+DROP PROCEDURE p;
+DROP FUNCTION f;
+# End of 10.5 tests

mysql-test/main/skip_grants.test

@@ -168,3 +168,14 @@ drop user baz@baz;
 --echo #
 --echo # End of 10.3 tests
 --echo #
+
+--echo #
+--echo # MDEV-34501: SIGSEGV in pfs_start_mutex_wait_v1, __strlen_avx2, or __strlen_evex from safe_mutex_lock on CREATE DEFINER when using skip-grant-tables
+--echo #
+CREATE DEFINER=a PROCEDURE p() SELECT 1;
+CREATE DEFINER=a FUNCTION f() RETURNS INT RETURN 100;
+
+DROP PROCEDURE p;
+DROP FUNCTION f;
+
+--echo # End of 10.5 tests

mysql-test/main/sp-bugs.result

@@ -388,5 +388,14 @@ ERROR 23000: Column 'c2' in FROM is ambiguous
 DROP PROCEDURE p2;
 DROP TABLE t1, t2;
 #
+# MDEV-34501: SIGSEGV in pfs_start_mutex_wait_v1, __strlen_avx2, or __strlen_evex from safe_mutex_lock on CREATE DEFINER when using skip-grant-tables
+#
+# This test is a duplicate of the one located in the file skip_grants.test
+# and placed here to check the same test case against embedded-server
+CREATE DEFINER=a PROCEDURE p() SELECT 1;
+CREATE DEFINER=a FUNCTION f() RETURNS INT RETURN 100;
+DROP PROCEDURE p;
+DROP FUNCTION f;
+#
 # End of 10.5 tests
 #

mysql-test/main/sp-bugs.test

@@ -414,6 +414,26 @@ CALL p2 (@a,@c);
 DROP PROCEDURE p2;
 DROP TABLE t1, t2;
 
+--echo #
+--echo # MDEV-34501: SIGSEGV in pfs_start_mutex_wait_v1, __strlen_avx2, or __strlen_evex from safe_mutex_lock on CREATE DEFINER when using skip-grant-tables
+--echo #
+--echo # This test is a duplicate of the one located in the file skip_grants.test
+--echo # and placed here to check the same test case against embedded-server
+
+# Disable warnings before running the following CREATE PROCEDURE/FUNCTION
+# statement since the warning message
+#   "The user specified as a definer ('a'@'%') does not exist"
+# is output in case the test be run against a regular server
+# and isn't output if embedded server is used (@sa sp_process_definer()
+# in sql_parse.cc).
+--disable_warnings
+CREATE DEFINER=a PROCEDURE p() SELECT 1;
+CREATE DEFINER=a FUNCTION f() RETURNS INT RETURN 100;
+--enable_warnings
+
+DROP PROCEDURE p;
+DROP FUNCTION f;
+
 --echo #
 --echo # End of 10.5 tests
 --echo #

mysql-test/suite/binlog_encryption/encrypted_master.test

@@ -18,6 +18,7 @@
 # - with annotated events, default checksums and minimal binlog row image
 #
 
+--source include/long_test.inc
 # The test can take very long time with valgrind
 --source include/not_valgrind.inc
 

mysql-test/suite/funcs_2/t/innodb_charset.test

@@ -6,7 +6,7 @@
 # Checking of other prerequisites is in charset_master.test                    #
 ################################################################################
 
---source include/no_valgrind_without_big.inc
+--source include/long_test.inc
 --source include/have_innodb.inc
 
 # Starting with MariaDB 10.6, ensure that DDL recovery will have completed

mysql-test/suite/innodb/t/innodb_bug52663.test

@@ -1,3 +1,4 @@
+--source include/long_test.inc
 --source include/have_innodb.inc
 
 set session transaction isolation level read committed;

mysql-test/suite/innodb_gis/r/rollback.result

@@ -412,3 +412,16 @@ update t1 set a=point(5,5), b=point(5,5), c=5 where i < 3;
 ERROR HY000: Lost connection to server during query
 insert into t1 values(5, point(5,5), point(5,5), 5);
 drop table t1;
+#
+# MDEV-35420 Server aborts while deleting the record
+#               in spatial index
+#
+CREATE TABLE t1 (c POINT NOT NULL, SPATIAL(c)) engine=InnoDB;
+CHECK TABLE t1;
+Table	Op	Msg_type	Msg_text
+test.t1	check	status	OK
+SET STATEMENT unique_checks=0,foreign_key_checks=0 FOR
+START TRANSACTION;
+INSERT INTO t1 SELECT ST_GeomFromText('POINT(114368751 656950466)') FROM seq_1_to_512;
+ROLLBACK;
+DROP TABLE t1;

mysql-test/suite/innodb_gis/t/rollback.test

@@ -8,6 +8,7 @@
 # Avoid CrashReporter popup on Mac
 --source include/not_crashrep.inc
 --source include/have_innodb_16k.inc
+--source include/have_sequence.inc
 
 CREATE TABLE t4 (id bigint(12) unsigned NOT NULL auto_increment,
   c2 varchar(15) collate utf8_bin default NULL,
@@ -475,3 +476,15 @@ update t1 set a=point(5,5), b=point(5,5), c=5 where i < 3;
 insert into t1 values(5, point(5,5), point(5,5), 5);
 
 drop table t1;
+
+--echo #
+--echo # MDEV-35420 Server aborts while deleting the record
+--echo #               in spatial index
+--echo #
+CREATE TABLE t1 (c POINT NOT NULL, SPATIAL(c)) engine=InnoDB;
+CHECK TABLE t1;
+SET STATEMENT unique_checks=0,foreign_key_checks=0 FOR
+START TRANSACTION;
+INSERT INTO t1 SELECT ST_GeomFromText('POINT(114368751 656950466)') FROM seq_1_to_512;
+ROLLBACK;
+DROP TABLE t1;

mysql-test/suite/mariabackup/incremental_compressed.result

@@ -4,6 +4,9 @@
 #
 CREATE TABLE t (pk INT PRIMARY KEY) ENGINE=InnoDB ROW_FORMAT=COMPRESSED;
 ALTER TABLE t PARTITION BY KEY(pk);
+# Incremental backup
+# Prepare fullbackup
+# Prepare incremental backup
 # shutdown server
 # remove datadir
 # xtrabackup move back

mysql-test/suite/mariabackup/incremental_compressed.test

@@ -16,12 +16,18 @@ CREATE TABLE t (pk INT PRIMARY KEY) ENGINE=InnoDB ROW_FORMAT=COMPRESSED;
 
 ALTER TABLE t PARTITION BY KEY(pk);
 
+--echo # Incremental backup
 --exec $XTRABACKUP --backup --target-dir=$incremental_dir --incremental-basedir=$basedir --protocol=tcp --port=$MASTER_MYPORT --user=root > $incremental_dir.log 2>&1
+--echo # Prepare fullbackup
 --exec $XTRABACKUP --prepare --target-dir=$basedir --user=root > $MYSQL_TMP_DIR/backup_prepare_0.log 2>&1
---exec $XTRABACKUP --prepare --target-dir=$basedir --incremental-dir=$incremental_dir --user=root >  $MYSQL_TMP_DIR/backup_prepare_1.log
+--echo # Prepare incremental backup
---cat_file $MYSQL_TMP_DIR/backup_prepare_1.log
+--exec $XTRABACKUP --prepare --target-dir=$basedir --incremental-dir=$incremental_dir --user=root >  $MYSQL_TMP_DIR/backup_prepare_1.log 2>&1
 let $targetdir=$basedir;
 -- source include/restart_and_restore.inc
-
 SHOW CREATE TABLE t;
 DROP TABLE t;
+remove_file $incremental_dir.log;
+remove_file $MYSQL_TMP_DIR/backup_prepare_0.log;
+remove_file $MYSQL_TMP_DIR/backup_prepare_1.log;
+rmdir $basedir;
+rmdir $incremental_dir;

mysql-test/suite/mariabackup/log_page_corruption.test

@@ -1,5 +1,5 @@
+--source include/long_test.inc
 --source include/have_debug.inc
---source include/no_valgrind_without_big.inc
 --source include/innodb_undo_tablespaces.inc
 
 --echo ########

mysql-test/suite/parts/t/partition_exchange_innodb.test

@@ -1,3 +1,4 @@
+--source include/long_test.inc
 --source include/have_innodb.inc
 --source include/have_partition.inc
 --source include/have_debug_sync.inc

mysql-test/suite/parts/t/partition_exchange_memory.test

@@ -1,3 +1,4 @@
+--source include/long_test.inc
 --source include/have_partition.inc
 --source include/have_debug_sync.inc
 

mysql-test/suite/parts/t/partition_exchange_myisam.test

@@ -1,3 +1,4 @@
+--source include/long_test.inc
 --source include/have_partition.inc
 --source include/have_debug_sync.inc
 

mysql-test/suite/rpl/r/rpl_gtid_crash.result

@@ -12,6 +12,8 @@ INSERT INTO t1 VALUES (1, 0);
 connection server_2;
 SET sql_log_bin=0;
 call mtr.add_suppression('Master command COM_REGISTER_SLAVE failed: failed registering on master, reconnecting to try again');
+call mtr.add_suppression('Slave I/O: .*Lost connection to server during query');
+call mtr.add_suppression("Slave I/O thread couldn't register on master");
 SET sql_log_bin=1;
 include/stop_slave.inc
 CHANGE MASTER TO master_host = '127.0.0.1', master_port = MASTER_PORT,

mysql-test/suite/rpl/t/rpl_gtid_crash-slave.opt

@@ -1 +1 @@
---master-retry-count=100 --slave-net-timeout=10
+--master-retry-count=500 --slave-net-timeout=10

mysql-test/suite/rpl/t/rpl_gtid_crash.test

@@ -24,6 +24,8 @@ INSERT INTO t1 VALUES (1, 0);
 --sync_with_master
 SET sql_log_bin=0;
 call mtr.add_suppression('Master command COM_REGISTER_SLAVE failed: failed registering on master, reconnecting to try again');
+call mtr.add_suppression('Slave I/O: .*Lost connection to server during query');
+call mtr.add_suppression("Slave I/O thread couldn't register on master");
 SET sql_log_bin=1;
 --source include/stop_slave.inc
 --replace_result $MASTER_MYPORT MASTER_PORT

mysql-test/suite/rpl/t/rpl_heartbeat_basic.test

@@ -9,6 +9,7 @@
 # * Various states of master and heartbeat
 # * Circular replication
 #############################################################
+--source include/long_test.inc
 --source include/master-slave.inc
 #
 # The test runs long and does not have any specifics to 

mysql-test/suite/rpl/t/rpl_semi_sync.test

@@ -4,6 +4,7 @@
 # Please check all dependent tests after modifying it
 #
 
+source include/long_test.inc;
 source include/not_embedded.inc;
 source include/have_innodb.inc;
 source include/master-slave.inc;

mysql-test/suite/rpl/t/rpl_semi_sync_after_sync.test

@@ -1,3 +1,4 @@
+--source include/long_test.inc
 --source include/have_binlog_format_statement.inc
 set global rpl_semi_sync_master_wait_point=AFTER_SYNC;
 source rpl_semi_sync.test;

mysql-test/suite/rpl/t/rpl_semi_sync_after_sync_row.test

@@ -1,3 +1,4 @@
+--source include/long_test.inc
 --source include/have_binlog_format_row.inc
 set global rpl_semi_sync_master_wait_point=AFTER_SYNC;
 source rpl_semi_sync.test;

mysql-test/suite/rpl/t/rpl_typeconv.test

@@ -4,6 +4,7 @@
 # Please check all dependent tests after modifying it
 #
 
+--source include/long_test.inc
 --source include/have_binlog_format_row.inc
 --source include/master-slave.inc
 

sql/filesort.cc

@@ -673,7 +673,7 @@ const char* dbug_print_row(TABLE *table, const uchar *rec, bool print_names)
     move_back_guard.engage();
   }
 
-  SCOPE_VALUE(table->read_set, (table->read_set && table->write_set) ?
+  SCOPE_VALUE(table->read_set, (table->reginfo.lock_type >= TL_WRITE_ALLOW_WRITE) ?
                                 table->write_set : table->read_set);
 
   output.length(0);

sql/slave.cc

@@ -3186,21 +3186,23 @@ static bool send_show_master_info_data(THD *thd, Master_info *mi, bool full,
     if (full)
       protocol->store(mi->connection_name.str, mi->connection_name.length,
                       &my_charset_bin);
+
     mysql_mutex_lock(&mi->run_lock);
+    THD *sql_thd= mi->rli.sql_driver_thd;
+    const char *slave_sql_running_state=
+      sql_thd ? sql_thd->get_proc_info() : "";
+    THD *io_thd= mi->io_thd;
+    const char *slave_io_running_state= io_thd ? io_thd->get_proc_info() : "";
+    mysql_mutex_unlock(&mi->run_lock);
+
     if (full)
-    {
       /*
         Show what the sql driver replication thread is doing
         This is only meaningful if there is only one slave thread.
       */
-      msg= (mi->rli.sql_driver_thd ?
+      protocol->store_string_or_null(slave_sql_running_state, &my_charset_bin);
-            mi->rli.sql_driver_thd->get_proc_info() : "");
-      protocol->store_string_or_null(msg, &my_charset_bin);
-    }
-    msg= mi->io_thd ? mi->io_thd->get_proc_info() : "";
-    protocol->store_string_or_null(msg, &my_charset_bin);
 
-    mysql_mutex_unlock(&mi->run_lock);
+    protocol->store_string_or_null(slave_io_running_state, &my_charset_bin);
 
     mysql_mutex_lock(&mi->data_lock);
     mysql_mutex_lock(&mi->rli.data_lock);
@@ -3374,10 +3376,6 @@ static bool send_show_master_info_data(THD *thd, Master_info *mi, bool full,
 
     protocol->store((uint32) mi->rli.get_sql_delay());
     // SQL_Remaining_Delay
-    // THD::proc_info is not protected by any lock, so we read it once
-    // to ensure that we use the same value throughout this function.
-    const char *slave_sql_running_state=
-      mi->rli.sql_driver_thd ? mi->rli.sql_driver_thd->proc_info : "";
     if (slave_sql_running_state == stage_sql_thd_waiting_until_delay.m_name)
     {
       time_t t= my_time(0), sql_delay_end= mi->rli.get_sql_delay_end();

sql/sql_acl.cc

@@ -12975,6 +12975,9 @@ LEX_USER *get_current_user(THD *thd, LEX_USER *user, bool lock)
     if (is_invalid_role_name(user->user.str))
       return 0;
 
+    if (!initialized)
+      return dup;
+
     if (lock)
       mysql_mutex_lock(&acl_cache->lock);
     if (find_acl_role(dup->user.str))

sql/sql_truncate.cc

@@ -303,7 +303,7 @@ Sql_cmd_truncate_table::handler_truncate(THD *thd, TABLE_LIST *table_ref,
 bool Sql_cmd_truncate_table::lock_table(THD *thd, TABLE_LIST *table_ref,
                                         bool *hton_can_recreate)
 {
-  handlerton *hton;
+  const handlerton *hton;
   bool versioned;
   bool sequence= false;
   TABLE *table= NULL;
@@ -374,8 +374,12 @@ bool Sql_cmd_truncate_table::lock_table(THD *thd, TABLE_LIST *table_ref,
          table we need to find out default partition
          handlerton.
       */
-      const handlerton *ht= share->default_part_plugin ?
+      const handlerton* const ht=
-        plugin_hton(share->default_part_plugin) : hton;
+#ifdef WITH_PARTITION_STORAGE_ENGINE
+        share->default_part_plugin ?
+          plugin_hton(share->default_part_plugin) :
+#endif
+        hton;
 
       if (ht && !wsrep_should_replicate_ddl(thd, ht))
       {

sql/structs.h

@@ -235,7 +235,7 @@ struct AUTHID
   LEX_CSTRING user, host;
   void init() { memset(this, 0, sizeof(*this)); }
   void copy(MEM_ROOT *root, const LEX_CSTRING *usr, const LEX_CSTRING *host);
-  bool is_role() const { return user.str[0] && !host.str[0]; }
+  bool is_role() const { return user.str[0] && (!host.str || !host.str[0]); }
   void set_lex_string(LEX_CSTRING *l, char *buf)
   {
     if (is_role())

storage/innobase/gis/gis0sea.cc

@@ -504,10 +504,10 @@ rtr_pcur_move_to_next(
 		rtr_rec_t	rec;
 		rec = rtr_info->matches->matched_recs->back();
 		rtr_info->matches->matched_recs->pop_back();
+		cursor->btr_cur.page_cur.block = rtr_info->matches->block;
 		mysql_mutex_unlock(&rtr_info->matches->rtr_match_mutex);
 
 		cursor->btr_cur.page_cur.rec = rec.r_rec;
-		cursor->btr_cur.page_cur.block = rtr_info->matches->block;
 
 		DEBUG_SYNC_C("rtr_pcur_move_to_next_return");
 		return(true);
@@ -1565,7 +1565,10 @@ rtr_check_discard_page(
 		if (auto matches = rtr_info->matches) {
 			mysql_mutex_lock(&matches->rtr_match_mutex);
 
-			if (matches->block->page.id() == id) {
+			/* matches->block could be nullptr when cursor
+			encounters empty table */
+			if (rtr_info->matches->block
+			    && matches->block->page.id() == id) {
 				matches->matched_recs->clear();
 				matches->valid = false;
 			}
@@ -2201,6 +2204,15 @@ rtr_cur_search_with_match(
 					ut_ad(orig_mode
 					      != PAGE_CUR_RTREE_LOCATE);
 
+					/* Collect matched records on page */
+					offsets = rec_get_offsets(
+						rec, index, offsets,
+						index->n_fields,
+						ULINT_UNDEFINED, &heap);
+
+					mysql_mutex_lock(
+					  &rtr_info->matches->rtr_match_mutex);
+
 					if (!match_init) {
 						rtr_init_match(
 							rtr_info->matches,
@@ -2208,14 +2220,12 @@ rtr_cur_search_with_match(
 						match_init = true;
 					}
 
-					/* Collect matched records on page */
-					offsets = rec_get_offsets(
-						rec, index, offsets,
-						index->n_fields,
-						ULINT_UNDEFINED, &heap);
 					rtr_leaf_push_match_rec(
 						rec, rtr_info, offsets,
 						page_is_comp(page));
+
+					mysql_mutex_unlock(
+					  &rtr_info->matches->rtr_match_mutex);
 				}
 
 				last_match_rec = rec;

support-files/mariadb.service.in

@@ -48,10 +48,13 @@ User=mysql
 Group=mysql
 
 # CAP_IPC_LOCK To allow memlock to be used as non-root user
+# These are enabled by default
+AmbientCapabilities=CAP_IPC_LOCK
+
 # CAP_DAC_OVERRIDE To allow auth_pam_tool (which is SUID root) to read /etc/shadow when it's chmod 0
 #   does nothing for non-root, not needed if /etc/shadow is u+r
 # CAP_AUDIT_WRITE auth_pam_tool needs it on Debian for whatever reason
-AmbientCapabilities=CAP_IPC_LOCK CAP_DAC_OVERRIDE CAP_AUDIT_WRITE
+CapabilityBoundingSet=CAP_DAC_OVERRIDE CAP_AUDIT_WRITE
 
 # PrivateDevices=true implies NoNewPrivileges=true and
 # SUID auth_pam_tool suddenly doesn't do setuid anymore

support-files/mariadb@.service.in

@@ -178,10 +178,13 @@ PrivateNetwork=false
 ##
 
 # CAP_IPC_LOCK To allow memlock to be used as non-root user
+# These are enabled by default
+AmbientCapabilities=CAP_IPC_LOCK
+
 # CAP_DAC_OVERRIDE To allow auth_pam_tool (which is SUID root) to read /etc/shadow when it's chmod 0
 #   does nothing for non-root, not needed if /etc/shadow is u+r
 # CAP_AUDIT_WRITE auth_pam_tool needs it on Debian for whatever reason
-AmbientCapabilities=CAP_IPC_LOCK CAP_DAC_OVERRIDE CAP_AUDIT_WRITE
+CapabilityBoundingSet=CAP_DAC_OVERRIDE CAP_AUDIT_WRITE
 
 # PrivateDevices=true implies NoNewPrivileges=true and
 # SUID auth_pam_tool suddenly doesn't do setuid anymore

support-files/rpm/server-prein.sh

@@ -28,10 +28,11 @@ startup script in %{_sysconfdir}/init.d/.
 
   if [ "$old_family" != "$new_family" ]; then
     error_text="$error_text
-Upgrading directly from MySQL $old_family to MariaDB $new_family may not
+Upgrading directly from MariaDB or MySQL $old_family
-be safe in all cases.  A manual dump and restore using mysqldump is
+to MariaDB $new_family may not be safe in all cases.
-recommended.  It is important to review the MariaDB manual's Upgrading
+A manual dump and restore using mariadb-dump (or mysqldump) is recommended.
-section for version-specific incompatibilities.
+It is important to review the MariaDB manual's Upgrading section for
+version-specific incompatibilities.
 "
   fi
 
@@ -39,23 +40,23 @@ section for version-specific incompatibilities.
     cat <<HERE >&2
 
 ******************************************************************
-A MySQL or MariaDB server package ($installed) is installed.
+A MariaDB or MySQL server package ($installed) is installed.
 $error_text
 A manual upgrade is required.
 
 - Ensure that you have a complete, working backup of your data and my.cnf
   files
-- Shut down the MySQL server cleanly
+- Shut down the MariaDB or MySQL server cleanly
-- Remove the existing MySQL packages.  Usually this command will
+- Remove the existing MariaDB or MySQL packages. Usually this command will
   list the packages you should remove:
-  rpm -qa | grep -i '^mysql-'
+  rpm -qa | grep -iE '^(mariadb|mysql)-'
 
   You may choose to use 'rpm --nodeps -ev <package-name>' to remove
   the package which contains the mysqlclient shared library.  The
   library will be reinstalled by the MariaDB-shared package.
 - Install the new MariaDB packages supplied by $myvendor
 - Ensure that the MariaDB server is started
-- Run the 'mysql_upgrade' program
+- Run the 'mariadb-upgrade' program
 
 This is a brief description of the upgrade process.  Important details
 can be found in the MariaDB manual, in the Upgrading section.
@@ -65,8 +66,8 @@ HERE
   fi
 fi
 
-# Create a MySQL user and group. Do not report any problems if it already exists.
+# Create a MariaDB user and group. Do not report any problems if it already exists.
 groupadd -r %{mysqld_group} 2> /dev/null || true
-useradd -M -r --home %{mysqldatadir} --shell /sbin/nologin --comment "MySQL server" --gid %{mysqld_group} %{mysqld_user} 2> /dev/null || true
+useradd -M -r --home %{mysqldatadir} --shell /sbin/nologin --comment "MariaDB server" --gid %{mysqld_group} %{mysqld_user} 2> /dev/null || true
 # The user may already exist, make sure it has the proper group nevertheless (BUG#12823)
 usermod --gid %{mysqld_group} %{mysqld_user} 2> /dev/null || true