MDEV-6075: Allow > 16K pages on InnoDB

This patch allows up to 64K pages for tables with DYNAMIC, COMPACT 
and REDUNDANT row types. Tables with COMPRESSED row type allows 
still only <= 16K page size. Note that single row size must be
still <= 16K and max key length is not affected.

mysql-test/include/have_innodb_32k.inc

+if (`SELECT COUNT(*) = 0 FROM INFORMATION_SCHEMA.GLOBAL_STATUS WHERE LOWER(variable_name) = 'innodb_page_size' AND variable_value = 32768`)
+{
+
+  --skip Test requires InnoDB with 32k Page size.
+
+}
\ No newline at end of file

mysql-test/include/have_innodb_64k.inc

+if (`SELECT COUNT(*) = 0 FROM INFORMATION_SCHEMA.GLOBAL_STATUS WHERE LOWER(variable_name) = 'innodb_page_size' AND variable_value = 65536`)
+{
+  --skip Test requires InnoDB with 64k Page size.
+}

mysql-test/suite/innodb/t/innodb-16k-master.opt

+--default_storage_engine=InnoDB

mysql-test/suite/innodb/t/innodb-32k-crash-master.opt

+--default_storage_engine=InnoDB --innodb-buffer-pool-size=24M

mysql-test/suite/innodb/t/innodb-32k-master.opt

+--default_storage_engine=InnoDB --innodb-buffer-pool-size=24M

mysql-test/suite/innodb/t/innodb-64k-crash-master.opt

+--default_storage_engine=InnoDB --innodb-buffer-pool-size=24M

mysql-test/suite/innodb/t/innodb-64k-master.opt

+--default_storage_engine=InnoDB --innodb-buffer-pool-size=24M

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

@@ -3,6 +3,7 @@
 # columns are stored off-page.
 
 --source include/have_innodb.inc
+--source include/have_innodb_16k.inc
 
 # DEBUG_SYNC must be compiled in.
 --source include/have_debug_sync.inc

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

@@ -14,6 +14,7 @@
 #######################################################################
 
 -- source include/have_innodb.inc
+-- source include/have_innodb_16k.inc
 
 let $MYSQLD_DATADIR= `select @@datadir`;
 

mysql-test/suite/innodb/t/innodb_bug12400341.test

 # Test for bug #12400341: INNODB CAN LEAVE ORPHAN IBD FILES AROUND
 
 -- source include/have_innodb.inc
+-- source include/have_innodb_16k.inc
 
 if (`select count(*)=0 from information_schema.global_variables where variable_name = 'INNODB_TRX_RSEG_N_SLOTS_DEBUG'`)
 {

storage/innobase/fil/fil0fil.cc

@@ -829,13 +829,17 @@ fil_node_open_file(
 			ut_error;
 		}
 
-		if (size_bytes >= 1024 * 1024) {
-			/* Truncate the size to whole megabytes. */
-			size_bytes = ut_2pow_round(size_bytes, 1024 * 1024);
+		if (size_bytes >= FSP_EXTENT_SIZE * UNIV_PAGE_SIZE) {
+			/* Truncate the size to whole extent size. */
+			size_bytes = ut_2pow_round(size_bytes,
+						   FSP_EXTENT_SIZE *
+						   UNIV_PAGE_SIZE);
 		}
 
 		if (!fsp_flags_is_compressed(flags)) {
-			node->size = (ulint) (size_bytes / UNIV_PAGE_SIZE);
+			node->size = (ulint)
+				(size_bytes
+				 / fsp_flags_get_page_size(flags));
 		} else {
 			node->size = (ulint)
 				(size_bytes
@@ -1987,6 +1991,9 @@ fil_check_first_page(
 	flags = mach_read_from_4(FSP_HEADER_OFFSET + FSP_SPACE_FLAGS + page);
 
 	if (UNIV_PAGE_SIZE != fsp_flags_get_page_size(flags)) {
+		fprintf(stderr, "InnoDB: Error: Current page size %lu != page size on page %lu\n",
+			UNIV_PAGE_SIZE, fsp_flags_get_page_size(flags));
+
 		return("innodb-page-size mismatch");
 	}
 

storage/innobase/handler/ha_innodb.cc

@@ -2922,6 +2922,22 @@ innobase_init(
 		}
 	}
 
+	if (UNIV_PAGE_SIZE != UNIV_PAGE_SIZE_DEF) {
+		fprintf(stderr,
+			"InnoDB: Warning: innodb_page_size has been "
+			"changed from default value %d to %ldd. (###EXPERIMENTAL### "
+			"operation)\n", UNIV_PAGE_SIZE_DEF, UNIV_PAGE_SIZE);
+
+		/* There is hang on buffer pool when trying to get a new
+		page if buffer pool size is too small for large page sizes */
+		if (innobase_buffer_pool_size < (24 * 1024 * 1024)) {
+			fprintf(stderr, "InnoDB: Error: innobase_page_size %lu requires "
+				"innodb_buffer_pool_size > 24M current %lld",
+				UNIV_PAGE_SIZE, innobase_buffer_pool_size);
+			goto error;
+		}
+	}
+
 	os_innodb_umask = (ulint) my_umask;
 
 	/* First calculate the default path for innodb_data_home_dir etc.,