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MariaDB 10.0/MySQL 5.6 using innodb-page-size!=16K The storage format of FSP_SPACE_FLAGS was accidentally broken already in MariaDB 10.1.0. This fix is bringing the format in line with other MySQL and MariaDB release series. Please refer to the comments that were added to fsp0fsp.h for details. This is an INCOMPATIBLE CHANGE that affects users of page_compression and non-default innodb_page_size. Upgrading to this release will correct the flags in the data files. If you want to downgrade to earlier MariaDB 10.1.x, please refer to the test innodb.101_compatibility how to reset the FSP_SPACE_FLAGS in the files. NOTE: MariaDB 10.1.0 to 10.1.20 can misinterpret uncompressed data files with innodb_page_size=4k or 64k as compressed innodb_page_size=16k files, and then probably fail when trying to access the pages. See the comments in the function fsp_flags_convert_from_101() for detailed analysis. Move PAGE_COMPRESSION to FSP_SPACE_FLAGS bit position 16. In this way, compressed innodb_page_size=16k tablespaces will not be mistaken for uncompressed ones by MariaDB 10.1.0 to 10.1.20. Derive PAGE_COMPRESSION_LEVEL, ATOMIC_WRITES and DATA_DIR from the dict_table_t::flags when the table is available, in fil_space_for_table_exists_in_mem() or fil_open_single_table_tablespace(). During crash recovery, fil_load_single_table_tablespace() will use innodb_compression_level for the PAGE_COMPRESSION_LEVEL. FSP_FLAGS_MEM_MASK: A bitmap of the memory-only fil_space_t::flags that are not to be written to FSP_SPACE_FLAGS. Currently, these will include PAGE_COMPRESSION_LEVEL, ATOMIC_WRITES and DATA_DIR. Introduce the macro FSP_FLAGS_PAGE_SSIZE(). We only support one innodb_page_size for the whole instance. When creating a dummy tablespace for the redo log, use fil_space_t::flags=0. The flags are never written to the redo log files. Remove many FSP_FLAGS_SET_ macros. dict_tf_verify_flags(): Remove. This is basically only duplicating the logic of dict_tf_to_fsp_flags(), used in a debug assertion. fil_space_t::mark: Remove. This flag was not used for anything. fil_space_for_table_exists_in_mem(): Remove the unnecessary parameter mark_space, and add a parameter for table flags. Check that fil_space_t::flags match the table flags, and adjust the (memory-only) flags based on the table flags. fil_node_open_file(): Remove some redundant or unreachable conditions, do not use stderr for output, and avoid unnecessary server aborts. fil_user_tablespace_restore_page(): Convert the flags, so that the correct page_size will be used when restoring a page from the doublewrite buffer. fil_space_get_page_compressed(), fsp_flags_is_page_compressed(): Remove. It suffices to have fil_space_is_page_compressed(). FSP_FLAGS_WIDTH_DATA_DIR, FSP_FLAGS_WIDTH_PAGE_COMPRESSION_LEVEL, FSP_FLAGS_WIDTH_ATOMIC_WRITES: Remove, because these flags do not exist in the FSP_SPACE_FLAGS but only in memory. fsp_flags_try_adjust(): New function, to adjust the FSP_SPACE_FLAGS in page 0. Called by fil_open_single_table_tablespace(), fil_space_for_table_exists_in_mem(), innobase_start_or_create_for_mysql() except if --innodb-read-only is active. fsp_flags_is_valid(ulint): Reimplement from the scratch, with accurate comments. Do not display any details of detected inconsistencies, because the output could be confusing when dealing with MariaDB 10.1.x data files. fsp_flags_convert_from_101(ulint): Convert flags from buggy MariaDB 10.1.x format, or return ULINT_UNDEFINED if the flags cannot be in MariaDB 10.1.x format. fsp_flags_match(): Check the flags when probing files. Implemented based on fsp_flags_is_valid() and fsp_flags_convert_from_101(). dict_check_tablespaces_and_store_max_id(): Do not access the page after committing the mini-transaction. IMPORT TABLESPACE fixes: AbstractCallback::init(): Convert the flags. FetchIndexRootPages::operator(): Check that the tablespace flags match the table flags. Do not attempt to convert tablespace flags to table flags, because the conversion would necessarily be lossy. PageConverter::update_header(): Write back the correct flags. This takes care of the flags in IMPORT TABLESPACE.
75 lines
2.7 KiB
C
75 lines
2.7 KiB
C
/*****************************************************************************
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Copyright (C) 2013, 2017, MariaDB Corporation. All Rights Reserved.
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This program is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free Software
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Foundation; version 2 of the License.
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This program is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along with
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this program; if not, write to the Free Software Foundation, Inc.,
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51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*****************************************************************************/
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/******************************************************************//**
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@file include/fsp0pagecompress.h
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Helper functions for extracting/storing page compression and
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atomic writes information to file space.
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Created 11/12/2013 Jan Lindström jan.lindstrom@skysql.com
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***********************************************************************/
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#ifndef fsp0pagecompress_h
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#define fsp0pagecompress_h
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/* Supported page compression methods */
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#define PAGE_UNCOMPRESSED 0
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#define PAGE_ZLIB_ALGORITHM 1
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#define PAGE_LZ4_ALGORITHM 2
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#define PAGE_LZO_ALGORITHM 3
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#define PAGE_LZMA_ALGORITHM 4
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#define PAGE_BZIP2_ALGORITHM 5
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#define PAGE_SNAPPY_ALGORITHM 6
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#define PAGE_ALGORITHM_LAST PAGE_SNAPPY_ALGORITHM
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/**********************************************************************//**
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Reads the page compression level from the first page of a tablespace.
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@return page compression level, or 0 if uncompressed */
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UNIV_INTERN
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ulint
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fsp_header_get_compression_level(
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/*=============================*/
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const page_t* page); /*!< in: first page of a tablespace */
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/********************************************************************//**
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Extract the page compression level from tablespace flags.
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A tablespace has only one physical page compression level
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whether that page is compressed or not.
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@return page compression level of the file-per-table tablespace,
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or zero if the table is not compressed. */
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UNIV_INLINE
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ulint
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fsp_flags_get_page_compression_level(
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/*=================================*/
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ulint flags); /*!< in: tablespace flags */
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/********************************************************************//**
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Determine the tablespace is using atomic writes from dict_table_t::flags.
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@return true if atomic writes is used, false if not */
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UNIV_INLINE
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atomic_writes_t
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fsp_flags_get_atomic_writes(
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/*========================*/
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ulint flags); /*!< in: tablespace flags */
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#ifndef UNIV_NONINL
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#include "fsp0pagecompress.ic"
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#endif
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#endif
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