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MariaDB server is a community developed fork of MySQL server. Started by core members of the original MySQL team, MariaDB actively works with outside developers to deliver the most featureful, stable, and sanely licensed open SQL server in the industry.
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1) on Mac OS X >=10.3, fcntl() is recommended over fsync (from the man page: "[With fsync()] the disk drive may also re-order the data so that later writes may be present while earlier writes are not. Applications such as databases that require a strict ordering of writes should use F_FULLFSYNC to ensure their data is written in the order they expect"). I have seen two other pieces of software changing from fsync to F_FULLFSYNC on Mac OS X. 2) to make a file creation/deletion/renaming durable on Linux (at least ext2 as I have tested) (see "man fsync"), a fsync() on the directory is needed: new functions to do that, and a flag MY_SYNC_DIR to do it in my_create/my_delete/my_rename. 3) now using this directory syncing when creating he frm if opt_sync_frm, and for Maria's control file when it is created. include/my_sys.h: new flag to my_create/my_delete/my_rename, which asks to sync the directory after the operation is done (currently does nothing except on Linux) libmysql/CMakeLists.txt: my_create() now depends on my_sync() so my_sync is needed for libmysql libmysql/Makefile.shared: my_create() now depends on my_sync() so my_sync is needed for libmysql mysys/my_create.c: my_create() can now sync the directory if asked for mysys/my_delete.c: my_delete() can now sync the directory if asked for mysys/my_open.c: it was a bug that my_close() is done on fd but a positive fd would still be returned, by my_register_filename(). mysys/my_rename.c: my_rename() can now sync the two directories (the one of "from" and the one of "to") if asked for. mysys/my_sync.c: On recent Mac OS X, fcntl(F_FULLFSYNC) is recommended over fsync() (see "man fsync" on Mac OS X 10.3). my_sync_dir(): to sync a directory after a file creation/deletion/ renaming; can be called directly or via MY_SYNC_DIR in my_create/ my_delete/my_rename(). No-op except on Linux (see "man fsync" on Linux). my_sync_dir_from_file(): same as above, just more practical when the caller has a file name but no directory name ready. Should the #warning even be a #error? I mean do we want to release binaries which don't guarantee any durability? sql/log.cc: a TODO for the future. sql/unireg.cc: If we sync the frm it makes sense to also sync its creation in the directory. storage/maria/ma_control_file.c: control file is vital, try to make it to disk |
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| extra | ||
| include | ||
| libmysql | ||
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| libmysqld | ||
| man | ||
| mysql-test | ||
| mysys | ||
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| vio | ||
| win | ||
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| .bzrignore | ||
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| CMakeLists.txt | ||
| configure.in | ||
| COPYING | ||
| Makefile.am | ||
| README | ||
This is a release of MySQL, a dual-license SQL database server. MySQL is brought to you by the MySQL team at MySQL AB. License information can be found in these files: - For GPL (free) distributions, see the COPYING file. - For commercial distributions, see the MySQLEULA.txt file. For further information about MySQL or additional documentation, see: - The latest information about MySQL: http://www.mysql.com - The current MySQL documentation: http://dev.mysql.com/doc Some manual sections of special interest: - If you are migrating from an older version of MySQL, please read the "Upgrading from..." section first! - To see what MySQL can do, take a look at the features section. - For installation instructions, see the Installation chapter. - For future plans, see the TODO appendix. - For the new features/bugfix history, see the News appendix. - For the currently known bugs/misfeatures (known errors) see the problems appendix. - For a list of developers and other contributors, see the Credits appendix. A local copy of the MySQL Reference Manual can be found in the Docs directory in GNU Info format. You can also browse the manual online or download it in any of several formats at the URL given earlier in this file. ************************************************************ IMPORTANT: Bug or error reports should be sent to http://bugs.mysql.com.