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Author SHA1 Message Date
unknown
e27890cab0 WL#3072 Maria recovery 
* create page cache before initializing engine and not after, because
Maria's recovery needs a page cache
* make the creation of a bitmap page more crash-resistent
* bugfix (see ma_blockrec.c)
* back to old way: create an 8k bitmap page when creating table
* preparations for the UNDO phase: recreate TRNs
* preparations for Checkpoint: list of dirty pages, testing
of rec_lsn to know if page should be skipped during Recovery
(unused in this patch as no Checkpoint module pushed yet)
* maria_chk tags repaired table with a special LSN
* reworking all around in ma_recovery.c (less duplication)


mysys/my_realloc.c:
  noted an issue in my_realloc()
sql/mysqld.cc:
  page cache needs to be created before engines are initialized,
  because Maria's initialization may do a recovery which needs
  the page cache.
storage/maria/ha_maria.cc:
  update to new prototype
storage/maria/ma_bitmap.c:
  when creating the first bitmap page we used chsize to 8192 bytes then 
  pwrite (overwrite) the last 2 bytes (8191-8192). If crash between
  the two operations, this leaves a bitmap page full without its end
  marker. A later recovery may try to read this page and find it
  exists and misses a marker and conclude it's corrupted and fail.
  Changing the chsize to only 8190 bytes: recovery will then find
  the page is too short and recreate it entirely.
storage/maria/ma_blockrec.c:
  Fix for a bug: when executing a REDO, if the data page is created,
  data_file_length was increased before _ma_bitmap_set():
  _ma_bitmap_set() called _ma_read_bitmap_page() which, due to the
  increased data_file_length, expected to find a bitmap page on disk
  with a correct end marker; if the bitmap page didn't exist already
  in fact, this failed. Fixed by increasing data_file_length only after
  _ma_read_bitmap_page() has created the new bitmap page correctly.
  This bug could happen every time a REDO is about creating a new
  bitmap page.
storage/maria/ma_check.c:
  empty data file has a bitmap page
storage/maria/ma_control_file.c:
  useless parameter to ma_control_file_create_or_open(), just
  test if this is recovery.
storage/maria/ma_control_file.h:
  new prototype
storage/maria/ma_create.c:
  Back to how it was before: maria_create() creates an 8k bitmap page.
  Thus (bugfix) data_file_length needs to reflect this instead of being 0.
storage/maria/ma_loghandler.c:
  as ma_test1 and ma_test2 now use real transactions and not
  dummy_transaction_object, REDO for INSERT/UPDATE/DELETE are always
  about real transactions, can assert this.
  A function for Recovery to assign a short id to a table.
storage/maria/ma_loghandler.h:
  new function
storage/maria/ma_loghandler_lsn.h:
  maria_chk tags repaired tables with this LSN
storage/maria/ma_open.c:
  * enforce that DMLs on transactional tables use real transactions
  and not dummy_transaction_object.
  * test if table was repaired with maria_chk (which has to been
  seen as an import of an external table into the server), test
  validity of create_rename_lsn (header corruption detection)
  * comments.
storage/maria/ma_recovery.c:
  * preparations for the UNDO phase: recreate TRNs
  * preparations for Checkpoint: list of dirty pages, testing
  of rec_lsn to know if page should be skipped during Recovery
  (unused in this patch as no Checkpoint module pushed yet)
  * reworking all around (less duplication)
storage/maria/ma_recovery.h:
  a parameter to say if the UNDO phase should be skipped
storage/maria/maria_chk.c:
  tag repaired tables with a special LSN
storage/maria/maria_read_log.c:
  * update to new prototype
  * no UNDO phase in maria_read_log for now
storage/maria/trnman.c:
  * a function for Recovery to create a transaction (TRN), needed
  in the UNDO phase
  * a function for Recovery to grab an existing transaction, needed
  in the UNDO phase (rollback all existing transactions)
storage/maria/trnman_public.h:
  new functions
 2007-08-29 16:43:01 +02:00
unknown
6bbca54d7d WL#3072 - Maria recovery 
Unit test for recovery: runs ma_test1 and ma_test2 (both only with
INSERTs and DELETEs; UPDATEs disabled as not handled by recovery)
then moves the tables elswhere; recreates tables from the log, and
compares and fails if there is a difference. Passes now.
Most of maria_read_log.c moved to ma_recovery.c, as it will be re-used
for recovery-from-ha_maria.
Bugfixes of applying of REDO_INSERT, REDO_PURGE_ROW.
Applying of REDO_PURGE_BLOCKS, REDO_DELETE_ALL, REDO_DROP_TABLE,
UNDO_ROW_INSERT (in REDO phase only, i.e. just doing records++),
UNDO_ROW_DELETE, UNDO_ROW_PURGE.
Code cleanups.
Monty: please look for "QQ". Sanja: please look for "Sanja".
Future tasks: recovery of the bitmap (easy), recovery of the state
(make it idempotent), more REDOs (Monty to work on
REDO_UPDATE?), UNDO phase...
Pushing this cset as it looks safe, contains test and bugfixes which
will help Monty implement applying of REDO_UPDATE.


sql/handler.cc:
  typo
storage/maria/Makefile.am:
  Adding ma_test_recovery (which ma_test_all invokes, and which can
  also be run alone). Most of maria_read_log.c moved to ma_recovery.c
storage/maria/ha_maria.cc:
  comments
storage/maria/ma_bitmap.c:
  fixing comments. 2 -> sizeof(maria_bitmap_marker).
  Bitmap-related part of _ma_initialize_datafile() moves in bitmap module.
  Now putting the "bm" signature when creating the first bitmap page
  (it used to happen only at next open, but that
  caused an annoying difference when testing Recovery if the original
  run didn't open the table, and it looks more
  logical like this: it goes to disk only with its signature correct);
  see the "QQ" comment towards the _ma_initialize_data_file() call
  in ma_create.c for more).
  When reading a bitmap page, verify its signature (happens when normally
  using the table or when CHECKing it; not when REPAIRing it).
storage/maria/ma_blockrec.c:
  * no need to sync the data file if table is not transactional
  * Comments, code cleanup (log-related data moved to log-related code
  block, int5store->page_store).
  * Store the table's short id into LOGREC_UNDO_ROW_PURGE, like we
  do for other records (though this record will soon be replaced
  with a CLR).
  * If "page" is 1 it means the page which extends from byte
  page*block_size+1 to (page+1)*block_size (byte number 1 being
  the first byte of the file). The last byte of the file is
  data_file_length (same convention).
  A new page needs to be created if the last byte of the page is
  beyond the last byte of the file, i.e.
   (page+1)*block_size+1 > data_file_length, so we correct the test
  (bug found when testing log applying for ma_test1 -M -T --skip-update).
  * update the page's LSN when removing a row from it during
  execution of a REDO_PURGE_ROW record (bug found when testing log
  applying for ma_test1 -M -T --skip-update).
  * applying of REDO_PURGE_BLOCKs (limited to a one-page range for now).
storage/maria/ma_blockrec.h:
  new functions. maria_bitmap_marker does not need to be exported.
storage/maria/ma_close.c:
  we can always flush the table's state when closing the last instance
  of the table. And it is needed for maria_read_log (as it does
  not use maria_lock_database()).
storage/maria/ma_control_file.c:
  when in Recovery, some assertions should not be used.
storage/maria/ma_control_file.h:
  double-inclusion safe
storage/maria/ma_create.c:
  during recovery, don't log records. Comments.
  Moving the creation of the first bitmap page to ma_bitmap.c
storage/maria/ma_delete_table.c:
  during recovery, don't log records. Log the end-zero of the dropped
  table's name, so that recovery can use the string in place without
  extending it to fit an end zero.
storage/maria/ma_loghandler.c:
  * inwrite_rec_hook also needs access to the MARIA_SHARE, like
  prewrite_rec_hook. This will be needed to update
  share->records_diff (in the upcoming patch "recovery of the state").
  * LOG_DESC::record_ends_group changed to an enum.
  * LOG_DESC for LOGREC_REDO_PURGE_BLOCKS and LOGREC_UNDO_ROW_PURGE
  corrected
  * Sanja please see the @todo LOG BUG
  * avoiding DBUG_RETURN(func()) as it gives confusing debug traces.
storage/maria/ma_loghandler.h:
  - log write hooks called while the log's lock is held (inwrite_rec_hook)
  now need the MARIA_SHARE, like prewrite_rec_hook already had
  - instead of a bool saying if this record's type ends groups or not,
  we refine: it may not end a group, it may end a group, or it may
  be a group in itself. Imagine that we had a physical write failure
  to a table before we log the UNDO, we still end up in
  external_lock(F_UNLCK) and then we log a COMMIT: we don't want
  to consider this COMMIT as ending the group of REDOs (don't want
  to execute those REDOs during Recovery), that's why we say "COMMIT
  is a group in itself, it aborts any previous group". This also
  gives one more sanity check in maria_read_log.
storage/maria/ma_recovery.c:
  New Recovery code, replacing the old pseudocode.
  Most of maria_read_log moved here.
  Call-able from ha_maria, but not enabled yet.
  Compared to the previous version of maria_read_log, some bugs have
  been fixed, debugging output can go to stdout or a disk file (for now
  it's useful for me, later it can be changed), execution of
  REDO_DROP_TABLE, REDO_DELETE_ALL, REDO_PURGE_BLOCKS has been added. Duplicate code
  has been factored into functions. We abort an unfinished group
  of records if we see a record which is a group in itself (like COMMIT).
  No need for maria_panic() after a bug (which caused tables to not
  be closed) was fixed; if there is yet another bug I prefer to see it.
  When opening a table for Recovery, set data_file_length
  and key_file_length to their real physical value (these are the
  easiest state members to restore :). Warn us if the last page
  was truncated (but Recovery handles it).
  MARIA_SHARE::state::state::records is now partly recovered (not
  idempotent, but works if recreating tables from scracth).
  When applying a REDO to a page, stamp it with the UNDO's LSN
  (current_group_end_lsn), not with the REDO's LSN; it makes
  the table more identical to the original table (easier to compare
  the two tables in the end).
  Big thing missing: some types of REDOs are not handled,
  and the UNDO phase does not exist (missing functions to execute UNDOs
  to actually rollback). So for now tests are only inserting/deleting
  a few 100 rows, closing the table and seeing if the log is applied ok;
  it works. UPDATE not handled.
storage/maria/ma_recovery.h:
  new functions: ma_recover() for recovery from inside ha_maria;
  _ma_apply_log() for maria_read_log (ma_recover() calls _ma_apply_log()).
  Btw, we need to not use the word "recover" for REPAIR/maria_chk anymore.
storage/maria/ma_rename.c:
  don't write log records during recovery
storage/maria/ma_test2.c:
  - fail if maria_info() or other subtests find some wrong information
  - new option -g to skip updates.
  - init the translog before creating the table, so that log applying
  can work.
  - in "#if 0" you'll see some fixed bugs (will be removed).
storage/maria/ma_test_all.sh:
  cleanup files. Test log applying.
storage/maria/maria_read_log.c:
  most of the logic moves to ma_recovery.c to be shared between
  maria_read_log and recovery-from-inside-mysqld.
  See ma_recovery.c for additional changes made to the moved code.
storage/maria/ma_test_recovery:
  unit test for Recovery. Tests insert and delete,
  REDO_UPDATE not yet coded.
  Script is called from ma_test_all. Can run standalone.
 2007-07-26 11:56:21 +02:00
unknown
adac9798bf WL#3072 Maria Recovery 
- new program maria_read_log to display and apply log records
found in a Maria log (see file's revision comment)
- minor, misc fixes


storage/maria/Makefile.am:
  new program maria_read_log
storage/maria/ha_maria.cc:
  create control file if missing
storage/maria/ma_blockrec.c:
  0 -> LSN_IMPOSSIBLE; comments
storage/maria/ma_checkpoint.h:
  preparations for Checkpoint module
storage/maria/ma_close.c:
  comment
storage/maria/ma_control_file.c:
  renaming constants.
  Possibility to say "open control file but don't create it if it's
  missing" (used by maria_read_log which does not want to create
  anything)
storage/maria/ma_control_file.h:
  renaming constants
storage/maria/ma_create.c:
  I had duplicated "linkname" and "linkname_ptr", now I see it's not
  needed, reverting. Indeed those variables don't contain interesting
  information; fixing log record accordingly (the links are in
  ci->data/index_file_name). Storing keystart in log record is needed,
  to know at which size we must extend the file if we replay
  LOGREC_CREATE_TABLE.
storage/maria/ma_loghandler.c:
  some structures need to be known to maria_read_log.c, taking
  them to ma_loghandler.h
storage/maria/ma_loghandler.h:
  we have page_store, adding page_korr.
  translog_lock() made public, because Checkpoint will need it (to
  write to control file).
  Some structures moved from ma_loghandler.c because maria_read_log.c
  needs them (needs to know the execute-in-REDO-phase hooks of each
  record).
storage/maria/ma_loghandler_lsn.h:
  constants defined in ma_control_file.h serve everywhere,
  and they relate to LSNs, so putting them in ma_loghandler_lsn.h.
  Stronger constraints in LSN_VALID().
storage/maria/ma_pagecache.c:
  renaming constants
storage/maria/ma_recovery.h:
  copyright
storage/maria/ma_test1.c:
  new prototype
storage/maria/ma_test2.c:
  new prototype
storage/maria/trnman_public.h:
  double-inclusion safe
storage/maria/unittest/ma_control_file-t.c:
  constants renamed, new prototype
storage/maria/unittest/ma_test_loghandler-t.c:
  constants renamed, new prototype
storage/maria/unittest/ma_test_loghandler_multigroup-t.c:
  constants renamed, new prototype
storage/maria/unittest/ma_test_loghandler_multithread-t.c:
  constants renamed, new prototype
storage/maria/unittest/ma_test_loghandler_pagecache-t.c:
  constants renamed, new prototype
storage/myisam/mi_close.c:
  comment
storage/maria/maria_read_log.c:
  program to read and print log records from a Maria transaction log,
  and optionally apply them to tables. Very basic, early version.
  Should serve as a base for Recovery's code. Designed to be idempotent.
  Create a log by running maria.test, then cd to var/master-data
  and run "maria_read_log --only-display" to see info about records;
  run "maria_read_log --display-and-apply" to also apply the records
  to tables (it's more interesting if you first wipe out the
  tables in var/master-data/test, to see how they get re-created).
  Only a few records are handled by now: LONG_TRANSACTION_ID,
  COMMIT, FILE_ID, REDO_CREATE_TABLE; place is ready for
  REDO_INSERT_ROW_HEAD where I could use Monty's help (search for
  "Monty" in the file). Note: changes to the index pages, index's header
  and bitmap pages are not properly logged yet, so don't expect
  the program to work with that.
 2007-06-26 16:49:23 +02:00
unknown
46922b5125 GPL license update (same change as was done for all files in 5.1). 
storage/maria/Makefile.am:
  GPL license update
storage/maria/ft_maria.c:
  GPL license update
storage/maria/ha_maria.cc:
  GPL license update
storage/maria/ha_maria.h:
  GPL license update
storage/maria/lockman.c:
  GPL license update
storage/maria/lockman.h:
  GPL license update
storage/maria/ma_bitmap.c:
  GPL license update
storage/maria/ma_blockrec.c:
  GPL license update
storage/maria/ma_blockrec.h:
  GPL license update
storage/maria/ma_cache.c:
  GPL license update
storage/maria/ma_changed.c:
  GPL license update
storage/maria/ma_check.c:
  GPL license update
storage/maria/ma_checkpoint.c:
  GPL license update
storage/maria/ma_checkpoint.h:
  GPL license update
storage/maria/ma_checksum.c:
  GPL license update
storage/maria/ma_close.c:
  GPL license update
storage/maria/ma_control_file.c:
  GPL license update
storage/maria/ma_control_file.h:
  GPL license update
storage/maria/ma_create.c:
  GPL license update
storage/maria/ma_dbug.c:
  GPL license update
storage/maria/ma_delete.c:
  GPL license update
storage/maria/ma_delete_all.c:
  GPL license update
storage/maria/ma_delete_table.c:
  GPL license update
storage/maria/ma_dynrec.c:
  GPL license update
storage/maria/ma_extra.c:
  GPL license update
storage/maria/ma_ft_boolean_search.c:
  GPL license update
storage/maria/ma_ft_eval.c:
  GPL license update
storage/maria/ma_ft_eval.h:
  GPL license update
storage/maria/ma_ft_nlq_search.c:
  GPL license update
storage/maria/ma_ft_parser.c:
  GPL license update
storage/maria/ma_ft_stem.c:
  GPL license update
storage/maria/ma_ft_test1.c:
  GPL license update
storage/maria/ma_ft_test1.h:
  GPL license update
storage/maria/ma_ft_update.c:
  GPL license update
storage/maria/ma_ftdefs.h:
  GPL license update
storage/maria/ma_fulltext.h:
  GPL license update
storage/maria/ma_info.c:
  GPL license update
storage/maria/ma_init.c:
  GPL license update
storage/maria/ma_key.c:
  GPL license update
storage/maria/ma_keycache.c:
  GPL license update
storage/maria/ma_least_recently_dirtied.c:
  GPL license update
storage/maria/ma_least_recently_dirtied.h:
  GPL license update
storage/maria/ma_locking.c:
  GPL license update
storage/maria/ma_open.c:
  GPL license update
storage/maria/ma_packrec.c:
  GPL license update
storage/maria/ma_page.c:
  GPL license update
storage/maria/ma_panic.c:
  GPL license update
storage/maria/ma_preload.c:
  GPL license update
storage/maria/ma_range.c:
  GPL license update
storage/maria/ma_recovery.c:
  GPL license update
storage/maria/ma_recovery.h:
  GPL license update
storage/maria/ma_rename.c:
  GPL license update
storage/maria/ma_rfirst.c:
  GPL license update
storage/maria/ma_rkey.c:
  GPL license update
storage/maria/ma_rlast.c:
  GPL license update
storage/maria/ma_rnext.c:
  GPL license update
storage/maria/ma_rnext_same.c:
  GPL license update
storage/maria/ma_rprev.c:
  GPL license update
storage/maria/ma_rrnd.c:
  GPL license update
storage/maria/ma_rsame.c:
  GPL license update
storage/maria/ma_rsamepos.c:
  GPL license update
storage/maria/ma_rt_index.c:
  GPL license update
storage/maria/ma_rt_index.h:
  GPL license update
storage/maria/ma_rt_key.c:
  GPL license update
storage/maria/ma_rt_key.h:
  GPL license update
storage/maria/ma_rt_mbr.c:
  GPL license update
storage/maria/ma_rt_mbr.h:
  GPL license update
storage/maria/ma_rt_split.c:
  GPL license update
storage/maria/ma_rt_test.c:
  GPL license update
storage/maria/ma_scan.c:
  GPL license update
storage/maria/ma_search.c:
  GPL license update
storage/maria/ma_sort.c:
  GPL license update
storage/maria/ma_sp_defs.h:
  GPL license update
storage/maria/ma_sp_key.c:
  GPL license update
storage/maria/ma_sp_test.c:
  GPL license update
storage/maria/ma_static.c:
  GPL license update
storage/maria/ma_statrec.c:
  GPL license update
storage/maria/ma_test1.c:
  GPL license update
storage/maria/ma_test2.c:
  GPL license update
storage/maria/ma_test3.c:
  GPL license update
storage/maria/ma_unique.c:
  GPL license update
storage/maria/ma_update.c:
  GPL license update
storage/maria/ma_write.c:
  GPL license update
storage/maria/maria_chk.c:
  GPL license update
storage/maria/maria_def.h:
  GPL license update
storage/maria/maria_ftdump.c:
  GPL license update
storage/maria/maria_pack.c:
  GPL license update
storage/maria/tablockman.c:
  GPL license update
storage/maria/tablockman.h:
  GPL license update
storage/maria/trnman.c:
  GPL license update
storage/maria/trnman.h:
  GPL license update
 2007-03-02 11:20:23 +01:00
unknown
cdf831cf94 WL#3071 Maria checkpoint: 
changing pseudocode to use the structures of the Maria pagecache
    ("pagecache->changed_blocks" etc) and other Maria structures
    inherited from MyISAM (THR_LOCK_maria etc).


mysys/mf_pagecache.c:
  comment
storage/maria/ma_checkpoint.c:
  changing pseudocode to use the structures of the Maria pagecache
  ("pagecache->changed_blocks" etc) and other Maria structures
  inherited from MyISAM (THR_LOCK_maria etc).
storage/maria/ma_checkpoint.h:
  copyright
storage/maria/ma_control_file.c:
  copyright
storage/maria/ma_control_file.h:
  copyright
storage/maria/ma_least_recently_dirtied.c:
  copyright
storage/maria/ma_least_recently_dirtied.h:
  copyright
storage/maria/ma_recovery.c:
  copyright
storage/maria/ma_recovery.h:
  copyright
storage/maria/unittest/Makefile.am:
  copyright
 2006-09-14 19:06:51 +02:00
unknown
a1f25544d5 WL#3234 "Maria - control file manager" 
- fixes to the control file module
- unit test for it
- renames of all Maria files I created to start with ma_


storage/maria/ma_checkpoint.c:
  Rename: storage/maria/checkpoint.c -> storage/maria/ma_checkpoint.c
storage/maria/ma_checkpoint.h:
  Rename: storage/maria/checkpoint.h -> storage/maria/ma_checkpoint.h
storage/maria/ma_least_recently_dirtied.c:
  Rename: storage/maria/least_recently_dirtied.c -> storage/maria/ma_least_recently_dirtied.c
storage/maria/ma_least_recently_dirtied.h:
  Rename: storage/maria/least_recently_dirtied.h -> storage/maria/ma_least_recently_dirtied.h
storage/maria/ma_recovery.c:
  Rename: storage/maria/recovery.c -> storage/maria/ma_recovery.c
storage/maria/ma_recovery.h:
  Rename: storage/maria/recovery.h -> storage/maria/ma_recovery.h
storage/maria/Makefile.am:
  control file module and its unit test program
storage/maria/ma_control_file.c:
  DBUG_ tags. Fix for gcc warnings.
  log_no -> logno (I felt "_no" sounded like a standalone "No" word).
  ma_ prefix for some functions.
  last_checkpoint_lsn_at_startup -> last_checkpoint_lsn (no need
  to make special vars for the values at startup). Same for last_logno.
  ma_control_file_write_and_force() now updates last_checkpoint_lsn
  and last_logno, the idea being that they belong to the module,
  others should not update them.
  And thus when the module shuts down, it zeroes those vars.
storage/maria/ma_control_file.h:
  importing structs from Sanja to get the control file module to compile;
  we'll remove that when Sanja pushes the log handler.
  CONTROL_FILE_IMPOSSIBLE_LOGNO is 0, not FFFFFFFF.
storage/maria/ma_control_file_test.c:
  Unit test program for the Maria control file module.
  Modelled after other ma_test* files in this directory (so, does
  not follow the unit test framework recently introduced with libtap;
  TODO as a task on all ma_test* programs).
  We test that writing to the control file works, and re-reading from it
  too, we check (by reading the file by ourselves) that its content
  on disk is correct, and check that a corrupted control file is detected.
 2006-09-01 17:53:10 +02:00
Renamed from storage/maria/recovery.h (Browse further)