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author | Marko Mäkelä <marko.makela@mariadb.com> | 2023-03-16 13:39:23 +0200 |
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committer | Marko Mäkelä <marko.makela@mariadb.com> | 2023-03-16 13:39:23 +0200 |
commit | 1495f057c8a3aa5783de0993f6f95aae3e352f7a (patch) | |
tree | 7f0537277d48a74b41d20f1ee0e82ffe178755c9 /storage | |
parent | 7d6b3d40085562d6f9f110f4ba921cf061548844 (diff) | |
download | mariadb-git-1495f057c8a3aa5783de0993f6f95aae3e352f7a.tar.gz |
MDEV-30860 Race condition between buffer pool flush and log file deletion in mariadb-backup --prepare
srv_start(): If we are going to close the log file in
mariadb-backup --prepare, call buf_flush_sync() before
calling recv_sys.debug_free() to ensure that the log file
will not be accessed.
This fixes a rather rare failure in the test
mariabackup.innodb_force_recovery where buf_flush_page_cleaner()
would invoke log_checkpoint_low() because !recv_recovery_is_on()
would hold due to the fact that recv_sys.debug_free() had
already been called. Then, the log write for the checkpoint
would fail because srv_start() had invoked log_sys.log.close_file().
Diffstat (limited to 'storage')
-rw-r--r-- | storage/innobase/srv/srv0start.cc | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/storage/innobase/srv/srv0start.cc b/storage/innobase/srv/srv0start.cc index cc2bb699fd9..44fca2c81a5 100644 --- a/storage/innobase/srv/srv0start.cc +++ b/storage/innobase/srv/srv0start.cc @@ -922,9 +922,7 @@ static lsn_t srv_prepare_to_delete_redo_log_file(bool old_exists) { DBUG_ENTER("srv_prepare_to_delete_redo_log_file"); - /* Disable checkpoints in the page cleaner. */ - ut_ad(!recv_sys.recovery_on); - recv_sys.recovery_on= true; + ut_ad(recv_sys.recovery_on); /* Clean the buffer pool. */ buf_flush_sync(); @@ -1606,10 +1604,10 @@ file_checked: } } - recv_sys.debug_free(); - if (srv_operation == SRV_OPERATION_RESTORE || srv_operation == SRV_OPERATION_RESTORE_EXPORT) { + buf_flush_sync(); + recv_sys.debug_free(); /* After applying the redo log from SRV_OPERATION_BACKUP, flush the changes to the data files and truncate or delete the log. @@ -1701,6 +1699,8 @@ file_checked: return(srv_init_abort(err)); } } + + recv_sys.debug_free(); } ut_ad(err == DB_SUCCESS); |