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00f0c039d2
When Mariabackup gets a bad read of the first page of the system tablespace file, it would inappropriately try to apply the doublewrite buffer and write changes back to the data file (to the source file)! This is very wrong and must be prevented. The correct action would be to retry reading the system tablespace as well as any other files whose first page was read incorrectly. Fixing this was not attempted. xb_load_tablespaces(): Shorten a bogus message to be more relevant. The message can be displayed by --backup or --prepare. xtrabackup_backup_func(), os_file_write_func(): Add a missing space to a message. Datafile::restore_from_doublewrite(): Do not even attempt the operation in Mariabackup. recv_init_crash_recovery_spaces(): Do not attempt to restore the doublewrite buffer in Mariabackup (--prepare or --export), because all pages should have been copied correctly in --backup already, and because --backup should ignore the doublewrite buffer. SysTablespace::read_lsn_and_check_flags(): Do not attempt to initialize the doublewrite buffer in Mariabackup. innodb_make_page_dirty(): Correct the bounds check. Datafile::read_first_page(): Correct the name of the parameter. |
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| .. | ||
| os0event.cc | ||
| os0file.cc | ||
| os0proc.cc | ||
| os0thread.cc | ||