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Type:
Bug
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Status: Done
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Priority:
Medium
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Resolution: Fixed
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Affects Version/s: None
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Fix Version/s: 8.0.7
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Component/s: None
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Labels:None
One can use non-existing arguments, and the tool won't fail:
[root@pxc-1 ~]# xtrabackup --backup --non-existent-argument --target-dir=/backups/ 180122 21:15:16 version_check Connecting to MySQL server with DSN 'dbi:mysql:;mysql_read_default_group=xtrabackup' (using password: NO). 180122 21:15:16 version_check Connected to MySQL server 180122 21:15:16 version_check Executing a version check against the server... 180122 21:15:16 version_check Done. 180122 21:15:16 Connecting to MySQL server host: localhost, user: not set, password: not set, port: not set, socket: not set Using server version 5.7.19-17-57 xtrabackup version 2.4.9 based on MySQL server 5.7.13 Linux (x86_64) (revision id: a467167cdd4) xtrabackup: uses posix_fadvise(). xtrabackup: cd to /var/lib/mysql xtrabackup: open files limit requested 0, set to 1024 xtrabackup: using the following InnoDB configuration: xtrabackup: innodb_data_home_dir = . xtrabackup: innodb_data_file_path = ibdata1:12M:autoextend xtrabackup: innodb_log_group_home_dir = ./ xtrabackup: innodb_log_files_in_group = 2 xtrabackup: innodb_log_file_size = 50331648 InnoDB: Number of pools: 1 180122 21:15:16 >> log scanned up to (13891914) xtrabackup: Generating a list of tablespaces InnoDB: Allocated tablespace ID 21 for sys/sys_config, old maximum was 0 180122 21:15:16 [01] Copying ./ibdata1 to /backups/ibdata1 180122 21:15:16 [01] ...done [output trimmed] 180122 21:15:18 Finished backing up non-InnoDB tables and files 180122 21:15:18 Executing FLUSH NO_WRITE_TO_BINLOG ENGINE LOGS... xtrabackup: The latest check point (for incremental): '13891905' xtrabackup: Stopping log copying thread. .180122 21:15:18 >> log scanned up to (13891914) 180122 21:15:18 Executing UNLOCK TABLES 180122 21:15:18 All tables unlocked 180122 21:15:18 [00] Copying ib_buffer_pool to /backups/ib_buffer_pool 180122 21:15:18 [00] ...done 180122 21:15:18 Backup created in directory '/backups/' 180122 21:15:18 [00] Writing /backups/backup-my.cnf 180122 21:15:18 [00] ...done 180122 21:15:18 [00] Writing /backups/xtrabackup_info 180122 21:15:18 [00] ...done xtrabackup: Transaction log of lsn (13891905) to (13891914) was copied. 180122 21:15:18 completed OK!
As we can see above, neither errors nor warnings were output.
Version used (current latest as of this writing):
[root@pxc-1 ~]# xtrabackup --version xtrabackup version 2.4.9 based on MySQL server 5.7.13 Linux (x86_64) (revision id: a467167cdd4)
This can create a lot of confusion, in the following scenario, for instance:
xtrabackup --backup --ddl-lock --target-dir=/backups/
The backup will complete OK, but instead of using the --lock-ddl functionality, the tool will silently go on, and the LOCK TABLES FOR BACKUP will not be used at the beginning.
