You can check the integrity of your backup using the
validate
command. The following is a
sample command for validating a backup image and the output for
the successful validation:
$ ./mysqlbackup --backup-image=/home/admin/backups/my.mbi validate
MySQL Enterprise Backup version 4.1.0 Linux-2.6.39-400.215.10.el5uek-x86_64 [2017/02/13]
Copyright (c) 2003, 2017, Oracle and/or its affiliates. All Rights Reserved.
170214 17:46:09 MAIN INFO: A thread created with Id '139996701841216'
170214 17:46:09 MAIN INFO: Starting with following command line ...
./mysqlbackup --backup-image=/home/admin/backups/my.mbi validate
170214 17:46:09 MAIN INFO:
IMPORTANT: Please check that mysqlbackup run completes successfully.
At the end of a successful 'validate' run mysqlbackup
prints "mysqlbackup completed OK!".
170214 17:46:09 MAIN INFO: Backup Image MEB version string: 4.1.0 [2017/02/13]
170214 17:46:09 MAIN INFO: MySQL server version is '5.7.17'
170214 17:46:09 MAIN INFO: Creating 14 buffers each of size 16777216.
170214 17:46:09 MAIN INFO: Validate operation starts with following threads
1 read-threads 6 process-threads
170214 17:46:09 MAIN INFO: Validating image ... /home/admin/backups/my.mbi
170214 17:46:09 PCR1 INFO: A thread created with Id '139996431771392'
170214 17:46:09 PCR2 INFO: A thread created with Id '139996423378688'
170214 17:46:09 PCR3 INFO: A thread created with Id '139996414985984'
170214 17:46:09 PCR4 INFO: A thread created with Id '139996406593280'
170214 17:46:09 PCR5 INFO: A thread created with Id '139996263982848'
170214 17:46:09 PCR6 INFO: A thread created with Id '139996398200576'
170214 17:46:09 RDR1 INFO: A thread created with Id '139996440164096'
170214 17:46:09 PCR1 INFO: Validate: [Dir]: meta
170214 17:46:10 PCR4 INFO: Validate: [Dir]: datadir/mysql
170214 17:46:10 PCR2 INFO: Validate: [Dir]: datadir/performance_schema
170214 17:46:10 PCR2 INFO: Validate: [Dir]: datadir/pets
170214 17:46:10 PCR2 INFO: Validate: [Dir]: datadir/sys
170214 17:46:10 PCR2 INFO: Validate: [Dir]: datadir/mysql
170214 17:46:10 PCR2 INFO: Validate: [Dir]: datadir/performance_schema
170214 17:46:10 PCR2 INFO: Validate: [Dir]: datadir/pets
170214 17:46:10 PCR2 INFO: Validate: [Dir]: datadir/sys
170214 17:46:10 MAIN INFO: Total files as specified in image: 297
170214 17:46:10 MAIN INFO: datadir/ibdata1 validated.
170214 17:46:10 MAIN INFO: datadir/mysql/engine_cost.ibd validated.
170214 17:46:10 MAIN INFO: datadir/mysql/gtid_executed.ibd validated.
170214 17:46:10 MAIN INFO: datadir/mysql/help_category.ibd validated.
170214 17:46:10 MAIN INFO: datadir/mysql/help_keyword.ibd validated.
170214 17:46:10 MAIN INFO: datadir/mysql/help_relation.ibd validated.
170214 17:46:10 MAIN INFO: datadir/mysql/help_topic.ibd validated.
170214 17:46:10 MAIN INFO: datadir/mysql/innodb_index_stats.ibd validated.
170214 17:46:10 MAIN INFO: datadir/mysql/innodb_table_stats.ibd validated.
170214 17:46:10 MAIN INFO: datadir/mysql/plugin.ibd validated.
170214 17:46:10 MAIN INFO: datadir/mysql/server_cost.ibd validated.
170214 17:46:10 MAIN INFO: datadir/mysql/servers.ibd validated.
170214 17:46:10 MAIN INFO: datadir/mysql/slave_master_info.ibd validated.
170214 17:46:10 MAIN INFO: datadir/mysql/slave_relay_log_info.ibd validated.
170214 17:46:10 MAIN INFO: datadir/mysql/slave_worker_info.ibd validated.
170214 17:46:10 MAIN INFO: datadir/mysql/time_zone.ibd validated.
170214 17:46:10 MAIN INFO: datadir/mysql/time_zone_leap_second.ibd validated.
170214 17:46:10 MAIN INFO: datadir/mysql/time_zone_name.ibd validated.
170214 17:46:10 MAIN INFO: datadir/mysql/time_zone_transition.ibd validated.
170214 17:46:10 MAIN INFO: datadir/mysql/time_zone_transition_type.ibd validated.
170214 17:46:10 MAIN INFO: datadir/pets/cats.ibd validated.
170214 17:46:10 MAIN INFO: datadir/sys/sys_config.ibd validated.
170214 17:46:10 MAIN INFO: Validate operation completed successfully.
170214 17:46:10 MAIN INFO: Backup Image validation successful.
170214 17:46:10 MAIN INFO: Source Image Path = /home/admin/backups/my.mbi
mysqlbackup completed OK!
Furthermore, you can also verify that your backup has been
successful by restoring the backup data on a different server
and run the MySQL daemon (mysqld) on the new
data directory. You can then execute SHOW
statements to verify the database and table structures, and
execute queries to verify further details of the database. See
Section 4.2.4, “Restoring a Database” for the basic steps for
restoring a backup, and see Chapter 5, Recovering or Restoring a Database for more
detailed instructions.
Do not try to verify a backup by using the backup directory as a data directory to start a MySQL server. This will crash the server, and might also corrupt your backup. See Appendix A, Frequently Asked Questions for MySQL Enterprise Backup for details.