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MySQL server doesn't start after restore from incremental backup (mysqlbackup)
Posted by: Vitaly Karasik
Date: July 12, 2015 02:43AM

Hi,
I'm trying to use mysqlbackup's incremental backups, but recovery from incremental doesn't work for me.
Environment: RHEL 6.5, MySQL 5.6.24, MEB 3.9
Steps to reproduce:
1) backup
1.1) full backup:
mysqlbackup --backup-dir=/backups/full --backup-image=full.mbi backup-to-image --compress
1.2) incremental backup:
mysqlbackup --incremental --incremental-base=dir:/backups/full/2015-07-12_06-50-26 --incremental-backup-dir=/backups --backup-image=differential.mbi backup-to-image
2) restore:
2.1) restore from full backup:
mysqlbackup --defaults-file=/backups/full-12-07-2015/2015-07-12_06-50-26/backup-my.cnf --backup-image=full.mbi --backup-dir=/backups/full/2015-07-12_06-50-26 --datadir=/data/mysql --uncompress copy-back-and-apply-log
Result: everything is OK - I'm able to start MySQL server
2.2) applying incremental backup:
mysqlbackup --defaults-file=/backups/2015-07-12_07-14-35/backup-my.cnf --backup-image=differential.mbi --backup-dir=/backups/2015-07-12_07-14-35/ --datadir=/data/mysql --incremental copy-back-and-apply-log
Result:
- mysqlbackup status is "OK
- but MySQL server cannot start, it crashes with

2015-07-12 04:00:08 7ff5e2122700 InnoDB: Assertion failure in thread 140694036555520 in file trx0purge.cc line 699
InnoDB: Failing assertion: purge_sys->iter.trx_no <= purge_sys->rseg->last_trx_no
InnoDB: We intentionally generate a memory trap.

Any ideas?

TIA,
Vitaly

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