# xtrabackup: error: log block numbers mismatch **URL:** \ **Category:** Percona XtraBackup\ **Created:** [January 17, 2012, 10:05am UTC](https://forums.percona.com/t/xtrabackup-error-log-block-numbers-mismatch/2197 "2012-01-17T10:05:34Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![olegme](https://avatars.discourse-cdn.com/v4/letter/o/958977/32.png) [@olegme](https://forums.percona.com/u/olegme)\ **Post date:** [January 17, 2012, 10:05am UTC](https://forums.percona.com/t/xtrabackup-error-log-block-numbers-mismatch/2197/1 "2012-01-17T10:05:34Z")
Running innobackupex I see the following in its output: xtrabackup: error: log block numbers mismatch: xtrabackup: error: expected log block no. 91292509, but got no. 90768229 from the log file. xtrabackup: Error: xtrabackup\_copy\_logfile() failed. innobackupex continues, but at the end I see this: innobackupex: xtrabackup\_55 failed! (exit code 1) The backup may not be complete. Studying Bug #805593 I understood that one possible reason for this error message could be transaction log being wrapped around while xtrabackup works. Will much appretiate if you answer the following: 1. Is it really transaction log wrapping issue? Is there a way to find out? 2. If the above is true, how the backup logic should be build? Restart backup? Shall this go to FAQ/User Guide? 3. Is it possible to delay log wrapping till xtrabackup ends? I’m using Ubuntu Natty 11.04(2.6.38-8-server #42-Ubuntu SMP Mon Apr 11 03:49:04 UTC 2011 x86\_64 x86\_64 x86\_64 GNU/Linux) Percona Server 5.5.17-rel22.1 XTRABACKUP\_VERSION=1.6.3 Please let me know if you need any further details to investgate the issue. Thank you and best regards ---
**Author:** ![xaprb](https://avatars.discourse-cdn.com/v4/letter/x/49beb7/32.png) [@xaprb](https://forums.percona.com/u/xaprb)\ **Post date:** [January 17, 2012, 12:54pm UTC](https://forums.percona.com/t/xtrabackup-error-log-block-numbers-mismatch/2197/2 "2012-01-17T12:54:09Z")
You should file this as a bug on launchpad.