xtrabackup: error: log block numbers mismatch

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

Please let me know if you need any further details to investgate the issue.

Thank you and best regards

You should file this as a bug on launchpad.