Comment 1 for bug 910206

For whatever reason, I seem to be seeing this as well while trying to port the test for bug810269
I have xtrabackup_55 in my PATH, but the innobackupex script seems to be searching for xtrabackup:
Doing some additional troubleshooting to see if this is me (or my repo is old), but it looks similar, so wanted to share info.

qp-xtrabackup/Percona-Server-5.5/storage/innobase/xtrabackup:qp-xtrabackup/libtar-1.2.11/libtar:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games
20111230-183007 xtrabackup_main.bug817132_test [ fail ] 36188
20111230-183007 --copy-back without explicit --ibbackup specification defaults to 'xtrabackup'. ... FAIL
20111230-183007
20111230-183007 ======================================================================
20111230-183007 FAIL: --copy-back without explicit --ibbackup specification defaults to 'xtrabackup'.
20111230-183007 ----------------------------------------------------------------------
20111230-183007 Traceback (most recent call last):
20111230-183007 File "qp-xtrabackup/kewpie/percona_tests/xtrabackup_main/bug817132_test.py", line 115, in test_bug817132
20111230-183007 self.assertEqual(retcode,0, output)
20111230-183007 AssertionError:
20111230-183007 InnoDB Backup Utility v1.5.1-xtrabackup; Copyright 2003, 2009 Innobase Oy
20111230-183007 and Percona Inc 2009-2011. All Rights Reserved.
20111230-183007
20111230-183007 This software is published under
20111230-183007 the GNU GENERAL PUBLIC LICENSE Version 2, June 1991.
20111230-183007
20111230-183007 IMPORTANT: Please check that the copy-back run completes successfully.
20111230-183007 At the end of a successful copy-back run innobackupex
20111230-183007 prints "completed OK!".
20111230-183007
20111230-183007 sh: xtrabackup: not found
20111230-183007 innobackupex: fatal error: no 'mysqld' group in MySQL options
20111230-183007 innobackupex: fatal error: OR no 'datadir' option in group 'mysqld' in MySQL options
20111230-183007
20111230-183007
20111230-183007 ----------------------------------------------------------------------
20111230-183007 Ran 1 test in 36.188s