Comment 1 for bug 977998

Problem occurs both with and without --compress options.

InnoDB Backup Utility v1.5.1-xtrabackup; Copyright 2003, 2009 Innobase Oy
and Percona Inc 2009-2012. All Rights Reserved.
[2012-04-10 12:37:33 GMT]
This software is published under
the GNU GENERAL PUBLIC LICENSE Version 2, June 1991.
[2012-04-10 12:37:33 GMT]
120410 13:37:14 innobackupex: Starting mysql with options: --password=xxxxxxxx --user='root' --unbuffered --
120410 13:37:14 innobackupex: Connected to database with mysql child process (pid=7038)
120410 13:37:20 innobackupex: Connection to database server closed
IMPORTANT: Please check that the backup run completes successfully.
           At the end of a successful backup run innobackupex
           prints "completed OK!".
[2012-04-10 12:37:33 GMT]
innobackupex: Using mysql Ver 14.12 Distrib 5.0.51a, for debian-linux-gnu (x86_64) using readline 5.2
innobackupex: Using mysql server version Copyright (C) 2002 MySQL AB
[2012-04-10 12:37:33 GMT]
innobackupex: Created backup directory /tmp/tmp.QkgecwCPry
120410 13:37:21 innobackupex: Starting mysql with options: --password=xxxxxxxx --user='root' --unbuffered --
120410 13:37:21 innobackupex: Connected to database with mysql child process (pid=7111)
120410 13:37:23 innobackupex: Connection to database server closed
[2012-04-10 12:37:33 GMT]
120410 13:37:23 innobackupex: Starting ibbackup with command: xtrabackup_51 --backup --suspend-at-end --target-dir=/tmp --stream=tar
innobackupex: Waiting for ibbackup (pid=7128) to suspend
innobackupex: Suspend file '/tmp/xtrabackup_suspended'
[2012-04-10 12:37:33 GMT]
xtrabackup_51 version 2.0.0 for MySQL server 5.1.59 unknown-linux-gnu (x86_64) (revision id: undefined)
xtrabackup: uses posix_fadvise().
xtrabackup: cd to /var/lib/mysql
xtrabackup: Target instance is assumed as followings.
xtrabackup: innodb_data_home_dir = /var/lib/mysql
xtrabackup: innodb_data_file_path = ibdata1:100M:autoextend
xtrabackup: innodb_log_group_home_dir = /var/lib/mysql
xtrabackup: innodb_log_files_in_group = 4
xtrabackup: innodb_log_file_size = 268435456
>> log scanned up to (375 4007342403)
archive_write_header() failed.
[01] xtrabackup: error: cannot open the destination stream for ibdata1
[01] xtrabackup: Error: xtrabackup_copy_datafile() failed.
[01] xtrabackup: Error: failed to copy datafile.
innobackupex: Error: ibbackup child process has died at /usr/bin/innobackupex line 371.