InnoDB Backup Utility v1.5.1-xtrabackup; Copyright 2003, 2009 Innobase Oy and Percona LLC and/or its affiliates 2009-2013. All Rights Reserved. This software is published under the GNU GENERAL PUBLIC LICENSE Version 2, June 1991. IMPORTANT: Please check that the apply-log run completes successfully. At the end of a successful apply-log run innobackupex prints "completed OK!". 140921 22:06:43 innobackupex: Starting ibbackup with command: xtrabackup --defaults-file="/home/dbennett/work/2/Percona-XtraDB-Cluster-5.6.20-rel68.0-25.7.886.Linux.x86_64/percona-xtradb-cluster-tests/var/w1/var901/my.cnf" --defaults-group="mysqld" --prepare --target-dir=/home/dbennett/work/2/Percona-XtraDB-Cluster-5.6.20-rel68.0-25.7.886.Linux.x86_64/percona-xtradb-cluster-tests/var/w1/var901/data --tmpdir=/home/dbennett/work/2/Percona-XtraDB-Cluster-5.6.20-rel68.0-25.7.886.Linux.x86_64/percona-xtradb-cluster-tests/var/w1/var901/tmp --rebuild-indexes --rebuild-threads=12 xtrabackup version 2.2.4 based on MySQL server 5.6.20 Linux (x86_64) (revision id: 5023) xtrabackup: cd to /home/dbennett/work/2/Percona-XtraDB-Cluster-5.6.20-rel68.0-25.7.886.Linux.x86_64/percona-xtradb-cluster-tests/var/w1/var901/data xtrabackup: This target seems to be not prepared yet. xtrabackup: xtrabackup_logfile detected: size=2097152, start_lsn=(2135295) xtrabackup: using the following InnoDB configuration for recovery: xtrabackup: innodb_data_home_dir = ./ xtrabackup: innodb_data_file_path = ibdata1:10M:autoextend xtrabackup: innodb_log_group_home_dir = ./ xtrabackup: innodb_log_files_in_group = 1 xtrabackup: innodb_log_file_size = 2097152 Starting to expand compacted .ibd files. Expanding ./sbtest/sbtest1.ibd Expanding ./mysql/innodb_index_stats.ibd Expanding ./mysql/innodb_table_stats.ibd Expanding ./mysql/slave_worker_info.ibd Expanding ./mysql/slave_master_info.ibd Expanding ./mysql/slave_relay_log_info.ibd xtrabackup: using the following InnoDB configuration for recovery: xtrabackup: innodb_data_home_dir = ./ xtrabackup: innodb_data_file_path = ibdata1:10M:autoextend xtrabackup: innodb_log_group_home_dir = ./ xtrabackup: innodb_log_files_in_group = 1 xtrabackup: innodb_log_file_size = 2097152 xtrabackup: Starting InnoDB instance for recovery. xtrabackup: Using 104857600 bytes for buffer pool (set by --use-memory parameter) InnoDB: Using atomics to ref count buffer pool pages 2014-09-21 22:06:45 7ff5083e96f0 InnoDB: !!!!!!!! UNIV_DEBUG switched on !!!!!!!!! InnoDB: The InnoDB memory heap is disabled InnoDB: Mutexes and rw_locks use GCC atomic builtins InnoDB: Memory barrier is not used InnoDB: Compressed tables use zlib 1.2.3 InnoDB: Using CPU crc32 instructions InnoDB: Initializing buffer pool, size = 100.0M InnoDB: Completed initialization of buffer pool InnoDB: Highest supported file format is Barracuda. InnoDB: Log scan progressed past the checkpoint lsn 2135295 InnoDB: Database was not shutdown normally! InnoDB: Starting crash recovery. InnoDB: Reading tablespace information from the .ibd files... InnoDB: Restoring possible half-written data pages InnoDB: from the doublewrite buffer... InnoDB: Doing recovery: scanned up to log sequence number 2462007 (17%) InnoDB: Starting an apply batch of log records to the database... InnoDB: Progress in percent: 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 InnoDB: Apply batch completed InnoDB: 128 rollback segment(s) are active. InnoDB: Waiting for purge to start Starting 12 threads to rebuild indexes. [02] Checking if there are indexes to rebuild in table mysql/innodb_index_stats (space id: 2) [01] Checking if there are indexes to rebuild in table mysql/innodb_table_stats (space id: 1) [03] Checking if there are indexes to rebuild in table mysql/slave_master_info (space id: 4) [04] Checking if there are indexes to rebuild in table mysql/slave_relay_log_info (space id: 3) [02] Checking if there are indexes to rebuild in table mysql/slave_worker_info (space id: 5) [01] Checking if there are indexes to rebuild in table sbtest/sbtest1 (space id: 6) [01] Found index k_1 [01] Rebuilding 1 index(es). 2014-09-21 22:06:46 7ff4f37fe940 InnoDB: Assertion failure in thread 140690033994048 in file ut0byte.ic line 109 InnoDB: Failing assertion: ptr InnoDB: We intentionally generate a memory trap. InnoDB: Submit a detailed bug report to http://bugs.mysql.com. InnoDB: If you get repeated assertion failures or crashes, even InnoDB: immediately after the mysqld startup, there may be InnoDB: corruption in the InnoDB tablespace. Please refer to InnoDB: http://dev.mysql.com/doc/refman/5.6/en/forcing-innodb-recovery.html InnoDB: about forcing recovery. 02:06:46 UTC - xtrabackup got signal 6 ; This could be because you hit a bug or data is corrupted. This error can also be caused by malfunctioning hardware. We will try our best to scrape up some info that will hopefully help diagnose the problem, but since we have already crashed, something is definitely wrong and this may fail. Thread pointer: 0x0 Attempting backtrace. You can use the following information to find out where mysqld died. If you see no messages after this, something went terribly wrong... stack_bottom = 0 thread_stack 0x10000 xtrabackup(my_print_stacktrace+0x32) [0xba05cd] xtrabackup(handle_fatal_signal+0x335) [0xb57021] /lib64/libpthread.so.0 [0x7ff507fd3ca0] /lib64/libc.so.6(gsignal+0x35) [0x7ff50684ffc5] /lib64/libc.so.6(abort+0x110) [0x7ff506851a70] xtrabackup [0x7708ed] xtrabackup [0x77091f] xtrabackup [0x771add] xtrabackup [0x77c7d0] xtrabackup(row_merge_build_indexes(trx_t*, dict_table_t*, dict_table_t*, bool, dict_index_t**, unsigned long const*, unsigned long, TABLE*, dtuple_t const*, unsigned long const*, unsigned long, ib_sequence_t&)+0x419) [0x77dad5] xtrabackup [0x5f2a46] xtrabackup [0x5f2d86] /lib64/libpthread.so.0 [0x7ff507fcb83d] /lib64/libc.so.6(clone+0x6d) [0x7ff5068f4fcd] Please report a bug at https://bugs.launchpad.net/percona-xtrabackup innobackupex: Error: innobackupex: ibbackup failed at /home/dbennett/work/2/percona-xtrabackup-2.2.4-Linux-x86_64/bin/innobackupex line 2619.