innobackupex:Error:xtrabackup&nb…

使用innobackupex进行数据库备份,报如下错误：

innobackupex --compress --parallel=4  --user=root  --password=yoon /export/backup/

xtrabackup_56 version 2.1.9 for MySQL server 5.6.17 Linux (x86_64) (revision id: 744)

xtrabackup: uses posix_fadvise().

xtrabackup: cd to /var/lib/mysql

xtrabackup: open files limit requested 0, set to 1024

xtrabackup: using the following InnoDB configuration:

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 = 2

xtrabackup:   innodb_log_file_size = 50331648

2016-01-21 21:41:29 7f343333b720  InnoDB: Operating system error number 2 in a file operation.

InnoDB: The error means the system cannot find the path specified.

InnoDB: File ./ib_logfile0: 'open' returned OS error 71. Cannot continue operation

innobackupex: Error: The xtrabackup child process has died at /usr/bin/innobackupex line 2622.

在生产库备份没问题，在虚拟机备份就出问题！

percona说修改配置文件路径权限：

https://www.percona.com/forums/questions-discussions/percona-xtrabackup/13396-file-name-ib_logfile0-innodb-file-operation-call-open-returned-os-error-71

[root@hank-yoon mysql]# ls -ltr

total 180

-rw-r--r--.  1 root root   2496 Jul 15  2015 README

-rw-r--r--.  1 root root  17987 Jul 15  2015 COPYING

-rw-r--r--.  1 root root 104897 Jul 15  2015 INSTALL-BINARY

drwxr-xr-x.  2 root root   4096 Dec 19 18:39 docs

drwxr-xr-x.  3 root root   4096 Dec 19 18:39 include

drwxr-xr-x.  4 root root   4096 Dec 19 18:39 man

drwxr-xr-x.  3 root root   4096 Dec 19 18:39 data

drwxr-xr-x.  3 root root   4096 Dec 19 18:39 lib

drwxr-xr-x.  2 root root   4096 Dec 19 18:39 scripts

drwxr-xr-x.  2 root root   4096 Dec 19 18:39 bin

drwxr-xr-x. 10 root root   4096 Dec 19 18:39 mysql-test

drwxr-xr-x.  2 root root   4096 Dec 19 18:39 support-files

drwxr-xr-x. 28 root root   4096 Dec 19 18:39 share

drwxr-xr-x.  4 root root   4096 Dec 19 18:39 sql-bench

-rw-r--r--.  1 root root    943 Dec 19 18:39 my.cnf

drwxr-xr-x.  2 root root   4096 Dec 19 18:40 etc

[root@hank-yoon mysql]# chown -R mysql.mysql etc/     问题依旧！

报错总是提示ib_logfile0,在配置文件中ib_logfile参数是存在的：

InnoDB: File ./ib_logfile0: 'open' returned OS error 71. Cannot continue operation

重新备份指定参数文件：

[root@hank-yoon backup]# innobackupex --compress --parallel=4 --defaults-file=/export/servers/mysql/etc/my.cnf  --user=root  --password=yoon /export/backup/

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.

Get the latest version of Percona XtraBackup, documentation, and help resources:

http://www.percona.com/xb/p

160121 22:12:52  innobackupex: Connecting to MySQL server with DSN 'dbi:mysql:;mysql_read_default_file=/export/servers/mysql/etc/my.cnf;mysql_read_default_group=xtrabackup' as 'root'  (using password: YES).

160121 22:12:52  innobackupex: Connected to MySQL server

160121 22:12:52  innobackupex: Executing a version check against the server...

160121 22:12:52  innobackupex: Done.

IMPORTANT: Please check that the backup run completes successfully.

           At the end of a successful backup run innobackupex

           prints "completed OK!".

innobackupex: Using mysql server version 5.6.26-log

innobackupex: Created backup directory /export/backup/2016-01-21_22-12-52

160121 22:12:52  innobackupex: Starting ibbackup with command: xtrabackup_56  --defaults-file="/export/servers/mysql/etc/my.cnf"  --defaults-group="mysqld" --backup --suspend-at-end --target-dir=/export/backup/2016-01-21_22-12-52 --tmpdir=/export/data/mysql/tmp --compress --compress-threads=1 --parallel=4

innobackupex: Waiting for ibbackup (pid=5476) to suspend

innobackupex: Suspend file '/export/backup/2016-01-21_22-12-52/xtrabackup_suspended_2'

xtrabackup_56 version 2.1.9 for MySQL server 5.6.17 Linux (x86_64) (revision id: 744)

xtrabackup: uses posix_fadvise().

xtrabackup: cd to /export/data/mysql/data/

xtrabackup: open files limit requested 65535, set to 65535

xtrabackup: using the following InnoDB configuration:

xtrabackup:   innodb_data_home_dir = /export/data/mysql/data

xtrabackup:   innodb_data_file_path = ibdata1:2G;ibdata2:2G:autoextend

xtrabackup:   innodb_log_group_home_dir = /export/data/mysql/data

xtrabackup:   innodb_log_files_in_group = 3

xtrabackup:   innodb_log_file_size = 268435456

2016-01-21 22:12:52 7fa03bee9720 InnoDB: Using Linux native AIO

xtrabackup: using O_DIRECT

>> log scanned up to (1510934)

InnoDB: Opened 4 undo tablespaces

xtrabackup: Starting 4 threads for parallel data files transfer

[04] Compressing /export/data/mysql/data/ibdata1 to /export/backup/2016-01-21_22-12-52/ibdata1.qp

[03] Compressing /export/data/mysql/data/ibdata2 to /export/backup/2016-01-21_22-12-52/ibdata2.qp

[02] Compressing /export/data/mysql/undo/undo001 to /export/backup/2016-01-21_22-12-52/undo001.qp

[01] Compressing /export/data/mysql/undo/undo002 to /export/backup/2016-01-21_22-12-52/undo002.qp

[02]        ...done

[01]        ...done

>> log scanned up to (1510934)

[01] Compressing /export/data/mysql/undo/undo003 to /export/backup/2016-01-21_22-12-52/undo003.qp

[02] Compressing /export/data/mysql/undo/undo004 to /export/backup/2016-01-21_22-12-52/undo004.qp

[02]        ...done

[01]        ...done

[02] Compressing ./mysql/innodb_index_stats.ibd to /export/backup/2016-01-21_22-12-52/mysql/innodb_index_stats.ibd.qp

[02]        ...done

[01] Compressing ./mysql/innodb_table_stats.ibd to /export/backup/2016-01-21_22-12-52/mysql/innodb_table_stats.ibd.qp

[01]        ...done

[02] Compressing ./mysql/slave_master_info.ibd to /export/backup/2016-01-21_22-12-52/mysql/slave_master_info.ibd.qp

[02]        ...done

>> log scanned up to (1510934)

[01] Compressing ./mysql/slave_relay_log_info.ibd to /export/backup/2016-01-21_22-12-52/mysql/slave_relay_log_info.ibd.qp

[01]        ...done

[02] Compressing ./mysql/slave_worker_info.ibd to /export/backup/2016-01-21_22-12-52/mysql/slave_worker_info.ibd.qp

[02]        ...done

>> log scanned up to (1510934)

>> log scanned up to (1510934)

>> log scanned up to (1510934)

>> log scanned up to (1510934)

[04]        ...done

[03]        ...done

xtrabackup: Creating suspend file '/export/backup/2016-01-21_22-12-52/xtrabackup_suspended_2' with pid '5476'

160121 22:12:59  innobackupex: Continuing after ibbackup has suspended

160121 22:12:59  innobackupex: Starting to lock all tables...

160121 22:12:59  innobackupex: All tables locked and flushed to disk

160121 22:12:59  innobackupex: Starting to backup non-InnoDB tables and files

innobackupex: in subdirectories of '/export/data/mysql/data/'

innobackupex: Backing up files '/export/data/mysql/data//mysql/*.{frm,isl,MYD,MYI,MAD,MAI,MRG,TRG,TRN,ARM,ARZ,CSM,CSV,opt,par}' (74 files)

>> log scanned up to (1510934)

innobackupex: Backing up files '/export/data/mysql/data//performance_schema/*.{frm,isl,MYD,MYI,MAD,MAI,MRG,TRG,TRN,ARM,ARZ,CSM,CSV,opt,par}' (53 files)

160121 22:13:00  innobackupex: Finished backing up non-InnoDB tables and files

160121 22:13:00  innobackupex: Waiting for log copying to finish

xtrabackup: The latest check point (for incremental): '1510934'

xtrabackup: Stopping log copying thread.

.>> log scanned up to (1510934)

xtrabackup: Creating suspend file '/export/backup/2016-01-21_22-12-52/xtrabackup_log_copied' with pid '5476'

xtrabackup: Transaction log of lsn (1510934) to (1510934) was copied.

160121 22:13:01  innobackupex: All tables unlocked

innobackupex: Backup created in directory '/export/backup/2016-01-21_22-12-52'

innobackupex: MySQL binlog position: filename 'mysql-bin.000007', position 120

160121 22:13:01  innobackupex: Connection to database server closed

160121 22:13:01  innobackupex: completed OK!