# Problem with backing up docker mysql

**URL:** <https://forums.percona.com/t/problem-with-backing-up-docker-mysql/5345>\
**Category:** Percona XtraBackup\
**Created:** [January 13, 2017, 10:06am UTC](https://forums.percona.com/t/problem-with-backing-up-docker-mysql/5345 "2017-01-13T10:06:56Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Thanasis\_Tsilingiris](https://avatars.discourse-cdn.com/v4/letter/t/2acd7d/32.png) [@Thanasis\_Tsilingiris](https://forums.percona.com/u/Thanasis_Tsilingiris)\
**Post date:** [January 13, 2017, 10:06am UTC](https://forums.percona.com/t/problem-with-backing-up-docker-mysql/5345/1 "2017-01-13T10:06:56Z")

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I am trying to backup a Mysql docker container from another machine and i get the following error:

InnoDB: Operating system error number 2 in a file operation.  
InnoDB: The error means the system cannot find the path specified.  
InnoDB: File /var/lib/mysql/ib\_logfile0: ‘open’ returned OS error 71. Cannot continue operation  
InnoDB: Cannot continue operation.

It looks like a permission error but i qm pretty confident that everything is setup correctly. The data directory of the container is mapped to a folder on my pc that belongs to “mysql” user. Also inside the container all the configuration files and the data belong to mysql. I read about this bug [url][https://bugs.launchpad.net/percona-xtrabackup/+bug/1526467[/url]](https://bugs.launchpad.net/percona-xtrabackup/+bug/1526467%5B/url%5D) which is exactly my case, but upgrading to xtrabackup 2.4 did not help…

Am i missing something?