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recovering an innodb table from files

namhuynamhuy Member
in Help

I did not backup my database and I have to rebuilt my vps. Good thing is i still have all .frm and .ibd files in /var/lib/mysql

I tried to copy files to my newly rebuilt vps but got bunch of errors. any suggestion?

Comments

  • WSSWSS Member

    Unless you have your ib logfiles, you're basically fucked.

  • namhuynamhuy Member

    WSS said: Unless you have your ib logfiles, you're basically fucked.

    i still have those ib_logfile0, ib_logfile1, and ibdata1.

  • WSSWSS Member

    https://docs.oracle.com/cd/E17952_01/mysql-5.0-en/innodb-backup.html

  • namhuynamhuy Member

    systemctl restart mariadb.service
    Job for mariadb.service failed because the control process exited with error code. See "systemctl status mariadb.service" and "journalctl -xe" for details.

    Nov 09 14:44:49 namhuy mysqld[18126]: 2017-11-09 14:44:49 140360283191552 [ERROR] Plugin 'InnoDB' init function returned error.
    Nov 09 14:44:49 namhuy mysqld[18126]: 2017-11-09 14:44:49 140360283191552 [ERROR] Plugin 'InnoDB' registration as a STORAGE ENGINE failed.
    Nov 09 14:44:49 namhuy mysqld[18126]: 2017-11-09 14:44:49 140360283191552 [Note] Plugin 'FEEDBACK' is disabled.
    Nov 09 14:44:49 namhuy mysqld[18126]: 2017-11-09 14:44:49 140360283191552 [ERROR] Unknown/unsupported storage engine: InnoDB
    Nov 09 14:44:49 namhuy mysqld[18126]: 2017-11-09 14:44:49 140360283191552 [ERROR] Aborting
    Nov 09 14:44:54 namhuy mysqld[18126]: Error in my_thread_global_end(): 1 threads didn't exit
    Nov 09 14:44:54 namhuy systemd[1]: mariadb.service: main process exited, code=exited, status=1/FAILURE
    Nov 09 14:44:54 namhuy systemd[1]: Failed to start MariaDB database server.
    Nov 09 14:44:54 namhuy systemd[1]: Unit mariadb.service entered failed state.
    Nov 09 14:44:54 namhuy systemd[1]: mariadb.service failed.

  • rick2610rick2610 Member
    edited November 2017

    perhaps you need to set proper ownership on the files?

  • mkshmksh Member

    @namhuy said:

    [ERROR] Unknown/unsupported storage engine: InnoDB

    Not that i have the slightest clue but i'd read that as innodb support being disabled?

  • WSSWSS Member

    set error_logs and tune a little more specifically. You may have to move your ib_* files out of the way and manually build/rebuild stuff.

  • namhuynamhuy Member

    WSS said: manually build/rebuild stuff.

    this is what i need help on. i don't know how.

  • WSSWSS Member
    edited November 2017

    I've only had to deal with that twice, but they were MyISAM based, so it was significantly easier. Move the ib_logfiles out of the way after turning MySQL off, and set "innodb_force_recovery=9" in your my.cnf, and restart the service. Then dig deeper.

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