>From the log: 2016-12-03T09:19:21.069388Z 0 [Note] InnoDB: Loading buffer pool(s) from /var/lib/mysql/ib_buffer_pool 2016-12-03T09:19:21.069453Z 0 [ERROR] InnoDB: Cannot open '/var/lib/mysql/ib_buffer_pool' for reading: No such file or directory
>From that and all around it it appers to me that on upgrade it has to upgrade >the database to be compatible with the new version. That seemed to have failed for your custom installation/configuration/database, but I failed to find a particular reason in the logs that were submitted. I happened to find https://bugs.mysql.com/bug.php?id=73952 - a 5.6 to 5.7 change causing that depending on your ocnfig. Which might hold a workaround to fix up your system to get into a working state again. >From there everything should be fine again. ** Bug watch added: MySQL Bug System #73952 http://bugs.mysql.com/bug.php?id=73952 ** Changed in: mysql-5.7 (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1647028 Title: package mysql-server-5.7 5.7.16-0ubuntu0.16.04.1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/mysql-5.7/+bug/1647028/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs