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Re: Error message on OS freebsd
Posted by: Peter Brawley
Date: August 09, 2020 12:41PM

MySQL 5.7 & 8 can't do without sys and mysql DBs.

Do you have a logical backup, eg by mysqldump, from mysql 5.7? That should get you back to a working 5.7 system.

I've seen this suggestion ...

Navigate to the datadir

Delete ib_logfile*

Move ibdata1 to a safe place

Restart mysql

If that fails, restore ibdata1 and set innodb_force_recovery=1 and try again, repeat up to 6 if failure recurs

The only reliable way I know to move from 5.7 to 8.0 is to backup 5.7, install 8.0 as a new installation, then import the 5.7 data files. If Freebsd tried to upgrade in place without warning you of the need for a backup, it did you a disservice.

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