Am 16.10.19 um 10:23 schrieb Gordan Bobic:
> I don't know if it is recoverable but it sounds like you missed the step
> of always needing a full, clean shutdown between upgrades with
> innodb_fast_shutdown=0. Then you can delete ib_logfile*, and upgrade.
always?
Yes.
how comes that i didn't need that for the whole past decade which means
MySQl 5.0 to MariaDB 10.3 and frankly i wouldn't expect it at all, this
is not PostgreSQL
Short of an incredible amount of luck, resulting in the ib_logfiles being completely flushed at the point of shutdown (or you having innodb_fast_shutdown=0 set in your configs), I don't have an explanation for why for you. I have never seen an upgrade from MariaDB 10.1 and earlier to MariaDB 10.2 and later work without following the described process, and I have carried out dozens of such upgrades over the last few years.
It is documented, and a simple yum update specifically refuses to upgrade the MariaDB-server package for this exact reason. You have to do a clean shutdown, manually remove the old MariaDB-server package and then install the new MariaDB-server package.