look enough …
but look at this post MariaDB randomly tuned off and wont turn back on cauisng my wordpress site to fail to lod it turned out to be the deletion of 2 files in the end … It could be these files are corrupt
/var/lib/mysql/ib_logfile0
and
/var/lib/mysql/ib_logfile1
but if you do delete these files make sure you have copied the whole directory elsewhere first