/etc/lsb-release- feedback plugin - because it was written in 2011 and hasn't discovered /etc/os-release /sys/block/... /queue/rotational - read by InnoDB to determine if rotational (spinning rust) to enable/disable read-ahead (storage/innobase/fil/fil0fil.cc) - it continues if it can't be read /sys/devices/virtual/block/loop6/dev is read to obtain the major/minor and then follows a read on: /sys/dev/block/%u:%u/queue/physical_block_size - used to determine filesystem block size when using O_DIRECT
best if you allow all of these. /usr/share/mariadb/mariadb-test/autopkgtest.lower-test - the path is from the --basedir, this is sounding like someway the test is executed. A vardir seems a better choice to being doing the upper/lower case filesystem tests. They probably can be silently blocked.
