Hi all, While I was debugging some core dumps resulting from xfs_repair fuzz testing, I noticed that fstests was no longer putting core dumps into the test results directory. The root cause of this turned out to be that systemd enables kernel.core_uses_pid, which changes the core pattern from "core" to "core.$pid". This is a good change since we can now capture *all* the coredumps produced by a test, but bad in that the check script doesn't know about this. Therefore, fix check to detect multiple corefiles and preserve them, and compress coredumps if desired. If you're going to start using this mess, you probably ought to just pull from my git trees, which are linked below. This is an extraordinary way to destroy everything. Enjoy! Comments and questions are, as always, welcome. --D fstests git tree: https://git.kernel.org/cgit/linux/kernel/git/djwong/xfstests-dev.git/log/?h=compress-core-dumps --- README | 1 + check | 26 ++++++++++++++++++++++---- common/rc | 29 +++++++++++++++++++++++++++++ 3 files changed, 52 insertions(+), 4 deletions(-)