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torture: Protect kvm-remote.sh directory trees from /tmp reaping

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The kvm-remote.sh script places the datestamped directory containing
all the build artifacts in the destination systems' /tmp directories,
where they accumulate runtime artifacts such as console.log.  This works,
but some systems have a habit of removing files in /tmp that have not
been recently accessed.  This commit therefore runs a simple script that
periodically accesses all files in the datestamped directory.

Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
This commit is contained in:
Paul E. McKenney 2021-06-17 17:09:39 -07:00
parent 442f99afbe
commit 5a2898f183
2 changed files with 32 additions and 1 deletions
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30
tools/testing/selftests/rcutorture/bin/kvm-remote-noreap.sh Executable file
View file

@ -0,0 +1,30 @@
#!/bin/bash
# SPDX-License-Identifier: GPL-2.0+
#
# Periodically scan a directory tree to prevent files from being reaped
# by systemd and friends on long runs.
#
# Usage: kvm-remote-noreap.sh pathname
#
# Copyright (C) 2021 Facebook, Inc.
#
# Authors: Paul E. McKenney <paulmck@kernel.org>
pathname="$1"
if test "$pathname" = ""
then
echo Usage: kvm-remote-noreap.sh pathname
exit 1
fi
if ! test -d "$pathname"
then
echo Usage: kvm-remote-noreap.sh pathname
echo " pathname must be a directory."
exit 2
fi
while test -d "$pathname"
do
find "$pathname" -type f -exec touch -c {} \; > /dev/null 2>&1
sleep 30
done

3
tools/testing/selftests/rcutorture/bin/kvm-remote.sh
View file

@ -124,10 +124,11 @@ awk < "$rundir"/scenarios -v dest="$T/bin" -v rundir="$rundir" '
n = $1;
sub(/\./, "", n);
fn = dest "/kvm-remote-" n ".sh"
print "kvm-remote-noreap.sh " rundir " &" > fn;
scenarios = "";
for (i = 2; i <= NF; i++)
scenarios = scenarios " " $i;
print "kvm-test-1-run-batch.sh" scenarios > fn;
print "kvm-test-1-run-batch.sh" scenarios >> fn;
print "sync" >> fn;
print "rm " rundir "/remote.run" >> fn;
}'