git: ad99f0062b34 - main - stress2: Added a new unionfs test scenario

The branch main has been updated by pho:

URL: https://cgit.FreeBSD.org/src/commit/?id=ad99f0062b34b7060381a48b89212fc3a3b3fa2e

commit ad99f0062b34b7060381a48b89212fc3a3b3fa2e
Author:     Peter Holm <pho@FreeBSD.org>
AuthorDate: 2024-07-04 07:13:39 +0000
Commit:     Peter Holm <pho@FreeBSD.org>
CommitDate: 2024-07-04 07:13:39 +0000

    stress2: Added a new unionfs test scenario
---
 tools/test/stress2/misc/unionfs19.sh | 74 ++++++++++++++++++++++++++++++++++++
 1 file changed, 74 insertions(+)

diff --git a/tools/test/stress2/misc/unionfs19.sh b/tools/test/stress2/misc/unionfs19.sh
new file mode 100755
index 000000000000..a4e31ad0857e
--- /dev/null
+++ b/tools/test/stress2/misc/unionfs19.sh
@@ -0,0 +1,74 @@
+#!/bin/sh
+
+#
+# Copyright (c) 2024 Peter Holm <pho@FreeBSD.org>
+#
+# SPDX-License-Identifier: BSD-2-Clause
+#
+
+# umount FS with memory mapped file
+# "panic: general protection fault" seen:
+# https://people.freebsd.org/~pho/stress/log/log0519.txt
+
+[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1
+
+. ../default.cfg
+
+prog=$(basename "$0" .sh)
+here=`pwd`
+log=/tmp/$prog.log
+md1=$mdstart
+md2=$((md1 + 1))
+mp1=/mnt$md1
+mp2=/mnt$md2
+
+set -e
+mdconfig -l | grep -q md$md && mdconfig -d -u $md1
+mdconfig -l | grep -q md$u2 && mdconfig -d -u $md2
+
+mdconfig -s 2g -u $md1
+newfs $newfs_flags /dev/md$md1 > /dev/null
+mdconfig -s 2g -u $md2
+newfs $newfs_flags /dev/md$md2 > /dev/null
+
+mkdir -p $mp1 $mp2
+mount /dev/md$md1 $mp1
+mount /dev/md$md2 $mp2
+mount -t unionfs -o noatime $mp1 $mp2
+mount | grep -E "$mp1|$mp2"
+set +e
+
+export RUNDIR=$mp2/stressX
+export runRUNTIME=2m
+export LOAD=70
+export mmapLOAD=100
+export TESTPROGS="testcases/mmap/mmap testcases/swap/swap"
+
+(cd ..; ./testcases/run/run $TESTPROGS > /dev/null 2>&1) & rpid=$!
+sleep 5
+
+tail -F -n 0 /var/log/messages > $log & lpid=$!
+
+start=`date +%s`
+while [ $((`date +%s` - start)) -lt 120 ]; do
+	umount -f $mp2 &&
+	    mount -t unionfs -o noatime $mp1 $mp2
+	sleep 5
+	mount | grep -q unionfs || break
+	pgrep -q mmap || break
+done
+pkill run swap mmap
+while pgrep -q swap; do pkill swap; done
+wait $rpid
+
+umount $mp2 # The unionfs mount
+umount $mp2
+umount $mp1
+
+mdconfig -d -u $md1
+mdconfig -d -u $md2
+
+kill $lpid && wait $lpid
+grep -m 1 "pager read error" $log && s=1 || s=0
+rm $log
+exit $s