1 files changed, 72 insertions, 0 deletions
diff --git a/tools/test/stress2/misc/zfs19.sh b/tools/test/stress2/misc/zfs19.sh
new file mode 100755
index 000000000000..a3bb19c8be07
--- /dev/null
+++ b/tools/test/stress2/misc/zfs19.sh
@@ -0,0 +1,72 @@
+#!/bin/sh
+
+#
+# Copyright (c) 2024 Peter Holm <pho@FreeBSD.org>
+#
+# SPDX-License-Identifier: BSD-2-Clause
+#
+
+# Hunt for "vm_fault: pager read error, pid 99058 (mmap)"
+
+[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1
+kldstat -v | grep -q zfs.ko  || { kldload zfs.ko; loaded=1; } ||
+    exit 0
+
+. ../default.cfg
+
+prog=$(basename "$0" .sh)
+here=`pwd`
+log=/tmp/$prog.log
+mp1=/stress2_tank/test
+u1=$mdstart
+u2=$((u1 + 1))
+
+set -e
+mdconfig -l | grep -q md$u1 && mdconfig -d -u $u1
+mdconfig -l | grep -q md$u2 && mdconfig -d -u $u2
+
+mdconfig -s 2g -u $u1
+mdconfig -s 2g -u $u2
+
+zpool list | egrep -q "^stress2_tank" && zpool destroy stress2_tank
+[ -d /stress2_tank ] && rm -rf /stress2_tank
+zpool create stress2_tank md$u1 md$u2
+zfs create stress2_tank/test
+set +e
+
+export RUNDIR=/stress2_tank/test/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
+	zfs umount -f stress2_tank/test &&
+	    zfs mount stress2_tank/test
+	sleep 5
+	zfs list | grep -q /stress2_tank/test || break
+	pgrep -q mmap || break
+done
+pkill run swap mmap
+while pgrep -q swap; do pkill swap; done
+wait $rpid
+
+zfs umount stress2_tank/test
+zfs destroy -r stress2_tank
+zpool destroy stress2_tank
+
+mdconfig -d -u $u1
+mdconfig -d -u $u2
+[ -n "$loaded" ] && kldunload zfs.ko
+
+kill $lpid && wait $lpid
+grep -m 1 "pager read error" $log && s=1 || s=0
+rm $log
+s=0	# This is an expected behavior for zfs
+exit $s