svn commit: r287377 - user/pho/stress2/misc

[Peter Holm]

Author: pho
Date: Tue Sep  1 20:49:38 2015
New Revision: 287377
URL: https://svnweb.freebsd.org/changeset/base/287377

Log:
  Regression test added.
  
  Sponsored by:	EMC / Isilon storage division

Added:
  user/pho/stress2/misc/trim6.sh   (contents, props changed)

Added: user/pho/stress2/misc/trim6.sh
==============================================================================
--- /dev/null	00:00:00 1970	(empty, because file is newly added)
+++ user/pho/stress2/misc/trim6.sh	Tue Sep  1 20:49:38 2015	(r287377)
@@ -0,0 +1,56 @@
+#!/bin/sh
+
+#
+# Copyright (c) 2015 EMC Corp.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+# 1. Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in the
+#    documentation and/or other materials provided with the distribution.
+#
+# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+# ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+# SUCH DAMAGE.
+#
+# $FreeBSD$
+#
+
+# Test scenario for exhausting limited malloc KVA on 32bit machine, by
+# extending a file on a UFS SU volume.
+
+# Create a large file on a file system with trim enabled.
+# Watchdog timeout seen:
+# https://people.freebsd.org/~pho/stress/log/trim6.txt
+# Fixed by r287361.
+
+[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1
+
+r=`mount | grep -w soft-updates | awk '{print $1}' | while read dev; do
+	dumpfs $dev | head -20 | grep -qw trim || continue
+	df -k $dev
+done |  sort -rn +3 | head -1 | awk '{print $4, $6}'`
+[ -z "$r" ] && exit	# No trim enabled file systems found
+set $r
+free=$(($1 / 1024 / 10 * 9))	# in Mb
+max=$((128 * 1024)) # Max is 128 GB
+[ $free -gt $max ] && free=$max
+mp=$2
+image=`echo $mp/diskimage | sed s#//#/#` # fix "//" for case mp = "/"
+trap "rm -f $image" EXIT SIGINT
+
+echo "dd if=/dev/zero of=$image bs=1m count=$free"
+dd if=/dev/zero of=$image bs=1m count=$free 2>&1 |
+    egrep -v 'records|transferred'