Fix sed in trim.kshlib

Also add execute perms to trim test script.

tests/runfiles/trim.run

@@ -0,0 +1,23 @@
+#
+# This file and its contents are supplied under the terms of the
+# Common Development and Distribution License ("CDDL"), version 1.0.
+# You may only use this file in accordance with the terms of version
+# 1.0 of the CDDL.
+#
+# A full copy of the text of the CDDL should have accompanied this
+# source.  A copy of the CDDL is also available via the Internet at
+# http://www.illumos.org/license/CDDL.
+#
+
+[DEFAULT]
+pre = setup
+quiet = False
+pre_user = root
+user = root
+timeout = 600
+post_user = root
+post = cleanup
+outputdir = /var/tmp/test_results
+
+[tests/functional/trim]
+tests = ['autotrim_001_pos', 'manualtrim_001_pos']

tests/zfs-tests/tests/functional/trim/trim.kshlib

@@ -71,7 +71,7 @@ function getsizemb
 	case "$(uname)" in
 	Linux)
 		typeset rval
-		rval=$(du --block-size 1048576 -s "$1" | sed -e 's;[ <->].*;;')
+		rval=$(du --block-size 1048576 -s "$1" | awk '{print $1}')
 		echo -n "$rval"
 		;;
 	SunOS)