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t_vnode_leak.sh revision 1.5 
      1 # $NetBSD: t_vnode_leak.sh,v 1.5 2010/07/05 16:27:08 jmmv Exp $
      2 #
      3 # Copyright (c) 2005, 2006, 2007, 2008 The NetBSD Foundation, Inc.
      4 # All rights reserved.
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      6 # Redistribution and use in source and binary forms, with or without
      7 # modification, are permitted provided that the following conditions
      8 # are met:
      9 # 1. Redistributions of source code must retain the above copyright
     10 #    notice, this list of conditions and the following disclaimer.
     11 # 2. Redistributions in binary form must reproduce the above copyright
     12 #    notice, this list of conditions and the following disclaimer in the
     13 #    documentation and/or other materials provided with the distribution.
     14 #
     15 # THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     16 # ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     17 # TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     18 # PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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     22 # INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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     25 # POSSIBILITY OF SUCH DAMAGE.
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     27 
     28 atf_test_case main cleanup
     29 main_head() {
     30 	atf_set "descr" "Verifies that vnodes are not leaked and that" \
     31 	                "their reclaim operation works as expected: i.e.," \
     32 	                "when all free vnodes are exhausted, unused ones" \
     33 	                "have to be recycled, which is what the reclaim" \
     34 	                "operation does."
     35 	atf_set "require.user" "root"
     36 	atf_set "use.fs" "true"
     37 }
     38 main_body() {
     39 	echo "Lowering kern.maxvnodes to 2000"
     40 	sysctl kern.maxvnodes | awk '{ print $3; }' >oldvnodes
     41 	atf_check -s eq:0 -o ignore -e empty sysctl -w kern.maxvnodes=2000
     42 
     43 	test_mount -o -s$(((4000 + 2) * 4096))
     44 	echo "Creating 4000 directories"
     45 	for f in $(jot 4000); do
     46 		mkdir ${f}
     47 	done
     48 	test_unmount
     49 }
     50 main_cleanup() {
     51 	oldvnodes=$(cat oldvnodes)
     52 	echo "Restoring kern.maxvnodes to ${oldvnodes}"
     53 	sysctl -w kern.maxvnodes=${oldvnodes}
     54 }
     55 
     56 atf_init_test_cases() {
     57 	. $(atf_get_srcdir)/../h_funcs.subr
     58 	. $(atf_get_srcdir)/h_funcs.subr
     59 
     60 	atf_add_test_case main
     61 }
     62