tests/fs/tmpfs/t_vnode_leak.sh

   1 # $NetBSD: t_vnode_leak.sh,v 1.6 2010/11/07 17:51:18 jmmv Exp $
   2 #
   3 # Copyright (c) 2005, 2006, 2007, 2008 The NetBSD Foundation, Inc.
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  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
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  26 #
  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 }
  37 main_body() {
  38         echo "Lowering kern.maxvnodes to 2000"
  39         sysctl kern.maxvnodes | awk '{ print $3; }' >oldvnodes
  40         atf_check -s eq:0 -o ignore -e empty sysctl -w kern.maxvnodes=2000
  41
  42         test_mount -o -s$(((4000 + 2) * 4096))
  43         echo "Creating 4000 directories"
  44         for f in $(jot 4000); do
  45                 mkdir ${f}
  46         done
  47         test_unmount
  48 }
  49 main_cleanup() {
  50         oldvnodes=$(cat oldvnodes)
  51         echo "Restoring kern.maxvnodes to ${oldvnodes}"
  52         sysctl -w kern.maxvnodes=${oldvnodes}
  53 }
  54
  55 atf_init_test_cases() {
  56         . $(atf_get_srcdir)/../h_funcs.subr
  57         . $(atf_get_srcdir)/h_funcs.subr
  58
  59         atf_add_test_case main
  60 }