usr/src/test/zfs-tests/tests/functional/link_count/link_count_001.ksh

   1 #!/bin/ksh -p
   2 #
   3 # CDDL HEADER START
   4 #
   5 # The contents of this file are subject to the terms of the
   6 # Common Development and Distribution License (the "License").
   7 # You may not use this file except in compliance with the License.
   8 #
   9 # You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
  10 # or http://www.opensolaris.org/os/licensing.
  11 # See the License for the specific language governing permissions
  12 # and limitations under the License.
  13 #
  14 # When distributing Covered Code, include this CDDL HEADER in each
  15 # file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  16 # If applicable, add the following below this CDDL HEADER, with the
  17 # fields enclosed by brackets "[]" replaced with your own identifying
  18 # information: Portions Copyright [yyyy] [name of copyright owner]
  19 #
  20 # CDDL HEADER END
  21 #
  22
  23 #
  24 # Copyright 2007 Sun Microsystems, Inc.  All rights reserved.
  25 # Use is subject to license terms.
  26 #
  27
  28 #
  29 # Copyright (c) 2013, 2016 by Delphix. All rights reserved.
  30 #
  31
  32 . $STF_SUITE/include/libtest.shlib
  33
  34 #
  35 # DESCRIPTION:
  36 # Verify file link count is zero on zfs
  37 #
  38 # STRATEGY:
  39 # 1. Make sure this test executes on multi-processes system
  40 # 2. Make zero size files and remove them in the background
  41 # 3. Call the binary
  42 # 4. Make sure the files can be removed successfully
  43 #
  44
  45 verify_runnable "both"
  46
  47 log_assert "Verify file link count is zero on zfs"
  48
  49 export ITERS=10
  50 export NUMFILES=10000
  51
  52 # Detect and make sure this test must be executed on a multi-process system
  53 is_mp || log_fail "This test requires a multi-processor system."
  54
  55 log_must mkdir -p ${TESTDIR}/tmp
  56
  57 typeset -i i=0
  58 while [ $i -lt $NUMFILES ]; do
  59         (( i = i + 1 ))
  60         touch ${TESTDIR}/tmp/x$i > /dev/null 2>&1
  61 done
  62
  63 sleep 3
  64
  65 rm -f ${TESTDIR}/tmp/x* >/dev/null 2>&1
  66
  67 rm_lnkcnt_zero_file ${TESTDIR}/tmp/test$$ > /dev/null 2>&1 &
  68 PID=$!
  69 log_note "rm_lnkcnt_zero_file ${TESTDIR}/tmp/test$$ pid: $PID"
  70
  71 i=0
  72 while [ $i -lt $ITERS ]; do
  73         if ! pgrep rm_lnkcnt_zero_file > /dev/null ; then
  74                 log_note "rm_lnkcnt_zero_file completes"
  75                 break
  76         fi
  77         log_must sleep 10
  78         (( i = i + 1 ))
  79 done
  80
  81 if pgrep rm_lnkcnt_zero_file > /dev/null; then
  82         log_must kill -TERM $PID
  83         log_fail "file link count is zero"
  84 fi
  85
  86 log_must kill -TERM $PID
  87 log_must rm -f ${TESTDIR}/tmp/test$$*
  88
  89 log_pass "Verify file link count is zero on zfs"