tests/generic/003

   1 #! /bin/bash
   2 # FS QA Test No. generic/003
   3 #
   4 # Tests the noatime, relatime, strictatime and nodiratime mount options.
   5 # There is an extra check for Btrfs to ensure that the access time is
   6 # never updated on read-only subvolumes. (Regression test for bug fixed
   7 # with commit 93fd63c2f001ca6797c6b15b696a484b165b4800)
   8 #
   9 #-----------------------------------------------------------------------
  10 # Copyright (c) 2014, Oracle and/or its affiliates.  All Rights Reserved.
  11 #
  12 # This program is free software; you can redistribute it and/or
  13 # modify it under the terms of the GNU General Public License as
  14 # published by the Free Software Foundation.
  15 #
  16 # This program is distributed in the hope that it would be useful,
  17 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  18 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19 # GNU General Public License for more details.
  20 #
  21 # You should have received a copy of the GNU General Public License
  22 # along with this program; if not, write the Free Software Foundation,
  23 # Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  24 #-----------------------------------------------------------------------
  25
  26 seq=`basename $0`
  27 seqres=$RESULT_DIR/$seq
  28 echo "QA output created by $seq"
  29
  30 here=`pwd`
  31 tmp=/tmp/$$
  32 status=1        # failure is the default!
  33 trap "_cleanup; exit \$status" 0 1 2 3 15
  34
  35 _cleanup()
  36 {
  37     cd /
  38     rm -rf $tmp.*
  39 }
  40
  41 # get standard environment, filters and checks
  42 . ./common/rc
  43 . ./common/filter
  44
  45 # real QA test starts here
  46
  47 _supported_fs generic
  48 _supported_os Linux
  49 _require_scratch
  50 _require_relatime
  51
  52 rm -f $seqres.full
  53
  54 _stat() {
  55         stat --printf="%x;%y;%z" $1
  56 }
  57
  58 _compare_stat_times() {
  59         updated=$1      # 3 chars indicating if access, modify and
  60                         # change times should be updated (Y) or not (N)
  61         IFS=';' read -a first_stat <<< "$2"   # Convert first stat to array
  62         IFS=';' read -a second_stat <<< "$3"  # Convert second stat to array
  63         test_step=$4    # Will be printed to output stream in case of an
  64                         # error, to make debugging easier
  65         types=( access modify change )
  66
  67         for i in 0 1 2; do
  68                 if [ "${first_stat[$i]}" == "${second_stat[$i]}" ]; then
  69                         if [ "${updated:$i:1}" == "N" ]; then
  70                                 continue;
  71                         fi
  72                         echo -n "ERROR: ${types[$i]} time has not been updated "
  73                         echo $test_step
  74                 elif [ "${updated:$i:1}" == "N" ]; then
  75                         echo -n "ERROR: ${types[$i]} time has changed "
  76                         echo $test_step
  77                 fi
  78         done
  79 }
  80
  81 _scratch_mkfs >> $seqres.full 2>&1 || _fail "mkfs failed"
  82 _scratch_mount "-o relatime"
  83
  84 if [ "$FSTYP" = "btrfs" ]; then
  85         TPATH=$SCRATCH_MNT/sub1
  86         $BTRFS_UTIL_PROG subvolume create $TPATH > $seqres.full
  87 else
  88         TPATH=$SCRATCH_MNT
  89 fi
  90
  91 mkdir $TPATH/dir1
  92 echo "aaa" > $TPATH/dir1/file1
  93 file1_stat_before_first_access=`_stat $TPATH/dir1/file1`
  94
  95 # Accessing file1 the first time
  96 sleep 1
  97 cat $TPATH/dir1/file1 > /dev/null
  98 file1_stat_after_first_access=`_stat $TPATH/dir1/file1`
  99 _compare_stat_times YNN "$file1_stat_before_first_access" \
 100         "$file1_stat_after_first_access" "after accessing file1 first time"
 101
 102 # Accessing file1 a second time
 103 sleep 1
 104 cat $TPATH/dir1/file1 > /dev/null
 105 file1_stat_after_second_access=`_stat $TPATH/dir1/file1`
 106 _compare_stat_times NNN "$file1_stat_after_first_access" \
 107         "$file1_stat_after_second_access" "after accessing file1 second time"
 108
 109 # Remounting with nodiratime option
 110 _scratch_unmount
 111 _scratch_mount "-o nodiratime"
 112 file1_stat_after_remount=`_stat $TPATH/dir1/file1`
 113 _compare_stat_times NNN "$file1_stat_after_second_access" \
 114         "$file1_stat_after_remount" "for file1 after remount"
 115
 116 # Creating dir2 and file2, checking directory stats
 117 mkdir $TPATH/dir2
 118 dir2_stat_before_file_creation=`_stat $TPATH/dir2`
 119 sleep 1
 120 echo "bbb" > $TPATH/dir2/file2
 121 dir2_stat_after_file_creation=`_stat $TPATH/dir2`
 122 _compare_stat_times NYY "$dir2_stat_before_file_creation" \
 123         "$dir2_stat_after_file_creation" "for dir2 after file creation"
 124
 125 # Accessing file2
 126 file2_stat_before_first_access=`_stat $TPATH/dir2/file2`
 127 sleep 1
 128 cat $TPATH/dir2/file2 > /dev/null
 129 file2_stat_after_first_access=`_stat $TPATH/dir2/file2`
 130 _compare_stat_times YNN "$file2_stat_before_first_access" \
 131         "$file2_stat_after_first_access" "after accessing file2"
 132 dir2_stat_after_file_access=`_stat $TPATH/dir2`
 133 _compare_stat_times NNN "$dir2_stat_after_file_creation" \
 134         "$dir2_stat_after_file_access" "for dir2 after file access"
 135
 136 # Remounting with noatime option, creating a file and accessing it
 137 _scratch_unmount
 138 _scratch_mount "-o noatime"
 139 echo "ccc" > $TPATH/dir2/file3
 140 file3_stat_before_first_access=`_stat $TPATH/dir2/file3`
 141 sleep 1
 142 cat $TPATH/dir2/file3 > /dev/null
 143 file3_stat_after_first_access=`_stat $TPATH/dir2/file3`
 144 _compare_stat_times NNN "$file3_stat_before_first_access" \
 145         "$file3_stat_after_first_access" "after accessing file3 first time"
 146
 147 # Checking that the modify and change times are still updated
 148 file1_stat_before_modify=`_stat $TPATH/dir1/file1`
 149 sleep 1
 150 echo "xyz" > $TPATH/dir1/file1
 151 file1_stat_after_modify=`_stat $TPATH/dir1/file1`
 152 _compare_stat_times NYY "$file1_stat_before_modify" \
 153         "$file1_stat_after_modify" "after modifying file1"
 154 sleep 1
 155 mv $TPATH/dir1/file1 $TPATH/dir1/file1_renamed
 156 file1_stat_after_change=`_stat $TPATH/dir1/file1_renamed`
 157 _compare_stat_times NNY "$file1_stat_after_modify" \
 158         "$file1_stat_after_change" "after changing file1"
 159
 160 # Remounting with strictatime option and
 161 # accessing a previously created file twice
 162 _scratch_unmount
 163 _scratch_mount "-o strictatime"
 164 cat $TPATH/dir2/file3 > /dev/null
 165 file3_stat_after_second_access=`_stat $TPATH/dir2/file3`
 166 _compare_stat_times YNN "$file3_stat_after_first_access" \
 167         "$file3_stat_after_second_access" "after accessing file3 second time"
 168 sleep 1
 169 cat $TPATH/dir2/file3 > /dev/null
 170 file3_stat_after_third_access=`_stat $TPATH/dir2/file3`
 171 _compare_stat_times YNN "$file3_stat_after_second_access" \
 172         "$file3_stat_after_third_access" "after accessing file3 third time"
 173
 174 # Btrfs only: Creating readonly snapshot. Access time should never
 175 # be updated, even when the strictatime mount option is active
 176 if [ "$FSTYP" = "btrfs" ]; then
 177         SPATH=$SCRATCH_MNT/snap1
 178         btrfs subvol snapshot -r $TPATH $SPATH >> $seqres.full
 179         dir2_stat_readonly_before_access=`_stat $SPATH/dir2`
 180         sleep 1
 181         ls $SPATH/dir2 >> $seqres.full
 182         cat $SPATH/dir2/file3 >> $seqres.full
 183         dir2_stat_readonly_after_access=`_stat $SPATH/dir2`
 184         _compare_stat_times NNN "$dir2_stat_readonly_before_access" \
 185                 "$dir2_stat_readonly_after_access" "for dir in readonly subvol"
 186         file3_stat_readonly_after_access=`_stat $SPATH/dir2/file3`
 187         _compare_stat_times NNN "$file3_stat_after_third_access" \
 188                 "$file3_stat_readonly_after_access" "for file in readonly subvol"
 189 fi
 190
 191 # Remounting read-only. Access time should never be updated, despite the
 192 # strictatime mount option.
 193 sleep 1
 194 dir2_stat_before_ro_mount=`_stat $TPATH/dir2`
 195 file3_stat_before_ro_mount=`_stat $TPATH/dir2/file3`
 196 _scratch_unmount
 197 _scratch_mount "-o ro,strictatime"
 198 ls $TPATH/dir2 > /dev/null
 199 cat $TPATH/dir2/file3 > /dev/null
 200 dir2_stat_after_ro_mount=`_stat $TPATH/dir2`
 201 _compare_stat_times NNN "$dir2_stat_before_ro_mount" \
 202         "$dir2_stat_after_ro_mount" "for dir in read-only filesystem"
 203 file3_stat_after_ro_mount=`_stat $TPATH/dir2/file3`
 204 _compare_stat_times NNN "$file3_stat_before_ro_mount" \
 205         "$file3_stat_after_ro_mount" "for file in read-only filesystem"
 206
 207 # success, all done
 208 _scratch_unmount
 209 echo "Silence is golden"
 210 status=0
 211 exit