tests/generic/003

   1 #! /bin/bash
   2 # SPDX-License-Identifier: GPL-2.0
   3 # Copyright (c) 2014, Oracle and/or its affiliates.  All Rights Reserved.
   4 #
   5 # FS QA Test No. generic/003
   6 #
   7 # Tests the noatime, relatime, strictatime and nodiratime mount options.
   8 # There is an extra check for Btrfs to ensure that the access time is
   9 # never updated on read-only subvolumes. (Regression test for bug fixed
  10 # with commit 93fd63c2f001ca6797c6b15b696a484b165b4800)
  11 #
  12 seq=`basename $0`
  13 seqres=$RESULT_DIR/$seq
  14 echo "QA output created by $seq"
  15
  16 here=`pwd`
  17 tmp=/tmp/$$
  18 status=1        # failure is the default!
  19 trap "_cleanup; exit \$status" 0 1 2 3 15
  20
  21 _cleanup()
  22 {
  23     cd /
  24     rm -rf $tmp.*
  25 }
  26
  27 # get standard environment, filters and checks
  28 . ./common/rc
  29 . ./common/filter
  30
  31 # real QA test starts here
  32
  33 _supported_fs generic
  34 _require_scratch
  35 _require_atime
  36 _require_relatime
  37
  38 rm -f $seqres.full
  39
  40 _stat() {
  41         stat -c "%x;%y;%z" $1
  42 }
  43
  44 _compare_stat_times() {
  45         updated=$1      # 3 chars indicating if access, modify and
  46                         # change times should be updated (Y) or not (N)
  47         IFS=';' read -a first_stat <<< "$2"   # Convert first stat to array
  48         IFS=';' read -a second_stat <<< "$3"  # Convert second stat to array
  49         test_step=$4    # Will be printed to output stream in case of an
  50                         # error, to make debugging easier
  51         types=( access modify change )
  52
  53         for i in 0 1 2; do
  54                 if [ "${first_stat[$i]}" == "${second_stat[$i]}" ]; then
  55                         if [ "${updated:$i:1}" == "N" ]; then
  56                                 continue;
  57                         fi
  58                         echo -n "ERROR: ${types[$i]} time has not been updated "
  59                         echo $test_step
  60                 elif [ "${updated:$i:1}" == "N" ]; then
  61                         echo -n "ERROR: ${types[$i]} time has changed "
  62                         echo $test_step
  63                 fi
  64         done
  65 }
  66
  67 _scratch_mkfs >> $seqres.full 2>&1 || _fail "mkfs failed"
  68 _scratch_mount "-o relatime"
  69
  70 if [ "$FSTYP" = "btrfs" ]; then
  71         TPATH=$SCRATCH_MNT/sub1
  72         $BTRFS_UTIL_PROG subvolume create $TPATH > $seqres.full
  73 else
  74         TPATH=$SCRATCH_MNT
  75 fi
  76
  77 mkdir $TPATH/dir1
  78 echo "aaa" > $TPATH/dir1/file1
  79 file1_stat_before_first_access=`_stat $TPATH/dir1/file1`
  80
  81 # Accessing file1 the first time
  82 sleep 1
  83 cat $TPATH/dir1/file1 > /dev/null
  84 file1_stat_after_first_access=`_stat $TPATH/dir1/file1`
  85 _compare_stat_times YNN "$file1_stat_before_first_access" \
  86         "$file1_stat_after_first_access" "after accessing file1 first time"
  87
  88 # Accessing file1 a second time
  89 sleep 1
  90 cat $TPATH/dir1/file1 > /dev/null
  91 file1_stat_after_second_access=`_stat $TPATH/dir1/file1`
  92 _compare_stat_times NNN "$file1_stat_after_first_access" \
  93         "$file1_stat_after_second_access" "after accessing file1 second time"
  94
  95 # Mounting with nodiratime option
  96 _scratch_cycle_mount "nodiratime"
  97 file1_stat_after_remount=`_stat $TPATH/dir1/file1`
  98 _compare_stat_times NNN "$file1_stat_after_second_access" \
  99         "$file1_stat_after_remount" "for file1 after remount"
 100
 101 # Creating dir2 and file2, checking directory stats
 102 mkdir $TPATH/dir2
 103 dir2_stat_before_file_creation=`_stat $TPATH/dir2`
 104 sleep 1
 105 echo "bbb" > $TPATH/dir2/file2
 106 dir2_stat_after_file_creation=`_stat $TPATH/dir2`
 107 _compare_stat_times NYY "$dir2_stat_before_file_creation" \
 108         "$dir2_stat_after_file_creation" "for dir2 after file creation"
 109
 110 # Accessing file2
 111 file2_stat_before_first_access=`_stat $TPATH/dir2/file2`
 112 sleep 1
 113 cat $TPATH/dir2/file2 > /dev/null
 114 file2_stat_after_first_access=`_stat $TPATH/dir2/file2`
 115 _compare_stat_times YNN "$file2_stat_before_first_access" \
 116         "$file2_stat_after_first_access" "after accessing file2"
 117 dir2_stat_after_file_access=`_stat $TPATH/dir2`
 118 _compare_stat_times NNN "$dir2_stat_after_file_creation" \
 119         "$dir2_stat_after_file_access" "for dir2 after file access"
 120
 121 # Mounting with noatime option, creating a file and accessing it
 122 _scratch_cycle_mount "noatime"
 123 echo "ccc" > $TPATH/dir2/file3
 124 file3_stat_before_first_access=`_stat $TPATH/dir2/file3`
 125 sleep 1
 126 cat $TPATH/dir2/file3 > /dev/null
 127 file3_stat_after_first_access=`_stat $TPATH/dir2/file3`
 128 _compare_stat_times NNN "$file3_stat_before_first_access" \
 129         "$file3_stat_after_first_access" "after accessing file3 first time"
 130
 131 # Checking that the modify and change times are still updated
 132 file1_stat_before_modify=`_stat $TPATH/dir1/file1`
 133 sleep 1
 134 echo "xyz" > $TPATH/dir1/file1
 135 file1_stat_after_modify=`_stat $TPATH/dir1/file1`
 136 _compare_stat_times NYY "$file1_stat_before_modify" \
 137         "$file1_stat_after_modify" "after modifying file1"
 138 sleep 1
 139 mv $TPATH/dir1/file1 $TPATH/dir1/file1_renamed
 140 file1_stat_after_change=`_stat $TPATH/dir1/file1_renamed`
 141 _compare_stat_times NNY "$file1_stat_after_modify" \
 142         "$file1_stat_after_change" "after changing file1"
 143
 144 # Mounting with strictatime option and
 145 # accessing a previously created file twice
 146 _scratch_cycle_mount "strictatime"
 147 cat $TPATH/dir2/file3 > /dev/null
 148 file3_stat_after_second_access=`_stat $TPATH/dir2/file3`
 149 _compare_stat_times YNN "$file3_stat_after_first_access" \
 150         "$file3_stat_after_second_access" "after accessing file3 second time"
 151 sleep 1
 152 cat $TPATH/dir2/file3 > /dev/null
 153 file3_stat_after_third_access=`_stat $TPATH/dir2/file3`
 154 _compare_stat_times YNN "$file3_stat_after_second_access" \
 155         "$file3_stat_after_third_access" "after accessing file3 third time"
 156
 157 # Btrfs only: Creating readonly snapshot. Access time should never
 158 # be updated, even when the strictatime mount option is active
 159 if [ "$FSTYP" = "btrfs" ]; then
 160         SPATH=$SCRATCH_MNT/snap1
 161         btrfs subvol snapshot -r $TPATH $SPATH >> $seqres.full
 162         dir2_stat_readonly_before_access=`_stat $SPATH/dir2`
 163         sleep 1
 164         ls $SPATH/dir2 >> $seqres.full
 165         cat $SPATH/dir2/file3 >> $seqres.full
 166         dir2_stat_readonly_after_access=`_stat $SPATH/dir2`
 167         _compare_stat_times NNN "$dir2_stat_readonly_before_access" \
 168                 "$dir2_stat_readonly_after_access" "for dir in readonly subvol"
 169         file3_stat_readonly_after_access=`_stat $SPATH/dir2/file3`
 170         _compare_stat_times NNN "$file3_stat_after_third_access" \
 171                 "$file3_stat_readonly_after_access" "for file in readonly subvol"
 172 fi
 173
 174 # Mounting read-only. Access time should never be updated, despite the
 175 # strictatime mount option.
 176 sleep 1
 177 dir2_stat_before_ro_mount=`_stat $TPATH/dir2`
 178 file3_stat_before_ro_mount=`_stat $TPATH/dir2/file3`
 179 _scratch_cycle_mount "ro,strictatime"
 180 ls $TPATH/dir2 > /dev/null
 181 cat $TPATH/dir2/file3 > /dev/null
 182 dir2_stat_after_ro_mount=`_stat $TPATH/dir2`
 183 _compare_stat_times NNN "$dir2_stat_before_ro_mount" \
 184         "$dir2_stat_after_ro_mount" "for dir in read-only filesystem"
 185 file3_stat_after_ro_mount=`_stat $TPATH/dir2/file3`
 186 _compare_stat_times NNN "$file3_stat_before_ro_mount" \
 187         "$file3_stat_after_ro_mount" "for file in read-only filesystem"
 188
 189 # success, all done
 190 _scratch_unmount
 191 echo "Silence is golden"
 192 status=0
 193 exit