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 $seqres.full
  39
  40 if [ "$FSTYP" = "exfat" ]; then
  41         # exfat's timestamp for access_time has double seconds granularity
  42         access_delay=2.1
  43 else
  44         access_delay=1
  45 fi
  46
  47 _stat() {
  48         stat -c "%x;%y;%z" $1
  49 }
  50
  51 _compare_stat_times() {
  52         updated=$1      # 3 chars indicating if access, modify and
  53                         # change times should be updated (Y) or not (N)
  54         IFS=';' read -a first_stat <<< "$2"   # Convert first stat to array
  55         IFS=';' read -a second_stat <<< "$3"  # Convert second stat to array
  56         test_step=$4    # Will be printed to output stream in case of an
  57                         # error, to make debugging easier
  58         types=( access modify change )
  59
  60         for i in 0 1 2; do
  61                 if [ "${first_stat[$i]}" == "${second_stat[$i]}" ]; then
  62                         if [ "${updated:$i:1}" == "N" ]; then
  63                                 continue;
  64                         fi
  65                         echo -n "ERROR: ${types[$i]} time has not been updated "
  66                         echo $test_step
  67                 elif [ "${updated:$i:1}" == "N" ]; then
  68                         echo -n "ERROR: ${types[$i]} time has changed "
  69                         echo $test_step
  70                 fi
  71         done
  72 }
  73
  74 _scratch_mkfs >> $seqres.full 2>&1 || _fail "mkfs failed"
  75 _scratch_mount "-o relatime"
  76
  77 if [ "$FSTYP" = "btrfs" ]; then
  78         TPATH=$SCRATCH_MNT/sub1
  79         $BTRFS_UTIL_PROG subvolume create $TPATH > $seqres.full
  80 else
  81         TPATH=$SCRATCH_MNT
  82 fi
  83
  84 mkdir $TPATH/dir1
  85 echo "aaa" > $TPATH/dir1/file1
  86 file1_stat_before_first_access=`_stat $TPATH/dir1/file1`
  87
  88 # Accessing file1 the first time
  89 sleep $access_delay
  90 cat $TPATH/dir1/file1 > /dev/null
  91 file1_stat_after_first_access=`_stat $TPATH/dir1/file1`
  92 _compare_stat_times YNN "$file1_stat_before_first_access" \
  93         "$file1_stat_after_first_access" "after accessing file1 first time"
  94
  95 # Accessing file1 a second time
  96 sleep $access_delay
  97 cat $TPATH/dir1/file1 > /dev/null
  98 file1_stat_after_second_access=`_stat $TPATH/dir1/file1`
  99 _compare_stat_times NNN "$file1_stat_after_first_access" \
 100         "$file1_stat_after_second_access" "after accessing file1 second time"
 101
 102 # Mounting with nodiratime option
 103 _scratch_cycle_mount "nodiratime"
 104 file1_stat_after_remount=`_stat $TPATH/dir1/file1`
 105 _compare_stat_times NNN "$file1_stat_after_second_access" \
 106         "$file1_stat_after_remount" "for file1 after remount"
 107
 108 # Creating dir2 and file2, checking directory stats
 109 mkdir $TPATH/dir2
 110 dir2_stat_before_file_creation=`_stat $TPATH/dir2`
 111 sleep 1
 112 echo "bbb" > $TPATH/dir2/file2
 113 dir2_stat_after_file_creation=`_stat $TPATH/dir2`
 114 _compare_stat_times NYY "$dir2_stat_before_file_creation" \
 115         "$dir2_stat_after_file_creation" "for dir2 after file creation"
 116
 117 # Accessing file2
 118 file2_stat_before_first_access=`_stat $TPATH/dir2/file2`
 119 sleep $access_delay
 120 cat $TPATH/dir2/file2 > /dev/null
 121 file2_stat_after_first_access=`_stat $TPATH/dir2/file2`
 122 _compare_stat_times YNN "$file2_stat_before_first_access" \
 123         "$file2_stat_after_first_access" "after accessing file2"
 124 dir2_stat_after_file_access=`_stat $TPATH/dir2`
 125 _compare_stat_times NNN "$dir2_stat_after_file_creation" \
 126         "$dir2_stat_after_file_access" "for dir2 after file access"
 127
 128 # Mounting with noatime option, creating a file and accessing it
 129 _scratch_cycle_mount "noatime"
 130 echo "ccc" > $TPATH/dir2/file3
 131 file3_stat_before_first_access=`_stat $TPATH/dir2/file3`
 132 sleep 1
 133 cat $TPATH/dir2/file3 > /dev/null
 134 file3_stat_after_first_access=`_stat $TPATH/dir2/file3`
 135 _compare_stat_times NNN "$file3_stat_before_first_access" \
 136         "$file3_stat_after_first_access" "after accessing file3 first time"
 137
 138 # Checking that the modify and change times are still updated
 139 file1_stat_before_modify=`_stat $TPATH/dir1/file1`
 140 sleep 1
 141 echo "xyz" > $TPATH/dir1/file1
 142 file1_stat_after_modify=`_stat $TPATH/dir1/file1`
 143 _compare_stat_times NYY "$file1_stat_before_modify" \
 144         "$file1_stat_after_modify" "after modifying file1"
 145
 146 # exfat does not support last metadata change timestamp
 147 if [ "$FSTYP" != "exfat" ]; then
 148         sleep 1
 149         mv $TPATH/dir1/file1 $TPATH/dir1/file1_renamed
 150         file1_stat_after_change=`_stat $TPATH/dir1/file1_renamed`
 151         _compare_stat_times NNY "$file1_stat_after_modify" \
 152                 "$file1_stat_after_change" "after changing file1"
 153 fi
 154
 155 # Mounting with strictatime option and
 156 # accessing a previously created file twice
 157 _scratch_cycle_mount "strictatime"
 158 cat $TPATH/dir2/file3 > /dev/null
 159 file3_stat_after_second_access=`_stat $TPATH/dir2/file3`
 160 _compare_stat_times YNN "$file3_stat_after_first_access" \
 161         "$file3_stat_after_second_access" "after accessing file3 second time"
 162 sleep $access_delay
 163 cat $TPATH/dir2/file3 > /dev/null
 164 file3_stat_after_third_access=`_stat $TPATH/dir2/file3`
 165 _compare_stat_times YNN "$file3_stat_after_second_access" \
 166         "$file3_stat_after_third_access" "after accessing file3 third time"
 167
 168 # Btrfs only: Creating readonly snapshot. Access time should never
 169 # be updated, even when the strictatime mount option is active
 170 if [ "$FSTYP" = "btrfs" ]; then
 171         SPATH=$SCRATCH_MNT/snap1
 172         btrfs subvol snapshot -r $TPATH $SPATH >> $seqres.full
 173         dir2_stat_readonly_before_access=`_stat $SPATH/dir2`
 174         sleep 1
 175         ls $SPATH/dir2 >> $seqres.full
 176         cat $SPATH/dir2/file3 >> $seqres.full
 177         dir2_stat_readonly_after_access=`_stat $SPATH/dir2`
 178         _compare_stat_times NNN "$dir2_stat_readonly_before_access" \
 179                 "$dir2_stat_readonly_after_access" "for dir in readonly subvol"
 180         file3_stat_readonly_after_access=`_stat $SPATH/dir2/file3`
 181         _compare_stat_times NNN "$file3_stat_after_third_access" \
 182                 "$file3_stat_readonly_after_access" "for file in readonly subvol"
 183 fi
 184
 185 # Mounting read-only. Access time should never be updated, despite the
 186 # strictatime mount option.
 187 sleep 1
 188 dir2_stat_before_ro_mount=`_stat $TPATH/dir2`
 189 file3_stat_before_ro_mount=`_stat $TPATH/dir2/file3`
 190 _scratch_cycle_mount "ro,strictatime"
 191 ls $TPATH/dir2 > /dev/null
 192 cat $TPATH/dir2/file3 > /dev/null
 193 dir2_stat_after_ro_mount=`_stat $TPATH/dir2`
 194 _compare_stat_times NNN "$dir2_stat_before_ro_mount" \
 195         "$dir2_stat_after_ro_mount" "for dir in read-only filesystem"
 196 file3_stat_after_ro_mount=`_stat $TPATH/dir2/file3`
 197 _compare_stat_times NNN "$file3_stat_before_ro_mount" \
 198         "$file3_stat_after_ro_mount" "for file in read-only filesystem"
 199
 200 # success, all done
 201 _scratch_unmount
 202 echo "Silence is golden"
 203 status=0
 204 exit