tests/generic/050

   1 #! /bin/bash
   2 # SPDX-License-Identifier: GPL-2.0
   3 # Copyright (c) 2009 Christoph Hellwig.
   4 #
   5 # FS QA Test No. 050
   6 #
   7 # Check out various mount/remount/unmount scenarious on a read-only blockdev.
   8 #
   9 seqfull=$0
  10 seq=`basename $0`
  11 seqres=$RESULT_DIR/$seq
  12 echo "QA output created by $seq"
  13
  14 here=`pwd`
  15 tmp=/tmp/$$
  16 status=1        # failure is the default!
  17
  18 _cleanup()
  19 {
  20         cd /
  21         blockdev --setrw $SCRATCH_DEV
  22 }
  23 trap "_cleanup; exit \$status" 0 1 2 3 15
  24
  25 # get standard environment, filters and checks
  26 . ./common/rc
  27 . ./common/filter
  28
  29 # real QA test starts here
  30 _supported_fs generic
  31 _supported_os Linux
  32
  33 _require_scratch_nocheck
  34 _require_scratch_shutdown
  35 _require_local_device $SCRATCH_DEV
  36 _require_norecovery
  37
  38 # Select appropriate output file
  39 features=""
  40 if ! _has_metadata_journaling $SCRATCH_DEV >/dev/null; then
  41         features="nojournal"
  42 elif [ "$FSTYP" = "xfs" ] && echo "$MOUNT_OPTIONS" | grep -q quota ; then
  43         # Mounting with quota on XFS requires a writable fs, which means
  44         # we expect to fail the ro blockdev test with with EPERM.
  45         features="xfsquota"
  46 fi
  47 _link_out_file "$features"
  48
  49 _scratch_mkfs >/dev/null 2>&1
  50
  51 #
  52 # Mark the device read-only
  53 #
  54 echo "setting device read-only"
  55 blockdev --setro $SCRATCH_DEV
  56
  57 #
  58 # Mount it, and make sure we can't write to it, and we can unmount it again
  59 #
  60 echo "mounting read-only block device:"
  61 _try_scratch_mount 2>&1 | _filter_ro_mount | _filter_scratch
  62 if [ "${PIPESTATUS[0]}" -eq 0 ]; then
  63         echo "touching file on read-only filesystem (should fail)"
  64         touch $SCRATCH_MNT/foo 2>&1 | _filter_scratch
  65 fi
  66
  67 #
  68 # Apparently this used to be broken at some point:
  69 #       http://oss.sgi.com/bugzilla/show_bug.cgi?id=807
  70 #
  71 echo "unmounting read-only filesystem"
  72 _scratch_unmount 2>&1 | _filter_scratch | _filter_ending_dot
  73
  74 echo "setting device read-write"
  75 blockdev --setrw $SCRATCH_DEV
  76
  77 echo "mounting read-write block device:"
  78 _try_scratch_mount 2>&1 | _filter_scratch
  79
  80 echo "touch files"
  81 touch $SCRATCH_MNT/{0,1,2,3,4,5,6,7,8,9}{0,1,2,3,4,5,6,7,8,9}
  82
  83 echo "going down:"
  84 _scratch_shutdown -f
  85
  86 echo "unmounting shutdown filesystem:"
  87 _scratch_unmount 2>&1 | _filter_scratch
  88
  89 echo "setting device read-only"
  90 blockdev --setro $SCRATCH_DEV
  91
  92 #
  93 # Mounting a filesystem that requires log-recovery fails unless
  94 # -o norecovery is used.
  95 #
  96 echo "mounting filesystem that needs recovery on a read-only device:"
  97 _try_scratch_mount 2>&1 | _filter_ro_mount | _filter_scratch
  98
  99 echo "unmounting read-only filesystem"
 100 _scratch_unmount 2>&1 | _filter_scratch | _filter_ending_dot
 101
 102 #
 103 # This is the way out if the underlying device really is read-only.
 104 # Doesn't mean it's a good idea in practice, more a last resort
 105 # data recovery hack.
 106 #
 107 echo "mounting filesystem with -o norecovery on a read-only device:"
 108 _try_scratch_mount -o norecovery 2>&1 | _filter_ro_mount | _filter_scratch
 109 echo "unmounting read-only filesystem"
 110 _scratch_unmount 2>&1 | _filter_scratch | _filter_ending_dot
 111
 112 echo "setting device read-write"
 113 blockdev --setrw $SCRATCH_DEV
 114
 115 #
 116 # But log recovery is performed when mount with -o ro as long as
 117 # the underlying device is not write protected.
 118 #
 119 echo "mounting filesystem that needs recovery with -o ro:"
 120 _try_scratch_mount -o ro 2>&1 | _filter_scratch
 121
 122 # success, all done
 123 echo "*** done"
 124 rm -f $seqres.full
 125 status=0