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
  32 _require_scratch_nocheck
  33 _require_scratch_shutdown
  34 _require_local_device $SCRATCH_DEV
  35 _require_norecovery
  36
  37 # Select appropriate output file
  38 features=""
  39 if ! _has_metadata_journaling $SCRATCH_DEV >/dev/null; then
  40         features="nojournal"
  41 elif [ "$FSTYP" = "xfs" ] && echo "$MOUNT_OPTIONS" | grep -q quota ; then
  42         # Mounting with quota on XFS requires a writable fs, which means
  43         # we expect to fail the ro blockdev test with with EPERM.
  44         features="xfsquota"
  45 fi
  46 _link_out_file "$features"
  47
  48 _scratch_mkfs >/dev/null 2>&1
  49
  50 #
  51 # Mark the device read-only
  52 #
  53 echo "setting device read-only"
  54 blockdev --setro $SCRATCH_DEV
  55
  56 #
  57 # Mount it, and make sure we can't write to it, and we can unmount it again
  58 #
  59 echo "mounting read-only block device:"
  60 _try_scratch_mount 2>&1 | _filter_ro_mount | _filter_scratch
  61 if [ "${PIPESTATUS[0]}" -eq 0 ]; then
  62         echo "touching file on read-only filesystem (should fail)"
  63         touch $SCRATCH_MNT/foo 2>&1 | _filter_scratch
  64 fi
  65
  66 #
  67 # Apparently this used to be broken at some point:
  68 #       http://oss.sgi.com/bugzilla/show_bug.cgi?id=807
  69 #
  70 echo "unmounting read-only filesystem"
  71 _scratch_unmount 2>&1 | _filter_scratch | _filter_ending_dot
  72
  73 echo "setting device read-write"
  74 blockdev --setrw $SCRATCH_DEV
  75
  76 echo "mounting read-write block device:"
  77 _try_scratch_mount 2>&1 | _filter_scratch
  78
  79 echo "touch files"
  80 touch $SCRATCH_MNT/{0,1,2,3,4,5,6,7,8,9}{0,1,2,3,4,5,6,7,8,9}
  81
  82 echo "going down:"
  83 _scratch_shutdown -f
  84
  85 echo "unmounting shutdown filesystem:"
  86 _scratch_unmount 2>&1 | _filter_scratch
  87
  88 echo "setting device read-only"
  89 blockdev --setro $SCRATCH_DEV
  90
  91 #
  92 # Mounting a filesystem that requires log-recovery fails unless
  93 # -o norecovery is used.
  94 #
  95 echo "mounting filesystem that needs recovery on a read-only device:"
  96 _try_scratch_mount 2>&1 | _filter_ro_mount | _filter_scratch
  97
  98 echo "unmounting read-only filesystem"
  99 _scratch_unmount 2>&1 | _filter_scratch | _filter_ending_dot
 100
 101 #
 102 # This is the way out if the underlying device really is read-only.
 103 # Doesn't mean it's a good idea in practice, more a last resort
 104 # data recovery hack.
 105 #
 106 echo "mounting filesystem with -o norecovery on a read-only device:"
 107 _try_scratch_mount -o norecovery 2>&1 | _filter_ro_mount | _filter_scratch
 108 echo "unmounting read-only filesystem"
 109 _scratch_unmount 2>&1 | _filter_scratch | _filter_ending_dot
 110
 111 echo "setting device read-write"
 112 blockdev --setrw $SCRATCH_DEV
 113
 114 #
 115 # But log recovery is performed when mount with -o ro as long as
 116 # the underlying device is not write protected.
 117 #
 118 echo "mounting filesystem that needs recovery with -o ro:"
 119 _try_scratch_mount -o ro 2>&1 | _filter_scratch
 120
 121 # success, all done
 122 echo "*** done"
 123 rm -f $seqres.full
 124 status=0