200

   1 #! /bin/sh
   2 # FS QA Test No. 200
   3 #
   4 # Check out various mount/remount/unmount scenarious on a read-only blockdev.
   5 #
   6 #-----------------------------------------------------------------------
   7 # Copyright (c) 2009 Christoph Hellwig.
   8 #-----------------------------------------------------------------------
   9 #
  10 # creator
  11 owner=hch@lst.de
  12
  13 seq=`basename $0`
  14 echo "QA output created by $seq"
  15
  16 here=`pwd`
  17 tmp=/tmp/$$
  18 status=1        # failure is the default!
  19
  20 _filter_scratch()
  21 {
  22         sed -e "s,$SCRATCH_DEV,SCRATCH_DEV,g" | \
  23                 sed -e "s,$SCRATCH_MNT,SCRATCH_MNT,g"
  24 }
  25
  26 _cleanup()
  27 {
  28         cd /
  29         blockdev --setrw $SCRATCH_DEV
  30 }
  31 trap "_cleanup; exit \$status" 0 1 2 3 15
  32
  33 # get standard environment, filters and checks
  34 . ./common.rc
  35 . ./common.filter
  36
  37 # real QA test starts here
  38 _supported_fs xfs
  39 _supported_os Linux
  40
  41 _require_scratch
  42
  43 _scratch_mkfs_xfs >/dev/null 2>&1
  44
  45 #
  46 # Mark the device read-only
  47 #
  48 echo "setting device read-only"
  49 blockdev --setro $SCRATCH_DEV
  50
  51 #
  52 # Mount it, and make sure we can't write to it, and we can unmount it again
  53 #
  54 echo "mounting read-only block device:"
  55 _scratch_mount 2>&1 | _filter_scratch
  56
  57 echo "touching file on read-only filesystem (should fail)"
  58 touch $SCRATCH_MNT/foo 2>&1 | _filter_scratch
  59
  60 #
  61 # Apparently this used to be broken at some point:
  62 #       http://oss.sgi.com/bugzilla/show_bug.cgi?id=807
  63 #
  64 echo "unmounting read-only filesystem"
  65 umount $SCRATCH_MNT 2>&1 | _filter_scratch
  66
  67 echo "setting device read-write"
  68 blockdev --setrw $SCRATCH_DEV
  69
  70 echo "mounting read-write block device:"
  71 _scratch_mount 2>&1 | _filter_scratch
  72
  73 echo "touch files"
  74 touch $SCRATCH_MNT/{0,1,2,3,4,5,6,7,8,9}{0,1,2,3,4,5,6,7,8,9}
  75
  76 echo "going down:"
  77 src/godown -f $SCRATCH_MNT
  78
  79 echo "unmounting shutdown filesystem:"
  80 umount $SCRATCH_MNT 2>&1 | _filter_scratch
  81
  82 echo "setting device read-only"
  83 blockdev --setro $SCRATCH_DEV
  84
  85 #
  86 # Mounting a filesystem that requires log-recovery fails unless
  87 # -o norecovery is used.
  88 #
  89 echo "mounting filesystem that needs recovery on a read-only device:"
  90 _scratch_mount 2>&1 | _filter_scratch
  91
  92 echo "unmounting read-only filesystem"
  93 umount $SCRATCH_MNT 2>&1 | _filter_scratch
  94
  95 #
  96 # This is the way out if the underlying device really is read-only.
  97 # Doesn't mean it's a good idea in practive, more a last resort
  98 # data recovery hack.
  99 #
 100 echo "mounting filesystem with -o norecovery on a read-only device:"
 101 _scratch_mount -o norecovery 2>&1 | _filter_scratch
 102
 103 echo "unmounting read-only filesystem"
 104 umount $SCRATCH_MNT 2>&1 | _filter_scratch
 105
 106 echo "setting device read-write"
 107 blockdev --setrw $SCRATCH_DEV
 108
 109 #
 110 # But log recovery is performed when mount with -o ro as long as
 111 # the underlying device is not write protected.
 112 #
 113 echo "mounting filesystem that needs recovery with -o ro:"
 114 _scratch_mount -o ro 2>&1 | _filter_scratch
 115
 116
 117 # success, all done
 118 echo "*** done"
 119 rm -f $seq.full
 120 status=0