tests/generic/589

   1 #! /bin/bash
   2 # SPDX-License-Identifier: GPL-2.0
   3 # Copyright (c) 2019 Red Hat Inc.  All Rights Reserved.
   4 #
   5 # FS QA Test 589
   6 #
   7 # Test mount shared subtrees, verify the move semantics:
   8 #
   9 # ---------------------------------------------------------------------------
  10 # |         MOVE MOUNT OPERATION                                            |
  11 # |**************************************************************************
  12 # |source(A)->| shared       |       private  |       slave    | unbindable |
  13 # | dest(B)  |               |                |                |            |
  14 # |   |      |               |                |                |            |
  15 # |   v      |               |                |                |            |
  16 # |**************************************************************************
  17 # |  shared  | shared        |     shared     | shared & slave |  invalid   |
  18 # |          |               |                |                |            |
  19 # |non-shared| shared        |      private   |      slave     | unbindable |
  20 # ***************************************************************************
  21 #   NOTE: moving a mount residing under a shared mount is invalid.
  22 #
  23 #-----------------------------------------------------------------------
  24 #
  25 . ./common/preamble
  26 _begin_fstest auto mount
  27
  28 # Override the default cleanup function.
  29 _cleanup()
  30 {
  31         cd /
  32         rm -f $tmp.*
  33         _clear_mount_stack
  34         # make sure there's no bug cause dentry isn't be freed
  35         rm -rf $MNTHEAD
  36 }
  37
  38 # Import common functions.
  39 . ./common/filter
  40
  41 # real QA test starts here
  42 _supported_fs generic
  43 _require_test
  44 _require_scratch
  45 _require_local_device $SCRATCH_DEV
  46
  47 fs_stress()
  48 {
  49         local target=$1
  50
  51         $FSSTRESS_PROG -n 50 -p 3 -d $target >/dev/null
  52         sync
  53 }
  54
  55 # prepare some mountpoint dir
  56 SRCHEAD=$TEST_DIR/$seq-src
  57 DSTHEAD=$TEST_DIR/$seq-dst
  58 rm -rf $SRCHEAD $DSTHEAD
  59 mkdir $SRCHEAD $DSTHEAD 2>>$seqres.full
  60 mpA=$SRCHEAD/"$$"_mpA
  61 mpB=$SRCHEAD/"$$"_mpB
  62 mpC=$DSTHEAD/"$$"_mpC
  63 mpD=$DSTHEAD/"$$"_mpD
  64
  65 find_mnt()
  66 {
  67         echo "------"
  68         findmnt -n -o TARGET,SOURCE $SCRATCH_DEV | \
  69                 sed -e "s;$mpA;mpA;g" \
  70                     -e "s;$mpB;mpB;g" \
  71                     -e "s;$mpC;mpC;g" \
  72                     -e "s;$mpD;mpD;g" | \
  73                 _filter_spaces | _filter_testdir_and_scratch | sort
  74         echo "======"
  75 }
  76
  77 start_test()
  78 {
  79         local type=$1
  80
  81         _scratch_mkfs >$seqres.full 2>&1
  82
  83         _get_mount -t $FSTYP $SCRATCH_DEV $SRCHEAD
  84         # make sure $SRCHEAD is private
  85         $MOUNT_PROG --make-private $SRCHEAD
  86
  87         _get_mount -t $FSTYP $SCRATCH_DEV $DSTHEAD
  88         # test start with a bind, then make-shared $DSTHEAD
  89         _get_mount --bind $DSTHEAD $DSTHEAD
  90         $MOUNT_PROG --make-"${type}" $DSTHEAD
  91         mkdir $mpA $mpB $mpC $mpD
  92 }
  93
  94 end_test()
  95 {
  96         _clear_mount_stack
  97         rm -rf $mpA $mpB $mpC $mpD
  98 }
  99
 100 move_run()
 101 {
 102         local source=$1
 103         local dest=$2
 104
 105         start_test $dest
 106
 107         echo "move $source to $dest"
 108         _get_mount -t $FSTYP $SCRATCH_DEV $mpA
 109         mkdir -p $mpA/dir 2>/dev/null
 110         $MOUNT_PROG --make-shared $mpA
 111         # need a peer for slave later
 112         _get_mount --bind $mpA $mpB
 113         $MOUNT_PROG --make-"$source" $mpB
 114         # maybe unbindable at here
 115         _get_mount --move $mpB $mpC 2>/dev/null
 116         if [ $? -ne 0 ]; then
 117                 find_mnt
 118                 end_test
 119                 return 0
 120         fi
 121
 122         # check mpC after move B to C
 123         for m in $mpA $mpC; do
 124                 _get_mount -t $FSTYP $SCRATCH_DEV $m/dir
 125                 fs_stress $m/dir
 126                 find_mnt
 127                 _put_mount
 128         done
 129
 130         # mpC will be in different parent mount, test moving from different
 131         # parent mount, and moving a mount residing under a shared mount is
 132         # invalid
 133         _get_mount --move $mpC $mpD 2>/dev/null
 134         if [ $? -ne 0 ]; then
 135                 find_mnt
 136                 end_test
 137                 return 0
 138         fi
 139         for m in $mpA $mpD; do
 140                 _get_mount -t $FSTYP $SCRATCH_DEV $m/dir
 141                 fs_stress $m/dir
 142                 find_mnt
 143                 _put_mount
 144         done
 145
 146         end_test
 147 }
 148
 149 move_test()
 150 {
 151         #        source     dest
 152         move_run shared     shared
 153         move_run slave      shared
 154         move_run private    shared
 155         move_run unbindable shared
 156
 157         move_run shared     slave
 158         move_run slave      slave
 159         move_run private    slave
 160         move_run unbindable slave
 161
 162         move_run shared     private
 163         move_run slave      private
 164         move_run private    private
 165         move_run unbindable private
 166 }
 167
 168 move_test
 169
 170 # success, all done
 171 status=0
 172 exit