tests/generic/409

   1 #! /bin/bash
   2 # SPDX-License-Identifier: GPL-2.0
   3 # Copyright (c) 2016 Red Hat Inc.  All Rights Reserved.
   4 #
   5 # FS QA Test 409
   6 #
   7 # Test mount shared subtrees, verify the bind semantics:
   8 #
   9 # ---------------------------------------------------------------------------
  10 # |         BIND 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     |  invalid   |
  20 # ***************************************************************************
  21 #
  22 seq=`basename $0`
  23 seqres=$RESULT_DIR/$seq
  24 echo "QA output created by $seq"
  25
  26 here=`pwd`
  27 tmp=/tmp/$$
  28 status=1        # failure is the default!
  29 trap "_cleanup; exit \$status" 0 1 2 3 15
  30
  31 _cleanup()
  32 {
  33         cd /
  34         rm -f $tmp.*
  35         _clear_mount_stack
  36         # make sure there's no bug cause dentry isn't be freed
  37         rm -rf $MNTHEAD
  38 }
  39
  40 # get standard environment, filters and checks
  41 . ./common/rc
  42 . ./common/filter
  43
  44 # remove previous $seqres.full before test
  45 rm -f $seqres.full
  46
  47 # real QA test starts here
  48 _supported_fs generic
  49 _require_test
  50 _require_scratch
  51 _require_local_device $SCRATCH_DEV
  52
  53 fs_stress()
  54 {
  55         local target=$1
  56
  57         $FSSTRESS_PROG -z -n 50 -p 3 \
  58                        -f creat=5 \
  59                        -f mkdir=5 \
  60                        -f link=2 \
  61                        -f rename=1 \
  62                        -f rmdir=2 \
  63                        -f unlink=1 \
  64                        -f symlink=1 \
  65                        -f write=1 \
  66                        -f read=1 \
  67                        -f chown=1 \
  68                        -f getdents=1 \
  69                        -f fiemap=1 \
  70                        -d $target >/dev/null
  71         sync
  72 }
  73
  74 # prepare some mountpoint dir
  75 MNTHEAD=$TEST_DIR/$seq
  76 rm -rf $MNTHEAD
  77 mkdir $MNTHEAD 2>>$seqres.full
  78 mpA=$MNTHEAD/"$$"_mpA
  79 mpB=$MNTHEAD/"$$"_mpB
  80 mpC=$MNTHEAD/"$$"_mpC
  81 mpD=$MNTHEAD/"$$"_mpD
  82
  83 find_mnt()
  84 {
  85         echo "------"
  86         findmnt -n -o TARGET,SOURCE $SCRATCH_DEV | \
  87                 sed -e "s;$mpA;mpA;g" \
  88                     -e "s;$mpB;mpB;g" \
  89                     -e "s;$mpC;mpC;g" \
  90                     -e "s;$mpD;mpD;g" | \
  91                 _filter_spaces | _filter_testdir_and_scratch | sort
  92         echo "======"
  93 }
  94
  95 start_test()
  96 {
  97         local type=$1
  98
  99         _scratch_mkfs >$seqres.full 2>&1
 100         _get_mount -t $FSTYP $SCRATCH_DEV $MNTHEAD
 101         $MOUNT_PROG --make-"${type}" $MNTHEAD
 102         mkdir $mpA $mpB $mpC $mpD
 103 }
 104
 105 end_test()
 106 {
 107         _clear_mount_stack
 108         rm -rf $mpA $mpB $mpC $mpD
 109 }
 110
 111 bind_run()
 112 {
 113         local source=$1
 114         local dest=$2
 115
 116         start_test $dest
 117
 118         echo "bind $source on $dest"
 119         _get_mount -t $FSTYP $SCRATCH_DEV $mpA
 120         mkdir -p $mpA/dir 2>/dev/null
 121         $MOUNT_PROG --make-shared $mpA
 122         _get_mount --bind $mpA $mpB
 123         $MOUNT_PROG --make-"$source" $mpB
 124         # maybe unbindable at here
 125         _get_mount --bind $mpB $mpC 2>/dev/null
 126         if [ $? -ne 0 ]; then
 127                 find_mnt
 128                 end_test
 129                 return 0
 130         fi
 131         _get_mount --bind $mpC $mpD
 132         for m in $mpA $mpB $mpC $mpD; do
 133                 _get_mount -t $FSTYP $SCRATCH_DEV $m/dir
 134                 fs_stress $m/dir
 135                 find_mnt
 136                 _put_mount
 137         done
 138
 139         end_test
 140 }
 141
 142 bind_test()
 143 {
 144         #        source     dest
 145         bind_run shared     shared
 146         bind_run slave      shared
 147         bind_run private    shared
 148         bind_run unbindable shared
 149
 150         bind_run shared     slave
 151         bind_run slave      slave
 152         bind_run private    slave
 153         bind_run unbindable slave
 154
 155         bind_run shared     private
 156         bind_run slave      private
 157         bind_run private    private
 158         bind_run unbindable private
 159 }
 160
 161 bind_test
 162
 163 # success, all done
 164 status=0
 165 exit