tests/discards-test

   1 #!/bin/bash
   2
   3 [ -z "$CRYPTSETUP_PATH" ] && CRYPTSETUP_PATH=".."
   4 CRYPTSETUP=$CRYPTSETUP_PATH/cryptsetup
   5 DEV_NAME="discard-t3st"
   6 DEV=""
   7 PWD1="93R4P4pIqAH8"
   8
   9 CRYPTSETUP_VALGRIND=../.libs/cryptsetup
  10 CRYPTSETUP_LIB_VALGRIND=../.libs
  11
  12 cleanup() {
  13         [ -b /dev/mapper/$DEV_NAME ] && dmsetup remove --retry $DEV_NAME
  14         udevadm settle >/dev/null 2>&1
  15         rmmod scsi_debug >/dev/null 2>&1
  16         sleep 2
  17 }
  18
  19 fail()
  20 {
  21         echo "FAILED backtrace:"
  22         while caller $frame; do ((frame++)); done
  23         cleanup
  24         exit 100
  25 }
  26
  27 skip()
  28 {
  29         [ -n "$1" ] && echo "$1"
  30         exit 77
  31 }
  32
  33 function valgrind_setup()
  34 {
  35         command -v valgrind >/dev/null || fail "Cannot find valgrind."
  36         [ ! -f $CRYPTSETUP_VALGRIND ] && fail "Unable to get location of cryptsetup executable."
  37         export LD_LIBRARY_PATH="$CRYPTSETUP_LIB_VALGRIND:$LD_LIBRARY_PATH"
  38 }
  39
  40 function valgrind_run()
  41 {
  42         INFOSTRING="$(basename ${BASH_SOURCE[1]})-line-${BASH_LINENO[0]}" ./valg.sh ${CRYPTSETUP_VALGRIND} "$@"
  43 }
  44
  45 add_device() {
  46         rmmod scsi_debug >/dev/null 2>&1
  47         if [ -d /sys/module/scsi_debug ] ; then
  48                 echo "Cannot use scsi_debug module (in use or compiled-in), test skipped."
  49                 exit 77
  50         fi
  51         modprobe scsi_debug $@ delay=0 >/dev/null 2>&1
  52         if [ $? -ne 0 ] ; then
  53                 echo "This kernel seems to not support proper scsi_debug module, test skipped."
  54                 exit 77
  55         fi
  56
  57         sleep 2
  58         DEV=$(grep -l -e scsi_debug /sys/block/*/device/model | cut -f4 -d /)
  59
  60         DEV="/dev/$DEV"
  61         [ -b $DEV ] || fail "Cannot find $DEV."
  62 }
  63
  64 function check_version()
  65 {
  66         VER_STR=$(dmsetup targets | grep crypt | cut -f 2 -dv)
  67         [ -z "$VER_STR" ] && fail "Failed to parse dm-crypt version."
  68
  69         VER_MAJ=$(echo $VER_STR | cut -f 1 -d.)
  70         VER_MIN=$(echo $VER_STR | cut -f 2 -d.)
  71
  72         # option supported in 1.11
  73         test $VER_MAJ -gt 1 && return 0
  74         test $VER_MIN -ge 11 && return 0
  75         return 1
  76 }
  77
  78 [ ! -x "$CRYPTSETUP" ] && skip "Cannot find $CRYPTSETUP, test skipped."
  79 [ -n "$VALG" ] && valgrind_setup && CRYPTSETUP=valgrind_run
  80 if [ $(id -u) != 0 ]; then
  81         echo "WARNING: You must be root to run this test, test skipped."
  82         exit 77
  83 fi
  84
  85 modprobe dm-crypt >/dev/null 2>&1
  86 if ! check_version ; then
  87         echo "Probably old kernel, test skipped."
  88         exit 77
  89 fi
  90
  91 add_device dev_size_mb=16 sector_size=512 num_tgts=1 lbpu=1
  92
  93 # FIXME test hash of device (unmap -> zero)
  94 # for now just check that flag is enabled
  95
  96 echo "[1] Allowing discards for LUKS device"
  97 echo $PWD1 | $CRYPTSETUP luksFormat --type luks1 $DEV -q -i1 || fail
  98 echo $PWD1 | $CRYPTSETUP luksOpen $DEV $DEV_NAME --allow-discards || fail
  99 $CRYPTSETUP status $DEV_NAME | grep flags | grep discards >/dev/null || fail
 100 $CRYPTSETUP resize $DEV_NAME --size 100 || fail
 101 $CRYPTSETUP status $DEV_NAME | grep flags | grep discards >/dev/null || fail
 102 dmsetup table $DEV_NAME | grep allow_discards >/dev/null || fail
 103 $CRYPTSETUP luksClose $DEV_NAME || fail
 104
 105 echo "[2] Allowing discards for plain device"
 106 echo $PWD1 | $CRYPTSETUP create -q $DEV_NAME $DEV --hash sha256 --allow-discards || fail
 107 $CRYPTSETUP status $DEV_NAME | grep flags | grep discards >/dev/null || fail
 108 $CRYPTSETUP resize $DEV_NAME --size 100 || fail
 109 $CRYPTSETUP status $DEV_NAME | grep flags | grep discards >/dev/null || fail
 110 dmsetup table $DEV_NAME | grep allow_discards >/dev/null || fail
 111 $CRYPTSETUP remove $DEV_NAME || fail
 112
 113 cleanup