common/dmerror

   1 ##/bin/bash
   2 #
   3 # Copyright (c) 2015 Oracle.  All Rights Reserved.
   4 #
   5 # This program is free software; you can redistribute it and/or
   6 # modify it under the terms of the GNU General Public License as
   7 # published by the Free Software Foundation.
   8 #
   9 # This program is distributed in the hope that it would be useful,
  10 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 # GNU General Public License for more details.
  13 #
  14 # You should have received a copy of the GNU General Public License
  15 # along with this program; if not, write the Free Software Foundation,
  16 # Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  17 #
  18 #
  19 # common functions for setting up and tearing down a dmerror device
  20
  21 echo $MOUNT_OPTIONS | grep -q dax
  22 if [ $? -eq 0 ]; then
  23         _notrun "Cannot run tests with DAX on dmerror devices"
  24 fi
  25
  26 _dmerror_init()
  27 {
  28         local dm_backing_dev=$SCRATCH_DEV
  29
  30         $DMSETUP_PROG remove error-test > /dev/null 2>&1
  31
  32         local blk_dev_size=`blockdev --getsz $dm_backing_dev`
  33
  34         DMERROR_DEV='/dev/mapper/error-test'
  35
  36         DMLINEAR_TABLE="0 $blk_dev_size linear $dm_backing_dev 0"
  37
  38         $DMSETUP_PROG create error-test --table "$DMLINEAR_TABLE" || \
  39                 _fatal "failed to create dm linear device"
  40
  41         DMERROR_TABLE="0 $blk_dev_size error $dm_backing_dev 0"
  42 }
  43
  44 _dmerror_mount()
  45 {
  46         _scratch_options mount
  47         $MOUNT_PROG -t $FSTYP `_common_dev_mount_options $*` $SCRATCH_OPTIONS \
  48                 $DMERROR_DEV $SCRATCH_MNT
  49 }
  50
  51 _dmerror_unmount()
  52 {
  53         umount $SCRATCH_MNT
  54 }
  55
  56 _dmerror_cleanup()
  57 {
  58         $UMOUNT_PROG $SCRATCH_MNT > /dev/null 2>&1
  59         # wait for device to be fully settled so that 'dmsetup remove' doesn't
  60         # fail due to EBUSY
  61         $UDEV_SETTLE_PROG >/dev/null 2>&1
  62         $DMSETUP_PROG remove error-test > /dev/null 2>&1
  63 }
  64
  65 _dmerror_load_error_table()
  66 {
  67         suspend_opt="--nolockfs"
  68
  69         if [ "$1" = "lockfs" ]; then
  70                 suspend_opt=""
  71         elif [ -n "$*" ]; then
  72                 suspend_opt="$*"
  73         fi
  74
  75         $DMSETUP_PROG suspend $suspend_opt error-test
  76         [ $? -ne 0 ] && _fail  "dmsetup suspend failed"
  77
  78         $DMSETUP_PROG load error-test --table "$DMERROR_TABLE"
  79         [ $? -ne 0 ] && _fail "dmsetup failed to load error table"
  80
  81         $DMSETUP_PROG resume error-test
  82         [ $? -ne 0 ] && _fail  "dmsetup resume failed"
  83 }
  84
  85 _dmerror_load_working_table()
  86 {
  87         suspend_opt="--nolockfs"
  88
  89         if [ "$1" = "lockfs" ]; then
  90                 suspend_opt=""
  91         elif [ -n "$*" ]; then
  92                 suspend_opt="$*"
  93         fi
  94
  95         $DMSETUP_PROG suspend $suspend_opt error-test
  96         [ $? -ne 0 ] && _fail  "dmsetup suspend failed"
  97
  98         $DMSETUP_PROG load error-test --table "$DMLINEAR_TABLE"
  99         [ $? -ne 0 ] && _fail "dmsetup failed to load error table"
 100
 101         $DMSETUP_PROG resume error-test
 102         [ $? -ne 0 ] && _fail  "dmsetup resume failed"
 103 }