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 [ $? -eq 0 ]; then
  23         _notrun "Cannot run tests with DAX on dmerror devices"
  24 fi
  25
  26 _dmerror_setup()
  27 {
  28         local dm_backing_dev=$SCRATCH_DEV
  29
  30         local blk_dev_size=`blockdev --getsz $dm_backing_dev`
  31
  32         DMERROR_DEV='/dev/mapper/error-test'
  33
  34         DMLINEAR_TABLE="0 $blk_dev_size linear $dm_backing_dev 0"
  35
  36         DMERROR_TABLE="0 $blk_dev_size error $dm_backing_dev 0"
  37 }
  38
  39 _dmerror_init()
  40 {
  41         _dmerror_setup
  42         $DMSETUP_PROG remove error-test > /dev/null 2>&1
  43         $DMSETUP_PROG create error-test --table "$DMLINEAR_TABLE" || \
  44                 _fatal "failed to create dm linear device"
  45 }
  46
  47 _dmerror_mount()
  48 {
  49         _scratch_options mount
  50         $MOUNT_PROG -t $FSTYP `_common_dev_mount_options $*` $SCRATCH_OPTIONS \
  51                 $DMERROR_DEV $SCRATCH_MNT
  52 }
  53
  54 _dmerror_unmount()
  55 {
  56         umount $SCRATCH_MNT
  57 }
  58
  59 _dmerror_cleanup()
  60 {
  61         $UMOUNT_PROG $SCRATCH_MNT > /dev/null 2>&1
  62         # wait for device to be fully settled so that 'dmsetup remove' doesn't
  63         # fail due to EBUSY
  64         $UDEV_SETTLE_PROG >/dev/null 2>&1
  65         $DMSETUP_PROG remove error-test > /dev/null 2>&1
  66 }
  67
  68 _dmerror_load_error_table()
  69 {
  70         suspend_opt="--nolockfs"
  71
  72         if [ "$1" = "lockfs" ]; then
  73                 suspend_opt=""
  74         elif [ -n "$*" ]; then
  75                 suspend_opt="$*"
  76         fi
  77
  78         $DMSETUP_PROG suspend $suspend_opt error-test
  79         [ $? -ne 0 ] && _fail  "dmsetup suspend failed"
  80
  81         $DMSETUP_PROG load error-test --table "$DMERROR_TABLE"
  82         [ $? -ne 0 ] && _fail "dmsetup failed to load error table"
  83
  84         $DMSETUP_PROG resume error-test
  85         [ $? -ne 0 ] && _fail  "dmsetup resume failed"
  86 }
  87
  88 _dmerror_load_working_table()
  89 {
  90         suspend_opt="--nolockfs"
  91
  92         if [ "$1" = "lockfs" ]; then
  93                 suspend_opt=""
  94         elif [ -n "$*" ]; then
  95                 suspend_opt="$*"
  96         fi
  97
  98         $DMSETUP_PROG suspend $suspend_opt error-test
  99         [ $? -ne 0 ] && _fail  "dmsetup suspend failed"
 100
 101         $DMSETUP_PROG load error-test --table "$DMLINEAR_TABLE"
 102         [ $? -ne 0 ] && _fail "dmsetup failed to load error table"
 103
 104         $DMSETUP_PROG resume error-test
 105         [ $? -ne 0 ] && _fail  "dmsetup resume failed"
 106 }