| ##/bin/bash |
| # Routines for creating huge (fake) disks |
| #----------------------------------------------------------------------- |
| # Copyright (c) 2016 Oracle. All Rights Reserved. |
| # This program is free software; you can redistribute it and/or modify |
| # it under the terms of the GNU General Public License as published by |
| # the Free Software Foundation; either version 2 of the License, or |
| # (at your option) any later version. |
| # |
| # This program is distributed in the hope that it will be useful, |
| # but WITHOUT ANY WARRANTY; without even the implied warranty of |
| # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| # GNU General Public License for more details. |
| # |
| # You should have received a copy of the GNU General Public License |
| # along with this program; if not, write to the Free Software |
| # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 |
| # USA |
| # |
| # Contact information: Oracle Corporation, 500 Oracle Parkway, |
| # Redwood Shores, CA 94065, USA, or: http://www.oracle.com/ |
| #----------------------------------------------------------------------- |
| |
| _require_dmhugedisk() |
| { |
| _require_dm_target zero |
| _require_dm_target snapshot |
| } |
| |
| _dmhugedisk_init() |
| { |
| test -z "$1" && _fatal "must specify sector count to _dmhugedisk_init" |
| local dm_backing_dev=$SCRATCH_DEV |
| local chunk_size="$2" |
| |
| if [ -z "$chunk_size" ]; then |
| chunk_size=512 |
| fi |
| |
| $DMSETUP_PROG remove huge-test > /dev/null 2>&1 |
| $DMSETUP_PROG remove huge-test-zero > /dev/null 2>&1 |
| |
| local blk_dev_size=$1 |
| |
| DMHUGEDISK_ZERO='/dev/mapper/huge-test-zero' |
| DMHUGEDISK_DEV='/dev/mapper/huge-test' |
| |
| DMHUGEDISK_ZERO_TABLE="0 $blk_dev_size zero" |
| DMHUGEDISK_DEV_TABLE="0 $blk_dev_size snapshot $DMHUGEDISK_ZERO $SCRATCH_DEV N $chunk_size" |
| |
| $DMSETUP_PROG create huge-test-zero --table "$DMHUGEDISK_ZERO_TABLE" || \ |
| _fatal "failed to create dm huge zero device" |
| $DMSETUP_PROG create huge-test --table "$DMHUGEDISK_DEV_TABLE" || \ |
| _fatal "failed to create dm huge device" |
| } |
| |
| _dmhugedisk_cleanup() |
| { |
| $UMOUNT_PROG $SCRATCH_MNT > /dev/null 2>&1 |
| # wait for device to be fully settled so that 'dmsetup remove' doesn't |
| # fail due to EBUSY |
| $UDEV_SETTLE_PROG >/dev/null 2>&1 |
| $DMSETUP_PROG remove huge-test > /dev/null 2>&1 |
| $DMSETUP_PROG remove huge-test-zero > /dev/null 2>&1 |
| } |