mirror of
https://github.com/linux-apfs/apfstests.git
synced 2026-05-01 15:01:44 -07:00
Jan Kara
828f12b965
Ext4 will want to use dmhugedisk infrastructure for testing resize bugs. Ext4 fs images are rather sparse (especially with smaller block sizes) so the current chunk size of 512 sectors leads to large space consumption. Allow test to specify chunk size. Signed-off-by: Jan Kara <jack@suse.cz> Reviewed-by: Eryu Guan <guaneryu@gmail.com> Signed-off-by: Eryu Guan <guaneryu@gmail.com>
66 lines
2.2 KiB
Plaintext
66 lines
2.2 KiB
Plaintext
##/bin/bash
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# Routines for creating huge (fake) disks
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#-----------------------------------------------------------------------
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# Copyright (c) 2016 Oracle. All Rights Reserved.
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
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# USA
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#
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# Contact information: Oracle Corporation, 500 Oracle Parkway,
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# Redwood Shores, CA 94065, USA, or: http://www.oracle.com/
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#-----------------------------------------------------------------------
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_require_dmhugedisk()
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{
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_require_dm_target zero
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_require_dm_target snapshot
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}
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_dmhugedisk_init()
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{
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test -z "$1" && _fatal "must specify sector count to _dmhugedisk_init"
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local dm_backing_dev=$SCRATCH_DEV
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local chunk_size="$2"
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if [ -z "$chunk_size" ]; then
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chunk_size=512
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fi
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$DMSETUP_PROG remove huge-test > /dev/null 2>&1
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$DMSETUP_PROG remove huge-test-zero > /dev/null 2>&1
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local blk_dev_size=$1
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DMHUGEDISK_ZERO='/dev/mapper/huge-test-zero'
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DMHUGEDISK_DEV='/dev/mapper/huge-test'
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DMHUGEDISK_ZERO_TABLE="0 $blk_dev_size zero"
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DMHUGEDISK_DEV_TABLE="0 $blk_dev_size snapshot $DMHUGEDISK_ZERO $SCRATCH_DEV N $chunk_size"
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$DMSETUP_PROG create huge-test-zero --table "$DMHUGEDISK_ZERO_TABLE" || \
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_fatal "failed to create dm huge zero device"
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$DMSETUP_PROG create huge-test --table "$DMHUGEDISK_DEV_TABLE" || \
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_fatal "failed to create dm huge device"
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}
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_dmhugedisk_cleanup()
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{
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$UMOUNT_PROG $SCRATCH_MNT > /dev/null 2>&1
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# wait for device to be fully settled so that 'dmsetup remove' doesn't
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# fail due to EBUSY
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$UDEV_SETTLE_PROG >/dev/null 2>&1
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$DMSETUP_PROG remove huge-test > /dev/null 2>&1
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$DMSETUP_PROG remove huge-test-zero > /dev/null 2>&1
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}
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