util-linux-ng-2.17.2/tests/ts/fdisk/align-512-4K-md

#!/bin/bash

#
# This file is part of util-linux-ng.
#
# This file 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 file 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.
#


#
# Test alignment for 512/512 disk *with* topology -- aligned to optimal
# I/O size (32KiB)
#

TS_TOPDIR="$(dirname $0)/../.."
TS_DESC="align 512/4K +MD"

. $TS_TOPDIR/functions.sh
ts_init "$*"
ts_skip_nonroot

modprobe --dry-run --quiet scsi_debug
[ "$?" == 0 ] || ts_skip "missing scsi_debug module"
[ -x /sbin/mdadm ] || ts_skip "missing mdadm"

rmmod scsi_debug &> /dev/null
modprobe scsi_debug dev_size_mb=50 sector_size=512 physblk_exp=3
[ "$?" == 0 ] || ts_die "Cannot init device"

sleep 3

DEVNAME=$(grep scsi_debug /sys/block/*/device/model | awk -F '/' '{print $4}')
[ "x${DEVNAME}" == "x" ] && ts_die "Cannot found device"

DEVICE="/dev/${DEVNAME}"

ts_log "Create partitions"
$TS_CMD_FDISK ${DEVICE} >> $TS_OUTPUT 2>&1 <<EOF
c
u
n
p
1

+20M
n
p
2


p
w
q
EOF

ts_log "Alignment offsets:"
cat /sys/block/${DEVNAME}/${DEVNAME}{1,2}/alignment_offset >> $TS_OUTPUT 2>&1

sleep 3
MD_DEVNAME=md8
MD_DEVICE=/dev/${MD_DEVNAME}

/sbin/mdadm -q -S ${MD_DEVICE} &> /dev/null
/sbin/mdadm -q --create ${MD_DEVICE} --level=0 --raid-devices=2 ${DEVICE}1 ${DEVICE}2 >> $TS_OUTPUT 2>&1

ts_log "Create partitions (MD)"
$TS_CMD_FDISK ${MD_DEVICE} >> $TS_OUTPUT 2>&1 <<EOF
c
u
n
p
1

+10M
n
p
2

+10M
p
w
q
EOF

ts_log "Alignment offsets (MD):"
cat /sys/block/${MD_DEVNAME}/${MD_DEVNAME}p{1,2}/alignment_offset >> $TS_OUTPUT 2>&1

sleep 3
/sbin/mdadm -q -S ${MD_DEVICE} >> $TS_OUTPUT 2>&1
rmmod scsi_debug

# remove disk ID
sed -i -e 's/Disk identifier:.*//g' $TS_OUTPUT
sed -i -e 's/Building a new.*//g' $TS_OUTPUT

ts_finalize