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#!/bin/sh
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# Copyright (C) 2009-2015 Red Hat, Inc. All rights reserved.
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#
# This copyrighted material is made available to anyone wishing to use,
# modify, copy, or redistribute it subject to the terms and conditions
# of the GNU General Public License v.2.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software Foundation,
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# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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SKIP_WITH_LVMLOCKD = 1
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SKIP_WITH_LVMPOLLD = 1
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. lib/inittest
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# skip this test if mdadm or sfdisk (or others) aren't available
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which sfdisk || skip
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test -f /proc/mdstat && grep -q raid0 /proc/mdstat || \
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modprobe raid0 || skip
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aux lvmconf 'devices/md_component_detection = 1'
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aux extend_filter_LVMTEST
aux extend_filter "a|/dev/md.*|"
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aux prepare_devs 2
# create 2 disk MD raid0 array (stripe_width=128K)
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aux prepare_md_dev 0 64 2 " $dev1 " " $dev2 "
mddev = $( < MD_DEV)
pvdev = $( < MD_DEV_PV)
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# Test alignment of PV on MD without any MD-aware or topology-aware detection
# - should treat $mddev just like any other block device
pvcreate --metadatasize 128k \
--config 'devices {md_chunk_alignment=0 data_alignment_detection=0 data_alignment_offset_detection=0}' \
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" $pvdev "
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check pv_field " $pvdev " pe_start "1.00m"
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# Test md_chunk_alignment independent of topology-aware detection
pvcreate --metadatasize 128k \
--config 'devices {data_alignment_detection=0 data_alignment_offset_detection=0}' \
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" $pvdev "
check pv_field " $pvdev " pe_start "1.00m"
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# Test newer topology-aware alignment detection
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# - first added to 2.6.31 but not "reliable" until 2.6.33
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if aux kernel_at_least 2 6 33 ; then
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# optimal_io_size=131072, minimum_io_size=65536
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pvcreate --metadatasize 128k \
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--config 'devices { md_chunk_alignment=0 }' " $pvdev "
check pv_field " $pvdev " pe_start "1.00m"
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pvremove " $pvdev "
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fi
# partition MD array directly, depends on blkext in Linux >= 2.6.28
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if aux kernel_at_least 2 6 28 ; then
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# create one partition
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sfdisk " $mddev " <<EOF
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,,83
EOF
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# Wait till all partition links in udev are created
aux udev_wait
# Skip test if udev rule has not created proper links for partitions
test -b " ${ mddev } p1 " || { ls -laR /dev ; skip "Missing partition link" ; }
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pvscan
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# make sure partition on MD is _not_ removed
# - tests partition -> parent lookup via sysfs paths
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not pvcreate --metadatasize 128k " $pvdev "
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# verify alignment_offset is accounted for in pe_start
# - topology infrastructure is available in Linux >= 2.6.31
# - also tests partition -> parent lookup via sysfs paths
# Checking for 'alignment_offset' in sysfs implies Linux >= 2.6.31
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# but reliable alignment_offset support requires kernel.org Linux >= 2.6.33
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if aux kernel_at_least 2 6 33 ; then
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# in case the system is running without devtmpfs /dev
# wait here for created device node on tmpfs
test " $DM_DEV_DIR " != "/dev" && cp -LR " ${ mddev } p1 " " $DM_DEV_DIR "
pvcreate --metadatasize 128k " ${ pvdev } p1 "
maj = $(( $( stat -L --printf= 0x%t " ${ mddev } p1 " ) ))
min = $(( $( stat -L --printf= 0x%T " ${ mddev } p1 " ) ))
sysfs_alignment_offset = " /sys/dev/block/ $maj : $min /alignment_offset "
[ -f " $sysfs_alignment_offset " ] && \
alignment_offset = $( < " $sysfs_alignment_offset " ) || \
alignment_offset = 0
# default alignment is 1M, add alignment_offset
pv_align = $(( 1048576 + $alignment_offset ))
check pv_field " ${ pvdev } p1 " pe_start $pv_align --units b --nosuffix
pvremove " ${ pvdev } p1 "
test " $DM_DEV_DIR " != "/dev" && rm -f " $DM_DEV_DIR / ${ mddev } p1 "
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fi
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fi
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# Test newer topology-aware alignment detection w/ --dataalignment override
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if aux kernel_at_least 2 6 33 ; then
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# make sure we're clean for another test
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dd if = /dev/zero of = " $mddev " bs = 512 count = 1
aux prepare_md_dev 0 1024 2 " $dev1 " " $dev2 "
pvdev = $( < MD_DEV_PV)
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# optimal_io_size=2097152, minimum_io_size=1048576
pvcreate --metadatasize 128k \
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--config 'devices { md_chunk_alignment=0 }' " $pvdev "
check pv_field " $pvdev " pe_start "2.00m"
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# now verify pe_start alignment override using --dataalignment
pvcreate --dataalignment 64k --metadatasize 128k \
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--config 'devices { md_chunk_alignment=0 }' " $pvdev "
check pv_field " $pvdev " pe_start "192.00k"
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fi