1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
|
#!/bin/sh
# Copyright (C) 2009-2015 Red Hat, Inc. All rights reserved.
#
# 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,
# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
SKIP_WITH_LVMPOLLD=1
. lib/inittest
# skip this test if mdadm or sfdisk (or others) aren't available
which sfdisk || skip
test -f /proc/mdstat && grep -q raid0 /proc/mdstat || \
modprobe raid0 || skip
aux lvmconf 'devices/md_component_detection = 1'
aux extend_filter_LVMTEST
aux extend_filter "a|/dev/md.*|"
aux prepare_devs 2
# create 2 disk MD raid0 array (stripe_width=128K)
aux prepare_md_dev 0 64 2 "$dev1" "$dev2"
mddev=$(< MD_DEV)
pvdev=$(< MD_DEV_PV)
# Test alignment of PV on MD without any MD-aware or topology-aware detection
# - should treat $mddev just like any other block device
pvcreate --metadatasize 128k \
--config 'devices {md_chunk_alignment=0 data_alignment_detection=0 data_alignment_offset_detection=0}' \
"$pvdev"
check pv_field "$pvdev" pe_start "1.00m"
# Test md_chunk_alignment independent of topology-aware detection
pvcreate --metadatasize 128k \
--config 'devices {data_alignment_detection=0 data_alignment_offset_detection=0}' \
"$pvdev"
check pv_field "$pvdev" pe_start "1.00m"
# Test newer topology-aware alignment detection
# - first added to 2.6.31 but not "reliable" until 2.6.33
if aux kernel_at_least 2 6 33 ; then
# optimal_io_size=131072, minimum_io_size=65536
pvcreate --metadatasize 128k \
--config 'devices { md_chunk_alignment=0 }' "$pvdev"
check pv_field "$pvdev" pe_start "1.00m"
pvremove "$pvdev"
fi
# partition MD array directly, depends on blkext in Linux >= 2.6.28
if aux kernel_at_least 2 6 28 ; then
# create one partition
sfdisk "$mddev" <<EOF
,,83
EOF
# Wait till all partition links in udev are created
aux udev_wait
# Skip test if udev rule has not created proper links for partitions
test -b "${mddev}p1" || { ls -laR /dev ; skip "Missing partition link" ; }
pvscan
# make sure partition on MD is _not_ removed
# - tests partition -> parent lookup via sysfs paths
not pvcreate --metadatasize 128k "$pvdev"
# verify alignment_offset is accounted for in pe_start
# - topology infrastructure is available in Linux >= 2.6.31
# - also tests partition -> parent lookup via sysfs paths
# Checking for 'alignment_offset' in sysfs implies Linux >= 2.6.31
# but reliable alignment_offset support requires kernel.org Linux >= 2.6.33
if aux kernel_at_least 2 6 33 ; then
# in case the system is running without devtmpfs /dev
# wait here for created device node on tmpfs
test "$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/${mddev}p1"
fi
fi
# Test newer topology-aware alignment detection w/ --dataalignment override
if aux kernel_at_least 2 6 33 ; then
# make sure we're clean for another test
dd if=/dev/zero of="$mddev" bs=512 count=1
aux prepare_md_dev 0 1024 2 "$dev1" "$dev2"
pvdev=$(< MD_DEV_PV)
# optimal_io_size=2097152, minimum_io_size=1048576
pvcreate --metadatasize 128k \
--config 'devices { md_chunk_alignment=0 }' "$pvdev"
check pv_field "$pvdev" pe_start "2.00m"
# now verify pe_start alignment override using --dataalignment
pvcreate --dataalignment 64k --metadatasize 128k \
--config 'devices { md_chunk_alignment=0 }' "$pvdev"
check pv_field "$pvdev" pe_start "192.00k"
fi
|
