mirror of
git://sourceware.org/git/lvm2.git
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148 lines
4.6 KiB
Bash
148 lines
4.6 KiB
Bash
#!/usr/bin/env bash
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# Copyright (C) 2009-2015 Red Hat, Inc. All rights reserved.
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#
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# This copyrighted material is made available to anyone wishing to use,
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# modify, copy, or redistribute it subject to the terms and conditions
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# of the GNU General Public License v.2.
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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 Foundation,
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# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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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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mddev="/dev/md33"
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not grep $mddev /proc/mdstat || skip
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aux lvmconf 'devices/md_component_detection = 1'
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aux extend_filter_md "a|/dev/md|"
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aux prepare_devs 2
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# create 2 disk MD raid0 array (stripe_width=128K)
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mdadm --create --metadata=1.0 "$mddev" --level 0 --chunk=64 --raid-devices=2 "$dev1" "$dev2"
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aux wait_md_create "$mddev"
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pvdev="$mddev"
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# Test alignment of PV on MD without any MD-aware or topology-aware detection
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# - should treat $mddev just like any other block device
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pvcreate --metadatasize 128k \
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--config 'devices {md_chunk_alignment=0 data_alignment_detection=0 data_alignment_offset_detection=0}' \
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"$pvdev"
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check pv_field "$pvdev" pe_start "1.00m"
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# Test md_chunk_alignment independent of topology-aware detection
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pvcreate --metadatasize 128k \
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--config 'devices {data_alignment_detection=0 data_alignment_offset_detection=0}' \
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"$pvdev"
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check pv_field "$pvdev" pe_start "1.00m"
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# Test newer topology-aware alignment detection
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# - first added to 2.6.31 but not "reliable" until 2.6.33
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if aux kernel_at_least 2 6 33 ; then
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# optimal_io_size=131072, minimum_io_size=65536
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pvcreate --metadatasize 128k \
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--config 'devices { md_chunk_alignment=0 }' "$pvdev"
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check pv_field "$pvdev" pe_start "1.00m"
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pvremove "$pvdev"
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fi
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# 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 "$mddev" <<EOF
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,,83
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EOF
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# Wait till all partition links in udev are created
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aux udev_wait
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# Skip test if udev rule has not created proper links for partitions
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test -b "${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
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# - tests partition -> parent lookup via sysfs paths
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not pvcreate --metadatasize 128k "$pvdev"
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# verify alignment_offset is accounted for in pe_start
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# - topology infrastructure is available in Linux >= 2.6.31
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# - also tests partition -> parent lookup via sysfs paths
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# Checking for 'alignment_offset' in sysfs implies Linux >= 2.6.31
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# but reliable alignment_offset support requires kernel.org Linux >= 2.6.33
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if aux kernel_at_least 2 6 33 ; then
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# in case the system is running without devtmpfs /dev
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# wait here for created device node on tmpfs
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# test "$DM_DEV_DIR" = "/dev" || cp -LR "${mddev}p1" "${pvdev%/*}"
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pvcreate --metadatasize 128k "${pvdev}p1"
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maj=$(($(stat -L --printf=0x%t "${mddev}p1")))
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min=$(($(stat -L --printf=0x%T "${mddev}p1")))
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ls /sys/dev/block/$maj:$min/
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ls /sys/dev/block/$maj:$min/holders/
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cat /sys/dev/block/$maj:$min/dev
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cat /sys/dev/block/$maj:$min/stat
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cat /sys/dev/block/$maj:$min/size
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sysfs_alignment_offset="/sys/dev/block/$maj:$min/alignment_offset"
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[ -f "$sysfs_alignment_offset" ] && \
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alignment_offset=$(< "$sysfs_alignment_offset") || \
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alignment_offset=0
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# default alignment is 1M, add alignment_offset
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pv_align=$(( 1048576 + alignment_offset ))
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check pv_field "${pvdev}p1" pe_start $pv_align --units b --nosuffix
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pvremove "${pvdev}p1"
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# test "$DM_DEV_DIR" = "/dev" || rm -f "${pvdev}p1"
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fi
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fi
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mdadm --stop "$mddev"
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aux udev_wait
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aux wipefs_a "$dev1"
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aux wipefs_a "$dev2"
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aux udev_wait
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# Test newer topology-aware alignment detection w/ --dataalignment override
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if aux kernel_at_least 2 6 33 ; then
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mdadm --create --metadata=1.0 "$mddev" --level 0 --chunk=1024 --raid-devices=2 "$dev1" "$dev2"
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aux wait_md_create "$mddev"
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pvdev="$mddev"
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# optimal_io_size=2097152, minimum_io_size=1048576
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pvcreate --metadatasize 128k \
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--config 'devices { md_chunk_alignment=0 }' "$pvdev"
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# to see the processing of scanning
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pvs -vvvv
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check pv_field "$pvdev" pe_start "2.00m"
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# now verify pe_start alignment override using --dataalignment
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pvcreate --dataalignment 64k --metadatasize 128k \
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--config 'devices { md_chunk_alignment=0 }' "$pvdev"
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check pv_field "$pvdev" pe_start "192.00k"
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mdadm --stop "$mddev"
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aux udev_wait
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aux wipefs_a "$dev1"
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aux wipefs_a "$dev2"
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aux udev_wait
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fi
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