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989626926c
Allow "lvconvert --type linear RaidLV" on a raid4 LV providing convenient interim steps to convert to linear. Add respective new test lvconvert-raid-takeover-raid4_to_linear.sh and lvconvert-raid-takeover-linear_to_raid4.sh for linear to raid4 once on it.
83 lines
2.2 KiB
Bash
83 lines
2.2 KiB
Bash
#!/usr/bin/env bash
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# Copyright (C) 2018 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, MA2110-1301 USA
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SKIP_WITH_LVMPOLLD=1
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. lib/inittest
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which mkfs.ext4 || skip
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aux have_raid 1 9 1 || skip
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aux prepare_vg 4 32
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# FIXME: lvconvert leaks 'error' devices
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detect_error_leak_()
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{
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local err=""
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for i in $(dmsetup info -c -o name --noheadings) ; do
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case "$i" in
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"$vg*") (dmsetup table "$i" | grep "error ") && err="$err $i" ;;
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esac
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done
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test -z "$err" || {
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dmsetup table | grep $vg
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dmsetup ls --tree
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die "Device(s) $err should not be here."
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}
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}
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# Create 3-way striped raid4 (4 legs total)
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lvcreate -y --ty raid4 --stripes 3 -L 9M -n $lv $vg
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check lv_field $vg/$lv segtype "raid4"
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check lv_field $vg/$lv data_stripes 3
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check lv_field $vg/$lv stripes 4
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mkfs.ext4 "$DM_DEV_DIR/$vg/$lv"
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fsck -fn "$DM_DEV_DIR/$vg/$lv"
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# Step 1: grow before removing stripes
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lvextend -y -L27M $vg/$lv
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aux wait_for_sync $vg $lv
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# Step 2: convert raid4 -> linear (reshape to remove stripes)
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lvconvert -y -f --ty linear $vg/$lv
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detect_error_leak_
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check lv_field $vg/$lv segtype "raid4"
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check lv_field $vg/$lv data_stripes 1
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check lv_field $vg/$lv stripes 4
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aux wait_for_sync $vg $lv 1
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# Step 2: convert raid4 -> linear (remove freed stripes)
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lvconvert -y --ty linear $vg/$lv
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detect_error_leak_
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check lv_field $vg/$lv segtype "raid4"
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check lv_field $vg/$lv data_stripes 1
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check lv_field $vg/$lv stripes 2
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# Step 3: convert raid4 -> linear (convert to raid1)
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lvconvert -y --ty linear $vg/$lv
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detect_error_leak_
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check lv_field $vg/$lv segtype "raid1"
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check lv_field $vg/$lv data_stripes 2
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check lv_field $vg/$lv stripes 2
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# Step 4: convert raid4 -> linear (convert to linear)
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lvconvert -y --ty linear $vg/$lv
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detect_error_leak_
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check lv_field $vg/$lv segtype "linear"
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check lv_field $vg/$lv data_stripes 1
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check lv_field $vg/$lv stripes 1
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vgremove -ff $vg
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