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raid: support raid5_n convenience type on conversion to raid10

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Fix requesting a conversion on raid5_{ls,rs,la,ra} -> raid10
not offering offering interim convenience type raid5_n.

Resolves: rhbz1468600
This commit is contained in:
Heinz Mauelshagen 2018-03-09 21:15:41 +01:00
parent 6cb2c35d16
commit dd88a0f05c
3 changed files with 65 additions and 1 deletions
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1
WHATS_NEW
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@ -1,5 +1,6 @@
Version 2.02.178 -
=====================================
Offer convenience type raid5_n converting to raid10
Automatically avoid reading invalid snapshots during device scan.
Ensure COW device is writable even for read-only thick snapshots.
Support activation of component LVs in read-only mode.

2
lib/metadata/raid_manip.c
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@ -6119,7 +6119,7 @@ static int _set_convenient_raid145610_segtype_to(const struct lv_segment *seg_fr
return 0;
}
seg_flag = SEG_RAID0_META;
seg_flag = seg_is_raid5_n(seg_from) ? SEG_RAID0_META : SEG_RAID5_N;
} else if (segtype_is_any_raid6(*segtype)) {
if (seg_from->area_count < 4) {

63
test/shell/lvconvert-raid5_to_raid10.sh Normal file
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@ -0,0 +1,63 @@
#!/usr/bin/env bash
# Copyright (C) 2018 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, MA2110-1301 USA
SKIP_WITH_LVMLOCKD=1
SKIP_WITH_LVMPOLLD=1
. lib/inittest
which mkfs.ext4 || skip
aux have_raid 1 13 2 || skip
aux prepare_vg 6
#
# Test multi step raid5 -> raid10 conversion
#
# Create raid5(_ls) LV
lvcreate -y --type raid5 -i 3 -L 16M -R 256K -n $lv1 $vg
check lv_field $vg/$lv1 segtype "raid5"
check lv_field $vg/$lv1 stripes 4
check lv_field $vg/$lv1 data_stripes 3
check lv_field $vg/$lv1 region_size "256.00k"
echo y|mkfs -t ext4 $DM_DEV_DIR/$vg/$lv1
fsck -fn $DM_DEV_DIR/$vg/$lv1
aux wait_for_sync $vg $lv1
fsck -fn $DM_DEV_DIR/$vg/$lv1
# Convert raid5 -> raid10 (first step raid5 -> raid5_n)
lvconvert -y --ty raid10 $vg/$lv1
fsck -fn $DM_DEV_DIR/$vg/$lv1
check lv_field $vg/$lv1 segtype "raid5_n"
check lv_field $vg/$lv1 stripes 4
check lv_field $vg/$lv1 data_stripes 3
check lv_field $vg/$lv1 region_size "256.00k"
aux wait_for_sync $vg $lv1
fsck -fn $DM_DEV_DIR/$vg/$lv1
# Convert raid5 -> raid10 (second step raid5_n -> raid0_meta)
lvconvert -y --ty raid10 $vg/$lv1
check lv_field $vg/$lv1 segtype "raid0_meta"
check lv_field $vg/$lv1 stripes 3
check lv_field $vg/$lv1 data_stripes 3
fsck -fn $DM_DEV_DIR/$vg/$lv1
# Convert raid5 -> raid10 (third + last step raid0_meta -> raid10)
lvconvert -y --ty raid10 -R 256K $vg/$lv1
fsck -fn $DM_DEV_DIR/$vg/$lv1
check lv_field $vg/$lv1 segtype "raid10"
check lv_field $vg/$lv1 stripes 6
check lv_field $vg/$lv1 data_stripes 3
check lv_field $vg/$lv1 region_size "256.00k"
vgremove -ff $vg