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lvm2/test/shell/lvconvert-raid-reshape.sh

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#!/bin/sh
# Copyright (C) 2017 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 10 2 || skip
aux prepare_pvs 65 64
vgcreate -s 1M $vg $(cat DEVICES)
function _lvcreate
{
local level=$1
local req_stripes=$2
local stripes=$3
local size=$4
local vg=$5
local lv=$6
lvcreate -y -aey --type $level -i $req_stripes -L $size -n $lv $vg
check lv_first_seg_field $vg/$lv segtype "$level"
check lv_first_seg_field $vg/$lv datastripes $req_stripes
check lv_first_seg_field $vg/$lv stripes $stripes
mkfs.ext4 "$DM_DEV_DIR/$vg/$lv"
fsck -fn "$DM_DEV_DIR/$vg/$lv"
}
function _lvconvert
{
local req_level=$1
local level=$2
local data_stripes=$3
local stripes=$4
local vg=$5
local lv=$6
local region_size=$7
local wait_and_check=1
local R=""
[ -n "$region_size" ] && R="-R $region_size"
[ "${level:0:7}" = "striped" ] && wait_and_check=0
[ "${level:0:5}" = "raid0" ] && wait_and_check=0
lvconvert -y --ty $req_level $R $vg/$lv
[ $? -ne 0 ] && return $?
check lv_first_seg_field $vg/$lv segtype "$level"
check lv_first_seg_field $vg/$lv data_stripes $data_stripes
check lv_first_seg_field $vg/$lv stripes $stripes
[ -n "$region_size" ] && check lv_field $vg/$lv regionsize $region_size
if [ "$wait_and_check" -eq 1 ]
then
fsck -fn "$DM_DEV_DIR/$vg/$lv"
aux wait_for_sync $vg $lv
fi
fsck -fn "$DM_DEV_DIR/$vg/$lv"
}
function _reshape_layout
{
local type=$1
shift
local data_stripes=$1
shift
local stripes=$1
shift
local vg=$1
shift
local lv=$1
shift
local opts="$*"
local ignore_a_chars=0
[[ "$opts" =~ "--stripes" ]] && ignore_a_chars=1
lvconvert -vvvv -y --ty $type $opts $vg/$lv
check lv_first_seg_field $vg/$lv segtype "$type"
check lv_first_seg_field $vg/$lv data_stripes $data_stripes
check lv_first_seg_field $vg/$lv stripes $stripes
aux wait_for_sync $vg $lv $ignore_a_chars
fsck -fn "$DM_DEV_DIR/$vg/$lv"
}
# Delay leg so that rebuilding status characters
# can be read before resync finished too quick.
# aux delay_dev "$dev1" 1
#
# Start out with raid5(_ls)
#
# Create 3-way striped raid5 (4 legs total)
_lvcreate raid5_ls 3 4 16M $vg $lv1
check lv_first_seg_field $vg/$lv1 segtype "raid5_ls"
aux wait_for_sync $vg $lv1
# Reshape it to 256K stripe size
_reshape_layout raid5_ls 3 4 $vg $lv1 --stripesize 256K
check lv_first_seg_field $vg/$lv1 stripesize "256.00k"
# Convert raid5(_n) -> striped
not _lvconvert striped striped 3 3 $vg $lv1 512k
_reshape_layout raid5_n 3 4 $vg $lv1
_lvconvert striped striped 3 3 $vg $lv1
# Convert striped -> raid5_n
_lvconvert raid5_n raid5_n 3 4 $vg $lv1 "" 1
# Convert raid5_n -> raid5_ls
_reshape_layout raid5_ls 3 4 $vg $lv1
# Convert raid5_ls to 5 stripes
_reshape_layout raid5_ls 5 6 $vg $lv1 --stripes 5
# Convert raid5_ls back to 3 stripes
_reshape_layout raid5_ls 3 6 $vg $lv1 --stripes 3 --force
_reshape_layout raid5_ls 3 4 $vg $lv1 --stripes 3
# Convert raid5_ls to 7 stripes
_reshape_layout raid5_ls 7 8 $vg $lv1 --stripes 7
# Convert raid5_ls to 9 stripes
_reshape_layout raid5_ls 9 10 $vg $lv1 --stripes 9
# Convert raid5_ls to 14 stripes
_reshape_layout raid5_ls 14 15 $vg $lv1 --stripes 14
# Convert raid5_ls to 63 stripes
_reshape_layout raid5_ls 63 64 $vg $lv1 --stripes 63
# Convert raid5_ls back to 27 stripes
_reshape_layout raid5_ls 27 64 $vg $lv1 --stripes 27 --force
_reshape_layout raid5_ls 27 28 $vg $lv1 --stripes 27
# Convert raid5_ls back to 4 stripes
_reshape_layout raid5_ls 4 28 $vg $lv1 --stripes 4 --force
_reshape_layout raid5_ls 4 5 $vg $lv1 --stripes 4
# Convert raid5_ls back to 3 stripes
_reshape_layout raid5_ls 3 5 $vg $lv1 --stripes 3 --force
_reshape_layout raid5_ls 3 4 $vg $lv1 --stripes 3
# Convert raid5_ls -> raid5_rs
_reshape_layout raid5_rs 3 4 $vg $lv1
# Convert raid5_rs -> raid5_la
_reshape_layout raid5_la 3 4 $vg $lv1
# Convert raid5_la -> raid5_ra
_reshape_layout raid5_ra 3 4 $vg $lv1
# Convert raid5_ra -> raid6_ra_6
_lvconvert raid6_ra_6 raid6_ra_6 3 5 $vg $lv1 "4.00m" 1
# Convert raid5_la -> raid6(_zr)
_reshape_layout raid6 3 5 $vg $lv1
# Convert raid6(_zr) -> raid6_nc
_reshape_layout raid6_nc 3 5 $vg $lv1
# Convert raid6(_nc) -> raid6_nr
_reshape_layout raid6_nr 3 5 $vg $lv1
# Convert raid6_nr) -> raid6_rs_6
_reshape_layout raid6_rs_6 3 5 $vg $lv1
# Convert raid6_rs_6 to 5 stripes
_reshape_layout raid6_rs_6 5 7 $vg $lv1 --stripes 5
# Convert raid6_rs_6 to 4 stripes
_reshape_layout raid6_rs_6 4 7 $vg $lv1 --stripes 4 --force
_reshape_layout raid6_rs_6 4 6 $vg $lv1 --stripes 4
check lv_first_seg_field $vg/$lv1 stripesize "256.00k"
# Convert raid6_rs_6 to raid6_n_6
_reshape_layout raid6_n_6 4 6 $vg $lv1
# Convert raid6_n_6 -> striped
_lvconvert striped striped 4 4 $vg $lv1
check lv_first_seg_field $vg/$lv1 stripesize "256.00k"
# Convert striped -> raid10(_near)
_lvconvert raid10 raid10 4 8 $vg $lv1
# Convert raid10 to 10 stripes and 64K stripesize
# FIXME: change once we support odd numbers of raid10 stripes
not _reshape_layout raid10 4 9 $vg $lv1 --stripes 9 --stripesize 64K
_reshape_layout raid10 5 10 $vg $lv1 --stripes 10 --stripesize 64K
check lv_first_seg_field $vg/$lv1 stripesize "64.00k"
# Convert raid6_n_6 -> striped
_lvconvert striped striped 5 5 $vg $lv1
check lv_first_seg_field $vg/$lv1 stripesize "64.00k"
vgremove -ff $vg