#!/usr/bin/env bash

# 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



. lib/inittest --skip-with-lvmpolld

# Test reshaping under io load

case "$(uname -r)" in
  3.10.0-862*) skip "Cannot run this test on unfixed kernel." ;;
esac

which mkfs.ext4 || skip
aux have_raid 1 13 2 || skip

mount_dir="mnt"

cleanup_mounted_and_teardown()
{
	umount "$mount_dir" || true
	aux teardown
}

aux prepare_pvs 16 128

get_devs

vgcreate $SHARED -s 1M "$vg" "${DEVICES[@]}"

trap 'cleanup_mounted_and_teardown' EXIT

# Create 10-way striped raid5 (11 legs total)
lvcreate --yes --type raid5_ls --stripesize 64K --stripes 10 -L32 -n $lv1 $vg
check lv_first_seg_field $vg/$lv1 segtype "raid5_ls"
check lv_first_seg_field $vg/$lv1 stripesize "64.00k"
check lv_first_seg_field $vg/$lv1 data_stripes 10
check lv_first_seg_field $vg/$lv1 stripes 11
aux wipefs_a "$DM_DEV_DIR/$vg/$lv1"
mkfs -t ext4 "$DM_DEV_DIR/$vg/$lv1"
fsck -fn "$DM_DEV_DIR/$vg/$lv1"

mkdir -p "$mount_dir"
mount "$DM_DEV_DIR/$vg/$lv1" "$mount_dir"
mkdir -p "$mount_dir/1" "$mount_dir/2"


echo 3 >/proc/sys/vm/drop_caches
aux wait_for_sync $vg $lv1
aux delay_dev "$dev2" 1 500 "$(( $(get first_extent_sector "$dev2") + 128 )):"

lvs -ao+seg_pe_ranges $vg

cp -r /usr/bin "$mount_dir/1" &>/dev/null &
PIDS=( $! )
cp -r /usr/bin "$mount_dir/2" &>/dev/null &
PIDS+=( $! )
#sync &
#SYNC_PID=( $! )

df

# Reshape it to 15 data stripes
lvconvert --yes --stripes 15 $vg/$lv1
aux disable_dev "$dev1"

kill "${PIDS[@]}" 2>/dev/null || true
wait "${PIDS[@]}" || true

aux enable_dev "$dev2"
#aux delay_dev "$dev2" 10 40 "$(get first_extent_sector "$dev2")"
check lv_first_seg_field $vg/$lv1 segtype "raid5_ls"
check lv_first_seg_field $vg/$lv1 stripesize "64.00k"
check lv_first_seg_field $vg/$lv1 data_stripes 15
check lv_first_seg_field $vg/$lv1 stripes 16

df
rm -fr "$mount_dir/[12]"

sync

umount "$mount_dir"

fsck -fn "$DM_DEV_DIR/$vg/$lv1"

vgremove -ff $vg
