#!/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 32

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 -L4 -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
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
cp -r /usr/bin "$mount_dir/1" &>/dev/null &
cp -r /usr/bin "$mount_dir/2" &>/dev/null &
sync &

aux wait_for_sync $vg $lv1
aux delay_dev "$dev2" 0 100

# Reshape it to 15 data stripes
lvconvert --yes --stripes 15 $vg/$lv1
aux disable_dev $dev1
aux delay_dev "$dev2" 0 50
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

kill -9 %%
wait
rm -fr "$mount_dir/[12]"

sync
umount "$mount_dir"

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

vgremove -ff $vg
