| #!/bin/sh |
| # Copyright (C) 2010-2012 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, MA 02110-1301 USA |
| |
| SKIP_WITH_LVMLOCKD=1 |
| SKIP_WITH_LVMPOLLD=1 |
| |
| . lib/inittest |
| |
| extend() { |
| lvextend --use-policies --config "activation { snapshot_autoextend_threshold = $1 }" $vg/snap |
| } |
| |
| write_() { |
| dd if=/dev/zero of="$DM_DEV_DIR/$vg/snap" bs=1k count=$2 seek=$1 oflag=direct |
| } |
| |
| percent_() { |
| get lv_field $vg/snap snap_percent | cut -d. -f1 |
| } |
| |
| wait_for_change_() { |
| # dmeventd only checks every 10 seconds :( |
| for i in $(seq 1 25) ; do |
| test "$(percent_)" != "$1" && return |
| sleep 1 |
| done |
| |
| return 1 # timeout |
| } |
| |
| aux prepare_dmeventd |
| aux prepare_vg 2 |
| |
| lvcreate -aey -L16M -n base $vg |
| lvcreate -s -L4M -n snap $vg/base |
| |
| write_ 0 1000 |
| test 24 -eq $(percent_) |
| |
| lvchange --monitor y $vg/snap |
| |
| write_ 1000 1700 |
| pre=$(percent_) |
| # Normally the usage should be ~66% here, however on slower systems |
| # dmeventd could be actually 'fast' enough to have COW already resized now |
| # so mark test skipped if we are below 50% by now |
| test $pre -gt 50 || skip |
| wait_for_change_ $pre |
| test $pre -gt $(percent_) |
| |
| # check that a second extension happens; we used to fail to extend when the |
| # utilisation ended up between THRESH and (THRESH + 10)... see RHBZ 754198 |
| # (the utilisation after the write should be 57 %) |
| |
| write_ 2700 2000 |
| pre=$(percent_) |
| # Mark test as skipped if already resized... |
| test $pre -gt 70 || skip |
| wait_for_change_ $pre |
| test $pre -gt $(percent_) |
| |
| vgremove -f $vg |