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63 lines
1.4 KiB
Bash
63 lines
1.4 KiB
Bash
#!/bin/sh
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# Copyright (C) 2010-2012 Red Hat, Inc. All rights reserved.
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#
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# This copyrighted material is made available to anyone wishing to use,
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# modify, copy, or redistribute it subject to the terms and conditions
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# of the GNU General Public License v.2.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software Foundation,
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# Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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. lib/inittest
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extend() {
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lvextend --use-policies --config "activation { snapshot_autoextend_threshold = $1 }" $vg/snap
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}
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write_() {
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dd if=/dev/zero of="$DM_DEV_DIR/$vg/snap" bs=1k count=$2 seek=$1
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sync
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}
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percent_() {
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get lv_field $vg/snap snap_percent | cut -d. -f1
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}
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wait_for_change_() {
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# dmeventd only checks every 10 seconds :(
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for i in $(seq 1 15) ; do
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test "$(percent_)" != "$1" && return
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sleep 1
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done
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return 1 # timeout
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}
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aux prepare_dmeventd
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aux prepare_vg 2
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lvcreate -aey -L16M -n base $vg
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lvcreate -s -L4M -n snap $vg/base
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write_ 0 1000
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test 24 -eq $(percent_)
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lvchange --monitor y $vg/snap
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write_ 1000 1700
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pre=$(percent_)
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wait_for_change_ $pre
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test $pre -gt $(percent_)
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# check that a second extension happens; we used to fail to extend when the
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# utilisation ended up between THRESH and (THRESH + 10)... see RHBZ 754198
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# (the utilisation after the write should be 57 %)
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write_ 2700 2000
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pre=$(percent_)
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wait_for_change_ $pre
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test $pre -gt $(percent_)
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vgremove -f $vg
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