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lvm2/test/shell/pvmove-abort.sh
Ondrej Kozina 8c9ab2a4dd tests: simplify removal of dangling bg procs
some tests left dangling bg processes originating in
lvm2 commands being able to spawn any bg polling process
(lvchange, vgchange, pvmove, lvconvert...)

Initial fn 'add_to_kill_list' should collect processes with
specific parameters (proc's command line and parent processes ID).
After testing finishes the fn kill_listed_processes should remove these
listed by 'add_to_kill_list'.

Unfortunately it proved to be prone to an error especially in scenarios
where cmd line of initiating command contained characters required to
be espaced before passing to shell script to make it work correctly.
(Or if cmd spawned more than one bg process with same cmd line. i.e.:
vgchange or lvchange).

The new implementation is much simpler. It uses env. variable (LVM_TEST_TAG)
for marking a process desired to be killed later or during test env. teardown.
(i.e.: LVM_TEST_TAG=kill_me_$PREFIX to kill only processes related to
current test environment)
2015-04-28 22:31:40 +02:00

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#!/bin/sh
# Copyright (C) 2015 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
# Check pvmove --abort behaviour when specific device is requested
. lib/inittest
aux prepare_pvs 3 60
vgcreate -s 128k $vg "$dev1" "$dev2"
pvcreate --metadatacopies 0 "$dev3"
vgextend $vg "$dev3"
# Slowdown read/writes
aux delay_dev "$dev3" 0 800 $(get first_extent_sector "$dev3"):
for mode in "--atomic" "" ;
do
for backgroundarg in "-b" "" ;
do
# Create multisegment LV
lvcreate -an -Zn -l30 -n $lv1 $vg "$dev1"
lvcreate -an -Zn -l30 -n $lv2 $vg "$dev2"
cmd1=(pvmove -i1 $backgroundarg $mode "$dev1" "$dev3")
cmd2=(pvmove -i1 $backgroundarg $mode "$dev2" "$dev3")
if test -z "$backgroundarg" ; then
"${cmd1[@]}" &
aux wait_pvmove_lv_ready "$vg-pvmove0"
"${cmd2[@]}" &
aux wait_pvmove_lv_ready "$vg-pvmove1"
else
LVM_TEST_TAG="kill_me_$PREFIX" "${cmd1[@]}"
LVM_TEST_TAG="kill_me_$PREFIX" "${cmd2[@]}"
fi
# remove specific device
pvmove --abort "$dev1"
# check if proper pvmove was canceled
get lv_field $vg name -a | tee out
not grep "^\[pvmove0\]" out
grep "^\[pvmove1\]" out
# remove any remaining pvmoves in progress
pvmove --abort
lvremove -ff $vg
wait
aux kill_listed_processes
done
done
# Restore delayed device back
aux enable_dev "$dev3"
vgremove -ff $vg