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lvm2/test/shell/pvmove-basic.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) 2008-2013 Red Hat, Inc. All rights reserved.
# Copyright (C) 2007 NEC Corporation
#
# 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
test_description="ensure that pvmove works with basic options"
. lib/inittest
which md5sum || skip
# disable lvmetad logging as it bogs down test systems
test -e LOCAL_LVMETAD && aux prepare_lvmetad ""
# ---------------------------------------------------------------------
# Utilities
create_vg_() {
vgcreate -c n -s 128k $vg $(cat DEVICES)
}
# ---------------------------------------------------------------------
# Common environment setup/cleanup for each sub testcases
prepare_lvs_() {
lvcreate -l2 -n $lv1 $vg "$dev1"
check lv_on $vg $lv1 "$dev1"
lvcreate -l9 -i3 -n $lv2 $vg "$dev2" "$dev3" "$dev4"
check lv_on $vg $lv2 "$dev2" "$dev3" "$dev4"
lvextend -l+2 $vg/$lv1 "$dev2"
check lv_on $vg $lv1 "$dev1" "$dev2"
lvextend -l+2 $vg/$lv1 "$dev3"
lvextend -l+2 $vg/$lv1 "$dev1"
check lv_on $vg $lv1 "$dev1" "$dev2" "$dev3"
lvcreate -l1 -n $lv3 $vg "$dev2"
check lv_on $vg $lv3 "$dev2"
aux mkdev_md5sum $vg $lv1
aux mkdev_md5sum $vg $lv2
aux mkdev_md5sum $vg $lv3
get lv_devices "$vg/$lv1" > "${lv1}_devs"
get lv_devices "$vg/$lv2" > "${lv2}_devs"
get lv_devices "$vg/$lv3" > "${lv3}_devs"
lvs -a -o name,size,seg_pe_ranges $vg
vgcfgbackup -f bak-$$ $vg
}
# Restore metadata content, since data are pvmove-ed
# original content should be preserved
restore_lvs_() {
vgcfgrestore -f bak-$$ $vg
vgchange -ay $vg
}
lvs_not_changed_() {
for i in "${@}"; do
get lv_devices "$vg/$i" | tee out
diff "${i}_devs" out || \
(cat "${i}_devs"; die "Devices for LV $vg/$i differs!")
done
}
check_and_cleanup_lvs_() {
check dev_md5sum $vg $lv1
check dev_md5sum $vg $lv2
check dev_md5sum $vg $lv3
get lv_field $vg name -a >out
not grep "^\[pvmove" out
vgchange -an $vg
lvremove -ff $vg
(dm_table | not grep $vg) || \
die "ERROR: lvremove did leave some mappings in DM behind!"
}
# ---------------------------------------------------------------------
# Initialize PVs and VGs
aux prepare_pvs 5 5
create_vg_
for mode in "--atomic" ""
do
#COMM "check environment setup/cleanup"
prepare_lvs_
check_and_cleanup_lvs_
# ---------------------------------------------------------------------
# pvmove tests
# ---
# filter by LV
#COMM "only specified LV is moved: from pv2 to pv5 only for lv1"
restore_lvs_
pvmove $mode -i1 -n $vg/$lv1 "$dev2" "$dev5"
check lv_on $vg $lv1 "$dev1" "$dev5" "$dev3"
lvs_not_changed_ $lv2 $lv3
check_and_cleanup_lvs_
# ---
# segments in a LV
#COMM "the 1st seg of 3-segs LV is moved: from pv1 of lv1 to pv4"
restore_lvs_
pvmove $mode -i0 -n $vg/$lv1 "$dev1" "$dev4"
check lv_on $vg $lv1 "$dev4" "$dev2" "$dev3"
lvs_not_changed_ $lv2 $lv3
check_and_cleanup_lvs_
#COMM "the 2nd seg of 3-segs LV is moved: from pv2 of lv1 to pv4"
restore_lvs_
pvmove $mode -i0 -n $vg/$lv1 "$dev2" "$dev4"
check lv_on $vg $lv1 "$dev1" "$dev4" "$dev3"
lvs_not_changed_ $lv2 $lv3
check_and_cleanup_lvs_
#COMM "the 3rd seg of 3-segs LV is moved: from pv3 of lv1 to pv4"
restore_lvs_
pvmove $mode -i0 -n $vg/$lv1 "$dev3" "$dev4"
check lv_on $vg $lv1 "$dev1" "$dev2" "$dev4"
lvs_not_changed_ $lv2 $lv3
check_and_cleanup_lvs_
# ---
# multiple LVs matching
#COMM "1 out of 3 LVs is moved: from pv4 to pv5"
restore_lvs_
pvmove $mode -i0 "$dev4" "$dev5"
check lv_on $vg $lv2 "$dev2" "$dev3" "$dev5"
lvs_not_changed_ $lv1 $lv3
check_and_cleanup_lvs_
#COMM "2 out of 3 LVs are moved: from pv3 to pv5"
restore_lvs_
pvmove $mode -i0 "$dev3" "$dev5"
check lv_on $vg $lv1 "$dev1" "$dev2" "$dev5"
check lv_on $vg $lv2 "$dev2" "$dev5" "$dev4"
lvs_not_changed_ $lv3
check_and_cleanup_lvs_
#COMM "3 out of 3 LVs are moved: from pv2 to pv5"
restore_lvs_
pvmove $mode -i0 "$dev2" "$dev5"
check lv_on $vg $lv1 "$dev1" "$dev5" "$dev3"
check lv_on $vg $lv2 "$dev5" "$dev3" "$dev4"
check lv_on $vg $lv3 "$dev5"
check_and_cleanup_lvs_
# ---
# areas of striping
#COMM "move the 1st stripe: from pv2 of lv2 to pv1"
restore_lvs_
pvmove $mode -i0 -n $vg/$lv2 "$dev2" "$dev1"
check lv_on $vg $lv2 "$dev1" "$dev3" "$dev4"
lvs_not_changed_ $lv1 $lv3
check_and_cleanup_lvs_
#COMM "move the 2nd stripe: from pv3 of lv2 to pv1"
restore_lvs_
pvmove $mode -i0 -n $vg/$lv2 "$dev3" "$dev1"
check lv_on $vg $lv2 "$dev2" "$dev1" "$dev4"
lvs_not_changed_ $lv1 $lv3
check_and_cleanup_lvs_
#COMM "move the 3rd stripe: from pv4 of lv2 to pv1"
restore_lvs_
pvmove $mode -i0 -n $vg/$lv2 "$dev4" "$dev1"
check lv_on $vg $lv2 "$dev2" "$dev3" "$dev1"
lvs_not_changed_ $lv1 $lv3
check_and_cleanup_lvs_
# ---
# partial segment match (source segment splitted)
#COMM "match to the start of segment:from pv2:0-0 to pv5"
restore_lvs_
pvmove $mode -i0 "$dev2":0-0 "$dev5"
check lv_on $vg $lv2 "$dev5" "$dev2" "$dev3" "$dev4"
lvs_not_changed_ $lv1 $lv3
check_and_cleanup_lvs_
#exit 0
#COMM "match to the middle of segment: from pv2:1-1 to pv5"
restore_lvs_
pvmove $mode -i0 "$dev2":1-1 "$dev5"
check lv_on $vg $lv2 "$dev2" "$dev3" "$dev4" "$dev5"
lvs_not_changed_ $lv1 $lv3
check_and_cleanup_lvs_
#COMM "match to the end of segment: from pv2:2-2 to pv5"
restore_lvs_
pvmove $mode -i0 "$dev2":2-2 "$dev5"
check lv_on $vg $lv2 "$dev2" "$dev5" "$dev3" "$dev4"
lvs_not_changed_ $lv1 $lv3
check_and_cleanup_lvs_
# ---
# destination segment splitted
#COMM "no destination split: from pv2:0-2 to pv5"
restore_lvs_
pvmove $mode -i0 "$dev2":0-2 "$dev5"
check lv_on $vg $lv2 "$dev5" "$dev3" "$dev4"
lvs_not_changed_ $lv1 $lv3
check_and_cleanup_lvs_
#COMM "destination split into 2: from pv2:0-2 to pv5:5-5 and pv4:5-6"
restore_lvs_
pvmove $mode -i0 --alloc anywhere "$dev2":0-2 "$dev5":5-5 "$dev4":5-6
check lv_on $vg $lv2 "$dev5" "$dev4" "$dev3"
lvs_not_changed_ $lv1 $lv3
check_and_cleanup_lvs_
#COMM "destination split into 3: from pv2:0-2 to {pv3,4,5}:5-5"
restore_lvs_
pvmove $mode -i0 --alloc anywhere "$dev2":0-2 "$dev3":5-5 "$dev4":5-5 "$dev5":5-5
check lv_on $vg $lv2 "$dev3" "$dev4" "$dev5"
lvs_not_changed_ $lv1 $lv3
check_and_cleanup_lvs_
# ---
# alloc policy (anywhere, contiguous) with both success and failure cases
#COMM "alloc normal on same PV for source and destination: from pv3:0-2 to pv3:5-7"
restore_lvs_
not pvmove $mode -i0 "$dev3":0-2 "$dev3":5-7
# "(cleanup previous test)"
lvs_not_changed_ $lv1 $lv2 $lv3
check_and_cleanup_lvs_
#COMM "alloc anywhere on same PV for source and destination: from pv3:0-2 to pv3:5-7"
restore_lvs_
pvmove $mode -i0 --alloc anywhere "$dev3":0-2 "$dev3":5-7
check lv_on $vg $lv2 "$dev2" "$dev3" "$dev4"
lvs_not_changed_ $lv1 $lv3
check_and_cleanup_lvs_
#COMM "alloc anywhere but better area available: from pv3:0-2 to pv3:5-7 or pv5:5-6,pv4:5-5"
restore_lvs_
#lvs -a -o name,size,seg_pe_ranges $vg
#LV2 1.12m @TESTDIR@/dev/mapper/@PREFIX@pv2:0-2 @TESTDIR@/dev/mapper/@PREFIX@pv3:0-2 @TESTDIR@/dev/mapper/@PREFIX@pv4:0-2
pvmove $mode -i0 --alloc anywhere "$dev3":0-2 "$dev3":5-7 "$dev5":5-6 "$dev4":5-5
#lvs -a -o name,size,seg_pe_ranges $vg
# Hmm is this correct ? - why pv2 is split
#LV2 1.12m @TESTDIR@/dev/mapper/@PREFIX@pv2:0-1 @TESTDIR@/dev/mapper/@PREFIX@pv5:5-6 @TESTDIR@/dev/mapper/@PREFIX@pv4:0-1
#LV2 1.12m @TESTDIR@/dev/mapper/@PREFIX@pv2:2-2 @TESTDIR@/dev/mapper/@PREFIX@pv3:5-5 @TESTDIR@/dev/mapper/@PREFIX@pv4:2-2
check lv_on $vg $lv2 "$dev2" "$dev3" "$dev4" "$dev5"
lvs_not_changed_ $lv1 $lv3
check_and_cleanup_lvs_
#COMM "alloc contiguous but area not available: from pv2:0-2 to pv5:5-5 and pv4:5-6"
restore_lvs_
not pvmove $mode -i0 --alloc contiguous "$dev2":0-2 "$dev5":5-5 "$dev4":5-6
# "(cleanup previous test)"
lvs_not_changed_ $lv1 $lv2 $lv3
check_and_cleanup_lvs_
#COMM "alloc contiguous and contiguous area available: from pv2:0-2 to pv5:0-0,pv5:3-5 and pv4:5-6"
restore_lvs_
pvmove $mode -i0 --alloc contiguous "$dev2":0-2 "$dev5":0-0 "$dev5":3-5 "$dev4":5-6
check lv_on $vg $lv2 "$dev5" "$dev3" "$dev4"
lvs_not_changed_ $lv1 $lv3
check_and_cleanup_lvs_
# ---
# multiple segments in a LV
#COMM "multiple source LVs: from pv3 to pv5"
restore_lvs_
pvmove $mode -i0 "$dev3" "$dev5"
check lv_on $vg $lv1 "$dev1" "$dev2" "$dev5"
check lv_on $vg $lv2 "$dev2" "$dev5" "$dev4"
lvs_not_changed_ $lv3
check_and_cleanup_lvs_
# ---
# move inactive LV
#COMM "move inactive LV: from pv2 to pv5"
restore_lvs_
lvchange -an $vg/$lv1
lvchange -an $vg/$lv3
pvmove $mode -i0 "$dev2" "$dev5"
check lv_on $vg $lv1 "$dev1" "$dev5" "$dev3"
check lv_on $vg $lv2 "$dev5" "$dev3" "$dev4"
check lv_on $vg $lv3 "$dev5"
check_and_cleanup_lvs_
# ---
# other failure cases
#COMM "no PEs to move: from pv3 to pv1"
restore_lvs_
pvmove $mode -i0 "$dev3" "$dev1"
not pvmove $mode -i0 "$dev3" "$dev1"
# "(cleanup previous test)"
check lv_on $vg $lv1 "$dev1" "$dev2" "$dev1"
check lv_on $vg $lv2 "$dev2" "$dev1" "$dev4"
lvs_not_changed_ $lv3
check_and_cleanup_lvs_
#COMM "no space available: from pv2:0-0 to pv1:0-0"
restore_lvs_
not pvmove $mode -i0 "$dev2":0-0 "$dev1":0-0
# "(cleanup previous test)"
lvs_not_changed_ $lv1 $lv2 $lv3
check_and_cleanup_lvs_
#COMM 'same source and destination: from pv1 to pv1'
restore_lvs_
not pvmove $mode -i0 "$dev1" "$dev1"
#"(cleanup previous test)"
lvs_not_changed_ $lv1 $lv2 $lv3
check_and_cleanup_lvs_
#COMM "sum of specified destination PEs is large enough, but it includes source PEs and the free PEs are not enough"
restore_lvs_
not pvmove $mode --alloc anywhere "$dev1":0-2 "$dev1":0-2 "$dev5":0-0 2> err
#"(cleanup previous test)"
grep "Insufficient free space" err
lvs_not_changed_ $lv1 $lv2 $lv3
check_and_cleanup_lvs_
# ---------------------------------------------------------------------
#COMM "pvmove abort"
restore_lvs_
LVM_TEST_TAG="kill_me_$PREFIX" pvmove $mode -i100 -b "$dev1" "$dev3"
pvmove --abort
check_and_cleanup_lvs_
#COMM "pvmove out of --metadatacopies 0 PV (bz252150)"
vgremove -ff $vg
pvcreate $(cat DEVICES)
pvcreate --metadatacopies 0 "$dev1" "$dev2"
create_vg_
lvcreate -l4 -n $lv1 $vg "$dev1"
pvmove $mode "$dev1"
#COMM "pvmove fails activating mirror, properly restores state before pvmove"
dmsetup create $vg-pvmove0 --notable
not pvmove $mode -i 1 "$dev2"
dmsetup info --noheadings -c -o suspended $vg-$lv1
test $(dmsetup info --noheadings -c -o suspended $vg-$lv1) = "Active"
if dmsetup info $vg-pvmove0_mimage_0 > /dev/null; then
dmsetup remove $vg-pvmove0 $vg-pvmove0_mimage_0 $vg-pvmove0_mimage_1
else
dmsetup remove $vg-pvmove0
fi
lvremove -ff $vg
done