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#!/usr/bin/env bash
# Copyright (C) 2018 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
# Test writecache usage
SKIP_WITH_LVMPOLLD=1
SKIP_WITH_LOW_SPACE=1100
. lib/inittest
aux have_integrity 1 5 0 || skip
which mkfs.xfs || skip
mnt="mnt"
mkdir -p $mnt
# raid1 LV needs to be extended to 512MB to test imeta being extended
aux prepare_devs 4 632
# this test may consume lot of disk space - so make sure cleaning works
# also in failure case
cleanup_mounted_and_teardown()
{
umount "$mnt" 2>/dev/null || true
# Comment out this 'vgremove' when there is any need to analyze
# content of the failed test dir, otherwise all is deleted.
vgremove -ff $vg || true
aux teardown
}
trap 'cleanup_mounted_and_teardown' EXIT
# Use awk instead of anoyingly long log out from printf
#printf "%0.sA" {1..16384} >> fileA
awk 'BEGIN { while (z++ < 16384) printf "A" }' > fileA
awk 'BEGIN { while (z++ < 16384) printf "B" }' > fileB
awk 'BEGIN { while (z++ < 16384) printf "C" }' > fileC
# generate random data
dd if=/dev/urandom of=randA bs=512K count=2
dd if=/dev/urandom of=randB bs=512K count=3
dd if=/dev/urandom of=randC bs=512K count=4
_prepare_vg() {
vgcreate $SHARED $vg "$dev1" "$dev2"
pvs
}
_add_data_to_lv() {
mkfs.xfs -f "$DM_DEV_DIR/$vg/$lv1"
mount "$DM_DEV_DIR/$vg/$lv1" $mnt
# add original data
cp randA $mnt
cp randB $mnt
cp randC $mnt
mkdir $mnt/1
cp fileA $mnt/1
cp fileB $mnt/1
cp fileC $mnt/1
mkdir $mnt/2
cp fileA $mnt/2
cp fileB $mnt/2
cp fileC $mnt/2
umount $mnt
}
_verify_data_on_lv() {
mount "$DM_DEV_DIR/$vg/$lv1" $mnt
diff randA $mnt/randA
diff randB $mnt/randB
diff randC $mnt/randC
diff fileA $mnt/1/fileA
diff fileB $mnt/1/fileB
diff fileC $mnt/1/fileC
diff fileA $mnt/2/fileA
diff fileB $mnt/2/fileB
diff fileC $mnt/2/fileC
umount $mnt
}
# lvextend to 512MB is needed for the imeta LV to
# be extended from 4MB to 8MB.
_prepare_vg
lvcreate --type raid1 -m1 -n $lv1 -L 300 $vg
lvchange -an $vg/$lv1
lvchange -ay $vg/$lv1
_add_data_to_lv
# lv needs to be inactive when adding integrity to increase LBS from 512 and get a ribs of 4k
lvchange -an $vg/$lv1
lvconvert --raidintegrity y $vg/$lv1
lvchange -ay $vg/$lv1
aux wait_recalc $vg/${lv1}_rimage_0
aux wait_recalc $vg/${lv1}_rimage_1
lvs -a -o+devices $vg
_verify_data_on_lv
lvchange -an $vg/$lv1
lvextend -L 512M $vg/$lv1
lvs -a -o+devices $vg
lvchange -ay $vg/$lv1
_verify_data_on_lv
aux wait_recalc $vg/${lv1}_rimage_0
aux wait_recalc $vg/${lv1}_rimage_1
lvs -a -o+devices $vg
check lv_field $vg/${lv1}_rimage_0_imeta size "12.00m"
check lv_field $vg/${lv1}_rimage_1_imeta size "12.00m"
# provide space to extend the images onto new devs
vgextend $vg "$dev3" "$dev4"
# extending the images is possible using dev3,dev4
# but extending imeta on the existing dev1,dev2 fails
not lvextend -L +512M $vg/$lv1
# removing integrity will permit extending the images
# using dev3,dev4 since imeta limitation is gone
lvconvert --raidintegrity n $vg/$lv1
lvextend -L +512M $vg/$lv1
lvs -a -o+devices $vg
# adding integrity again will allocate new 12MB imeta LVs
# on dev3,dev4
lvconvert --raidintegrity y $vg/$lv1
aux wait_recalc $vg/${lv1}_rimage_0
aux wait_recalc $vg/${lv1}_rimage_1
lvs -a -o+devices $vg
check lv_field $vg/${lv1}_rimage_0_imeta size "20.00m"
check lv_field $vg/${lv1}_rimage_1_imeta size "20.00m"
lvchange -an $vg/$lv1
lvremove $vg/$lv1
# As the test doesn't wait for full resync
# delay legs so not all data need to be written.
aux delay_dev "$dev1" 400 0 "$(( $(get first_extent_sector "$dev1") + 16000 )):1200000"
aux delay_dev "$dev2" 0 10 "$(( $(get first_extent_sector "$dev2") + 16000 )):1200000"
# this succeeds because dev1,dev2 can hold rmeta+rimage
lvcreate --type raid1 -n $lv1 -L 592M -an $vg "$dev1" "$dev2"
lvs -a -o+devices $vg
lvremove $vg/$lv1
# this fails because dev1,dev2 can hold rmeta+rimage, but not imeta
# and we require imeta to be on same devs as rmeta/rimeta
not lvcreate --type raid1 --raidintegrity y -n $lv1 -L 624M -an $vg "$dev1" "$dev2"
lvs -a -o+devices $vg
# this can allocate from more devs so there's enough space for imeta to
# be allocated in the vg, but lvcreate fails because rmeta+rimage are
# allocated from dev1,dev2, we restrict imeta to being allocated on the
# same devs as rmeta/rimage, and dev1,dev2 can't fit imeta.
not lvcreate --type raid1 --raidintegrity y -n $lv1 -L 624M -an $vg
lvs -a -o+devices $vg
# counterintuitively, increasing the size will allow lvcreate to succeed
# because rmeta+rimage are pushed to being allocated on dev1,dev2,dev3,dev4
# which means imeta is now free to be allocated from dev3,dev4 which have
# plenty of space
lvcreate --type raid1 --raidintegrity y -n $lv1 -L 640M -an $vg
lvs -a -o+devices $vg
vgremove -ff $vg
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