mirror of
git://sourceware.org/git/lvm2.git
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184 lines
4.7 KiB
Bash
184 lines
4.7 KiB
Bash
#!/usr/bin/env bash
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# Copyright (C) 2018 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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# Test writecache usage
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SKIP_WITH_LVMPOLLD=1
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. lib/inittest
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aux have_integrity 1 5 0 || skip
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which mkfs.xfs || skip
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mnt="mnt"
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mkdir -p $mnt
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# raid1 LV needs to be extended to 512MB to test imeta being exended
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aux prepare_devs 4 600
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printf "%0.sA" {1..16384} >> fileA
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printf "%0.sB" {1..16384} >> fileB
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printf "%0.sC" {1..16384} >> fileC
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# generate random data
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dd if=/dev/urandom of=randA bs=512K count=2
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dd if=/dev/urandom of=randB bs=512K count=3
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dd if=/dev/urandom of=randC bs=512K count=4
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_prepare_vg() {
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vgcreate $SHARED $vg "$dev1" "$dev2"
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pvs
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}
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_add_data_to_lv() {
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mkfs.xfs -f "$DM_DEV_DIR/$vg/$lv1"
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mount "$DM_DEV_DIR/$vg/$lv1" $mnt
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# add original data
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cp randA $mnt
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cp randB $mnt
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cp randC $mnt
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mkdir $mnt/1
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cp fileA $mnt/1
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cp fileB $mnt/1
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cp fileC $mnt/1
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mkdir $mnt/2
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cp fileA $mnt/2
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cp fileB $mnt/2
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cp fileC $mnt/2
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umount $mnt
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}
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_verify_data_on_lv() {
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mount "$DM_DEV_DIR/$vg/$lv1" $mnt
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diff randA $mnt/randA
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diff randB $mnt/randB
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diff randC $mnt/randC
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diff fileA $mnt/1/fileA
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diff fileB $mnt/1/fileB
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diff fileC $mnt/1/fileC
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diff fileA $mnt/2/fileA
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diff fileB $mnt/2/fileB
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diff fileC $mnt/2/fileC
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umount $mnt
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}
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_sync_percent() {
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local checklv=$1
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get lv_field "$checklv" sync_percent | cut -d. -f1
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}
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_wait_recalc() {
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local checklv=$1
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for i in $(seq 1 10) ; do
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sync=$(_sync_percent "$checklv")
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echo "sync_percent is $sync"
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if test "$sync" = "100"; then
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return
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fi
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sleep 1
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done
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# TODO: There is some strange bug, first leg of RAID with integrity
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# enabled never gets in sync. I saw this in BB, but not when executing
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# the commands manually
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if test -z "$sync"; then
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echo "TEST WARNING: Resync of dm-integrity device '$checklv' failed"
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dmsetup status "$DM_DEV_DIR/mapper/${checklv/\//-}"
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exit
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fi
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echo "timeout waiting for recalc"
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return 1
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}
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# lvextend to 512MB is needed for the imeta LV to
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# be extended from 4MB to 8MB.
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_prepare_vg
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lvcreate --type raid1 -m1 -n $lv1 -l 8 $vg
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lvchange -an $vg/$lv1
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lvchange -ay $vg/$lv1
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_add_data_to_lv
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lvconvert --raidintegrity y $vg/$lv1
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_wait_recalc $vg/${lv1}_rimage_0
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_wait_recalc $vg/${lv1}_rimage_1
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lvs -a -o+devices $vg
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_verify_data_on_lv
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lvchange -an $vg/$lv1
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lvextend -L 512M $vg/$lv1
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lvs -a -o+devices $vg
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lvchange -ay $vg/$lv1
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_verify_data_on_lv
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_wait_recalc $vg/${lv1}_rimage_0
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_wait_recalc $vg/${lv1}_rimage_1
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lvs -a -o+devices $vg
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check lv_field $vg/${lv1}_rimage_0_imeta size "8.00m"
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check lv_field $vg/${lv1}_rimage_1_imeta size "8.00m"
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# provide space to extend the images onto new devs
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vgextend $vg "$dev3" "$dev4"
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# extending the images is possible using dev3,dev4
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# but extending imeta on the existing dev1,dev2 fails
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not lvextend -L +512M $vg/$lv1
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# removing integrity will permit extending the images
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# using dev3,dev4 since imeta limitation is gone
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lvconvert --raidintegrity n $vg/$lv1
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lvextend -L +512M $vg/$lv1
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lvs -a -o+devices $vg
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# adding integrity again will allocate new 12MB imeta LVs
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# on dev3,dev4
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lvconvert --raidintegrity y $vg/$lv1
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_wait_recalc $vg/${lv1}_rimage_0
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_wait_recalc $vg/${lv1}_rimage_1
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lvs -a -o+devices $vg
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check lv_field $vg/${lv1}_rimage_0_imeta size "12.00m"
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check lv_field $vg/${lv1}_rimage_1_imeta size "12.00m"
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lvchange -an $vg/$lv1
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lvremove $vg/$lv1
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# this succeeds because dev1,dev2 can hold rmeta+rimage
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lvcreate --type raid1 -n $lv1 -L 592M -an $vg "$dev1" "$dev2"
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# this fails because dev1,dev2 can hold rmeta+rimage, but not imeta
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# and we require imeta to be on same devs as rmeta/rimeta
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not lvcreate --type raid1 --raidintegrity y -n $lv1 -L 592M -an $vg "$dev1" "$dev2"
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lvs -a -o+devices $vg
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lvremove $vg/$lv1
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# this can allocate from more devs so there's enough space for imeta to
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# be allocated in the vg, but lvcreate fails because rmeta+rimage are
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# allocated from dev1,dev2, we restrict imeta to being allocated on the
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# same devs as rmeta/rimage, and dev1,dev2 can't fit imeta.
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not lvcreate --type raid1 --raidintegrity y -n $lv1 -L 592M -an $vg
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lvs -a -o+devices $vg
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# counterintuitively, increasing the size will allow lvcreate to succeed
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# because rmeta+rimage are pushed to being allocated on dev1,dev2,dev3,dev4
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# which means imeta is now free to be allocated from dev3,dev4 which have
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# plenty of space
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lvcreate --type raid1 --raidintegrity y -n $lv1 -L 600M -an $vg
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lvs -a -o+devices $vg
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vgremove -ff $vg
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