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937f1d3209
Different sequences of steps that could be used to handle raid LVs after VG takeover (what would happen in cluster failover) combined with the loss of a disk.
172 lines
4.3 KiB
Bash
172 lines
4.3 KiB
Bash
#!/usr/bin/env bash
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# Copyright (C) 2015 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_description='Test VG takeover with raid LVs'
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# test does not apply to lvmlockd
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SKIP_WITH_LVMLOCKD=1
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SKIP_WITH_LVMPOLLD=1
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print_lvmlocal() {
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{ echo "local {"; printf "%s\n" "$@"; echo "}"; } >"$LVMLOCAL"
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}
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. lib/inittest
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aux prepare_devs 3 1024
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SIDFILE="etc/lvm_test.conf"
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LVMLOCAL="etc/lvmlocal.conf"
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DFDIR="$LVM_SYSTEM_DIR/devices"
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DF="$DFDIR/system.devices"
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# Avoid system id validation in the devices file
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# which gets in the way of the test switching the
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# local system id.
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clear_df_systemid() {
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if [[ -f $DF ]]; then
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sed -e "s|SYSTEMID=.||" "$DF" > tmpdf
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cp tmpdf $DF
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fi
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}
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SID1=sidfoofile1
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SID2=sidfoofile2
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echo "$SID1" > "$SIDFILE"
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clear_df_systemid
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aux lvmconf "global/system_id_source = file" \
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"global/system_id_file = \"$SIDFILE\""
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vgcreate $vg "$dev1" "$dev2" "$dev3"
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vgs -o+systemid,partial $vg
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check vg_field $vg systemid "$SID1"
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lvcreate --type raid1 -L 400 -m1 -n $lv1 $vg "$dev1" "$dev2"
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lvcreate --type raid1 -L 400 -m2 -n $lv2 $vg "$dev1" "$dev2" "$dev3"
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# give some time for raid init
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sleep 2
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lvs -a -o+devices $vg
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mkfs.xfs -f "$DM_DEV_DIR/$vg/$lv1"
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mkfs.xfs -f "$DM_DEV_DIR/$vg/$lv2"
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dd if=/dev/urandom of=pattern1 bs=512K count=1
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mount_dir="mnt_takeover"
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mkdir -p "$mount_dir"
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mount "$DM_DEV_DIR/$vg/$lv1" $mount_dir
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dd if=/dev/zero of=$mount_dir/file1 bs=4096 count=1024
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cp pattern1 $mount_dir/pattern1a
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cp pattern1 $mount_dir/pattern1b
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umount $mount_dir
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mount "$DM_DEV_DIR/$vg/$lv2" $mount_dir
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dd if=/dev/zero of=$mount_dir/file1 bs=4096 count=1024
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cp pattern1 $mount_dir/pattern1a
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cp pattern1 $mount_dir/pattern1b
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umount $mount_dir
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vgchange -an $vg
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# make the vg foreign
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vgchange --yes --systemid $SID2 $vg
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not vgs $vg
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# make one dev missing
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aux hide_dev "$dev1"
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# take over the vg, like cluster failover would do
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vgchange --majoritypvs --config "local/extra_system_ids=[\"${SID2}\"]" --systemid $SID1 $vg
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pvs -o+missing
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vgs -o+systemid,partial $vg
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lvs -a -o+devices $vg
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lvchange -ay --activationmode degraded $vg/$lv1
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lvchange -ay --activationmode degraded $vg/$lv2
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mount "$DM_DEV_DIR/$vg/$lv1" $mount_dir
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dd of=/dev/null if=$mount_dir/file1 bs=4096 count=1024
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diff pattern1 $mount_dir/pattern1a
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diff pattern1 $mount_dir/pattern1b
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rm $mount_dir/pattern1b
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rm $mount_dir/file1
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cp pattern1 $mount_dir/pattern1c
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umount $mount_dir
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mount "$DM_DEV_DIR/$vg/$lv2" $mount_dir
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dd of=/dev/null if=$mount_dir/file1 bs=4096 count=1024
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diff pattern1 $mount_dir/pattern1a
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diff pattern1 $mount_dir/pattern1b
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rm $mount_dir/pattern1b
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rm $mount_dir/file1
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cp pattern1 $mount_dir/pattern1c
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umount $mount_dir
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pvs -o+missing
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vgs -o+systemid,partial $vg
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lvs -a -o+devices $vg
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# replaces dev1 with dev3
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lvconvert -y --repair $vg/$lv1
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# no other disk to replace dev1 so remove the leg,
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# but that's not allowed until the missing disk is removed from the vg
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not lvconvert -y -m-1 $vg/$lv2
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vgreduce --removemissing --mirrorsonly --force $vg
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pvs -o+missing
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vgs -o+systemid,partial $vg
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lvs -a -o+devices $vg
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lvconvert -y -m-1 $vg/$lv2
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pvs -o+missing
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vgs -o+systemid,partial $vg
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lvs -a -o+devices $vg
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mount "$DM_DEV_DIR/$vg/$lv1" $mount_dir
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diff pattern1 $mount_dir/pattern1a
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diff pattern1 $mount_dir/pattern1c
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umount $mount_dir
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mount "$DM_DEV_DIR/$vg/$lv2" $mount_dir
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diff pattern1 $mount_dir/pattern1a
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diff pattern1 $mount_dir/pattern1c
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umount $mount_dir
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aux unhide_dev "$dev1"
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# put dev1 back into lv2,
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# requires clearing outdated metadata and putting dev1 back in vg
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vgck --updatemetadata $vg
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pvs -o+missing
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vgextend $vg "$dev1"
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pvs -o+missing
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lvconvert -y -m+1 $vg/$lv2 "$dev1"
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pvs -o+missing
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vgs -o+systemid,partial $vg
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lvs -a -o+devices $vg
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mount "$DM_DEV_DIR/$vg/$lv1" $mount_dir
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diff pattern1 $mount_dir/pattern1a
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diff pattern1 $mount_dir/pattern1c
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umount $mount_dir
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mount "$DM_DEV_DIR/$vg/$lv2" $mount_dir
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diff pattern1 $mount_dir/pattern1a
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diff pattern1 $mount_dir/pattern1c
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umount $mount_dir
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vgchange -an $vg
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vgremove -f $vg
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