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git://sourceware.org/git/lvm2.git
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208 lines
6.2 KiB
Bash
208 lines
6.2 KiB
Bash
#!/usr/bin/env bash
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# Copyright (C) 2014-2020 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 autoextension of thin metadata volume
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SKIP_WITH_LVMLOCKD=1
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SKIP_WITH_LVMPOLLD=1
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export LVM_TEST_THIN_REPAIR_CMD=${LVM_TEST_THIN_REPAIR_CMD-/bin/false}
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. lib/inittest
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meta_percent_() {
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get lv_field $vg/pool metadata_percent | cut -d. -f1
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}
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wait_for_change_() {
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# dmeventd only checks every 10 seconds :(
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for i in $(seq 1 12) ; do
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test "$(meta_percent_)" -lt "$1" && return
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sleep 1
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done
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return 1 # timeout
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}
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#
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# Temporary solution to create some occupied thin metadata
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# This heavily depends on thin metadata output format to stay as is.
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# Currently it expects 2MB thin metadata and 200MB data volume size
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# Argument specifies how many devices should be created.
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fake_metadata_() {
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echo '<superblock uuid="" time="0" transaction="'$2'" data_block_size="128" nr_data_blocks="3200">'
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echo ' <device dev_id="1" mapped_blocks="0" transaction="0" creation_time="0" snap_time="0">'
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echo ' </device>'
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echo ' <device dev_id="2" mapped_blocks="0" transaction="0" creation_time="0" snap_time="0">'
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echo ' </device>'
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for i in $(seq 10 $1)
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do
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echo ' <device dev_id="'$i'" mapped_blocks="30" transaction="0" creation_time="0" snap_time="0">'
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echo ' <range_mapping origin_begin="0" data_begin="0" length="30" time="0"/>'
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echo ' </device>'
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set +x
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done
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echo "</superblock>"
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set -x
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}
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test -n "$LVM_TEST_THIN_RESTORE_CMD" || LVM_TEST_THIN_RESTORE_CMD=$(which thin_restore) || skip
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"$LVM_TEST_THIN_RESTORE_CMD" -V || skip
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aux have_thin 1 10 0 || skip
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BIG_DATA=""
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aux thin_restore_needs_more_volumes && BIG_DATA="generate_more_metadata"
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aux prepare_dmeventd
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aux prepare_pvs 3 256
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get_devs
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vgcreate -s 1M "$vg" "${DEVICES[@]}"
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# Testing dmeventd does NOT autoresize when default threshold 100% is left
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lvcreate -L200M -V50M -n thin -T $vg/pool
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lvcreate -V2M -n thin2 $vg/pool
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lvcreate -L2M -n $lv1 $vg
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lvcreate -L32M -n $lv2 $vg
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lvcreate -L32M -n $lv3 $vg
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lvchange -an $vg/thin $vg/thin2 $vg/pool
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# Filling 2M metadata volume
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# (Test for less than 25% free space in metadata)
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fake_metadata_ 400 2 >data
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"$LVM_TEST_THIN_RESTORE_CMD" -i data -o "$DM_DEV_DIR/mapper/$vg-$lv1"
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# Swap volume with restored fake metadata
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lvconvert -y --chunksize 64k --thinpool $vg/pool --poolmetadata $vg/$lv1
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# Not alllowed when thin-pool metadata free space is <75% for 2M meta
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fail lvcreate -V20 $vg/pool
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lvchange -an $vg/pool
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# Consume more then (100% - 4MiB) out of 32MiB metadata volume (>87.5%)
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# (Test for less than 4MiB free space in metadata, which is less than 25%)
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DATA=7200 # Newer version of thin-pool have hidden reserve, so use lower value
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test -z "$BIG_DATA" || DATA=7400
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fake_metadata_ "$DATA" 2 >data
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"$LVM_TEST_THIN_RESTORE_CMD" -i data -o "$DM_DEV_DIR/mapper/$vg-$lv2"
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# Check tha restored metadata are OK for thin_check
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"$LVM_TEST_THIN_CHECK_CMD" "$DM_DEV_DIR/mapper/$vg-$lv2"
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# Swap volume with restored fake metadata
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lvconvert -y --chunksize 64k --thinpool $vg/pool --poolmetadata $vg/$lv2
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lvchange -ay $vg/pool
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# Check generated metadata consume more then 88%
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test "$(meta_percent_)" -gt "88"
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lvchange -an $vg/pool
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# Creation of thin LV is prohibited when metadata are above this value
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fail lvcreate -V20 $vg/pool 2>&1 | tee out
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grep "free space" out
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lvs -a $vg
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# Check that even with 99% threshold policy - metadata will go below 88%
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lvextend --use-policies --config "\
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activation/thin_pool_autoextend_percent=1 \
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activation/thin_pool_autoextend_threshold=99" $vg/pool
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# Originaly wanted to test <88% -
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# however some older kernels consume a bit more space, so be happy
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# when it's <90%
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test "$(meta_percent_)" -lt "90"
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# After such operatoin creation of thin LV has to pass
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lvcreate -V20 $vg/pool
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# Let's revalidate pool metadata (thin_check upon deactivation/activation)
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lvchange -an $vg
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lvchange -ay $vg/pool
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lvremove -f $vg
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#########################################################
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# Test automatic resize with help of dmeventd DOES work #
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#########################################################
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aux lvmconf "activation/thin_pool_autoextend_percent = 10" \
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"activation/thin_pool_autoextend_threshold = 70"
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# Testing dmeventd autoresize
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lvcreate -L200M -V500M -n thin -T $vg/pool 2>&1 | tee out
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not grep "WARNING: Sum" out
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lvcreate -V2M -n thin2 $vg/pool
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lvcreate -L2M -n $lv1 $vg
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lvchange -an $vg/thin $vg/thin2 $vg/pool
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# Prepare some fake metadata with unmatching id
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# Transaction_id is lower by 1 and there are no messages -> ERROR
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fake_metadata_ 10 0 >data
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"$LVM_TEST_THIN_RESTORE_CMD" -i data -o "$DM_DEV_DIR/mapper/$vg-$lv1"
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lvconvert -y --thinpool $vg/pool --poolmetadata $vg/$lv1
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not vgchange -ay $vg 2>&1 | tee out
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grep expected out
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check inactive $vg pool_tmeta
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# Transaction_id is higher by 1
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fake_metadata_ 10 3 >data
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"$LVM_TEST_THIN_RESTORE_CMD" -i data -o "$DM_DEV_DIR/mapper/$vg-$lv1"
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lvconvert -y --thinpool $vg/pool --poolmetadata $vg/$lv1
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not vgchange -ay $vg 2>&1 | tee out
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grep expected out
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check inactive $vg pool_tmeta
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# Prepare some fake metadata prefilled to ~81% (>70%)
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fake_metadata_ 400 2 >data
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"$LVM_TEST_THIN_RESTORE_CMD" -i data -o "$DM_DEV_DIR/mapper/$vg-$lv1"
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# Swap volume with restored fake metadata
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lvconvert -y --chunksize 64k --thinpool $vg/pool --poolmetadata $vg/$lv1
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vgchange -ay $vg
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# Check dmeventd resizes metadata via timeout (nothing is written to pool)
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pre=$(meta_percent_)
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wait_for_change_ $pre
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lvchange -an $vg
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#
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DATA=300 # Newer version of thin-pool have hidden reserve, so use lower value
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test -z "$BIG_DATA" || DATA=350
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fake_metadata_ $DATA 2 >data
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lvchange -ay $vg/$lv1
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"$LVM_TEST_THIN_RESTORE_CMD" -i data -o "$DM_DEV_DIR/mapper/$vg-$lv1"
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lvconvert -y --chunksize 64k --thinpool $vg/pool --poolmetadata $vg/$lv1
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lvchange -ay $vg/pool $vg/$lv1
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lvs -a $vg
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lvcreate -s -Ky -n $lv2 $vg/thin
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pre=$(meta_percent_)
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# go over thin metadata threshold
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echo 2 >"$DM_DEV_DIR/mapper/$vg-$lv2"
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wait_for_change_ $pre
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lvs -a $vg
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vgremove -f $vg
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