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test/shell/thin-16g.sh | 88 ++++++++++++++++++++++++++++++++++++++++++++++++++
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1 file changed, 88 insertions(+)
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create mode 100644 test/shell/thin-16g.sh
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diff --git a/test/shell/thin-16g.sh b/test/shell/thin-16g.sh
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new file mode 100644
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index 0000000..ee7e22e
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--- /dev/null
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+++ b/test/shell/thin-16g.sh
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@@ -0,0 +1,88 @@
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+#!/usr/bin/env bash
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+
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+# Copyright (C) 2021 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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+
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+# Test usability of 16g thin pool metadata LV
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+
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+
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+SKIP_WITH_LVMPOLLD=1
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+
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+. lib/inittest
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+
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+aux have_thin 1 0 0 || skip
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+
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+aux prepare_vg 1 50000
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+
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+lvcreate -T -L10 --poolmetadatasize 16g $vg/pool
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+check lv_field $vg/pool_tmeta size "<15.88g"
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+lvremove -f $vg
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+
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+# Cropped way
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+lvcreate -T -L10 --poolmetadatasize 16g --config 'allocation/thin_pool_crop_metadata=1' $vg/pool
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+check lv_field $vg/pool_tmeta size "15.81g"
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+lvremove -f $vg
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+
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+lvcreate -L16G -n meta $vg
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+lvcreate -L10 -n pool $vg
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+lvconvert --yes --thinpool $vg/pool --poolmetadata meta
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+# Uncropped size 33554432 sectors - 16GiB
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+dmsetup table ${vg}-pool_tmeta | grep 33554432
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+lvremove -f $vg
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+
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+# Uses 20G metadata volume, but crops the size in DM table
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+lvcreate -L20G -n meta $vg
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+lvcreate -L10 -n pool $vg
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+lvconvert --yes --thinpool $vg/pool --poolmetadata meta --config 'allocation/thin_pool_crop_metadata=1'
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+check lv_field $vg/lvol0_pmspare size "16.00g"
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+# Size should be cropped to 33161216 sectors ~15.81GiB
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+dmsetup table ${vg}-pool_tmeta | grep 33161216
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+
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+# Also size remains unchanged with activation has no cropping,
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+# but metadata have no CROP_METADATA flag set
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+lvchange -an $vg
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+lvchange -ay $vg
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+# Size still stays cropped to 33161216 sectors ~15.81GiB
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+dmsetup table ${vg}-pool_tmeta | grep 33161216
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+lvremove -f $vg
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+
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+# Minimal size is 2M
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+lvcreate -L1M -n meta $vg
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+lvcreate -L10 -n pool $vg
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+not lvconvert --yes --thinpool $vg/pool --poolmetadata meta
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+lvremove -f $vg
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+
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+# Uses 20G metadata volume, but crops the size in DM table
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+lvcreate -L1 --poolmetadatasize 10G -T $vg/pool
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+lvresize -L+10G $vg/pool_tmeta --config 'allocation/thin_pool_crop_metadata=1'
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+check lv_field $vg/lvol0_pmspare size "15.81g"
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+# Size should be cropped to 33161216 sectors ~15.81GiB
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+dmsetup table ${vg}-pool_tmeta | grep 33161216
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+
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+# Without cropping we can grop to ~15.88GiB
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+lvresize -L+10G $vg/pool_tmeta
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+check lv_field $vg/lvol0_pmspare size "<15.88g"
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+lvremove -f $vg
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+
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+# User has already 'bigger' metadata and wants them uncropped
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+lvcreate -L16G -n meta $vg
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+lvcreate -L10 -n pool $vg
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+lvconvert --yes --thinpool $vg/pool --poolmetadata meta --config 'allocation/thin_pool_crop_metadata=1'
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+
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+# No change with cropping
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+lvresize -l+1 $vg/pool_tmeta --config 'allocation/thin_pool_crop_metadata=1'
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+dmsetup table ${vg}-pool_tmeta | grep 33161216
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+
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+# Resizes to 'uncropped' size 16GiB with ANY size
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+lvresize -l+1 $vg/pool_tmeta
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+dmsetup table ${vg}-pool_tmeta | grep 33554432
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+check lv_field $vg/pool_tmeta size "16.00g"
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+
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+vgremove -ff $vg
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