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#!/usr/bin/env bash
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# Copyright (C) 2012-2013 Red Hat, Inc. All rights reserved.
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#
# 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,
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# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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#
# test support of thin discards
#
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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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#
# Main
#
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aux have_thin 1 1 0 || skip
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aux lvmconf 'devices/scan_lvs = 1'
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aux prepare_vg 2 64
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get_devs
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aux extend_filter_LVMTEST
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# Create named pool only
lvcreate -l1 --discards ignore -T $vg /pool
check lv_field $vg /pool discards "ignore"
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check lv_field $vg /pool kernel_discards "ignore"
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lvcreate -l1 --discards nopassdown -T $vg /pool1
check lv_field $vg /pool1 discards "nopassdown"
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check lv_field $vg /pool1 kernel_discards "nopassdown"
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lvcreate -l1 --discards passdown -T $vg /pool2
check lv_field $vg /pool2 discards "passdown"
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check lv_field $vg /pool2 discards "passdown"
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lvchange --discards nopassdown $vg /pool2
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lvcreate -V1M -n origin -T $vg /pool
lvcreate -s $vg /origin -n snap
# Cannot convert active nopassdown -> ignore
not lvchange --discards nopassdown $vg /pool
# Cannot convert active ignore -> passdown
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not lvchange --discards passdown $vg /pool
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# Cannot convert active nopassdown -> ignore
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not lvchange --discards ignore $vg /pool1
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# Deactivate pool only
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lvchange -an $vg /pool $vg /pool1
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# Cannot convert, since thin volumes are still active
not lvchange --discards passdown $vg /pool
# Deactive thin volumes
lvchange -an $vg /origin $vg /snap
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lvchange --discards passdown $vg /pool
check lv_field $vg /pool discards "passdown"
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lvchange --discards ignore $vg /pool1
check lv_field $vg /pool1 discards "ignore"
vgremove -ff $vg
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# Create thin pool with discards set to "ignore".
# If we create a thin volume which we use for a PV
# which we use to create another thin pool on top
# with discards set to "passdown", the discards value
# in metadata is still "passdown", but because the
# device below does not support it, the kernel value
# of discards actually used will be "nopassdown".
# This is why we have "-o discards" and "-o kernel_discards".
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vgcreate $SHARED -s 1m " ${ vg } _1 " " ${ DEVICES [@] } "
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lvcreate -l 10 -T ${ vg } _1/pool --discards ignore
lvcreate -V 9m -T ${ vg } _1/pool -n device_with_ignored_discards
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vgcreate $SHARED -s 1m ${ vg } _2 " $DM_DEV_DIR / ${ vg } _1/device_with_ignored_discards "
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lvcreate -l 1 -T ${ vg } _2/pool --discards passdown
lvcreate -V 1 -T ${ vg } _2/pool
check lv_field ${ vg } _1/pool discards "ignore"
check lv_field ${ vg } _1/pool kernel_discards "ignore"
check lv_field ${ vg } _2/pool discards "passdown"
check lv_field ${ vg } _2/pool kernel_discards "nopassdown"
vgremove -ff ${ vg } _2
vgremove -ff ${ vg } _1