tests: vdo scsi convert

Somewhat tricky test to check VDO import of a SCSI device.

test/shell/vdo-scsi-convert.sh

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+#!/usr/bin/env bash
+
+# Copyright (C) 2021 Red Hat, Inc. All rights reserved.
+#
+# 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,
+# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+
+# Test conversion of VDO volumes made by vdo manager into VDO LV.
+
+
+SKIP_WITH_LVMPOLLD=1
+
+. lib/inittest
+
+# Use local for this test vdo configuratoin
+VDO_CONFIG="vdotestconf.yml"
+VDOCONF="-f $VDO_CONFIG"
+#VDOCONF=""
+export VDOCONF VDO_CONFIG
+VDONAME="${PREFIX}-TESTVDO"
+export DM_UUID_PREFIX=$PREFIX
+
+# Conversion can be made with this version of vdo driver
+aux have_vdo 6 2 3 || skip
+
+if not which vdo ; then
+	which lvm_vdo_wrapper || skip "Missing 'lvm_vdo_wrapper'."
+	# enable expansion of aliasis within script itself
+	shopt -s expand_aliases
+	alias vdo='lvm_vdo_wrapper'
+	export VDO_BINARY=lvm_vdo_wrapper
+	echo "Using 'lvm_vdo_wrapper' emulation of 'vdo' manager."
+fi
+
+# VDO automatically starts dmeventd
+aux prepare_dmeventd
+
+which mkfs.ext4 || skip
+export MKE2FS_CONFIG="$TESTDIR/lib/mke2fs.conf"
+export TMPDIR=$PWD
+
+######################################################################
+#
+# !!! This is rather tricky way how to 'play' with large SCSI !!!
+#
+# Use 311/313MB 'wrap-around' RAM for 4GiB virtual disk.
+# (using prime number for dev_size_mb)
+#
+# ATM this seems work with the test for layout of VDO written data.
+# Minimal required size for VDO volume is ~4GiB
+#
+aux prepare_scsi_debug_dev 311 "virtual_gb=4"
+SCSI_DEV=$(< SCSI_DEBUG_DEV)
+
+# this non-scsi backend should always work, but we want to get DEVLINKS
+#aux prepare_devs 1 6144
+#SCSI_DEV=$dev1
+
+blockdev --getsize64 "$SCSI_DEV"
+
+aux extend_filter_LVMTEST "a|$SCSI_DEV|"
+
+# use some not so 'well' aligned virtual|logical size
+vdo create $VDOCONF --name "$VDONAME" --device "$SCSI_DEV" \
+ --vdoSlabSize 128M --vdoLogicalSize 5M
+
+mkfs.ext4 -E nodiscard "$DM_DEV_DIR/mapper/$VDONAME"
+# Try just dry run and observe logging
+lvm_import_vdo --dry-run -y -v --name $lv1 "$SCSI_DEV"
+
+lvm_import_vdo -y --name $vg/$lv "$SCSI_DEV"
+check lv_field $vg/$lv size "6.00m"
+
+vgremove -f $vg