test: repair of thin-pool used by foreign apps

test/shell/thin-foreign-repair.sh

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+#!/usr/bin/env bash
+
+# Copyright (C) 2020 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 foreing user of thin-pool
+
+
+SKIP_WITH_LVMPOLLD=1
+
+. lib/inittest
+
+cleanup_mounted_and_teardown()
+{
+	dmsetup remove $THIN || true
+	vgremove -ff $vg
+	aux teardown
+}
+
+#
+# Main
+#
+aux have_thin 1 0 0 || skip
+which mkfs.ext4 || skip
+
+# Use our mkfs config file to get approximately same results
+# TODO: maybe use it for all test via some 'prepare' function
+export MKE2FS_CONFIG="$TESTOLDPWD/lib/mke2fs.conf"
+
+aux prepare_vg 2 64
+
+# Create named pool only
+lvcreate -L2 -T $vg/pool
+
+POOL="$vg-pool"
+THIN="${PREFIX}_thin"
+
+# Foreing user is using own ioctl command to create thin devices
+dmsetup message $POOL 0 "create_thin 0"
+dmsetup message $POOL 0 "set_transaction_id 0 2"
+
+# Once the transaction id has changed, lvm2 shall not be able to create thinLV
+fail lvcreate -V10 $vg/pool
+
+trap 'cleanup_mounted_and_teardown' EXIT
+
+# 20M thin device
+dmsetup create "$THIN" --table "0 40960 thin $DM_DEV_DIR/mapper/$POOL 0"
+
+mkfs.ext4 "$DM_DEV_DIR/mapper/$THIN"
+
+dmsetup remove "$THIN"
+
+lvchange -an $vg/pool
+
+# Repair thin-pool used by 'foreing' apps (setting their own tid)
+lvconvert --repair $vg/pool 2>&1 | tee out
+
+not grep "Transaction id" out
+
+lvchange -ay $vg/pool
+
+dmsetup create "$THIN" --table "0 40960 thin $DM_DEV_DIR/mapper/$POOL 0"
+
+fsck -n "$DM_DEV_DIR/mapper/$THIN"