[Qemu-devel] [RFC 5/5] iotests: Add test for fallback truncate/create

[Max Reitz <mreitz@redhat.com>]

Signed-off-by: Max Reitz <mreitz@redhat.com>
---
 tests/qemu-iotests/259     | 71 ++++++++++++++++++++++++++++++++++++++
 tests/qemu-iotests/259.out | 20 +++++++++++
 tests/qemu-iotests/group   |  1 +
 3 files changed, 92 insertions(+)
 create mode 100755 tests/qemu-iotests/259
 create mode 100644 tests/qemu-iotests/259.out

diff --git a/tests/qemu-iotests/259 b/tests/qemu-iotests/259
new file mode 100755
index 0000000000..6e3941378f
--- /dev/null
+++ b/tests/qemu-iotests/259
@@ -0,0 +1,71 @@
+#!/usr/bin/env bash
+#
+# Test generic image creation and truncation fallback (by using NBD)
+#
+# Copyright (C) 2019 Red Hat, Inc.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+
+# creator
+owner=mreitz@redhat.com
+
+seq=$(basename $0)
+echo "QA output created by $seq"
+
+status=1	# failure is the default!
+
+_cleanup()
+{
+    _cleanup_test_img
+}
+trap "_cleanup; exit \$status" 0 1 2 3 15
+
+# get standard environment, filters and checks
+. ./common.rc
+. ./common.filter
+
+_supported_fmt raw
+_supported_proto nbd
+_supported_os Linux
+
+
+_make_test_img 64M
+
+echo
+echo '--- Testing no-op shrinking ---'
+
+$QEMU_IMG resize -f raw --shrink "$TEST_IMG" 32M
+
+echo
+echo '--- Testing non-working growing ---'
+
+$QEMU_IMG resize -f raw "$TEST_IMG" 128M
+
+echo
+echo '--- Testing creation ---'
+
+$QEMU_IMG create -f qcow2 "$TEST_IMG" 64M | _filter_img_create
+$QEMU_IMG info "$TEST_IMG" | _filter_img_info
+
+echo
+echo '--- Testing creation for which the node would need to grow ---'
+
+$QEMU_IMG create -f qcow2 -o preallocation=metadata "$TEST_IMG" 64M 2>&1 \
+    | _filter_img_create
+
+# success, all done
+echo "*** done"
+rm -f $seq.full
+status=0
diff --git a/tests/qemu-iotests/259.out b/tests/qemu-iotests/259.out
new file mode 100644
index 0000000000..1e4b11055f
--- /dev/null
+++ b/tests/qemu-iotests/259.out
@@ -0,0 +1,20 @@
+QA output created by 259
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=67108864
+
+--- Testing no-op shrinking ---
+qemu-img: Image was not resized; resizing may not be supported for this image
+
+--- Testing non-working growing ---
+qemu-img: Cannot grow this nbd node
+
+--- Testing creation ---
+Formatting 'TEST_DIR/t.IMGFMT', fmt=qcow2 size=67108864
+image: TEST_DIR/t.IMGFMT
+file format: qcow2
+virtual size: 64 MiB (67108864 bytes)
+disk size: unavailable
+
+--- Testing creation for which the node would need to grow ---
+qemu-img: TEST_DIR/t.IMGFMT: Could not resize image: Cannot grow this nbd node
+Formatting 'TEST_DIR/t.IMGFMT', fmt=qcow2 size=67108864 preallocation=metadata
+*** done
diff --git a/tests/qemu-iotests/group b/tests/qemu-iotests/group
index b34c8e3c0c..80e7603174 100644
--- a/tests/qemu-iotests/group
+++ b/tests/qemu-iotests/group
@@ -269,3 +269,4 @@
 254 rw auto backing quick
 255 rw auto quick
 256 rw auto quick
+259 rw auto quick
-- 
2.21.0