diff --git a/block/snapshot.c b/block/snapshot.c
index f2f48f926a8f..8081616ae91b 100644
--- a/block/snapshot.c
+++ b/block/snapshot.c
@@ -31,6 +31,7 @@
#include "qapi/qmp/qerror.h"
#include "qapi/qmp/qstring.h"
#include "qemu/option.h"
+#include "sysemu/block-backend.h"
QemuOptsList internal_snapshot_opts = {
.name = "snapshot",
@@ -384,6 +385,16 @@ int bdrv_snapshot_load_tmp_by_id_or_name(BlockDriverState *bs,
return ret;
}
+static bool bdrv_all_snapshots_includes_bs(BlockDriverState *bs)
+{
+ if (!bdrv_is_inserted(bs) || bdrv_is_read_only(bs)) {
+ return false;
+ }
+
+ /* Include all nodes that are either in use by a BlockBackend, or that
+ * aren't attached to any node, but owned by the monitor. */
+ return bdrv_has_blk(bs) || QLIST_EMPTY(&bs->parents);
+}
/* Group operations. All block drivers are involved.
* These functions will properly handle dataplane (take aio_context_acquire
@@ -399,7 +410,7 @@ bool bdrv_all_can_snapshot(BlockDriverState **first_bad_bs)
AioContext *ctx = bdrv_get_aio_context(bs);
aio_context_acquire(ctx);
- if (bdrv_is_inserted(bs) && !bdrv_is_read_only(bs)) {
+ if (bdrv_all_snapshots_includes_bs(bs)) {
ok = bdrv_can_snapshot(bs);
}
aio_context_release(ctx);
@@ -426,8 +437,9 @@ int bdrv_all_delete_snapshot(const char *name, BlockDriverState **first_bad_bs,
AioContext *ctx = bdrv_get_aio_context(bs);
aio_context_acquire(ctx);
- if (bdrv_can_snapshot(bs) &&
- bdrv_snapshot_find(bs, snapshot, name) >= 0) {
+ if (bdrv_all_snapshots_includes_bs(bs) &&
+ bdrv_snapshot_find(bs, snapshot, name) >= 0)
+ {
ret = bdrv_snapshot_delete(bs, snapshot->id_str,
snapshot->name, err);
}
@@ -455,7 +467,7 @@ int bdrv_all_goto_snapshot(const char *name, BlockDriverState **first_bad_bs,
AioContext *ctx = bdrv_get_aio_context(bs);
aio_context_acquire(ctx);
- if (bdrv_can_snapshot(bs)) {
+ if (bdrv_all_snapshots_includes_bs(bs)) {
ret = bdrv_snapshot_goto(bs, name, errp);
}
aio_context_release(ctx);
@@ -481,7 +493,7 @@ int bdrv_all_find_snapshot(const char *name, BlockDriverState **first_bad_bs)
AioContext *ctx = bdrv_get_aio_context(bs);
aio_context_acquire(ctx);
- if (bdrv_can_snapshot(bs)) {
+ if (bdrv_all_snapshots_includes_bs(bs)) {
err = bdrv_snapshot_find(bs, &sn, name);
}
aio_context_release(ctx);
@@ -512,7 +524,7 @@ int bdrv_all_create_snapshot(QEMUSnapshotInfo *sn,
if (bs == vm_state_bs) {
sn->vm_state_size = vm_state_size;
err = bdrv_snapshot_create(bs, sn);
- } else if (bdrv_can_snapshot(bs)) {
+ } else if (bdrv_all_snapshots_includes_bs(bs)) {
sn->vm_state_size = 0;
err = bdrv_snapshot_create(bs, sn);
}
@@ -538,7 +550,7 @@ BlockDriverState *bdrv_all_find_vmstate_bs(void)
bool found;
aio_context_acquire(ctx);
- found = bdrv_can_snapshot(bs);
+ found = bdrv_all_snapshots_includes_bs(bs) && bdrv_can_snapshot(bs);
aio_context_release(ctx);
if (found) {
diff --git a/tests/qemu-iotests/044 b/tests/qemu-iotests/044
index 05ea1f49c5a4..8b2afa2a11e9 100755
--- a/tests/qemu-iotests/044
+++ b/tests/qemu-iotests/044
@@ -28,9 +28,6 @@ import struct
import subprocess
import sys
-if sys.version_info.major == 2:
- range = xrange
-
test_img = os.path.join(iotests.test_dir, 'test.img')
class TestRefcountTableGrowth(iotests.QMPTestCase):
diff --git a/tests/qemu-iotests/163 b/tests/qemu-iotests/163
index 081ccc8ac1d4..d94728e0804d 100755
--- a/tests/qemu-iotests/163
+++ b/tests/qemu-iotests/163
@@ -21,9 +21,6 @@
import os, random, iotests, struct, qcow2, sys
from iotests import qemu_img, qemu_io, image_size
-if sys.version_info.major == 2:
- range = xrange
-
test_img = os.path.join(iotests.test_dir, 'test.img')
check_img = os.path.join(iotests.test_dir, 'check.img')
diff --git a/tests/qemu-iotests/267 b/tests/qemu-iotests/267
new file mode 100755
index 000000000000..d37a67c01295
--- /dev/null
+++ b/tests/qemu-iotests/267
@@ -0,0 +1,168 @@
+#!/usr/bin/env bash
+#
+# Test which nodes are involved in internal snapshots
+#
+# 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 .
+#
+
+# creator
+owner=kwolf@redhat.com
+
+seq=`basename $0`
+echo "QA output created by $seq"
+
+status=1 # failure is the default!
+
+_cleanup()
+{
+ _cleanup_test_img
+ rm -f "$TEST_DIR/nbd"
+}
+trap "_cleanup; exit \$status" 0 1 2 3 15
+
+# get standard environment, filters and checks
+. ./common.rc
+. ./common.filter
+
+_supported_fmt qcow2
+_supported_proto file
+_supported_os Linux
+
+# Internal snapshots are (currently) impossible with refcount_bits=1
+_unsupported_imgopts 'refcount_bits=1[^0-9]'
+
+do_run_qemu()
+{
+ echo Testing: "$@"
+ (
+ if ! test -t 0; then
+ while read cmd; do
+ echo $cmd
+ done
+ fi
+ echo quit
+ ) | $QEMU -nographic -monitor stdio -nodefaults "$@"
+ echo
+}
+
+run_qemu()
+{
+ do_run_qemu "$@" 2>&1 | _filter_testdir | _filter_qemu | _filter_hmp |
+ _filter_generated_node_ids | _filter_imgfmt | _filter_vmstate_size
+}
+
+size=128M
+
+run_test()
+{
+ _make_test_img $size
+ printf "savevm snap0\ninfo snapshots\nloadvm snap0\n" | run_qemu "$@" | _filter_date
+}
+
+
+echo
+echo "=== No block devices at all ==="
+echo
+
+run_test
+
+echo
+echo "=== -drive if=none ==="
+echo
+
+run_test -drive driver=file,file="$TEST_IMG",if=none
+run_test -drive driver=$IMGFMT,file="$TEST_IMG",if=none
+run_test -drive driver=$IMGFMT,file="$TEST_IMG",if=none -device virtio-blk,drive=none0
+
+echo
+echo "=== -drive if=virtio ==="
+echo
+
+run_test -drive driver=file,file="$TEST_IMG",if=virtio
+run_test -drive driver=$IMGFMT,file="$TEST_IMG",if=virtio
+
+echo
+echo "=== Simple -blockdev ==="
+echo
+
+run_test -blockdev driver=file,filename="$TEST_IMG",node-name=file
+run_test -blockdev driver=file,filename="$TEST_IMG",node-name=file \
+ -blockdev driver=$IMGFMT,file=file,node-name=fmt
+run_test -blockdev driver=file,filename="$TEST_IMG",node-name=file \
+ -blockdev driver=raw,file=file,node-name=raw \
+ -blockdev driver=$IMGFMT,file=raw,node-name=fmt
+
+echo
+echo "=== -blockdev with a filter on top ==="
+echo
+
+run_test -blockdev driver=file,filename="$TEST_IMG",node-name=file \
+ -blockdev driver=$IMGFMT,file=file,node-name=fmt \
+ -blockdev driver=copy-on-read,file=fmt,node-name=filter
+
+echo
+echo "=== -blockdev with a backing file ==="
+echo
+
+TEST_IMG="$TEST_IMG.base" _make_test_img $size
+
+IMGOPTS="backing_file=$TEST_IMG.base" \
+run_test -blockdev driver=file,filename="$TEST_IMG.base",node-name=backing-file \
+ -blockdev driver=file,filename="$TEST_IMG",node-name=file \
+ -blockdev driver=$IMGFMT,file=file,backing=backing-file,node-name=fmt
+
+IMGOPTS="backing_file=$TEST_IMG.base" \
+run_test -blockdev driver=file,filename="$TEST_IMG.base",node-name=backing-file \
+ -blockdev driver=$IMGFMT,file=backing-file,node-name=backing-fmt \
+ -blockdev driver=file,filename="$TEST_IMG",node-name=file \
+ -blockdev driver=$IMGFMT,file=file,backing=backing-fmt,node-name=fmt
+
+# A snapshot should be present on the overlay, but not the backing file
+echo Internal snapshots on overlay:
+$QEMU_IMG snapshot -l "$TEST_IMG" | _filter_date | _filter_vmstate_size
+
+echo Internal snapshots on backing file:
+$QEMU_IMG snapshot -l "$TEST_IMG.base" | _filter_date | _filter_vmstate_size
+
+echo
+echo "=== -blockdev with NBD server on the backing file ==="
+echo
+
+IMGOPTS="backing_file=$TEST_IMG.base" _make_test_img $size
+cat <= (3,6) else 1)'
+then
+ python_usable=true
+fi
+
default_machine=$($QEMU_PROG -machine help | sed -n '/(default)/ s/ .*//p')
default_alias_machine=$($QEMU_PROG -machine help | \
sed -n "/(alias of $default_machine)/ { s/ .*//p; q; }")
@@ -809,7 +815,12 @@ do
start=$(_wallclock)
if [ "$(head -n 1 "$source_iotests/$seq")" == "#!/usr/bin/env python" ]; then
- run_command="$PYTHON $seq"
+ if $python_usable; then
+ run_command="$PYTHON $seq"
+ else
+ run_command="false"
+ echo "Unsupported Python version" > $seq.notrun
+ fi
else
run_command="./$seq"
fi
diff --git a/tests/qemu-iotests/common.filter b/tests/qemu-iotests/common.filter
index 445a1c23e0c1..9f418b4881a1 100644
--- a/tests/qemu-iotests/common.filter
+++ b/tests/qemu-iotests/common.filter
@@ -19,12 +19,15 @@
# standard filters
#
-# ctime(3) dates
-#
_filter_date()
{
- $SED \
- -e 's/[A-Z][a-z][a-z] [A-z][a-z][a-z] *[0-9][0-9]* [0-9][0-9]:[0-9][0-9]:[0-9][0-9] [0-9][0-9][0-9][0-9]$/DATE/'
+ $SED -re 's/[0-9]{4}-[0-9]{2}-[0-9]{2} [0-9]{2}:[0-9]{2}:[0-9]{2}/yyyy-mm-dd hh:mm:ss/'
+}
+
+_filter_vmstate_size()
+{
+ $SED -r -e 's/[0-9. ]{5} [KMGT]iB/ SIZE/' \
+ -e 's/[0-9. ]{5} B/ SIZE/'
}
_filter_generated_node_ids()
diff --git a/tests/qemu-iotests/group b/tests/qemu-iotests/group
index 5d3da937e4f5..5805a79d9e86 100644
--- a/tests/qemu-iotests/group
+++ b/tests/qemu-iotests/group
@@ -277,3 +277,4 @@
263 rw quick
265 rw auto quick
266 rw quick
+267 rw auto quick snapshot
diff --git a/tests/qemu-iotests/iotests.py b/tests/qemu-iotests/iotests.py
index b26271187c84..9fb5181c3dc4 100644
--- a/tests/qemu-iotests/iotests.py
+++ b/tests/qemu-iotests/iotests.py
@@ -35,6 +35,7 @@
sys.path.append(os.path.join(os.path.dirname(__file__), '..', '..', 'python'))
from qemu import qtest
+assert sys.version_info >= (3,6)
# This will not work if arguments contain spaces but is necessary if we
# want to support the override options that ./check supports.
@@ -250,10 +251,7 @@ def image_size(img):
return json.loads(r)['virtual-size']
def is_str(val):
- if sys.version_info.major >= 3:
- return isinstance(val, str)
- else:
- return isinstance(val, str) or isinstance(val, unicode)
+ return isinstance(val, str)
test_dir_re = re.compile(r"%s" % test_dir)
def filter_test_dir(msg):
@@ -935,12 +933,7 @@ def execute_test(test_function=None,
else:
# We need to filter out the time taken from the output so that
# qemu-iotest can reliably diff the results against master output.
- if sys.version_info.major >= 3:
- output = io.StringIO()
- else:
- # io.StringIO is for unicode strings, which is not what
- # 2.x's test runner emits.
- output = io.BytesIO()
+ output = io.StringIO()
logging.basicConfig(level=(logging.DEBUG if debug else logging.WARN))