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authorPeter Maydell <peter.maydell@linaro.org>2016-04-20 16:43:53 +0100
committerPeter Maydell <peter.maydell@linaro.org>2016-04-20 16:43:53 +0100
commitbefbaf51ced6702170d568b07e2551399223ca3b (patch)
treea9745ff80384cca194d1c6123e8c7366cf33ed46
parentfa59dd95829bc33d591274e98db5bb762ba1a2a0 (diff)
parent8ca92f3c069558897269e609e4f47bd6255d6339 (diff)
downloadqemu-arm-befbaf51ced6702170d568b07e2551399223ca3b.tar.gz
Merge remote-tracking branch 'remotes/kevin/tags/for-upstream' into staging
Mirror block job fixes for 2.6.0-rc3 # gpg: Signature made Wed 20 Apr 2016 15:56:43 BST using RSA key ID C88F2FD6 # gpg: Good signature from "Kevin Wolf <kwolf@redhat.com>" * remotes/kevin/tags/for-upstream: iotests: Test case for drive-mirror with unaligned image size iotests: Add iotests.image_size mirror: Don't extend the last sub-chunk block/mirror: Refresh stale bitmap iterator cache block/mirror: Revive dead yielding code Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
-rw-r--r--block/mirror.c45
-rw-r--r--tests/qemu-iotests/109.out44
-rw-r--r--tests/qemu-iotests/15262
-rw-r--r--tests/qemu-iotests/152.out5
-rw-r--r--tests/qemu-iotests/group1
-rw-r--r--tests/qemu-iotests/iotests.py6
6 files changed, 127 insertions, 36 deletions
diff --git a/block/mirror.c b/block/mirror.c
index c2cfc1a5ef..d56e30e472 100644
--- a/block/mirror.c
+++ b/block/mirror.c
@@ -108,7 +108,7 @@ static void mirror_iteration_done(MirrorOp *op, int ret)
sectors_per_chunk = s->granularity >> BDRV_SECTOR_BITS;
chunk_num = op->sector_num / sectors_per_chunk;
- nb_chunks = op->nb_sectors / sectors_per_chunk;
+ nb_chunks = DIV_ROUND_UP(op->nb_sectors, sectors_per_chunk);
bitmap_clear(s->in_flight_bitmap, chunk_num, nb_chunks);
if (ret >= 0) {
if (s->cow_bitmap) {
@@ -161,6 +161,14 @@ static void mirror_read_complete(void *opaque, int ret)
mirror_write_complete, op);
}
+static inline void mirror_clip_sectors(MirrorBlockJob *s,
+ int64_t sector_num,
+ int *nb_sectors)
+{
+ *nb_sectors = MIN(*nb_sectors,
+ s->bdev_length / BDRV_SECTOR_SIZE - sector_num);
+}
+
/* Round sector_num and/or nb_sectors to target cluster if COW is needed, and
* return the offset of the adjusted tail sector against original. */
static int mirror_cow_align(MirrorBlockJob *s,
@@ -189,6 +197,9 @@ static int mirror_cow_align(MirrorBlockJob *s,
s->target_cluster_sectors);
}
}
+ /* Clipping may result in align_nb_sectors unaligned to chunk boundary, but
+ * that doesn't matter because it's already the end of source image. */
+ mirror_clip_sectors(s, align_sector_num, &align_nb_sectors);
ret = align_sector_num + align_nb_sectors - (*sector_num + *nb_sectors);
*sector_num = align_sector_num;
@@ -231,9 +242,8 @@ static int mirror_do_read(MirrorBlockJob *s, int64_t sector_num,
/* The sector range must meet granularity because:
* 1) Caller passes in aligned values;
* 2) mirror_cow_align is used only when target cluster is larger. */
- assert(!(nb_sectors % sectors_per_chunk));
assert(!(sector_num % sectors_per_chunk));
- nb_chunks = nb_sectors / sectors_per_chunk;
+ nb_chunks = DIV_ROUND_UP(nb_sectors, sectors_per_chunk);
while (s->buf_free_count < nb_chunks) {
trace_mirror_yield_in_flight(s, sector_num, s->in_flight);
@@ -298,7 +308,7 @@ static void mirror_do_zero_or_discard(MirrorBlockJob *s,
static uint64_t coroutine_fn mirror_iteration(MirrorBlockJob *s)
{
BlockDriverState *source = s->common.bs;
- int64_t sector_num;
+ int64_t sector_num, first_chunk;
uint64_t delay_ns = 0;
/* At least the first dirty chunk is mirrored in one iteration. */
int nb_chunks = 1;
@@ -313,6 +323,12 @@ static uint64_t coroutine_fn mirror_iteration(MirrorBlockJob *s)
assert(sector_num >= 0);
}
+ first_chunk = sector_num / sectors_per_chunk;
+ while (test_bit(first_chunk, s->in_flight_bitmap)) {
+ trace_mirror_yield_in_flight(s, first_chunk, s->in_flight);
+ mirror_wait_for_io(s);
+ }
+
/* Find the number of consective dirty chunks following the first dirty
* one, and wait for in flight requests in them. */
while (nb_chunks * sectors_per_chunk < (s->buf_size >> BDRV_SECTOR_BITS)) {
@@ -324,17 +340,17 @@ static uint64_t coroutine_fn mirror_iteration(MirrorBlockJob *s)
break;
}
if (test_bit(next_chunk, s->in_flight_bitmap)) {
- if (nb_chunks > 0) {
- break;
- }
- trace_mirror_yield_in_flight(s, next_sector, s->in_flight);
- mirror_wait_for_io(s);
- /* Now retry. */
- } else {
+ break;
+ }
+
+ hbitmap_next = hbitmap_iter_next(&s->hbi);
+ if (hbitmap_next > next_sector || hbitmap_next < 0) {
+ /* The bitmap iterator's cache is stale, refresh it */
+ bdrv_set_dirty_iter(&s->hbi, next_sector);
hbitmap_next = hbitmap_iter_next(&s->hbi);
- assert(hbitmap_next == next_sector);
- nb_chunks++;
}
+ assert(hbitmap_next == next_sector);
+ nb_chunks++;
}
/* Clear dirty bits before querying the block status, because
@@ -378,6 +394,7 @@ static uint64_t coroutine_fn mirror_iteration(MirrorBlockJob *s)
}
}
+ mirror_clip_sectors(s, sector_num, &io_sectors);
switch (mirror_method) {
case MIRROR_METHOD_COPY:
io_sectors = mirror_do_read(s, sector_num, io_sectors);
@@ -393,7 +410,7 @@ static uint64_t coroutine_fn mirror_iteration(MirrorBlockJob *s)
}
assert(io_sectors);
sector_num += io_sectors;
- nb_chunks -= io_sectors / sectors_per_chunk;
+ nb_chunks -= DIV_ROUND_UP(io_sectors, sectors_per_chunk);
delay_ns += ratelimit_calculate_delay(&s->limit, io_sectors);
}
return delay_ns;
diff --git a/tests/qemu-iotests/109.out b/tests/qemu-iotests/109.out
index b3358de73f..38bc073a37 100644
--- a/tests/qemu-iotests/109.out
+++ b/tests/qemu-iotests/109.out
@@ -10,14 +10,14 @@ Automatically detecting the format is dangerous for raw images, write operations
Specify the 'raw' format explicitly to remove the restrictions.
{"return": {}}
{"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP}, "event": "BLOCK_JOB_ERROR", "data": {"device": "src", "operation": "write", "action": "report"}}
-{"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP}, "event": "BLOCK_JOB_COMPLETED", "data": {"device": "src", "len": 65536, "offset": 0, "speed": 0, "type": "mirror", "error": "Operation not permitted"}}
+{"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP}, "event": "BLOCK_JOB_COMPLETED", "data": {"device": "src", "len": 1024, "offset": 0, "speed": 0, "type": "mirror", "error": "Operation not permitted"}}
{"return": []}
read 65536/65536 bytes at offset 0
64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
{"return": {}}
{"return": {}}
-{"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP}, "event": "BLOCK_JOB_READY", "data": {"device": "src", "len": 65536, "offset": 65536, "speed": 0, "type": "mirror"}}
-{"return": [{"io-status": "ok", "device": "src", "busy": false, "len": 65536, "offset": 65536, "paused": false, "speed": 0, "ready": true, "type": "mirror"}]}
+{"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP}, "event": "BLOCK_JOB_READY", "data": {"device": "src", "len": 1024, "offset": 1024, "speed": 0, "type": "mirror"}}
+{"return": [{"io-status": "ok", "device": "src", "busy": false, "len": 1024, "offset": 1024, "paused": false, "speed": 0, "ready": true, "type": "mirror"}]}
Warning: Image size mismatch!
Images are identical.
@@ -31,14 +31,14 @@ Automatically detecting the format is dangerous for raw images, write operations
Specify the 'raw' format explicitly to remove the restrictions.
{"return": {}}
{"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP}, "event": "BLOCK_JOB_ERROR", "data": {"device": "src", "operation": "write", "action": "report"}}
-{"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP}, "event": "BLOCK_JOB_COMPLETED", "data": {"device": "src", "len": 262144, "offset": 65536, "speed": 0, "type": "mirror", "error": "Operation not permitted"}}
+{"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP}, "event": "BLOCK_JOB_COMPLETED", "data": {"device": "src", "len": 197120, "offset": 512, "speed": 0, "type": "mirror", "error": "Operation not permitted"}}
{"return": []}
read 65536/65536 bytes at offset 0
64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
{"return": {}}
{"return": {}}
-{"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP}, "event": "BLOCK_JOB_READY", "data": {"device": "src", "len": 262144, "offset": 262144, "speed": 0, "type": "mirror"}}
-{"return": [{"io-status": "ok", "device": "src", "busy": false, "len": 262144, "offset": 262144, "paused": false, "speed": 0, "ready": true, "type": "mirror"}]}
+{"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP}, "event": "BLOCK_JOB_READY", "data": {"device": "src", "len": 197120, "offset": 197120, "speed": 0, "type": "mirror"}}
+{"return": [{"io-status": "ok", "device": "src", "busy": false, "len": 197120, "offset": 197120, "paused": false, "speed": 0, "ready": true, "type": "mirror"}]}
Warning: Image size mismatch!
Images are identical.
@@ -73,14 +73,14 @@ Automatically detecting the format is dangerous for raw images, write operations
Specify the 'raw' format explicitly to remove the restrictions.
{"return": {}}
{"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP}, "event": "BLOCK_JOB_ERROR", "data": {"device": "src", "operation": "write", "action": "report"}}
-{"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP}, "event": "BLOCK_JOB_COMPLETED", "data": {"device": "src", "len": 65536, "offset": 0, "speed": 0, "type": "mirror", "error": "Operation not permitted"}}
+{"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP}, "event": "BLOCK_JOB_COMPLETED", "data": {"device": "src", "len": 1024, "offset": 0, "speed": 0, "type": "mirror", "error": "Operation not permitted"}}
{"return": []}
read 65536/65536 bytes at offset 0
64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
{"return": {}}
{"return": {}}
-{"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP}, "event": "BLOCK_JOB_READY", "data": {"device": "src", "len": 65536, "offset": 65536, "speed": 0, "type": "mirror"}}
-{"return": [{"io-status": "ok", "device": "src", "busy": false, "len": 65536, "offset": 65536, "paused": false, "speed": 0, "ready": true, "type": "mirror"}]}
+{"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP}, "event": "BLOCK_JOB_READY", "data": {"device": "src", "len": 1024, "offset": 1024, "speed": 0, "type": "mirror"}}
+{"return": [{"io-status": "ok", "device": "src", "busy": false, "len": 1024, "offset": 1024, "paused": false, "speed": 0, "ready": true, "type": "mirror"}]}
Warning: Image size mismatch!
Images are identical.
@@ -115,14 +115,14 @@ Automatically detecting the format is dangerous for raw images, write operations
Specify the 'raw' format explicitly to remove the restrictions.
{"return": {}}
{"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP}, "event": "BLOCK_JOB_ERROR", "data": {"device": "src", "operation": "write", "action": "report"}}
-{"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP}, "event": "BLOCK_JOB_COMPLETED", "data": {"device": "src", "len": 65536, "offset": 0, "speed": 0, "type": "mirror", "error": "Operation not permitted"}}
+{"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP}, "event": "BLOCK_JOB_COMPLETED", "data": {"device": "src", "len": 2560, "offset": 0, "speed": 0, "type": "mirror", "error": "Operation not permitted"}}
{"return": []}
read 65536/65536 bytes at offset 0
64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
{"return": {}}
{"return": {}}
-{"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP}, "event": "BLOCK_JOB_READY", "data": {"device": "src", "len": 65536, "offset": 65536, "speed": 0, "type": "mirror"}}
-{"return": [{"io-status": "ok", "device": "src", "busy": false, "len": 65536, "offset": 65536, "paused": false, "speed": 0, "ready": true, "type": "mirror"}]}
+{"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP}, "event": "BLOCK_JOB_READY", "data": {"device": "src", "len": 2560, "offset": 2560, "speed": 0, "type": "mirror"}}
+{"return": [{"io-status": "ok", "device": "src", "busy": false, "len": 2560, "offset": 2560, "paused": false, "speed": 0, "ready": true, "type": "mirror"}]}
Warning: Image size mismatch!
Images are identical.
@@ -135,14 +135,14 @@ Automatically detecting the format is dangerous for raw images, write operations
Specify the 'raw' format explicitly to remove the restrictions.
{"return": {}}
{"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP}, "event": "BLOCK_JOB_ERROR", "data": {"device": "src", "operation": "write", "action": "report"}}
-{"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP}, "event": "BLOCK_JOB_COMPLETED", "data": {"device": "src", "len": 65536, "offset": 0, "speed": 0, "type": "mirror", "error": "Operation not permitted"}}
+{"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP}, "event": "BLOCK_JOB_COMPLETED", "data": {"device": "src", "len": 2560, "offset": 0, "speed": 0, "type": "mirror", "error": "Operation not permitted"}}
{"return": []}
read 65536/65536 bytes at offset 0
64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
{"return": {}}
{"return": {}}
-{"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP}, "event": "BLOCK_JOB_READY", "data": {"device": "src", "len": 65536, "offset": 65536, "speed": 0, "type": "mirror"}}
-{"return": [{"io-status": "ok", "device": "src", "busy": false, "len": 65536, "offset": 65536, "paused": false, "speed": 0, "ready": true, "type": "mirror"}]}
+{"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP}, "event": "BLOCK_JOB_READY", "data": {"device": "src", "len": 2560, "offset": 2560, "speed": 0, "type": "mirror"}}
+{"return": [{"io-status": "ok", "device": "src", "busy": false, "len": 2560, "offset": 2560, "paused": false, "speed": 0, "ready": true, "type": "mirror"}]}
Image resized.
Warning: Image size mismatch!
Images are identical.
@@ -198,14 +198,14 @@ Automatically detecting the format is dangerous for raw images, write operations
Specify the 'raw' format explicitly to remove the restrictions.
{"return": {}}
{"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP}, "event": "BLOCK_JOB_ERROR", "data": {"device": "src", "operation": "write", "action": "report"}}
-{"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP}, "event": "BLOCK_JOB_COMPLETED", "data": {"device": "src", "len": 65536, "offset": 0, "speed": 0, "type": "mirror", "error": "Operation not permitted"}}
+{"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP}, "event": "BLOCK_JOB_COMPLETED", "data": {"device": "src", "len": 2048, "offset": 0, "speed": 0, "type": "mirror", "error": "Operation not permitted"}}
{"return": []}
read 65536/65536 bytes at offset 0
64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
{"return": {}}
{"return": {}}
-{"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP}, "event": "BLOCK_JOB_READY", "data": {"device": "src", "len": 65536, "offset": 65536, "speed": 0, "type": "mirror"}}
-{"return": [{"io-status": "ok", "device": "src", "busy": false, "len": 65536, "offset": 65536, "paused": false, "speed": 0, "ready": true, "type": "mirror"}]}
+{"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP}, "event": "BLOCK_JOB_READY", "data": {"device": "src", "len": 2048, "offset": 2048, "speed": 0, "type": "mirror"}}
+{"return": [{"io-status": "ok", "device": "src", "busy": false, "len": 2048, "offset": 2048, "paused": false, "speed": 0, "ready": true, "type": "mirror"}]}
Image resized.
Warning: Image size mismatch!
Images are identical.
@@ -218,14 +218,14 @@ WARNING: Image format was not specified for 'TEST_DIR/t.raw' and probing guessed
Automatically detecting the format is dangerous for raw images, write operations on block 0 will be restricted.
Specify the 'raw' format explicitly to remove the restrictions.
{"return": {}}
-{"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP}, "event": "BLOCK_JOB_READY", "data": {"device": "src", "len": 65536, "offset": 65536, "speed": 0, "type": "mirror"}}
-{"return": [{"io-status": "ok", "device": "src", "busy": false, "len": 65536, "offset": 65536, "paused": false, "speed": 0, "ready": true, "type": "mirror"}]}
+{"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP}, "event": "BLOCK_JOB_READY", "data": {"device": "src", "len": 512, "offset": 512, "speed": 0, "type": "mirror"}}
+{"return": [{"io-status": "ok", "device": "src", "busy": false, "len": 512, "offset": 512, "paused": false, "speed": 0, "ready": true, "type": "mirror"}]}
Warning: Image size mismatch!
Images are identical.
{"return": {}}
{"return": {}}
-{"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP}, "event": "BLOCK_JOB_READY", "data": {"device": "src", "len": 65536, "offset": 65536, "speed": 0, "type": "mirror"}}
-{"return": [{"io-status": "ok", "device": "src", "busy": false, "len": 65536, "offset": 65536, "paused": false, "speed": 0, "ready": true, "type": "mirror"}]}
+{"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP}, "event": "BLOCK_JOB_READY", "data": {"device": "src", "len": 512, "offset": 512, "speed": 0, "type": "mirror"}}
+{"return": [{"io-status": "ok", "device": "src", "busy": false, "len": 512, "offset": 512, "paused": false, "speed": 0, "ready": true, "type": "mirror"}]}
Warning: Image size mismatch!
Images are identical.
*** done
diff --git a/tests/qemu-iotests/152 b/tests/qemu-iotests/152
new file mode 100644
index 0000000000..fec546d033
--- /dev/null
+++ b/tests/qemu-iotests/152
@@ -0,0 +1,62 @@
+#!/usr/bin/env python
+#
+# Tests for drive-mirror with source size unaligned to granularity
+#
+# Copyright (C) 2016 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/>.
+#
+
+import os
+import iotests
+from iotests import qemu_img
+
+test_img = os.path.join(iotests.test_dir, 'test.img')
+target_img = os.path.join(iotests.test_dir, 'target.img')
+
+class TestUnaligned(iotests.QMPTestCase):
+ def setUp(self):
+ qemu_img('create', '-f', iotests.imgfmt, test_img, '512')
+ self.vm = iotests.VM().add_drive(test_img)
+ self.vm.launch()
+
+ def tearDown(self):
+ self.vm.shutdown()
+ os.remove(test_img)
+ try:
+ os.remove(target_img)
+ except OSError:
+ pass
+
+ def test_unaligned(self):
+ result = self.vm.qmp('drive-mirror', device='drive0', sync='full',
+ granularity=65536, target=target_img)
+ self.complete_and_wait()
+ self.vm.shutdown()
+ self.assertEqual(iotests.image_size(test_img), iotests.image_size(target_img),
+ "Target size doesn't match source when granularity when unaligend")
+
+ def test_unaligned_with_update(self):
+ result = self.vm.qmp('drive-mirror', device='drive0', sync='full',
+ granularity=65536, target=target_img)
+ self.wait_ready()
+ self.vm.hmp_qemu_io('drive0', 'write 0 512')
+ self.complete_and_wait(wait_ready=False)
+ self.vm.shutdown()
+ self.assertEqual(iotests.image_size(test_img), iotests.image_size(target_img),
+ "Target size doesn't match source when granularity when unaligend")
+
+
+if __name__ == '__main__':
+ iotests.main(supported_fmts=['raw', 'qcow2'])
diff --git a/tests/qemu-iotests/152.out b/tests/qemu-iotests/152.out
new file mode 100644
index 0000000000..fbc63e62f8
--- /dev/null
+++ b/tests/qemu-iotests/152.out
@@ -0,0 +1,5 @@
+..
+----------------------------------------------------------------------
+Ran 2 tests
+
+OK
diff --git a/tests/qemu-iotests/group b/tests/qemu-iotests/group
index 2952b9d9cc..822953b6fa 100644
--- a/tests/qemu-iotests/group
+++ b/tests/qemu-iotests/group
@@ -152,3 +152,4 @@
148 rw auto quick
149 rw auto sudo
150 rw auto quick
+152 rw auto quick
diff --git a/tests/qemu-iotests/iotests.py b/tests/qemu-iotests/iotests.py
index d9ef60ef03..56f988ab3d 100644
--- a/tests/qemu-iotests/iotests.py
+++ b/tests/qemu-iotests/iotests.py
@@ -28,6 +28,7 @@ sys.path.append(os.path.join(os.path.dirname(__file__), '..', '..', 'scripts', '
import qmp
import qtest
import struct
+import json
# This will not work if arguments contain spaces but is necessary if we
@@ -103,6 +104,11 @@ def create_image(name, size):
i = i + 512
file.close()
+def image_size(img):
+ '''Return image's virtual size'''
+ r = qemu_img_pipe('info', '--output=json', '-f', imgfmt, img)
+ return json.loads(r)['virtual-size']
+
test_dir_re = re.compile(r"%s" % test_dir)
def filter_test_dir(msg):
return test_dir_re.sub("TEST_DIR", msg)