qemu-e2k/tests/qemu-iotests
Eric Blake b66ff2c298 iotests: Specify explicit backing format where sensible
There are many existing qcow2 images that specify a backing file but
no format.  This has been the source of CVEs in the past, but has
become more prominent of a problem now that libvirt has switched to
-blockdev.  With older -drive, at least the probing was always done by
qemu (so the only risk of a changed format between successive boots of
a guest was if qemu was upgraded and probed differently).  But with
newer -blockdev, libvirt must specify a format; if libvirt guesses raw
where the image was formatted, this results in data corruption visible
to the guest; conversely, if libvirt guesses qcow2 where qemu was
using raw, this can result in potential security holes, so modern
libvirt instead refuses to use images without explicit backing format.

The change in libvirt to reject images without explicit backing format
has pointed out that a number of tools have been far too reliant on
probing in the past.  It's time to set a better example in our own
iotests of properly setting this parameter.

iotest calls to create, rebase, and convert are all impacted to some
degree.  It's a bit annoying that we are inconsistent on command line
- while all of those accept -o backing_file=...,backing_fmt=..., the
shortcuts are different: create and rebase have -b and -F, while
convert has -B but no -F.  (amend has no shortcuts, but the previous
patch just deprecated the use of amend to change backing chains).

Signed-off-by: Eric Blake <eblake@redhat.com>
Message-Id: <20200706203954.341758-9-eblake@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2020-07-14 15:18:59 +02:00
..
001
2020-05-05 13:17:36 +02:00
2017-07-11 17:45:02 +02:00
052
2020-05-05 13:17:36 +02:00
063
2020-01-06 13:43:07 +01:00
2020-01-06 13:43:07 +01:00
2015-01-23 12:41:32 -05:00
065
2020-05-13 14:20:31 +02:00
2017-05-11 12:08:24 +02:00
2017-09-06 15:19:01 +01:00
079
2020-01-06 13:43:07 +01:00
080
2020-05-13 14:20:31 +02:00
083
2019-10-28 11:22:31 +01:00
087
2020-07-06 08:49:28 +02:00
091
2020-05-08 13:26:35 +02:00
2020-01-06 13:43:07 +01:00
111
2020-01-06 13:43:07 +01:00
2018-06-11 16:18:45 +02:00
115
2020-01-06 13:43:07 +01:00
2019-08-16 10:25:16 +02:00
134
2020-05-05 13:17:36 +02:00
2016-05-19 16:45:31 +02:00
137
2020-01-06 13:43:07 +01:00
2020-01-06 13:43:07 +01:00
140
2019-10-28 11:22:31 +01:00
147
2020-02-20 16:43:42 +01:00
148
2020-05-08 13:26:35 +02:00
149
2020-05-05 13:17:36 +02:00
2020-03-11 15:54:38 +01:00
2016-09-20 22:10:57 +02:00
2016-09-20 22:10:57 +02:00
162
2019-10-10 12:13:23 +02:00
2019-10-10 12:13:23 +02:00
2017-09-26 15:00:32 +02:00
2016-09-20 22:10:57 +02:00
2020-06-23 16:07:07 +02:00
174
2020-01-06 13:43:07 +01:00
2017-02-12 00:47:42 +01:00
178
2020-07-06 08:49:28 +02:00
2020-05-28 13:15:23 -05:00
188
2020-07-06 08:49:28 +02:00
192
2019-10-28 11:22:31 +01:00
202
2020-05-05 13:17:36 +02:00
203
2020-05-05 13:17:36 +02:00
206
2020-07-06 08:49:28 +02:00
207
2020-05-05 13:17:36 +02:00
2019-06-24 16:01:04 +02:00
208
2020-05-05 13:17:36 +02:00
209
2020-05-05 13:17:36 +02:00
210
2020-05-05 13:17:36 +02:00
211
2020-05-05 13:17:36 +02:00
212
2020-05-05 13:17:36 +02:00
213
2020-05-05 13:17:36 +02:00
218
2020-05-05 13:17:36 +02:00
219
2020-05-05 13:17:36 +02:00
222
2020-05-05 13:17:36 +02:00
2019-10-10 10:56:18 +02:00
2019-02-25 15:11:27 +01:00
229
2020-06-17 16:21:21 +02:00
2019-03-19 15:49:29 +01:00
233
2019-06-13 08:50:47 -05:00
234
2020-05-05 13:17:36 +02:00
2019-02-01 13:46:44 +01:00
235
2020-05-05 13:17:36 +02:00
236
2020-05-05 13:17:36 +02:00
237
2020-05-05 13:17:36 +02:00
238
2020-05-05 13:17:36 +02:00
2019-02-01 13:46:44 +01:00
240
2019-10-28 11:22:31 +01:00
242
2020-05-05 13:17:36 +02:00
246
2020-05-05 13:17:36 +02:00
2019-03-19 15:49:29 +01:00
248
2020-05-05 13:17:36 +02:00
2019-06-04 16:55:58 +02:00
254
2020-05-05 13:17:36 +02:00
2019-08-16 16:28:03 -04:00
255
2020-05-05 13:17:36 +02:00
256
2020-05-05 13:17:36 +02:00
258
2020-05-05 13:17:36 +02:00
260
2020-05-05 13:17:36 +02:00
262
2020-05-05 13:17:36 +02:00
263
2020-07-06 08:49:28 +02:00
264
2020-05-05 13:17:36 +02:00
2019-10-22 20:51:31 -05:00
265
2020-01-06 13:43:07 +01:00
277
2020-05-05 13:17:36 +02:00
2019-11-18 16:01:31 -06:00
280
2020-05-05 13:17:36 +02:00
284
2020-07-06 08:49:28 +02:00
286
2020-02-20 16:43:42 +01:00
291
2020-06-24 10:00:04 +02:00
292
2020-06-17 16:21:21 +02:00
295
2020-07-06 08:49:28 +02:00
2020-07-06 08:49:28 +02:00
296
2020-07-06 08:49:28 +02:00
2020-07-06 08:49:28 +02:00
297
2020-05-18 19:05:25 +02:00
301
2020-07-14 15:18:59 +02:00
2020-07-06 08:49:28 +02:00
2020-07-14 15:18:59 +02:00
2020-07-06 08:49:28 +02:00

=== This is the QEMU I/O test suite ===

* Intro

This package contains a simple test suite for the I/O layer of qemu.
It does not require a guest, but only the qemu, qemu-img and qemu-io
binaries.  This does limit it to exercise the low-level I/O path only
but no actual block drivers like ide, scsi or virtio.

* Usage

Just run ./check to run all tests for the raw image format, or ./check
-qcow2 to test the qcow2 image format.  The output of ./check -h explains
additional options to test further image formats or I/O methods.

* Feedback and patches

Please send improvements to the test suite, general feedback or just
reports of failing tests cases to qemu-devel@nongnu.org with a CC:
to qemu-block@nongnu.org.