Kevin Wolf e4603fe139 qcow2: Fix header update with overridden backing file
In recent qemu versions, it is possible to override the backing file
name and format that is stored in the image file with values given at
runtime. In such cases, the temporary override could end up in the
image header if the qcow2 header was updated, while obviously correct
behaviour would be to leave the on-disk backing file path/format
unchanged.

Fix this and add a test case for it.

Reported-by: Michael Tokarev <mjt@tls.msk.ru>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-id: 1428411796-2852-1-git-send-email-kwolf@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2015-04-08 10:29:20 +01:00
..
007
2015-03-10 14:02:21 +01:00
015
2015-03-10 14:02:21 +01:00
026
2015-03-10 14:02:21 +01:00
2015-03-10 14:02:21 +01:00
029
2015-03-10 14:02:21 +01:00
031
2014-06-27 20:00:00 +02:00
033
2015-03-27 10:01:12 +00:00
039
2014-12-12 15:48:26 +00:00
048
2014-12-10 10:31:12 +01:00
2015-03-16 17:07:25 +01:00
2015-03-16 17:07:25 +01:00
054
2014-06-27 20:00:00 +02:00
058
2015-03-10 14:02:21 +01:00
059
2014-12-12 13:14:10 +00:00
061
2014-11-03 11:41:49 +00:00
062
2013-08-30 15:28:52 +02:00
064
2015-01-23 12:41:32 -05:00
2015-01-23 12:41:32 -05:00
067
2015-03-10 14:02:21 +01:00
069
2014-09-22 11:39:45 +01:00
070
2014-10-04 19:18:17 +01:00
2014-10-04 19:18:17 +01:00
072
2014-09-22 11:39:45 +01:00
077
2014-12-10 10:31:12 +01:00
2014-04-11 13:59:49 +02:00
079
2015-03-10 14:02:21 +01:00
080
2015-03-10 14:02:21 +01:00
083
2015-02-06 17:24:22 +01:00
2015-02-06 17:24:22 +01:00
084
2014-11-09 23:39:50 +01:00
2015-03-16 17:07:25 +01:00
089
2015-03-10 14:02:21 +01:00
093
2015-02-16 15:07:18 +00:00
095
2014-10-04 19:18:17 +01:00
100
2015-02-06 17:24:22 +01:00
107
2014-11-03 11:41:48 +00:00
108
2015-03-10 14:02:21 +01:00
2015-01-13 11:47:55 +00:00
2014-12-10 10:31:12 +01:00
2015-02-06 17:24:21 +01:00
2012-02-23 10:29:46 +01:00

=== 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@savannah.nongnu.org.