Stefan Hajnoczi [Fri, 15 Oct 2010 14:56:35 +0000 (07:56 -0700)]
qemu-iotests: add read/write from smaller backing image test
Some image formats support backing images that are smaller than the
image file. This patch adds a test that verifies that reads and writes
beyond the end of backing image work.
Unallocated reads beyond the end of the backing file should produce
zeroes.
Writes beyond the end of the backing file should copy-on-write using
zeroes.
Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
Stefan Hajnoczi [Fri, 15 Oct 2010 14:55:52 +0000 (07:55 -0700)]
qemu-iotests: add sub-cluster allocating write test for sparse image formats
Image formats that grow the image file on demand and are organized into
clusters must handle sub-cluster allocating writes. Such writes touch
a portion of a previously unallocated data cluster. After the image
file is grown with the written data, reads of that cluster should work
as expected:
1. Sectors before the written region are zero.
2. The written region is present and the data is uncorrupted.
3. Sectors after the written region are zero.
Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
Kevin Wolf [Fri, 15 Oct 2010 14:53:00 +0000 (07:53 -0700)]
qemu-iotests: improve test for qemu-img convert with backing file
Additionally to testing the qemu-img convert -B option, also test
-o backing_file.
Also, the old test acidentlly used a pattern of zeros for most of the writes,
so that the allocation test didn't really work out. This is fixed by using an
explicit pattern.
Signed-off-by: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
Stefan Hajnoczi [Mon, 26 Apr 2010 09:44:05 +0000 (11:44 +0200)]
qemu-iotests: explicitly use bash interpreter
The tests use bash language features like 'let', which aren't supported
by /bin/sh on systems that use a conservative shell like dash. This
patch changes the interpreter to /bin/bash.
Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
Kevin Wolf [Thu, 1 Oct 2009 17:30:19 +0000 (14:30 -0300)]
qemu-iotests: test larger clusters sizes on qcow2
This patch adds test case 023 which tests some more cluster sizes. For
anythinger larger than 4k clusters we can't use requests that are l2_size or
more (128k for 1k clusters, 2 MB for 4k clusters, 512 MB for 64k clusters).
Therefore one of the common.pattern cases is changed and needs new expected
results for some old test cases.
Signed-off-by: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
Kevin Wolf [Thu, 1 Oct 2009 17:29:59 +0000 (14:29 -0300)]
qemu-iotests: align test requests according to cluster size
Change the io_test and io_test2 functions to take the cluster size of the image
and the number of test requests to issue. Tests are changed to specify a
cluster size (usually 4k), but expected test results stay the same for now
(apart from qemu-img printing the cluster size now).
Based on a patch written by Christoph Hellwig.
Signed-off-by: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
qemu-iotests: replace FSF postal addresses with www.gnu.org links
Blue Swirl notices that we were using the old FSF post address in the
license boilerplates. Replace both the old and new address with links
to the gnu.org licenses homepage as suggested by Ben Pfaff.
Stefan Weil [Tue, 14 Jul 2009 21:16:00 +0000 (23:16 +0200)]
qemu-iotests: fix pattern for write test
The write pattern value 0axb is invalid and evaluates to 0,
so the read check (which uses a correct value of 0xab) will fail.
This failure will only be detected with a separate patch for
qemu-io. Without it, qemu-io cannot interpret hex values
and always uses a pattern value of 0.
Signed-off-by: Stefan Weil <weil@mail.berlios.de> Signed-off-by: Christoph Hellwig <hch@lst.de>
projects / qemu-upstream-unstable.git / log