qemu-iotests: fix 019 golden output

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>

qemu-iotests: update expected results after qemu-img changes

The error message for leaked clusters has changed. qemu-iotests needs to be
updated to pass 026 again.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>

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>

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>

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>

qemu-iotests: consider more cases in parsing qemu-io output

I got a bug report with test output diffs like this:

-4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+4 KiB, 1 ops; 0.0000 sec (inf EiB/sec and inf ops/sec)

This patch extends the regular expression to consider terabytes, petabytes and
exabytes, and to allow inf as value for the throughput.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>

qemu-iotests: qcow2 error path tests

This adds test cases for qcow2 error paths (using blkdebug)

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>

qemu-iotests: improve rebase test

The old test didn't consider cases in which the COW files contains some
unallocated clusters and after them allocated ones again.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>

qemu-iotests: test bdrv_truncate

This patch adds an image resize grow test to ensure that existing data
is not lost during grow and new space is zeroed.

Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>

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>

qemu-iotests: test qemu-img rebase

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>

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>

qemu-iotests: 019: Make cluster size dynamic

Change the offsets for test requests according to CLUSTER_SIZE.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>

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: add support for vdi format "static" option

VDI supports an image option 'static'.
Ignore "static=off" from qemu-img output.

Signed-off-by: Stefan Weil <weil@mail.berlios.de>
Signed-off-by: Christoph Hellwig <hch@lst.de>

qemu-iotests: fix expected result for 019 after qemu-io change

The output of the alloc command in qemu-io has changed.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>

qemu-iotests: test bdrv_load/save_vmstate

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>

qemu-iotests: common.pattern: allow spaces in io() operation

We need to be able to pass "write -b" as an operation to the pattern testing
functions. Unfortunately, this contains a space character...

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>

qemu-iotests: test invalid pattern argument handling in qemu-io

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>

qemu-iotests: replace FSF postal addresses with 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.

Signed-off-by: Christoph Hellwig <hch@lst.de>

qemu-iotests: test commiting changes to backing file

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>

qemu-iotests: test qemu-img convert with backing file for the output image

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>

qemu-iotests: test merge of backing file when converting

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>

qemu-iotests: simple backing file test

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>

qemu-iotests: test I/O after EOF for growable files

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviwed-by: Kevin Wolf <kwolf@redhat.com>

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>

qemu-iotests: make a few more tests generic

Pretend that a non-implemented check is always successful and thus allow
various tests that were qcow2-specific before to be generic.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>

qemu-iotests: remove test image after 015 is done

Signed-off-by: Christoph Hellwig <hch@lst.de>

qemu-iotests: add support for the vdi image format

Signed-off-by: Christoph Hellwig <hch@lst.de>

qemu-iotests: add test for refcount table growth and snapshots

015: Combined test to grow the refcount table and test snapshots.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>

qemu-iotests: skip test 005 for vpc format images

The vpc format doesn't support large enough image size for this test.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>

qemu-iotests: Initial import into the public repository.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>