diff options
| author | Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> | 2010-10-15 07:55:52 -0700 |
|---|---|---|
| committer | Kevin Wolf <kwolf@redhat.com> | 2012-02-22 16:17:03 +0100 |
| commit | 89d22bc30629f6b89ed7fcbe4c7c6a6d1a9fd626 (patch) | |
| tree | d59f2d6e2d96263562df6605244cc4588b5a8e97 /tests/qemu-iotests/027.out | |
| parent | 2547caa16964e3082efdd25e50120c0a35ef5252 (diff) | |
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>
Diffstat (limited to 'tests/qemu-iotests/027.out')
| -rw-r--r-- | tests/qemu-iotests/027.out | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/tests/qemu-iotests/027.out b/tests/qemu-iotests/027.out new file mode 100644 index 0000000000..a45c303724 --- /dev/null +++ b/tests/qemu-iotests/027.out @@ -0,0 +1,23 @@ +QA output created by 027 +Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134217728 + +== writing first cluster to populate metadata == +wrote 65536/65536 bytes at offset 65536 +64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) + +== writing at sub-cluster granularity == +wrote 2048/2048 bytes at offset 1024 +2 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) + +== verify pattern == +read 2048/2048 bytes at offset 1024 +2 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) + +== verify zeroes before sub-cluster pattern == +read 2048/2048 bytes at offset 0 +2 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) + +== verify zeroes after sub-cluster pattern == +read 2560/2560 bytes at offset 1024 +2 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +*** done |