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Max Reitz d20418ee51 block/vdi: Limit maximum size even futher 
The block layer read and write functions do not like requests which are
bigger than INT_MAX bytes. Since the VDI bmap is read and written in a
single operation, its size is therefore limited accordingly. This
reduces the maximum VDI image size supported by QEMU to half of what it
currently is (down to approximately 512 TB).

The VDI test 084 has to be adapted accordingly. Actually, one could
clearly see that it was broken from the "Could not open
'TEST_DIR/t.IMGFMT': Invalid argument" line for an image which was
supposed to work just fine.

Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Peter Lieven <pl@kamp.de>
 		2014-11-09 23:39:50 +01:00
..
sample_images iotests: add v2 parallels sample image and simple test for it 2014-11-03 09:48:41 +00:00
.gitignore .gitignore: ignore tests/qemu-iotests/socket_scm_helper 2013-10-01 16:06:07 +04:00
001 qemu-iotests: Quote $TEST_IMG* and $TEST_DIR usage 2013-09-27 11:10:45 +02:00
001.out qemu-iotests: Initial import into the public repository. 2012-02-22 16:15:22 +01:00
002 qemu-iotests: Quote $TEST_IMG* and $TEST_DIR usage 2013-09-27 11:10:45 +02:00
002.out qemu-iotests: A few more bdrv_pread/pwrite tests 2013-04-15 08:26:18 +02:00
003 qemu-iotests: Quote $TEST_IMG* and $TEST_DIR usage 2013-09-27 11:10:45 +02:00
003.out qemu-iotests: Initial import into the public repository. 2012-02-22 16:15:22 +01:00
004 qemu-iotests: Quote $TEST_IMG* and $TEST_DIR usage 2013-09-27 11:10:45 +02:00
004.out qemu-iotests: Initial import into the public repository. 2012-02-22 16:15:22 +01:00
005 qemu-iotests: Don't run 005 on vmdk split formats 2014-02-14 18:05:39 +01:00
005.out iotests: fix error in 005 2012-04-19 15:48:52 +02:00
006 qemu-iotests: add support for rbd and sheepdog protocols 2012-02-23 10:29:46 +01:00
006.out qemu-iotests: Initial import into the public repository. 2012-02-22 16:15:22 +01:00
007 qemu-iotests: Quote $TEST_IMG* and $TEST_DIR usage 2013-09-27 11:10:45 +02:00
007.out qemu-iotests: Initial import into the public repository. 2012-02-22 16:15:22 +01:00
008 qemu-iotests: Quote $TEST_IMG* and $TEST_DIR usage 2013-09-27 11:10:45 +02:00
008.out qemu-iotests: Initial import into the public repository. 2012-02-22 16:15:22 +01:00
009 qemu-iotests: Quote $TEST_IMG* and $TEST_DIR usage 2013-09-27 11:10:45 +02:00
009.out qemu-iotests: Initial import into the public repository. 2012-02-22 16:15:22 +01:00
010 qemu-iotests: Quote $TEST_IMG* and $TEST_DIR usage 2013-09-27 11:10:45 +02:00
010.out qemu-iotests: Initial import into the public repository. 2012-02-22 16:15:22 +01:00
011 qemu-iotests: Quote $TEST_IMG* and $TEST_DIR usage 2013-09-27 11:10:45 +02:00
011.out qemu-iotests: Initial import into the public repository. 2012-02-22 16:15:22 +01:00
012 qemu-iotests: Quote $TEST_IMG* and $TEST_DIR usage 2013-09-27 11:10:45 +02:00
012.out qemu-io: correctly print non-integer values as decimals 2012-05-10 10:32:12 +02:00
013 qemu-iotests: change _supported_proto to file for various tests 2014-02-09 09:12:38 +01:00
013.out qemu-iotests: Filter out 'qemu-io> ' prompt 2013-11-29 17:41:13 +01:00
014 qemu-iotests: change _supported_proto to file for various tests 2014-02-09 09:12:38 +01:00
014.out qemu-iotests: Filter out 'qemu-io> ' prompt 2013-11-29 17:41:13 +01:00
015 qemu-iotests: Quote $TEST_IMG* and $TEST_DIR usage 2013-09-27 11:10:45 +02:00
015.out qemu-iotests: Always filter cluster_size out in _make_test_img 2012-04-19 15:48:52 +02:00
016 qemu-iotests: enable test 016 and 025 to work with NFS protocol 2014-02-09 09:12:38 +01:00
016.out qemu-io: correctly print non-integer values as decimals 2012-05-10 10:32:12 +02:00
017 qemu-iotests: Add _unsupported_imgopts for vmdk subformats 2014-01-22 12:07:16 +01:00
017.out qemu-iotests: Filter out 'qemu-io> ' prompt 2013-11-29 17:41:13 +01:00
018 qemu-iotests: change _supported_proto to file for various tests 2014-02-09 09:12:38 +01:00
018.out qemu-iotests: Filter out 'qemu-io> ' prompt 2013-11-29 17:41:13 +01:00
019 block: qemu-iotests: make test 019 and 086 work with spaced pathnames 2014-04-29 16:19:37 +02:00
019.out qemu-iotests: Filter out 'qemu-io> ' prompt 2013-11-29 17:41:13 +01:00
020 qemu-iotests: blacklist test 020 for NFS protocol 2014-02-09 09:12:38 +01:00
020.out qemu-iotests: Filter out 'qemu-io> ' prompt 2013-11-29 17:41:13 +01:00
021 qemu-iotests: Quote $TEST_IMG* and $TEST_DIR usage 2013-09-27 11:10:45 +02:00
021.out qemu-iotests: test invalid pattern argument handling in qemu-io 2012-02-22 16:17:02 +01:00
022 qemu-iotests: add support for rbd and sheepdog protocols 2012-02-23 10:29:46 +01:00
022.out qemu-iotests: Filter out 'qemu-io> ' prompt 2013-11-29 17:41:13 +01:00
023 qemu-iotests: change _supported_proto to file for various tests 2014-02-09 09:12:38 +01:00
023.out qemu-iotests: Filter out 'qemu-io> ' prompt 2013-11-29 17:41:13 +01:00
024 qemu-iotests: change _supported_proto to file for various tests 2014-02-09 09:12:38 +01:00
024.out qemu-iotests: Filter out 'qemu-io> ' prompt 2013-11-29 17:41:13 +01:00
025 qemu-iotests: Run 025 for Archipelago block driver 2014-09-10 10:41:29 +02:00
025.out qemu-iotests: Filter out 'qemu-io> ' prompt 2013-11-29 17:41:13 +01:00
026 qemu-iotests: change _supported_proto to file for various tests 2014-02-09 09:12:38 +01:00
026.out qcow2: Don't rely on free_cluster_index in alloc_refcount_block() (CVE-2014-0147) 2014-04-01 15:21:03 +02:00
026.out.nocache qemu-iotests: Correct 026 output 2013-10-07 13:23:19 +02:00
027 qemu-iotests: Quote $TEST_IMG* and $TEST_DIR usage 2013-09-27 11:10:45 +02:00
027.out qemu-io: correctly print non-integer values as decimals 2012-05-10 10:32:12 +02:00
028 qemu-iotests: Fix 028 reference output for qed 2014-08-20 11:51:28 +02:00
028.out qemu-iotests: Fix 028 reference output for qed 2014-08-20 11:51:28 +02:00
029 qcow2: Fix L1 allocation size in qcow2_snapshot_load_tmp() (CVE-2014-0145) 2014-04-01 15:22:35 +02:00
029.out qcow2: Fix L1 allocation size in qcow2_snapshot_load_tmp() (CVE-2014-0145) 2014-04-01 15:22:35 +02:00
030 qemu-iotests: Fix blkdebug in VM drive in 030 2014-05-19 11:36:49 +02:00
030.out qemu-iotests: add tests for streaming error handling 2012-09-28 19:40:56 +02:00
031 iotests: Use $PYTHON for Python scripts 2014-06-27 20:00:00 +02:00
031.out qcow2: Add corrupt bit 2013-08-30 15:48:43 +02:00
032 qemu-iotests: Quote $TEST_IMG* and $TEST_DIR usage 2013-09-27 11:10:45 +02:00
032.out qemu-iotests: Filter out 'qemu-io> ' prompt 2013-11-29 17:41:13 +01:00
033 qemu-iotests: Quote $TEST_IMG* and $TEST_DIR usage 2013-09-27 11:10:45 +02:00
033.out qemu-io: correctly print non-integer values as decimals 2012-05-10 10:32:12 +02:00
034 qemu-iotests: change _supported_proto to file for various tests 2014-02-09 09:12:38 +01:00
034.out qemu-iotests: Test backing file COW with zero clusters 2012-04-20 15:57:30 +02:00
035 qemu-iotests: Quote $TEST_IMG* and $TEST_DIR usage 2013-09-27 11:10:45 +02:00
035.out qemu-iotests: Filter out 'qemu-io> ' prompt 2013-11-29 17:41:13 +01:00
036 qcow2: Fix error path for unknown incompatible features 2014-07-18 13:12:15 +01:00
036.out qcow2: Fix error path for unknown incompatible features 2014-07-18 13:12:15 +01:00
037 qemu-iotests: change _supported_proto to file for various tests 2014-02-09 09:12:38 +01:00
037.out qemu-iotests: Filter out 'qemu-io> ' prompt 2013-11-29 17:41:13 +01:00
038 qemu-iotests: change _supported_proto to file for various tests 2014-02-09 09:12:38 +01:00
038.out qemu-iotests: Filter out 'qemu-io> ' prompt 2013-11-29 17:41:13 +01:00
039 iotests: Use $PYTHON for Python scripts 2014-06-27 20:00:00 +02:00
039.out iotests: Fix test outputs 2014-10-23 15:34:01 +02:00
040 iotests: Omit length/offset test in 040 and 041 2014-11-03 11:41:48 +00:00
040.out qemu-iotests: Test BLOCK_JOB_READY event for 0Kb image active commit 2014-06-26 13:51:00 +02:00
041 iotests: Omit length/offset test in 040 and 041 2014-11-03 11:41:48 +00:00
041.out mirror: Fix qiov size for short requests 2014-07-07 09:15:29 +02:00
042 qemu-iotests: Quote $TEST_IMG* and $TEST_DIR usage 2013-09-27 11:10:45 +02:00
042.out qemu-iotests: Test qemu-img operation on zero size image 2012-10-24 10:26:18 +02:00
043 qemu-iotests: change _supported_proto to file for various tests 2014-02-09 09:12:38 +01:00
043.out qemu-iotests: Add 043 backing file chain infinite loop test 2012-10-24 10:26:19 +02:00
044 qemu-iotests: qcow2: Test growing large refcount table 2012-11-14 18:19:21 +01:00
044.out qcow2: Don't rely on free_cluster_index in alloc_refcount_block() (CVE-2014-0147) 2014-04-01 15:21:03 +02:00
045 qemu-iotests: add tests for runtime fd passing via SCM rights 2013-09-12 10:12:47 +02:00
045.out qemu-iotests: add tests for runtime fd passing via SCM rights 2013-09-12 10:12:47 +02:00
046 qcow2: Set zero flag for discarded clusters 2014-02-21 21:02:21 +01:00
046.out qemu-iotests: Filter out 'qemu-io> ' prompt 2013-11-29 17:41:13 +01:00
047 qemu-iotests: Quote $TEST_IMG* and $TEST_DIR usage 2013-09-27 11:10:45 +02:00
047.out qemu-iotests: Filter out 'qemu-io> ' prompt 2013-11-29 17:41:13 +01:00
048 qemu-iotests: Split qcow2 only cases in 048 2013-12-04 14:31:39 +01:00
048.out qemu-iotests: Split qcow2 only cases in 048 2013-12-04 14:31:39 +01:00
049 qemu-iotests: Quote $TEST_IMG* and $TEST_DIR usage 2013-09-27 11:10:45 +02:00
049.out qapi: introduce PreallocMode and new PreallocModes full and falloc. 2014-09-12 15:43:06 +02:00
050 qemu-iotests: Quote $TEST_IMG* and $TEST_DIR usage 2013-09-27 11:10:45 +02:00
050.out qemu-iotests: add tests for rebasing zero clusters 2013-03-15 16:07:51 +01:00
051 block: Catch simultaneous usage of options and their aliases 2014-09-25 15:24:14 +02:00
051.out block: Catch simultaneous usage of options and their aliases 2014-09-25 15:24:14 +02:00
052 qemu-iotests: Fix supported cache modes for 052 2014-10-03 10:30:33 +01:00
052.out qemu-iotests: add 052 BDRV_O_SNAPSHOT test 2013-03-19 11:48:37 +01:00
053 qemu-iotests: Quote $TEST_IMG* and $TEST_DIR usage 2013-09-27 11:10:45 +02:00
053.out qemu-iotests: add 053 unaligned compressed image size test 2013-04-22 11:37:12 +02:00
054 iotests: Use $PYTHON for Python scripts 2014-06-27 20:00:00 +02:00
054.out qemu-iotests: Adjustments due to error propagation 2013-09-12 10:12:48 +02:00
055 qemu-iotests: Make test case 030, 040 and 055 deterministic 2013-11-29 13:40:37 +01:00
055.out Add tests for sync modes 'TOP' and 'NONE' 2013-07-26 22:01:31 +02:00
056 qemu-iotests: Improve and make use of QMPTestCase.wait_until_completed() 2014-04-25 18:05:05 +02:00
056.out Add tests for sync modes 'TOP' and 'NONE' 2013-07-26 22:01:31 +02:00
057 qemu-iotests: add 057 internal snapshot for block device test case 2013-09-12 10:12:47 +02:00
057.out qemu-iotests: add 057 internal snapshot for block device test case 2013-09-12 10:12:47 +02:00
058 qemu-iotests: add test for snapshot in qemu-img convert 2013-12-04 15:19:00 +01:00
058.out qemu-iotests: add test for snapshot in qemu-img convert 2013-12-04 15:19:00 +01:00
059 qemu-iotests: Add data pattern in version3 VMDK sample image in 059 2014-08-15 15:07:13 +02:00
059.out qemu-iotests: Add data pattern in version3 VMDK sample image in 059 2014-08-15 15:07:13 +02:00
060 iotests: qemu-img info output for corrupt image 2014-10-04 19:18:17 +01:00
060.out iotests: Fix test outputs 2014-10-23 15:34:01 +02:00
061 iotests: Expand test 061 2014-11-03 11:41:49 +00:00
061.out iotests: Expand test 061 2014-11-03 11:41:49 +00:00
062 qemu-iotests: Snapshotting zero clusters 2013-08-30 15:28:52 +02:00
062.out qemu-iotests: Snapshotting zero clusters 2013-08-30 15:28:52 +02:00
063 qemu-iotests: change _supported_proto to file for various tests 2014-02-09 09:12:38 +01:00
063.out add qemu-img convert -n option (skip target volume creation) 2013-09-06 15:25:07 +02:00
064 block: qemu-iotests for vhdx, add write test support 2013-11-07 13:58:59 +01:00
064.out block: qemu-iotests for vhdx, add write test support 2013-11-07 13:58:59 +01:00
065 qapi: Add corrupt field to ImageInfoSpecificQCow2 2014-10-04 19:18:17 +01:00
065.out qemu-iotests: Additional info from qemu-img info 2013-10-11 16:49:50 +02:00
066 qemu-iotests: Discard preallocated zero clusters 2013-10-11 16:49:59 +02:00
066.out qemu-iotests: Discard preallocated zero clusters 2013-10-11 16:49:59 +02:00
067 qemu-iotests: Filter out actual image size in 067 2013-11-07 13:53:30 +01:00
067.out qapi: Add corrupt field to ImageInfoSpecificQCow2 2014-10-04 19:18:17 +01:00
068 qemu-iotests: Test for loading VM state from qcow2 2013-10-25 11:08:20 +02:00
068.out qemu-iotests: Test for loading VM state from qcow2 2013-10-25 11:08:20 +02:00
069 block: delete cow block driver 2014-09-22 11:39:45 +01:00
069.out block: Print its file name if backing file opening failed 2013-11-14 13:09:06 +01:00
070 iotests: Use _img_info 2014-10-04 19:18:17 +01:00
070.out iotests: Use _img_info 2014-10-04 19:18:17 +01:00
071 qemu-iotests: change _supported_proto to file for various tests 2014-02-09 09:12:38 +01:00
071.out iotests: Test new blkdebug/blkverify interface 2014-01-22 12:07:18 +01:00
072 block: delete cow block driver 2014-09-22 11:39:45 +01:00
072.out iotests: Test file format nesting 2014-01-22 12:07:18 +01:00
073 qemu-iotests: Test qcow2 count_contiguous_clusters() 2013-11-15 13:37:43 +01:00
073.out qemu-iotests: Test qcow2 count_contiguous_clusters() 2013-11-15 13:37:43 +01:00
074 qemu-iotests: Split qcow2 only cases in 048 2013-12-04 14:31:39 +01:00
074.out qemu-iotests: Split qcow2 only cases in 048 2013-12-04 14:31:39 +01:00
075 block: qemu-iotests change _supported_proto to file once more. 2014-10-23 15:34:01 +02:00
075.out block/cloop: fix offsets[] size off-by-one 2014-04-01 13:59:47 +02:00
076 iotests: add v2 parallels sample image and simple test for it 2014-11-03 09:48:41 +00:00
076.out iotests: add v2 parallels sample image and simple test for it 2014-11-03 09:48:41 +00:00
077 qemu-iotest: Make 077 raw-only 2014-02-09 09:12:38 +01:00
077.out qemu-iotests: Test pwritev RMW logic 2014-01-24 17:40:25 +01:00
078 block: qemu-iotests change _supported_proto to file once more. 2014-10-23 15:34:01 +02:00
078.out bochs: Fix catalog size check 2014-04-11 13:59:49 +02:00
079 block: qemu-iotests change _supported_proto to file once more. 2014-10-23 15:34:01 +02:00
079.out qemu-iotests: add test for qcow2 preallocation with different cluster sizes 2014-02-09 09:12:39 +01:00
080 block: qemu-iotests change _supported_proto to file once more. 2014-10-23 15:34:01 +02:00
080.out qcow2: Check maximum L1 size in qcow2_snapshot_load_tmp() (CVE-2014-0143) 2014-04-01 15:22:35 +02:00
081 block: qemu-iotests change _supported_proto to file once more. 2014-10-23 15:34:01 +02:00
081.out quorum: Add the rewrite-corrupted parameter to quorum 2014-06-27 14:18:17 +02:00
082 block: qemu-iotests change _supported_proto to file once more. 2014-10-23 15:34:01 +02:00
082.out qapi: Add corrupt field to ImageInfoSpecificQCow2 2014-10-04 19:18:17 +01:00
083 iotests: Fix 083 for out-of-tree builds 2014-06-27 20:00:01 +02:00
083.out qemu-iotests: add 083 NBD client disconnect tests 2014-03-14 16:29:02 +01:00
084 block/vdi: Limit maximum size even futher 2014-11-09 23:39:50 +01:00
084.out block/vdi: Limit maximum size even futher 2014-11-09 23:39:50 +01:00
085 block: qemu-iotests - update 085 to use common.qemu 2014-05-09 20:57:32 +02:00
085.out block: qemu-iotests 085 - live snapshots tests 2014-03-07 11:36:12 +01:00
086 block: qemu-iotests change _supported_proto to file once more. 2014-10-23 15:34:01 +02:00
086.out qemu-iotests: Test progress output for conversion 2014-03-05 15:58:32 +01:00
087 qemu-iotests: Test missing "driver" key for blockdev-add 2014-09-26 13:14:11 -04:00
087.out Merge remote-tracking branch 'remotes/qmp-unstable/queue/qmp' into staging 2014-09-29 18:18:29 +01:00
088 block: qemu-iotests change _supported_proto to file once more. 2014-10-23 15:34:01 +02:00
088.out vpc: Validate block size (CVE-2014-0142) 2014-04-01 13:59:47 +02:00
089 iotests: Use _img_info in test 089 2014-05-28 14:28:46 +02:00
089.out qapi: Add corrupt field to ImageInfoSpecificQCow2 2014-10-04 19:18:17 +01:00
090 block: qemu-iotests change _supported_proto to file once more. 2014-10-23 15:34:01 +02:00
090.out iotests: Discarding compressed clusters on qcow2 2014-04-29 16:39:51 +02:00
091 qemu-iotests: Handle cache mode option in 091 2014-05-28 14:22:25 +02:00
091.out block: qemu-iotests - test for live migration 2014-05-09 20:57:32 +02:00
092 block: qemu-iotests change _supported_proto to file once more. 2014-10-23 15:34:01 +02:00
092.out qcow1: Stricter backing file length check 2014-05-19 11:36:49 +02:00
095 iotests: Use _img_info 2014-10-04 19:18:17 +01:00
095.out iotests: Use _img_info 2014-10-04 19:18:17 +01:00
097 iotests: Add test for backing-chain commits 2014-11-03 11:41:48 +00:00
097.out iotests: Add test for backing-chain commits 2014-11-03 11:41:48 +00:00
098 iotests: Add test for qcow2's bdrv_make_empty 2014-11-03 11:41:48 +00:00
098.out iotests: Add test for qcow2's bdrv_make_empty 2014-11-03 11:41:48 +00:00
099 block: delete cow block driver 2014-09-22 11:39:45 +01:00
099.out iotests: Add test for image filename construction 2014-08-20 14:33:42 +02:00
100 qemu-iotests: add multiwrite test cases 2014-08-29 14:10:15 +01:00
100.out qemu-iotests: add multiwrite test cases 2014-08-29 14:10:15 +01:00
101 qemu-iotests: add test case 101 for short file I/O 2014-08-22 11:01:12 +02:00
101.out qemu-iotests: add test case 101 for short file I/O 2014-08-22 11:01:12 +02:00
102 iotests: Add test for external image truncation 2014-11-03 11:41:47 +00:00
102.out iotests: Add test for external image truncation 2014-11-03 11:41:47 +00:00
103 block: qemu-iotests change _supported_proto to file once more. 2014-10-23 15:34:01 +02:00
103.out iotests: Add test for qcow2's cache options 2014-08-20 11:51:28 +02:00
104 block: round up file size to nearest sector 2014-09-12 15:43:06 +02:00
104.out block: round up file size to nearest sector 2014-09-12 15:43:06 +02:00
105 vmdk: Fix integer overflow in offset calculation 2014-10-03 10:30:33 +01:00
105.out vmdk: Fix integer overflow in offset calculation 2014-10-03 10:30:33 +01:00
107 block: qemu-iotest 107 supports NFS 2014-11-03 11:41:48 +00:00
107.out iotests: Add test for qcow2 L1 table update 2014-10-23 15:34:02 +02:00
108 iotests: Add test for potentially damaging repairs 2014-10-23 15:34:01 +02:00
108.out iotests: Add test for potentially damaging repairs 2014-10-23 15:34:01 +02:00
111 iotests: Add test for non-existing backing file 2014-11-06 12:45:47 +01:00
111.out iotests: Add test for non-existing backing file 2014-11-06 12:45:47 +01:00
COPYING qemu-iotests: Initial import into the public repository. 2012-02-22 16:15:22 +01:00
Makefile qemu-iotests: Initial import into the public repository. 2012-02-22 16:15:22 +01:00
README qemu-iotests: README: Fix spelling 2012-02-23 10:29:46 +01:00
check iotests: Use $PYTHON for Python scripts 2014-06-27 20:00:00 +02:00
common qemu-iotests: Fail test if explicit test case number is unknown 2014-09-25 15:25:20 +02:00
common.config iotests: Allow out-of-tree run 2014-06-27 20:00:00 +02:00
common.filter iotests: Add _filter_qemu_img_map 2014-11-03 11:41:48 +00:00
common.pattern block: qemu-iotests, add quotes to $TEST_IMG usage io pattern tests 2013-11-07 13:53:31 +01:00
common.qemu Fix new typos (found by codespell) 2014-06-24 20:01:24 +04:00
common.rc qemu-iotests: Fix 028 reference output for qed 2014-08-20 11:51:28 +02:00
group iotests: Add test for non-existing backing file 2014-11-06 12:45:47 +01:00
iotests.py iotests: Omit length/offset test in 040 and 041 2014-11-03 11:41:48 +00:00
nbd-fault-injector.py tests: add nbd-fault-injector.py utility 2014-03-14 16:28:28 +01:00
qcow2.py qcow2: Fix error path for unknown incompatible features 2014-07-18 13:12:15 +01:00
qed.py qemu-iotests: add qed.py image manipulation utility 2012-08-06 22:39:14 +02:00
socket_scm_helper.c iotests: Send the correct fd in socket_scm_helper 2014-09-12 10:27:54 +02:00

README 

=== 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.