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Alberto Garcia abf754fe40 qcow2: Reset free_cluster_index when allocating a new refcount block 
When we try to allocate new clusters we first look for available ones
starting from s->free_cluster_index and once we find them we increase
their reference counts. Before we get to call update_refcount() to do
this last step s->free_cluster_index is already pointing to the next
cluster after the ones we are trying to allocate.

During update_refcount() it may happen however that we also need to
allocate a new refcount block in order to store the refcounts of these
new clusters (and to complicate things further that may also require
us to grow the refcount table). After all this we don't know if the
clusters that we originally tried to allocate are still available, so
we return -EAGAIN to ask the caller to restart the search for free
clusters.

This is what can happen in a common scenario:

  1) We want to allocate a new cluster and we see that cluster N is
     free.

  2) We try to increase N's refcount but all refcount blocks are full,
     so we allocate a new one at N+1 (where s->free_cluster_index was
     pointing at).

  3) Once we're done we return -EAGAIN to look again for a free
     cluster, but now s->free_cluster_index points at N+2, so that's
     the one we allocate. Cluster N remains unallocated and we have a
     hole in the qcow2 file.

This can be reproduced easily:

     qemu-img create -f qcow2 -o cluster_size=512 hd.qcow2 1M
     qemu-io -c 'write 0 124k' hd.qcow2

After this the image has 132608 bytes (256 clusters), and the refcount
block is full. If we write 512 more bytes it should allocate two new
clusters: the data cluster itself and a new refcount block.

     qemu-io -c 'write 124k 512' hd.qcow2

However the image has now three new clusters (259 in total), and the
first one of them is empty (and unallocated):

     dd if=hd.qcow2 bs=512c skip=256 count=1 | hexdump -C

If we write larger amounts of data in the last step instead of the 512
bytes used in this example we can create larger holes in the qcow2
file.

What this patch does is reset s->free_cluster_index to its previous
value when alloc_refcount_block() returns -EAGAIN. This way the caller
will try to allocate again the original clusters if they are still
free.

The output of iotest 026 also needs to be updated because now that
images have no holes some tests fail at a different point and the
number of leaked clusters is different.

Signed-off-by: Alberto Garcia <berto@igalia.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2018-03-26 12:16:00 +02:00
..
sample_images
iotests: Fix CID for VMDK afl image
2018-02-13 12:27:17 +01:00
.gitignore
iotests: record separate timings per format,protocol pair
2017-02-12 00:47:42 +01:00
001
qemu-iotests: tests: do not set unused tmp variable
2016-04-15 17:56:56 +02:00
001.out
qemu-iotests: Remove traling whitespaces in *.out
2014-12-12 16:52:33 +00:00
002
qemu-iotests: tests: do not set unused tmp variable
2016-04-15 17:56:56 +02:00
002.out
qemu-iotests: Remove traling whitespaces in *.out
2014-12-12 16:52:33 +00:00
003
qemu-iotests: tests: do not set unused tmp variable
2016-04-15 17:56:56 +02:00
003.out
qemu-iotests: Remove traling whitespaces in *.out
2014-12-12 16:52:33 +00:00
004
block: enable testing of LUKS driver with block I/O tests
2016-05-12 15:33:24 +02:00
004.out
qemu-iotests: Remove traling whitespaces in *.out
2014-12-12 16:52:33 +00:00
005
qemu-iotests: tests: do not set unused tmp variable
2016-04-15 17:56:56 +02:00
005.out
qemu-iotests: Remove traling whitespaces in *.out
2014-12-12 16:52:33 +00:00
007
qemu-iotests: tests: do not set unused tmp variable
2016-04-15 17:56:56 +02:00
007.out
qemu-iotests: Remove traling whitespaces in *.out
2014-12-12 16:52:33 +00:00
008
qemu-iotests: tests: do not set unused tmp variable
2016-04-15 17:56:56 +02:00
008.out
qemu-iotests: Remove traling whitespaces in *.out
2014-12-12 16:52:33 +00:00
009
qemu-iotests: tests: do not set unused tmp variable
2016-04-15 17:56:56 +02:00
009.out
qemu-iotests: Remove traling whitespaces in *.out
2014-12-12 16:52:33 +00:00
010
qemu-iotests: tests: do not set unused tmp variable
2016-04-15 17:56:56 +02:00
010.out
qemu-iotests: Remove traling whitespaces in *.out
2014-12-12 16:52:33 +00:00
011
qemu-iotests: tests: do not set unused tmp variable
2016-04-15 17:56:56 +02:00
011.out
qemu-iotests: Remove traling whitespaces in *.out
2014-12-12 16:52:33 +00:00
012
block: enable testing of LUKS driver with block I/O tests
2016-05-12 15:33:24 +02:00
012.out
qemu-iotests: Remove traling whitespaces in *.out
2014-12-12 16:52:33 +00:00
013
qemu-iotests: tests: do not set unused tmp variable
2016-04-15 17:56:56 +02:00
013.out
qemu-iotests: Remove traling whitespaces in *.out
2014-12-12 16:52:33 +00:00
014
qemu-iotests: tests: do not set unused tmp variable
2016-04-15 17:56:56 +02:00
014.out
qemu-iotests: Remove traling whitespaces in *.out
2014-12-12 16:52:33 +00:00
015
qemu-iotests: tests: do not set unused tmp variable
2016-04-15 17:56:56 +02:00
015.out
qemu-iotests: Remove traling whitespaces in *.out
2014-12-12 16:52:33 +00:00
017
qemu-iotests: exclude vxhs from image creation via protocol
2017-04-24 15:09:33 -04:00
017.out
opts: produce valid command line in qemu_opts_print
2015-09-11 10:21:38 +03:00
018
qemu-iotests: tests: do not set unused tmp variable
2016-04-15 17:56:56 +02:00
018.out
iotests: 018: Use TEST_IMG override instead of "mv"
2016-01-07 21:30:17 +01:00
019
qemu-iotests: tests: do not set unused tmp variable
2016-04-15 17:56:56 +02:00
019.out
qemu-io: Switch 'alloc' command to byte-based length
2017-05-11 14:28:05 +02:00
020
iotests: Fix 020 for vmdk
2018-01-23 12:34:43 +01:00
020.out
iotests: Fix 020 for vmdk
2018-01-23 12:34:43 +01:00
021
qemu-iotests: tests: do not set unused tmp variable
2016-04-15 17:56:56 +02:00
021.out
qemu-iotests: Remove traling whitespaces in *.out
2014-12-12 16:52:33 +00:00
022
qemu-iotests: tests: do not set unused tmp variable
2016-04-15 17:56:56 +02:00
022.out
qemu-iotests: Remove traling whitespaces in *.out
2014-12-12 16:52:33 +00:00
023
qemu-iotests: tests: do not set unused tmp variable
2016-04-15 17:56:56 +02:00
023.out
qemu-io: Allow unaligned access by default
2016-05-12 15:33:24 +02:00
024
qemu-iotests: tests: do not set unused tmp variable
2016-04-15 17:56:56 +02:00
024.out
iotests: 024: Use TEST_IMG override instead of "mv"
2016-01-07 21:30:17 +01:00
025
block: Drop unmaintained 'archipelago' driver
2017-03-13 12:49:33 +01:00
025.out
qemu-iotests: Remove traling whitespaces in *.out
2014-12-12 16:52:33 +00:00
026
iotests: Fix typo in 026
2017-04-27 15:46:16 +02:00
026.out
qcow2: Reset free_cluster_index when allocating a new refcount block
2018-03-26 12:16:00 +02:00
026.out.nocache
iotests: Fix typo in 026
2017-04-27 15:46:16 +02:00
027
qemu-iotests: tests: do not set unused tmp variable
2016-04-15 17:56:56 +02:00
027.out
qemu-iotests: Remove traling whitespaces in *.out
2014-12-12 16:52:33 +00:00
028
qemu-iotests: _cleanup_qemu must be called on exit
2017-04-24 15:09:33 -04:00
028.out
qemu-iotests: Filter HMP readline escape characters
2017-04-27 15:39:49 +02:00
029
qemu-iotests: exclude vxhs from image creation via protocol
2017-04-24 15:09:33 -04:00
029.out
qemu-iotests: Remove traling whitespaces in *.out
2014-12-12 16:52:33 +00:00
030
iotests: add pause_wait
2018-03-19 12:01:24 +01:00
030.out
iotests: Tweak 030 in order to trigger a race condition with parallel jobs
2018-03-09 15:40:07 +01:00
031
qemu-iotests: tests: do not set unused tmp variable
2016-04-15 17:56:56 +02:00
031.out
qcow2: Write full header on image creation
2016-01-20 13:36:23 +01:00
032
qemu-iotests: tests: do not set unused tmp variable
2016-04-15 17:56:56 +02:00
032.out
qemu-iotests: Remove traling whitespaces in *.out
2014-12-12 16:52:33 +00:00
033
iotests: Fix stuck NBD process on 33
2018-03-13 15:38:55 -05:00
033.out
iotest 033: add misaligned write-zeroes test via truncate
2018-03-02 18:39:07 +01:00
034
block: Switch bdrv_write_zeroes() to byte interface
2016-06-08 10:21:08 +02:00
034.out
iotests: 034: Use TEST_IMG override instead of "mv"
2016-01-07 21:30:17 +01:00
035
qemu-iotests: tests: do not set unused tmp variable
2016-04-15 17:56:56 +02:00
035.out
qemu-iotests: Remove traling whitespaces in *.out
2014-12-12 16:52:33 +00:00
036
qemu-iotests: tests: do not set unused tmp variable
2016-04-15 17:56:56 +02:00
036.out
qapi: Drop QERR_UNKNOWN_BLOCK_FORMAT_FEATURE
2016-03-17 15:47:56 +01:00
037
qemu-iotests: tests: do not set unused tmp variable
2016-04-15 17:56:56 +02:00
037.out
iotests: 037: Use TEST_IMG override instead of "mv"
2016-01-07 21:30:17 +01:00
038
qemu-iotests: tests: do not set unused tmp variable
2016-04-15 17:56:56 +02:00
038.out
iotests: 038: Use TEST_IMG override instead of "mv"
2016-01-07 21:30:17 +01:00
039
qemu-iotests: tests: do not set unused tmp variable
2016-04-15 17:56:56 +02:00
039.out
qemu-iotests: limit non-_PROG-suffixed variables to common.rc
2017-10-06 16:28:58 +02:00
040
iotests: Add missing 'blkdebug::' in 040
2017-11-14 18:06:25 +01:00
040.out
block: Skip implicit nodes in query-block/blockstats
2017-07-24 15:06:04 +02:00
041
qemu-iotests/041: Fix leaked scratch images
2017-08-01 18:09:33 +02:00
041.out
block: Skip implicit nodes in query-block/blockstats
2017-07-24 15:06:04 +02:00
042
iotests: skip 042 with qcow which dosn't support zero sized images
2017-07-11 17:44:55 +02:00
042.out
qemu-iotests: Remove traling whitespaces in *.out
2014-12-12 16:52:33 +00:00
043
qemu-iotests: tests: do not set unused tmp variable
2016-04-15 17:56:56 +02:00
043.out
block/qapi: always report full_backing_filename
2015-12-18 14:36:17 +01:00
044
qemu-iotests: qcow2: Test growing large refcount table
2012-11-14 18:19:21 +01:00
044.out
block/qcow2: Add qcow2_refcount_area()
2017-07-11 17:45:02 +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
iotests: 046: Prepare for image locking
2017-05-11 11:08:40 +02:00
046.out
opts: produce valid command line in qemu_opts_print
2015-09-11 10:21:38 +03:00
047
qemu-iotests: tests: do not set unused tmp variable
2016-04-15 17:56:56 +02:00
047.out
qemu-iotests: Remove traling whitespaces in *.out
2014-12-12 16:52:33 +00:00
048
iotests: skip 048 with qcow which doesn't support resize
2017-07-11 17:44:55 +02:00
048.out
block: enable testing of LUKS driver with block I/O tests
2016-05-12 15:33:24 +02:00
049
qcow2: convert QCow2 to use QCryptoBlock for encryption
2017-07-11 17:44:56 +02:00
049.out
qcow2: Use visitor for options in qcow2_create()
2018-03-09 15:17:47 +01:00
050
qemu-iotests: tests: do not set unused tmp variable
2016-04-15 17:56:56 +02:00
050.out
iotests: 050: Use TEST_IMG override instead of "mv"
2016-01-07 21:30:17 +01:00
051
scsi: Remove automatic creation of SCSI controllers with -drive if=scsi
2018-03-06 14:00:59 +01:00
051.out
iotests: Fix 051 for compat=0.10
2018-01-23 12:34:43 +01:00
051.pc.out
iotests: Fix 051 for compat=0.10
2018-01-23 12:34:43 +01:00
052
block: enable testing of LUKS driver with block I/O tests
2016-05-12 15:33:24 +02:00
052.out
block: enable testing of LUKS driver with block I/O tests
2016-05-12 15:33:24 +02:00
053
qemu-iotests: tests: do not set unused tmp variable
2016-04-15 17:56:56 +02:00
053.out
qemu-iotests: Remove traling whitespaces in *.out
2014-12-12 16:52:33 +00:00
054
qemu-iotests: tests: do not set unused tmp variable
2016-04-15 17:56:56 +02:00
054.out
qemu-iotests: Remove traling whitespaces in *.out
2014-12-12 16:52:33 +00:00
055
iotests: add pause_wait
2018-03-19 12:01:24 +01:00
055.out
qemu-iotests: test backup compression in 055
2016-09-05 19:06:48 +02:00
056
iotests: test manual job dismissal
2018-03-19 12:01:24 +01:00
056.out
iotests: test manual job dismissal
2018-03-19 12:01:24 +01:00
057
block: Accept node-name for blockdev-snapshot-internal-sync
2016-09-05 19:06:47 +02:00
057.out
qemu-iotests: add 057 internal snapshot for block device test case
2013-09-12 10:12:47 +02:00
058
nbd-client: Refuse read-only client with BDRV_O_RDWR
2017-11-09 10:10:17 -06:00
058.out
qemu-iotests: add test for snapshot in qemu-img convert
2013-12-04 15:19:00 +01:00
059
iotests: Skip test for ENOMEM error
2018-03-09 15:40:07 +01:00
059.out
iotests: Fix CID for VMDK afl image
2018-02-13 12:27:17 +01:00
060
qcow2: Repair unaligned preallocated zero clusters
2018-01-23 12:34:42 +01:00
060.out
qcow2: Repair unaligned preallocated zero clusters
2018-01-23 12:34:42 +01:00
061
iotests: Test downgrading an image using a small L2 slice size
2018-02-13 17:00:00 +01:00
061.out
iotests: Test downgrading an image using a small L2 slice size
2018-02-13 17:00:00 +01:00
062
qemu-iotests: tests: do not set unused tmp variable
2016-04-15 17:56:56 +02:00
062.out
qemu-iotests: Remove traling whitespaces in *.out
2014-12-12 16:52:33 +00:00
063
qemu-iotests/063: Fix leaked image
2017-08-01 18:09:33 +02:00
063.out
add qemu-img convert -n option (skip target volume creation)
2013-09-06 15:25:07 +02:00
064
qemu-iotests: tests: do not set unused tmp variable
2016-04-15 17:56:56 +02:00
064.out
iotests: Lower 064's memory usage
2015-01-23 12:41:32 -05:00
065
qcow2: Add refcount_bits to format-specific info
2015-03-10 14:02:20 +01:00
065.out
qemu-iotests: Additional info from qemu-img info
2013-10-11 16:49:50 +02:00
066
iotests: Extend test 066
2017-05-11 12:08:24 +02:00
066.out
iotests: Extend test 066
2017-05-11 12:08:24 +02:00
067
iotests: Fix 067 for compat=0.10
2018-01-23 12:34:43 +01:00
067.out
iotests: Fix 067 for compat=0.10
2018-01-23 12:34:43 +01:00
068
snapshot/tests: Try loadvm twice
2017-09-06 15:19:01 +01:00
068.out
snapshot/tests: Try loadvm twice
2017-09-06 15:19:01 +01:00
069
qemu-iotests: tests: do not set unused tmp variable
2016-04-15 17:56:56 +02:00
069.out
qemu-io qemu-nbd: Use error_report() etc. instead of fprintf()
2016-01-13 15:16:18 +01:00
070
qemu-iotests: tests: do not set unused tmp variable
2016-04-15 17:56:56 +02:00
070.out
qemu-io: Return non-zero exit code on failure
2017-02-12 00:47:42 +01:00
071
block: Remove "options" indirection from blockdev-add
2016-10-24 17:54:03 +02:00
071.out
shutdown: Expose bool cause in SHUTDOWN and RESET events
2017-05-23 13:28:17 +02:00
072
qemu-iotests: tests: do not set unused tmp variable
2016-04-15 17:56:56 +02:00
072.out
qemu-iotests: Remove traling whitespaces in *.out
2014-12-12 16:52:33 +00:00
073
qemu-iotests: exclude vxhs from image creation via protocol
2017-04-24 15:09:33 -04:00
073.out
opts: produce valid command line in qemu_opts_print
2015-09-11 10:21:38 +03:00
074
qemu-iotests: Remove blkdebug.conf after tests
2017-08-01 18:09:33 +02:00
074.out
qemu-img: Drop redundant error message in compare
2017-10-26 14:45:57 +02:00
075
iotests: fix 075 and 078
2017-11-27 11:25:41 +01:00
075.out
qemu-io: Return non-zero exit code on failure
2017-02-12 00:47:42 +01:00
076
qemu-iotests: tests: do not set unused tmp variable
2016-04-15 17:56:56 +02:00
076.out
qemu-io: Return non-zero exit code on failure
2017-02-12 00:47:42 +01:00
077
iotests: 077: Filter out 'resume' lines
2017-11-14 18:06:25 +01:00
077.out
iotests: 077: Filter out 'resume' lines
2017-11-14 18:06:25 +01:00
078
iotests: fix 075 and 078
2017-11-27 11:25:41 +01:00
078.out
qemu-io: Return non-zero exit code on failure
2017-02-12 00:47:42 +01:00
079
qemu-iotests: tests: do not set unused tmp variable
2016-04-15 17:56:56 +02:00
079.out
opts: produce valid command line in qemu_opts_print
2015-09-11 10:21:38 +03:00
080
qcow2: Make qemu-img check detect corrupted L1 tables in snapshots
2018-03-09 15:17:47 +01:00
080.out
qcow2: Make qemu-img check detect corrupted L1 tables in snapshots
2018-03-09 15:17:47 +01:00
081
block: Remove "options" indirection from blockdev-add
2016-10-24 17:54:03 +02:00
081.out
shutdown: Expose bool cause in SHUTDOWN and RESET events
2017-05-23 13:28:17 +02:00
082
qemu-img: Check for backing image if specified during create
2017-07-18 15:27:37 +02:00
082.out
qemu-img: Check for backing image if specified during create
2017-07-18 15:27:37 +02:00
083
iotests: Make 083 less flaky
2017-11-14 18:06:25 +01:00
083.out
nbd: Minimal structured read for client
2017-10-30 21:48:41 +01:00
084
qemu-iotests: tests: do not set unused tmp variable
2016-04-15 17:56:56 +02:00
084.out
qemu-iotests: Remove traling whitespaces in *.out
2014-12-12 16:52:33 +00:00
085
block: Use JSON null instead of "" to disable backing file
2017-07-24 13:35:11 +02:00
085.out
block: deprecate "encryption=on" in favor of "encrypt.format=aes"
2017-07-11 17:44:55 +02:00
086
qemu-iotests: tests: do not set unused tmp variable
2016-04-15 17:56:56 +02:00
086.out
qemu-iotests: Remove traling whitespaces in *.out
2014-12-12 16:52:33 +00:00
087
iotests: Make 087 pass without AIO enabled
2017-11-17 18:21:31 +01:00
087.out
qcow2: add iotests to cover LUKS encryption support
2017-07-11 17:44:56 +02:00
088
qemu-iotests: tests: do not set unused tmp variable
2016-04-15 17:56:56 +02:00
088.out
qemu-io: Return non-zero exit code on failure
2017-02-12 00:47:42 +01:00
089
block: Handle null backing link
2018-03-19 14:58:36 -05:00
089.out
block: Handle null backing link
2018-03-19 14:58:36 -05:00
090
qemu-iotests: tests: do not set unused tmp variable
2016-04-15 17:56:56 +02:00
090.out
qemu-iotests: Remove traling whitespaces in *.out
2014-12-12 16:52:33 +00:00
091
iotests: 091: Quit QEMU before checking image
2017-05-11 11:08:40 +02:00
091.out
qemu-iotests: Remove traling whitespaces in *.out
2014-12-12 16:52:33 +00:00
092
qemu-iotests: tests: do not set unused tmp variable
2016-04-15 17:56:56 +02:00
092.out
qemu-io: Return non-zero exit code on failure
2017-02-12 00:47:42 +01:00
093
blockdev: Mark BD-{remove,insert}-medium stable
2018-01-23 12:34:42 +01:00
093.out
qemu-iotests: Test I/O limits with removable media
2017-11-13 15:46:26 +00:00
094
qemu-iotests: _cleanup_qemu must be called on exit
2017-04-24 15:09:33 -04:00
094.out
shutdown: Expose bool cause in SHUTDOWN and RESET events
2017-05-23 13:28:17 +02:00
095
iotests: 095: Clean up QEMU before showing image info
2016-06-16 15:20:37 +02:00
095.out
iotests: 095: Filter _img_info output
2016-01-07 21:30:17 +01:00
096
iotests: Mark all tests executable
2018-03-09 15:40:07 +01:00
096.out
throttle: test that snapshots move the throttling configuration
2015-10-16 15:34:29 +02:00
097
iotests: Improve image-clear tests on non-aligned image
2017-04-03 17:11:40 +02:00
097.out
iotests: Improve image-clear tests on non-aligned image
2017-04-03 17:11:40 +02:00
098
qemu-iotests: tests: do not set unused tmp variable
2016-04-15 17:56:56 +02:00
098.out
opts: produce valid command line in qemu_opts_print
2015-09-11 10:21:38 +03:00
099
qemu-iotests: tests: do not set unused tmp variable
2016-04-15 17:56:56 +02:00
099.out
qemu-iotests: Remove traling whitespaces in *.out
2014-12-12 16:52:33 +00:00
101
qemu-iotests: tests: do not set unused tmp variable
2016-04-15 17:56:56 +02:00
101.out
qemu-iotests: add test case 101 for short file I/O
2014-08-22 11:01:12 +02:00
102
qemu-iotests: Fix locking issue in 102
2018-01-23 12:34:42 +01:00
102.out
qemu-iotests: Fix locking issue in 102
2018-01-23 12:34:42 +01:00
103
iotests: Test valid values of l2-cache-entry-size
2018-02-13 17:00:00 +01:00
103.out
iotests: Test valid values of l2-cache-entry-size
2018-02-13 17:00:00 +01:00
104
qemu-iotests: tests: do not set unused tmp variable
2016-04-15 17:56:56 +02:00
104.out
qemu-iotests: Remove traling whitespaces in *.out
2014-12-12 16:52:33 +00:00
105
qemu-iotests: tests: do not set unused tmp variable
2016-04-15 17:56:56 +02:00
105.out
vmdk: Fix integer overflow in offset calculation
2014-10-03 10:30:33 +01:00
106
qemu-img: add --shrink flag for resize
2017-09-26 15:00:32 +02:00
106.out
iotests: Add preallocated resize test for raw
2017-07-11 17:45:02 +02:00
107
qemu-iotests: tests: do not set unused tmp variable
2016-04-15 17:56:56 +02:00
107.out
qemu-iotests: Remove traling whitespaces in *.out
2014-12-12 16:52:33 +00:00
108
qemu-iotests: tests: do not set unused tmp variable
2016-04-15 17:56:56 +02:00
108.out
qemu-iotests: Remove traling whitespaces in *.out
2014-12-12 16:52:33 +00:00
109
qemu-iotests/109: Fix lock race condition
2017-08-08 14:36:59 +02:00
109.out
blockjobs: Expose manual property
2018-03-19 12:01:24 +01:00
110
qemu-iotests: tests: do not set unused tmp variable
2016-04-15 17:56:56 +02:00
110.out
block/qapi: allow best-effort query
2015-12-18 14:36:17 +01:00
111
qemu-iotests: tests: do not set unused tmp variable
2016-04-15 17:56:56 +02:00
111.out
qemu-img: Check for backing image if specified during create
2017-07-18 15:27:37 +02:00
112
qemu-iotests: tests: do not set unused tmp variable
2016-04-15 17:56:56 +02:00
112.out
qcow2: Use visitor for options in qcow2_create()
2018-03-09 15:17:47 +01:00
113
qemu-iotests: tests: do not set unused tmp variable
2016-04-15 17:56:56 +02:00
113.out
iotests: Add test for unsupported image creation
2014-12-10 10:31:20 +01:00
114
qemu-iotests: exclude vxhs from image creation via protocol
2017-04-24 15:09:33 -04:00
114.out
qemu-io: Don't die on second open
2017-07-10 13:18:05 +02:00
115
qemu-iotests: tests: do not set unused tmp variable
2016-04-15 17:56:56 +02:00
115.out
opts: produce valid command line in qemu_opts_print
2015-09-11 10:21:38 +03:00
116
qemu-iotests: tests: do not set unused tmp variable
2016-04-15 17:56:56 +02:00
116.out
qemu-io: Return non-zero exit code on failure
2017-02-12 00:47:42 +01:00
117
qemu-iotests: _cleanup_qemu must be called on exit
2017-04-24 15:09:33 -04:00
117.out
shutdown: Expose bool cause in SHUTDOWN and RESET events
2017-05-23 13:28:17 +02:00
118
blockdev: Mark BD-{remove,insert}-medium stable
2018-01-23 12:34:42 +01:00
118.out
iotests: Add test for change-related QMP commands
2015-11-11 16:25:47 +01:00
119
qemu-iotests: tests: do not set unused tmp variable
2016-04-15 17:56:56 +02:00
119.out
shutdown: Expose bool cause in SHUTDOWN and RESET events
2017-05-23 13:28:17 +02:00
120
iotests: fix remainining tests to work with LUKS
2017-07-11 17:44:59 +02:00
120.out
shutdown: Expose bool cause in SHUTDOWN and RESET events
2017-05-23 13:28:17 +02:00
121
qcow2: Reset free_cluster_index when allocating a new refcount block
2018-03-26 12:16:00 +02:00
121.out
qcow2: Reset free_cluster_index when allocating a new refcount block
2018-03-26 12:16:00 +02:00
122
qemu-iotests: tests: do not set unused tmp variable
2016-04-15 17:56:56 +02:00
122.out
iotests: Improve _filter_qemu_img_map
2017-05-11 14:28:07 +02:00
123
qemu-iotests: tests: do not set unused tmp variable
2016-04-15 17:56:56 +02:00
123.out
iotests: Add test for qemu-img convert to NBD
2015-02-16 15:07:18 +00:00
124
iotests: Mark all tests executable
2018-03-09 15:40:07 +01:00
124.out
iotests: add transactional failure race test
2016-11-14 22:47:34 -05:00
125
iotests: Add cluster_size=64k to 125
2017-10-26 15:01:14 +02:00
125.out
iotests: Add cluster_size=64k to 125
2017-10-26 15:01:14 +02:00
126
iotests: Add test for colon handling
2017-07-11 17:45:00 +02:00
126.out
iotests: Add test for colon handling
2017-07-11 17:45:00 +02:00
127
iotests: Add test for dataplane mirroring
2017-10-26 15:01:13 +02:00
127.out
iotests: Add test for dataplane mirroring
2017-10-26 15:01:13 +02:00
128
qemu-iotests: tests: do not set unused tmp variable
2016-04-15 17:56:56 +02:00
128.out
iotests: add O_DIRECT alignment probing test
2015-03-10 14:02:24 +01:00
129
iotests: Mark all tests executable
2018-03-09 15:40:07 +01:00
129.out
qemu-iotests: Test that "stop" doesn't drain block jobs
2015-04-28 15:36:09 +02:00
130
iotests: Disable some tests for compat=0.10
2018-01-23 12:34:43 +01:00
130.out
qemu-iotests: Filter HMP readline escape characters
2017-04-27 15:39:49 +02:00
131
qemu-iotests: tests: do not set unused tmp variable
2016-04-15 17:56:56 +02:00
131.out
qemu-io: Return non-zero exit code on failure
2017-02-12 00:47:42 +01:00
132
iotests: Mark all tests executable
2018-03-09 15:40:07 +01:00
132.out
qemu-iotests: Add test case for mirror with unmap
2015-07-02 10:06:23 +01:00
133
iotests: Add test for non-string option reopening
2017-11-17 18:21:30 +01:00
133.out
iotests: Add test for non-string option reopening
2017-11-17 18:21:30 +01:00
134
iotests: enable tests 134 and 158 to work with qcow (v1)
2017-07-11 17:44:56 +02:00
134.out
qcow2: convert QCow2 to use QCryptoBlock for encryption
2017-07-11 17:44:56 +02:00
135
qemu-iotests: tests: do not set unused tmp variable
2016-04-15 17:56:56 +02:00
135.out
block: qemu-iotests - add check for multiplication overflow in vpc
2015-07-27 17:19:07 +02:00
136
iotests: Mark all tests executable
2018-03-09 15:40:07 +01:00
136.out
block: Remove bdrv_aio_multiwrite()
2016-05-19 16:45:31 +02:00
137
iotests: Add l2-cache-entry-size to iotest 137
2018-02-13 17:00:00 +01:00
137.out
iotests: Add l2-cache-entry-size to iotest 137
2018-02-13 17:00:00 +01:00
138
qemu-iotests: tests: do not set unused tmp variable
2016-04-15 17:56:56 +02:00
138.out
iotests: Add test for checking large image files
2015-09-14 16:51:37 +02:00
139
iotests: Mark all tests executable
2018-03-09 15:40:07 +01:00
139.out
qemu-iotests/139: Avoid blockdev-add with id
2016-09-23 13:45:36 +02:00
140
nbd-client: Refuse read-only client with BDRV_O_RDWR
2017-11-09 10:10:17 -06:00
140.out
nbd: Fix iotests failure due to changed client error message
2017-07-17 13:57:42 -05:00
141
qemu-iotests/141: Fix image cleanup
2017-08-01 18:09:33 +02:00
141.out
mirror: Use real permissions in mirror/active commit block job
2017-02-28 20:47:46 +01:00
142
tests: Avoid non-portable 'echo -ARG'
2017-07-11 17:45:00 +02:00
142.out
qemu-iotests: Filter HMP readline escape characters
2017-04-27 15:39:49 +02:00
143
qemu-iotests: _cleanup_qemu must be called on exit
2017-04-24 15:09:33 -04:00
143.out
nbd: Fix iotests failure due to changed client error message
2017-07-17 13:57:42 -05:00
144
block: qemu-iotests - add test for snapshot, commit, snapshot bug
2016-02-02 18:07:27 +01:00
144.out
block: deprecate "encryption=on" in favor of "encrypt.format=aes"
2017-07-11 17:44:55 +02:00
145
iotests: fix remainining tests to work with LUKS
2017-07-11 17:44:59 +02:00
145.out
qemu-iotests: Filter HMP readline escape characters
2017-04-27 15:39:49 +02:00
146
block/vpc: add tests for image creation force_size parameter
2016-03-14 16:46:42 +01:00
146.out
block: fix iotest 146 output expectations
2018-03-19 12:01:39 +01:00
147
iotest 147: add cases to test new @name parameter of nbd-server-add
2018-01-26 09:37:21 -06:00
147.out
iotest 147: add cases to test new @name parameter of nbd-server-add
2018-01-26 09:37:21 -06:00
148
iotests: Mark all tests executable
2018-03-09 15:40:07 +01:00
148.out
iotests: Test QUORUM_REPORT_BAD in fifo mode
2016-03-17 16:43:30 +01:00
149
iotests: chown LUKS device before qemu-io launches
2017-07-11 17:45:00 +02:00
149.out
iotests: chown LUKS device before qemu-io launches
2017-07-11 17:45:00 +02:00
150
qemu-iotests: tests: do not set unused tmp variable
2016-04-15 17:56:56 +02:00
150.out
iotests: Make 150 use qemu-img map instead of du
2016-04-12 18:06:51 +02:00
152
iotests: Mark all tests executable
2018-03-09 15:40:07 +01:00
152.out
iotests: Test case for drive-mirror with unaligned image size
2016-04-20 16:52:55 +02:00
153
iotests: Add regression test for commit base locking
2018-03-19 12:01:39 +01:00
153.out
iotests: Add regression test for commit base locking
2018-03-19 12:01:39 +01:00
154
block: Exploit BDRV_BLOCK_EOF for larger zero blocks
2017-06-30 21:48:06 +08:00
154.out
block: Exploit BDRV_BLOCK_EOF for larger zero blocks
2017-06-30 21:48:06 +08:00
155
iotests: Use virtio-blk in 155
2018-02-13 12:27:17 +01:00
155.out
iotests: Add test for post-mirror backing chains
2016-06-16 15:20:37 +02:00
156
iotests: Fix test 156
2017-08-01 18:09:33 +02:00
156.out
shutdown: Expose bool cause in SHUTDOWN and RESET events
2017-05-23 13:28:17 +02:00
157
iotests: fix remainining tests to work with LUKS
2017-07-11 17:44:59 +02:00
157.out
iotests: fix remainining tests to work with LUKS
2017-07-11 17:44:59 +02:00
158
qemu-img: Check for backing image if specified during create
2017-07-18 15:27:37 +02:00
158.out
qcow2: convert QCow2 to use QCryptoBlock for encryption
2017-07-11 17:44:56 +02:00
159
iotests: skip 159 & 170 with luks format
2017-07-11 17:44:59 +02:00
159.out
qemu-img: add the 'dd' subcommand
2016-09-20 22:10:57 +02:00
160
qemu-img: add skip option to dd
2016-09-20 22:10:57 +02:00
160.out
qemu-img: add skip option to dd
2016-09-20 22:10:57 +02:00
162
qemu-iotests/162: Fix leaked temporary files
2017-08-01 18:09:33 +02:00
162.out
iotests: Do not rely on unavailable domains in 162
2016-10-24 17:54:03 +02:00
163
iotests: Mark all tests executable
2018-03-09 15:40:07 +01:00
163.out
qemu-iotests: add shrinking image test
2017-09-26 15:00:32 +02:00
165
block: maintain persistent disabled bitmaps
2018-02-13 16:59:58 +01:00
165.out
iotests: test qcow2 persistent dirty bitmap
2017-07-11 17:44:59 +02:00
169
iotests: add dirty bitmap migration test
2018-03-13 17:06:26 -04:00
169.out
iotests: add dirty bitmap migration test
2018-03-13 17:06:26 -04:00
170
iotests: skip 159 & 170 with luks format
2017-07-11 17:44:59 +02:00
170.out
qemu-img: add the 'dd' subcommand
2016-09-20 22:10:57 +02:00
171
tests: Avoid non-portable 'echo -ARG'
2017-07-11 17:45:00 +02:00
171.out
qemu-iotests: test 'offset' and 'size' options in raw driver
2016-10-31 16:52:39 +01:00
172
qemu-iotests: Add missing -machine accel=qtest
2017-09-26 14:46:23 +02:00
172.out
hw/block/fdc: Convert to realize
2017-09-18 19:43:38 -04:00
173
qemu-iotest: test to lookup protocol-based image with relative backing
2017-02-12 00:47:42 +01:00
173.out
qemu-iotest: test to lookup protocol-based image with relative backing
2017-02-12 00:47:42 +01:00
174
iotests: fix remainining tests to work with LUKS
2017-07-11 17:44:59 +02:00
174.out
qemu-io: Add failure regression tests
2017-02-12 00:47:42 +01:00
175
qemu-img: Add tests for raw image preallocation
2017-02-24 16:09:22 +01:00
175.out
qemu-img: Add tests for raw image preallocation
2017-02-24 16:09:22 +01:00
176
block: maintain persistent disabled bitmaps
2018-02-13 16:59:58 +01:00
176.out
iotests: Fix 176 on 32-bit host
2017-11-21 14:54:02 +01:00
177
iotests: Split 177 into two parts for compat=0.10
2018-01-23 12:34:43 +01:00
177.out
iotests: Split 177 into two parts for compat=0.10
2018-01-23 12:34:43 +01:00
178
iotests: add test 178 for qemu-img measure
2017-07-11 17:45:01 +02:00
178.out.qcow2
iotests: add test 178 for qemu-img measure
2017-07-11 17:45:01 +02:00
178.out.raw
iotests: add test 178 for qemu-img measure
2017-07-11 17:45:01 +02:00
179
qemu-iotests: Remove blkdebug.conf after tests
2017-08-01 18:09:33 +02:00
179.out
iotests: Add test 179 to cover write zeroes with unmap
2017-05-11 14:28:07 +02:00
181
qemu-iotests: Enable write tests for parallels
2018-03-19 12:01:39 +01:00
181.out
iotests: fix 181: enable postcopy-ram capability on target
2017-09-26 14:46:23 +02:00
182
qemu-iotests: Use -nographic in 182
2017-11-17 13:35:59 +01:00
182.out
tests: Add POSIX image locking test case 182
2017-05-11 12:08:20 +02:00
183
qemu-iotests: Block migration test
2017-06-09 11:45:03 +02:00
183.out
qemu-iotests: Block migration test
2017-06-09 11:45:03 +02:00
184
iotests: Make 184 image-less
2018-01-23 12:34:43 +01:00
184.out
iotests: Make 184 image-less
2018-01-23 12:34:43 +01:00
185
qemu-iotests: fix 185
2017-08-11 14:44:39 +02:00
185.out
block: deprecate "encryption=on" in favor of "encrypt.format=aes"
2017-07-11 17:44:55 +02:00
186
qemu-iotests: Add missing -machine accel=qtest
2017-09-26 14:46:23 +02:00
186.out
iotests: Redirect stderr to stdout in 186
2017-08-01 18:09:33 +02:00
187
qemu-iotests: Test reopen between read-only and read-write
2017-08-08 15:19:16 +02:00
187.out
qemu-io: Drop write permissions before read-only reopen
2017-09-26 14:46:23 +02:00
188
qcow2: add iotests to cover LUKS encryption support
2017-07-11 17:44:56 +02:00
188.out
qcow2: add iotests to cover LUKS encryption support
2017-07-11 17:44:56 +02:00
189
qemu-img: Check for backing image if specified during create
2017-07-18 15:27:37 +02:00
189.out
qcow2: add iotests to cover LUKS encryption support
2017-07-11 17:44:56 +02:00
190
iotests: Add test of recent fix to 'qemu-img measure'
2017-08-01 18:09:33 +02:00
190.out
iotests: Add test of recent fix to 'qemu-img measure'
2017-08-01 18:09:33 +02:00
191
iotests: Make 191 work with qcow2 options
2018-01-23 12:34:43 +01:00
191.out
iotests: Make 191 work with qcow2 options
2018-01-23 12:34:43 +01:00
192
iotests: rewrite 192 to use _launch_qemu to fix LUKS support
2017-09-05 14:17:26 -05:00
192.out
iotests: Add non-shared storage migration case 192
2017-08-15 10:03:28 -05:00
194
qemu-iotests: update unsupported image formats in 194
2017-11-14 18:06:26 +01:00
194.out
qemu-iotests: Extend non-shared storage migration test (194)
2017-08-30 13:00:37 -05:00
195
iotests: Fix 195 if IMGFMT is part of TEST_DIR
2017-10-06 16:30:47 +02:00
195.out
qemu-iotests: Test change-backing-file command
2017-09-26 14:46:23 +02:00
196
iotests: test clearing unknown autoclear_features by qcow2
2017-11-17 18:06:21 +01:00
196.out
iotests: test clearing unknown autoclear_features by qcow2
2017-11-17 18:06:21 +01:00
197
iotests: fix 197 for vpc
2017-12-22 15:03:41 +01:00
197.out
iotests: Add test 197 for covering copy-on-read
2017-10-06 16:28:58 +02:00
198
iotests: Filter compat-dependent info in 198
2018-01-23 12:34:43 +01:00
198.out
iotests: Filter compat-dependent info in 198
2018-01-23 12:34:43 +01:00
199
iotests: add dirty bitmap postcopy test
2018-03-13 17:06:32 -04:00
199.out
iotests: add dirty bitmap postcopy test
2018-03-13 17:06:32 -04:00
200
iotests: Make 200 run on tmpfs
2018-01-31 22:37:00 -05:00
200.out
qemu-iotest: add test for blockjob coroutine race condition
2017-11-21 11:58:12 -05:00
201
tests/qemu-iotests: adding savevm/loadvm with postcopy flag test
2018-01-23 12:33:07 +01:00
201.out
tests/qemu-iotests: adding savevm/loadvm with postcopy flag test
2018-01-23 12:33:07 +01:00
202
qemu-iotests: add 202 external snapshots IOThread test
2017-12-19 10:25:09 +00:00
202.out
qemu-iotests: add 202 external snapshots IOThread test
2017-12-19 10:25:09 +00:00
203
qemu-iotests: fix 203 migration completion race
2018-03-09 15:40:07 +01:00
203.out
qemu-iotests: fix 203 migration completion race
2018-03-09 15:40:07 +01:00
204
iotests: Split 177 into two parts for compat=0.10
2018-01-23 12:34:43 +01:00
204.out
iotests: Split 177 into two parts for compat=0.10
2018-01-23 12:34:43 +01:00
205
iotests: Mark all tests executable
2018-03-09 15:40:07 +01:00
205.out
iotest 205: new test for qmp nbd-server-remove
2018-01-26 09:37:21 -06:00
206
qemu-iotests: Test qcow2 over file image creation with QMP
2018-03-09 15:17:48 +01:00
206.out
qemu-iotests: Test qcow2 over file image creation with QMP
2018-03-09 15:17:48 +01:00
207
qemu-iotests: Test ssh image creation over QMP
2018-03-09 15:17:48 +01:00
207.out
qemu-iotests: Test ssh image creation over QMP
2018-03-09 15:17:48 +01:00
208
iotests: add 208 nbd-server + blockdev-snapshot-sync test case
2018-03-13 15:38:55 -05:00
208.out
iotests: add 208 nbd-server + blockdev-snapshot-sync test case
2018-03-13 15:38:55 -05:00
209
iotests: new test 209 for NBD BLOCK_STATUS
2018-03-13 15:44:09 -05:00
209.out
iotests: new test 209 for NBD BLOCK_STATUS
2018-03-13 15:44:09 -05:00
210
qemu-iotests: Test luks QMP image creation
2018-03-19 12:01:39 +01:00
210.out
qemu-iotests: Test luks QMP image creation
2018-03-19 12:01:39 +01:00
check
iotests: Avoid realpath, for CentOS 6
2018-03-19 12:01:39 +01:00
common.config
qemu-iotests: disintegrate more parts of common.config
2017-10-06 16:28:58 +02:00
common.filter
iotests: Drop format-specific in _filter_img_info
2018-01-23 12:34:43 +01:00
common.pattern
qemu-io: Switch 'alloc' command to byte-based length
2017-05-11 14:28:05 +02:00
common.qemu
qemu-iotests: add option in common.qemu for mismatch only
2017-11-21 11:58:12 -05:00
common.rc
qemu-iotests: Test luks QMP image creation
2018-03-19 12:01:39 +01:00
COPYING
qemu-iotests: Initial import into the public repository.
2012-02-22 16:15:22 +01:00
group
iotests: 163 is not quick
2018-03-26 12:16:00 +02:00
iotests.py
iotests: add pause_wait
2018-03-19 12:01:24 +01:00
Makefile
iotests: record separate timings per format,protocol pair
2017-02-12 00:47:42 +01:00
nbd-fault-injector.py
nbd: rename some simple-request related objects to be _simple_
2017-10-12 16:27:34 -05:00
qcow2.py
qcow2.py: Add required padding for header extensions
2014-12-10 10:31:13 +01:00
qed.py
tests: Use Python 2.6 "except E as ..." syntax
2016-02-08 17:29:54 +01:00
README
doc: Fix mailing list address in tests/qemu-iotests/README
2016-06-16 15:19:55 +02:00
socket_scm_helper.c
socket_scm_helper: Accept fd directly
2016-10-27 19:05:23 +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@nongnu.org with a CC:
to qemu-block@nongnu.org.