Commit Graph

888 Commits

Author SHA1 Message Date
Vladimir Sementsov-Ogievskiy
ab01df1fe2 nbd/client: refactor nbd_read_eof
Refactor nbd_read_eof to return 1 on success, 0 on eof, when no
data was read and <0 for other cases, because returned size of
read data is not actually used.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20170804151440.320927-3-vsementsov@virtuozzo.com>
[eblake: tweak function comments, rebase to test 083 enhancements]
Signed-off-by: Eric Blake <eblake@redhat.com>
2017-08-30 13:00:38 -05:00
Stefan Hajnoczi
02d2d860d2 qemu-iotests: test NBD over UNIX domain sockets in 083
083 only tests TCP.  Some failures might be specific to UNIX domain
sockets.

A few adjustments are necessary:

1. Generating a port number and waiting for server startup is
   TCP-specific.  Use the new nbd-fault-injector.py startup protocol to
   fetch the address.  This is a little more elegant because we don't
   need netstat anymore.

2. The NBD filter does not work for the UNIX domain sockets URIs we
   generate and must be extended.

3. Run all tests twice: once for TCP and once for UNIX domain sockets.

Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-Id: <20170829122745.14309-4-stefanha@redhat.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
2017-08-30 13:00:38 -05:00
Stefan Hajnoczi
6e592fc922 qemu-iotests: improve nbd-fault-injector.py startup protocol
Currently 083 waits for the nbd-fault-injector.py server to start up by
looping until netstat shows the TCP listen socket.

The startup protocol can be simplified by passing a 0 port number to
nbd-fault-injector.py.  The kernel will allocate a port in bind(2) and
the final port number can be printed by nbd-fault-injector.py.

This should make it slightly nicer and less TCP-specific to wait for
server startup.  This patch changes nbd-fault-injector.py, the next one
will rewrite server startup in 083.

Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-Id: <20170829122745.14309-3-stefanha@redhat.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
2017-08-30 13:00:37 -05:00
Kashyap Chamarthy
2c94e2714c qemu-iotests: Extend non-shared storage migration test (194)
This is the follow-up patch that was discussed[*] as part of feedback to
qemu-iotest 194.

Changes in this patch:

  - Supply 'job-id' parameter to `drive-mirror` invocation.

  - Once migration completes, issue QMP `block-job-cancel` command on
    the source QEMU to gracefully complete `drive-mirror` operation.

  - Once the BLOCK_JOB_COMPLETED event is emitted, stop the NBD server
    on the destination QEMU.

  - Check for both the events: MIGRATION and BLOCK_JOB_COMPLETED.

With the above, the test will also be (almost) in sync with the
procedure outlined in the document 'live-block-operations.rst'[+]
(section: "QMP invocation for live storage migration with
``drive-mirror`` + NBD").

[*] https://lists.nongnu.org/archive/html/qemu-devel/2017-08/msg04820.html
    -- qemu-iotests: add 194 non-shared storage migration test
[+] https://git.qemu.org/gitweb.cgi?p=qemu.git;a=blob;f=docs/interop/live-block-operations.rst

Signed-off-by: Kashyap Chamarthy <kchamart@redhat.com>
Message-Id: <20170829165058.8229-1-kchamart@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
2017-08-30 13:00:37 -05:00
Stefan Hajnoczi
12314f2d14 qemu-iotests: add 194 non-shared storage migration test
Non-shared storage migration with NBD and drive-mirror is currently not
tested by qemu-iotests.  This test case covers the basic migration
scenario.

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Based-on: <20170823134242.12080-1-famz@redhat.com>
Message-Id: <20170823140506.28723-1-stefanha@redhat.com>
Tested-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
2017-08-23 10:21:55 -05:00
Fam Zheng
dd7fdaad65 iotests: Add non-shared storage migration case 192
Signed-off-by: Fam Zheng <famz@redhat.com>
Message-Id: <20170815130740.31229-5-famz@redhat.com>
Tested-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
2017-08-15 10:03:28 -05:00
Stefan Hajnoczi
cbaddb25b2 qemu-iotests: step clock after each test iteration
The 093 throttling test submits twice as many requests as the throttle
limit in order to ensure that we reach the limit.  The remaining
requests are left in-flight at the end of each test iteration.

Commit 452589b6b4 ("vl.c/exit: pause cpus
before closing block devices") exposed a hang in 093.  This happens
because requests are still in flight when QEMU terminates but
QEMU_CLOCK_VIRTUAL time is frozen.  bdrv_drain_all() hangs forever since
throttled requests cannot complete.

Step the clock at the end of each test iteration so in-flight requests
actually finish.  This solves the hang and is cleaner than leaving tests
in-flight.

Note that this could also be "fixed" by disabling throttling when drives
are closed in QEMU.  That approach has two issues:

1. We must drain requests before disabling throttling, so the hang
   cannot be easily avoided!

2. Any time QEMU disables throttling internally there is a chance that
   malicious users can abuse the code path to bypass throttling limits.

Therefore it makes more sense to fix the test case than to modify QEMU.

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-Id: <20170815130502.8736-1-stefanha@redhat.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
2017-08-15 10:03:27 -05:00
Cleber Rosa
a3e08c2dbd qemu-iotests: remove comment about root privileges requirement
The check script contains a commented out root user requirement,
probably because of its xfstests heritage.  This requirement doesn't
apply to qemu-iotests, so it better be gone.

Signed-off-by: Cleber Rosa <crosa@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2017-08-14 13:06:54 +03:00
Cleber Rosa
80758ec57d qemu-iotests: remove commented out variables
The variables FULL_MKFS_OPTIONS and FULL_MOUNT_OPTIONS are commented
out, never used, and even refer to functions that do exist.  The last
time these were touched was around 8 years ago, so I guess it's safe
to assume outputting such information on test execution is still on the
radar.

Signed-off-by: Cleber Rosa <crosa@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2017-08-14 13:06:54 +03:00
Cleber Rosa
657c572afe qemu-iotests: get rid of _full_imgproto_details()
Although this function is used, its implementation does nothing
besides echoing a variable name.  There's no need to wrap this
functionality in a function, and based on the one usage it has, it's
not even required to adhere to a convention or code style.

Signed-off-by: Cleber Rosa <crosa@redhat.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2017-08-14 13:06:54 +03:00
Vladimir Sementsov-Ogievskiy
8565c3ab53 qemu-iotests: fix 185
185 can sometimes produce wrong output like this:

    185 2s ... - output mismatch (see 185.out.bad)
    --- /work/src/qemu/master/tests/qemu-iotests/185.out    2017-07-14 \
        15:14:29.520343805 +0300
    +++ 185.out.bad 2017-08-07 16:51:02.231922900 +0300
    @@ -37,7 +37,7 @@
     {"return": {}}
     {"return": {}}
     {"timestamp": {"seconds":  TIMESTAMP, "microseconds":  TIMESTAMP}, \
         "event": "SHUTDOWN", "data": {"guest": false}}
    -{"timestamp": {"seconds":  TIMESTAMP, "microseconds":  TIMESTAMP}, \
        "event": "BLOCK_JOB_CANCELLED", "data": {"device": "disk", \
            "len": 4194304, "offset": 4194304, "speed": 65536, "type": \
                "mirror"}}
    +{"timestamp": {"seconds":  TIMESTAMP, "microseconds":  TIMESTAMP}, \
        "event": "BLOCK_JOB_CANCELLED", "data": {"device": "disk", \
            "len": 0, "offset": 0, "speed": 65536, "type": "mirror"}}

     === Start backup job and exit qemu ===

    Failures: 185
    Failed 1 of 1 tests

This is because, under heavy load, the quit can happen before the first
iteration of the mirror request has occurred.  To make sure we've had
time to iterate, let's just add a sleep for 0.5 seconds before quitting.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2017-08-11 14:44:39 +02:00
Kevin Wolf
ea22b7a220 qemu-iotests: Test reopen between read-only and read-write
This serves as a regression test for the bugs that were just fixed for
bdrv_reopen() between read-only and read-write mode.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Jeff Cody <jcody@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
2017-08-08 15:19:16 +02:00
Kevin Wolf
809eb70ed6 block/null: Remove 'filename' option
This option was only added to allow 'null-co://' and 'null-aio://' as
filenames, its value never served any actual purpose and was ignored.
Nevertheless it was accepted as '-drive driver=null,filename=foo'.

The correct way to enable the protocol prefixes (and that without adding
a useless -drive option) is implementing .bdrv_parse_filename. This is
what this patch does.

Technically, this is an incompatible change, but the null block driver
is only used for benchmarking, testing and debugging, and an option
without effect isn't likely to be used by anyone anyway, so no bad
effects are to be expected.

Reported-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Jeff Cody <jcody@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
2017-08-08 15:19:16 +02:00
Cleber Rosa
53dd4015ac qemu-iotests/109: Fix lock race condition
A race condition is currently present between the clean up attempt of
the QEMU process and the execution of qemu-img.  The actual (bad)
output is:

 -Warning: Image size mismatch!
 -Images are identical.
 +qemu-img: Could not open '<build_dir>/tests/qemu-iotests/scratch/t.raw': Failed to get "consistent read" lock
 +Is another process using the image?

A KILL signal is sent to the QEMU process, but qemu-img may begin to
run before the QEMU process is really gone.  qemu-img will then
attempt to open the TEST_IMG file before it can secure a lock on it.

This attempts a more graceful shutdown, and waits for the QEMU process
to exit.

Signed-off-by: Cleber Rosa <crosa@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Jeff Cody <jcody@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2017-08-08 14:36:59 +02:00
Kevin Wolf
59fa68f3f3 qemu-iotests/059: Fix leaked image files
qemu-iotests 059 left a whole lot of image files behind in the scratch
directory because VMDK creates additional files for extents and cleaning
them up requires the original image intact (it parses qemu-img info
output to find all extent files), but the image overwrote it many times
like it works for all other image formats.

In addition, _use_sample_img overwrites the TEST_IMG variable, causing
new images created afterwards to reuse the name of the sample file
rather than the usual t.IMGFMT.

This patch adds an intermediate _cleanup_test_img after each subtest
that created an image file with additional extent files, and also after
each use of a sample image. _cleanup_test_img is also changed so that it
resets TEST_IMG after a sample image is cleaned up.

Note that this test was failing before this commit and continues to do
so after it. This failure was introduced in commit 9877860 ('block/vmdk:
Report failures in vmdk_read_cid()') and needs to be dealt with
separately.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Jeff Cody <jcody@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
2017-08-01 18:09:33 +02:00
Kevin Wolf
1803f3f6cf qemu-iotests/063: Fix leaked image
qemu-iotests 063 left t.raw.raw1 behind in the scratch directory because
it used the wrong suffix. Make sure to clean it up after completing the
test.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Jeff Cody <jcody@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
2017-08-01 18:09:33 +02:00
Kevin Wolf
a8e9c8480e qemu-iotests/162: Fix leaked temporary files
qemu-iotests 162 left qemu-nbd.pid behind in the scratch directory, and
potentially a file called '42' in the current directory. Make sure to
clean it up after completing the tests.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Jeff Cody <jcody@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
2017-08-01 18:09:33 +02:00
Kevin Wolf
6a1e909620 qemu-iotests/153: Fix leaked scratch images
qemu-iotests 153 left t.qcow2.c behind in the scratch directory. Make
sure to clean it up after completing the tests.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Jeff Cody <jcody@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
2017-08-01 18:09:33 +02:00
Kevin Wolf
0a1505d56a qemu-iotests/141: Fix image cleanup
qemu-iotests 141 attempted to use brace expansion to remove all images
with a single command. However, for this to work, the braces shouldn't
be quoted.

With this fix, the tests correctly cleans up its scratch images.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Jeff Cody <jcody@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
2017-08-01 18:09:33 +02:00
Kevin Wolf
0e5960761d qemu-iotests: Remove blkdebug.conf after tests
qemu-iotests 074 and 179 left a blkdebug.conf behind in the scratch
directory. Make sure to clean up after completing the tests.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Jeff Cody <jcody@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
2017-08-01 18:09:33 +02:00
Kevin Wolf
db11d1ee85 qemu-iotests/041: Fix leaked scratch images
qemu-iotests 041 left quorum_snapshot.img and target.img behind in the
scratch directory. Make sure to clean up after completing the tests.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Jeff Cody <jcody@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
2017-08-01 18:09:33 +02:00
Eric Blake
b81b74bfb2 iotests: Add test of recent fix to 'qemu-img measure'
The new test 190 ensures we don't regress back to an infinite loop when
measuring the size of a 2T+ qcow2 image.  I did not append to test 178,
because that test is also designed to run with format 'raw'; also, this
gives us some coverage of the measure command under the quick group.

Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2017-08-01 18:09:33 +02:00
Eric Blake
1e2b1f6487 iotests: Check dirty bitmap statistics in 124
We had a bug for multiple releases where dirty-bitmap count was
documented in bytes but reported in sectors; enhance the testsuite
to add coverage of DirtyBitmapInfo to ensure we do not regress again.

Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2017-08-01 18:09:33 +02:00
Max Reitz
c09bd34d82 iotests: Redirect stderr to stdout in 186
Without redirecting qemu's stderr to stdout, _filter_qemu will not apply
to warnings.  This results in $QEMU_PROG not being replaced by QEMU_PROG
which is not great if your qemu executable is not called
qemu-system-x86_64 (e.g. qemu-system-i386).

Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Jeff Cody <jcody@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2017-08-01 18:09:33 +02:00
Max Reitz
645acdc0e6 iotests: Fix test 156
On one hand, the _make_test_img invocation for creating the target image
was missing a -u because its backing file is not supposed to exist at
that point.

On the other hand, nobody noticed probably because the backing file is
created later on and _cleanup failed to remove it: The quotation marks
were misplaced so bash tried to delete a file literally called
"$TEST_IMG{,.target}..." instead of performing brace expansion. Thus, the
files stayed around after the first run and qemu-img create did not
complain about a missing backing file on any run but the first.

Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Jeff Cody <jcody@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2017-08-01 18:09:33 +02:00
Kevin Wolf
bd998d7cc8 qemu-iotests: Fix reference output for 186
Commits 70f17a1 ('error: Revert unwanted change of warning messages')
and e1824e5 ('qemu-iotests: Test 'info block'') had a semantic merge
conflict, which results in failure for qemu-iotests case 186. Fix the
reference output to consider the changes of 70f17a1.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-id: 1500973176-29235-1-git-send-email-kwolf@redhat.com
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>
2017-07-25 16:33:58 +02:00
Peter Maydell
50104f5ac5 Block layer patches for 2.10.0-rc0
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Merge remote-tracking branch 'remotes/kevin/tags/for-upstream' into staging

Block layer patches for 2.10.0-rc0

# gpg: Signature made Mon 24 Jul 2017 15:16:42 BST
# gpg:                using RSA key 0x7F09B272C88F2FD6
# gpg: Good signature from "Kevin Wolf <kwolf@redhat.com>"
# Primary key fingerprint: DC3D EB15 9A9A F95D 3D74  56FE 7F09 B272 C88F 2FD6

* remotes/kevin/tags/for-upstream:
  qemu-iotests: Avoid unnecessary sleeps
  block: Skip implicit nodes in query-block/blockstats
  qcow2: Fix sector calculation in qcow2_measure()
  dirty-bitmap: Report BlockDirtyInfo.count in bytes, as documented
  iotests: Remove a few tests from 'quick' group

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2017-07-24 16:58:16 +01:00
Kevin Wolf
2c93c5cb43 qemu-iotests: Avoid unnecessary sleeps
Test cases 030, 041 and 055 used to sleep for a second after calling
block-job-pause to make sure that the block job had time to actually
get into paused state. We can instead poll its status and use that one
second only as a timeout.

The tests also slept a second for checking that the block jobs don't
make progress while being paused. Half a second is more than enough for
this.

These changes reduce the total time for the three tests by 25 seconds on
my laptop (from 155 seconds to 130).

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
2017-07-24 15:06:04 +02:00
Kevin Wolf
d3c8c67469 block: Skip implicit nodes in query-block/blockstats
Commits 0db832f and 6cdbceb introduced the automatic insertion of filter
nodes above the top layer of mirror and commit block jobs. The
assumption made there was that since libvirt doesn't do node-level
management of the block layer yet, it shouldn't be affected by added
nodes.

This is true as far as commands issued by libvirt are concerned. It only
uses BlockBackend names to address nodes, so any operations it performs
still operate on the root of the tree as intended.

However, the assumption breaks down when you consider query commands,
which return data for the wrong node now. These commands also return
information on some child nodes (bs->file and/or bs->backing), which
libvirt does make use of, and which refer to the wrong nodes, too.

One of the consequences is that oVirt gets wrong information about the
image size and stops the VM in response as long as a mirror or commit
job is running:

https://bugzilla.redhat.com/show_bug.cgi?id=1470634

This patch fixes the problem by hiding the implicit nodes created
automatically by the mirror and commit block jobs in the output of
query-block and BlockBackend-based query-blockstats as long as the user
doesn't indicate that they are aware of those nodes by providing a node
name for them in the QMP command to start the block job.

The node-based commands query-named-block-nodes and query-blockstats
with query-nodes=true still show all nodes, including implicit ones.
This ensures that users that are capable of node-level management can
still access the full information; users that only know BlockBackends
won't use these commands.

Cc: qemu-stable@nongnu.org
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Tested-by: Eric Blake <eblake@redhat.com>
2017-07-24 15:06:04 +02:00
Eric Blake
88e1f92745 iotests: Remove a few tests from 'quick' group
A run of './check -qcow2 -g quick' on my machine produced only
two tests that took longer than 5 seconds; 178 took 18, and
189 took 7.  Remove them from the quick group.

Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Reviewed-by: Jeff Cody <jcody@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2017-07-24 15:06:04 +02:00
Markus Armbruster
c42e8742f5 block: Use JSON null instead of "" to disable backing file
BlockdevRef is an alternate of BlockdevOptions (inline definition) and
str (reference to an existing block device by name).  BlockdevRef
value "" is special: "no block device should be referenced."  It's
actually interpreted that way in just one place: optional member
@backing of COW formats.  Semantics:

* Present means "use this block device" as backing storage

* Absent means "default to the one stored in the image"

* Except "" means "don't use backing storage at all"

The first two are perfectly normal: when the parameter is absent, it
defaults to an implied value, but the value's meaning is the same.

The third one overloads the parameter with a second meaning.  The
overloading is *implicit*, i.e. it's not visible in the types.  Works
here, because "" is not a value block device ID.

Pressing argument values the schema accepts, but are semantically
invalid, into service to mean "do something else entirely" is not
general, as suitable invalid values need not exist.  I also find it
ugly.

To clean this up, we could add a separate flag argument to suppress
@backing, or add a distinct value to @backing.  This commit implements
the latter: add JSON null to the values of @backing, deprecate "".

Because we're so close to the 2.10 freeze, implement it in the
stupidest way possible: have qmp_blockdev_add() rewrite null to ""
before anything else can see the null.  Works, because BlockdevRef
occurs only within arguments of blockdev-add.  The proper way to do it
would be rewriting "" to null, preferably in a cleaner way, but that
requires fixing up code to work with null.  Add a TODO comment for
that.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Daniel P. Berrange <berrange@redhat.com>
Acked-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
2017-07-24 13:35:11 +02:00
Peter Maydell
f1a46e8885 Block layer patches
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Merge remote-tracking branch 'remotes/kevin/tags/for-upstream' into staging

Block layer patches

# gpg: Signature made Tue 18 Jul 2017 14:29:59 BST
# gpg:                using RSA key 0x7F09B272C88F2FD6
# gpg: Good signature from "Kevin Wolf <kwolf@redhat.com>"
# Primary key fingerprint: DC3D EB15 9A9A F95D 3D74  56FE 7F09 B272 C88F 2FD6

* remotes/kevin/tags/for-upstream: (21 commits)
  qemu-img: Check for backing image if specified during create
  blockdev: move BDRV_O_NO_BACKING option forward
  block/vvfat: Fix compiler warning with gcc 7
  vvfat: initialize memory after allocating it
  vvfat: correctly parse non-ASCII short and long file names
  vvfat: add a constant for bootsector name
  vvfat: add constants for special values of name[0]
  qemu-iotests: Test unplug of -device without drive
  qemu-iotests: Test 'info block'
  scsi-disk: bdrv_attach_dev() for empty CD-ROM
  ide: bdrv_attach_dev() for empty CD-ROM
  block: List anonymous device BBs in query-block
  block/qapi: Use blk_all_next() for query-block
  block: Make blk_all_next() public
  block/qapi: Add qdev device name to query-block
  block: Make blk_get_attached_dev_id() public
  block/vpc.c: Handle write failures in get_image_offset()
  block/vmdk: Report failures in vmdk_read_cid()
  block: remove timer canceling in throttle_config()
  block: add clock_type field to ThrottleGroup
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2017-07-19 10:48:31 +01:00
John Snow
6e6e55f5c2 qemu-img: Check for backing image if specified during create
Or, rather, force the open of a backing image if one was specified
for creation. Using a similar -unsafe option as rebase, allow qemu-img
to ignore the backing file validation if possible.

It may not always be possible, as in the existing case when a filesize
for the new image was not specified.

This is accomplished by shifting around the conditionals in
bdrv_img_create, such that a backing file is always opened unless we
provide BDRV_O_NO_BACKING. qemu-img is adjusted to pass this new flag
when -u is provided to create.

Sorry for the heinous looking diffstat, but it's mostly whitespace.

Inspired by: https://bugzilla.redhat.com/show_bug.cgi?id=1213786

Signed-off-by: John Snow <jsnow@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2017-07-18 15:27:37 +02:00
Kevin Wolf
208c38e4e4 qemu-iotests: Test unplug of -device without drive
This caused an assertion failure until recently because the BlockBackend
would be detached on unplug, but was in fact never attached in the first
place. Add a regression test.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
2017-07-18 15:14:36 +02:00
Kevin Wolf
e1824e585f qemu-iotests: Test 'info block'
This test makes sure that all block devices show up on 'info block',
with all of the expected information, in different configurations.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
2017-07-18 15:14:36 +02:00
Kevin Wolf
46eade7be8 block/qapi: Add qdev device name to query-block
With -blockdev/-device, users can indirectly create anonymous
BlockBackends, while the state of such backends is still of interest. As
a preparation for making such BBs visible in query-block, make sure that
they can be identified even without a name by adding the ID/QOM path of
their qdev device to BlockInfo.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
2017-07-18 15:14:35 +02:00
Eric Blake
9a76bd783d nbd: Fix iotests failure due to changed client error message
Commit 8ecaeae8 changed the way the client requests an NBD export,
and in the process also changed the resulting error message when
the export is not present, breaking a couple of iotests.  The error
message is now directly given by the server (a failed NBD_OPT_GO)
instead of implied by the client (after exhausting NBD_OPT_LIST),
but looking at the testsuite changes, it proves worthwhile to
reword the error message to be slightly less verbose (as this is
one particular error message likely to be hit by a user).

Note that the error message is now sensitive to which binary is
running the server as well as the client (since the expected
output is replaying a message received from the server - for that
matter, it depends on a server new enough to understand NBD_OPT_GO);
in general iotests are run on client and server from the same source
code base so the default setup will pass; but if it proves
problematic for people overriding QEMU_PROG, QEMU_IMG_PROG,
QEMU_IO_PROG, and QEMU_NBD_PROG to point across multiple builds for
cross-version integration testing, we may have to later tweak or
sanitize the output somehow.

Reported-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
Message-Id: <20170717142310.17048-1-eblake@redhat.com>
Tested-by: John Snow <jsnow@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
2017-07-17 13:57:42 -05:00
Max Reitz
ced1484322 iotests: Add preallocated growth test for qcow2
Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 20170613202107.10125-17-mreitz@redhat.com
Signed-off-by: Max Reitz <mreitz@redhat.com>
2017-07-11 17:45:02 +02:00
Max Reitz
a2c7e08212 iotests: Add preallocated resize test for raw
Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 20170613202107.10125-16-mreitz@redhat.com
Signed-off-by: Max Reitz <mreitz@redhat.com>
2017-07-11 17:45:02 +02:00
Max Reitz
12cc30a8cb block/qcow2: Add qcow2_refcount_area()
This function creates a collection of self-describing refcount
structures (including a new refcount table) at the end of a qcow2 image
file. Optionally, these structures can also describe a number of
additional clusters beyond themselves; this will be important for
preallocated truncation, which will place the data clusters and L2
tables there.

For now, we can use this function to replace the part of
alloc_refcount_block() that grows the refcount table (from which it is
actually derived).

Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 20170613202107.10125-13-mreitz@redhat.com
Signed-off-by: Max Reitz <mreitz@redhat.com>
2017-07-11 17:45:02 +02:00
Stefan Hajnoczi
32a1681adc iotests: add test 178 for qemu-img measure
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Alberto Garcia <berto@igalia.com>
Message-id: 20170705125738.8777-10-stefanha@redhat.com
Signed-off-by: Max Reitz <mreitz@redhat.com>
2017-07-11 17:45:01 +02:00
Stefan Hajnoczi
217a0683b7 qemu-iotests: support per-format golden output files
Some tests produce format-dependent output.  Either the difference is
filtered out and ignored, or the test case is format-specific so we
don't need to worry about per-format output differences.

There is a third case: the test script is the same for all image formats
and the format-dependent output is relevant.  An ugly workaround is to
copy-paste the test into multiple per-format test cases.  This
duplicates code and is not maintainable.

This patch allows test cases to add per-format golden output files so a
single test case can work correctly when format-dependent output must be
checked:

  123.out.qcow2
  123.out.raw
  123.out.vmdk
  ...

This naming scheme is not composable with 123.out.nocache or 123.pc.out,
two other scenarios where output files are split.  I don't think it
matters since few test cases need these features.

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Alberto Garcia <berto@igalia.com>
Message-id: 20170705125738.8777-9-stefanha@redhat.com
Signed-off-by: Max Reitz <mreitz@redhat.com>
2017-07-11 17:45:01 +02:00
Eric Blake
b43671f80c tests: Avoid non-portable 'echo -ARG'
POSIX says that backslashes in the arguments to 'echo', as well as
any use of 'echo -n' and 'echo -e', are non-portable; it recommends
people should favor 'printf' instead.  This is definitely true where
we do not control which shell is running (such as in makefile snippets
or in documentation examples).  But even for scripts where we
require bash (and therefore, where echo does what we want by default),
it is still possible to use 'shopt -s xpg_echo' to change bash's
behavior of echo.  And setting a good example never hurts when we are
not sure if a snippet will be copied from a bash-only script to a
general shell script (although I don't change the use of non-portable
\e for ESC when we know the running shell is bash).

Replace 'echo -n "..."' with 'printf %s "..."', and 'echo -e "..."'
with 'printf %b "...\n"', with the optimization that the %s/%b
argument can be omitted if the string being printed is a strict
literal with no '%', '$', or '`' (we could technically also make
this optimization when there are $ or `` substitutions but where
we can prove their results will not be problematic, but proving
that such substitutions are safe makes the patch less trivial
compared to just being consistent).

In the qemu-iotests check script, fix unusual shell quoting
that would result in word-splitting if 'date' outputs a space.

In test 051, take an opportunity to shorten the line.

In test 068, get rid of a pointless second invocation of bash.

CC: qemu-trivial@nongnu.org
Signed-off-by: Eric Blake <eblake@redhat.com>
Message-id: 20170703180950.9895-1-eblake@redhat.com
Signed-off-by: Max Reitz <mreitz@redhat.com>
2017-07-11 17:45:00 +02:00
Max Reitz
6f55dfa4a4 iotests: Add test for colon handling
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>
Message-id: 20170702150510.23276-3-mreitz@redhat.com
Signed-off-by: Max Reitz <mreitz@redhat.com>
2017-07-11 17:45:00 +02:00
Max Reitz
3190683ea3 iotests: Use absolute paths for executables
A user may specify a relative path for accessing qemu, qemu-img, etc.
through environment variables ($QEMU_PROG and friends) or a symlink.

If a test decides to change its working directory, relative paths will
cease to work, however. Work around this by making all of the paths to
programs that should undergo testing absolute. Besides "realpath", we
also have to use "type -p" to support programs in $PATH.

As a side effect, this fixes specifying these programs as symlinks for
out-of-tree builds: Before, you would have to create two symlinks, one
in the build and one in the source tree (the first one for common.config
to find, the second one for the iotest to use). Now it is sufficient to
create one in the build tree because common.config will resolve it.

Reported-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>
Message-id: 20170702150510.23276-2-mreitz@redhat.com
Reviewed-by: Eric Blake <eblake@redhat.com>
Tested-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>
2017-07-11 17:45:00 +02:00
Daniel P. Berrange
ae50b71db0 iotests: chown LUKS device before qemu-io launches
On some distros, whenever you close a block device file
descriptor there is a udev rule that resets the file
permissions. This can race with the test script when
we run qemu-io multiple times against the same block
device. Occasionally the second qemu-io invocation
will find udev has reset the permissions causing failure.

Reviewed-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Message-id: 20170626123510.20134-6-berrange@redhat.com
Signed-off-by: Max Reitz <mreitz@redhat.com>
2017-07-11 17:45:00 +02:00
Daniel P. Berrange
a488e71e1e iotests: add more LUKS hash combination tests
Add tests for sha224, sha512, sha384 and ripemd160 hash
algorithms.

Reviewed-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Message-id: 20170626123510.20134-5-berrange@redhat.com
Signed-off-by: Max Reitz <mreitz@redhat.com>
2017-07-11 17:45:00 +02:00
Daniel P. Berrange
307d999198 iotests: reduce PBKDF iterations when testing LUKS
By default the PBKDF algorithm used with LUKS is tuned
based on the number of iterations to produce 1 second
of running time. This makes running the I/O test with
the LUKS format orders of magnitude slower than with
qcow2/raw formats.

When creating LUKS images, set the iteration time to
a 10ms to reduce the time overhead for LUKS, since
security does not matter in I/O tests.

Previously a full 'check -luks' would take

  $ time ./check -luks
  Passed all 22 tests

  real  23m9.988s
  user  21m46.223s
  sys   0m22.841s

Now it takes

  $ time ./check -luks
  Passed all 22 tests

  real  4m39.235s
  user  3m29.590s
  sys   0m24.234s

Still slow compared to qcow2/raw, but much improved
none the less.

Reviewed-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Message-id: 20170626123510.20134-4-berrange@redhat.com
Signed-off-by: Max Reitz <mreitz@redhat.com>
2017-07-11 17:45:00 +02:00
Daniel P. Berrange
13a1d4a71b iotests: fix remainining tests to work with LUKS
The tests 033, 140, 145 and 157 were all broken
when run with LUKS, since they did not correctly use
the required image opts args syntax to specify the
decryption secret. Further, the 120 test simply does
not make sense to run with luks, as the scenario
exercised is not relevant.

The test 181 was broken when run with LUKS because
it didn't take account of fact that $TEST_IMG was
already in image opts syntax. The launch_qemu
helper also didn't register the secret object
providing the LUKS password.

Reviewed-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Message-id: 20170626123510.20134-3-berrange@redhat.com
Signed-off-by: Max Reitz <mreitz@redhat.com>
2017-07-11 17:44:59 +02:00
Daniel P. Berrange
2c6f600642 iotests: skip 159 & 170 with luks format
While the qemu-img dd command does accept --image-opts
this is not sufficient to make it work with the LUKS
image yet. This is because bdrv_create() still always
requires the non-image-opts syntax.

Thus we must skip 159/170 with luks for now

Reviewed-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Message-id: 20170626123510.20134-2-berrange@redhat.com
Signed-off-by: Max Reitz <mreitz@redhat.com>
2017-07-11 17:44:59 +02:00