Allow detecting capabilities according to the qemu QMP schema. This is
necessary as sometimes the availability of certain options depends on
the presence of a field in the schema.
This patch adds support for loading the QMP schema when detecting qemu
capabilities and adds a very simple query language to allow traversing
the schema and selecting a certain element from it.
The infrastructure in this patch uses a query path to set a specific
capability flag according to the availability of the given element in
the schema.
Remove the command from the supported commands list temporarily so that
QMP introspection code can be added without breaking tests and having to
tweak the test data in the same commit.
This will be later reverted and test data will be added. The aarch64
code is special as it calls additional commands and thus the test data
can't be added upfront.
Some operations like reboot, save, coreDump, blockStats,
ifaceStats make sense iff domain is running. While it is
technically possible for our test driver to return success
regardless of domain state, we should copy constraints from
other drivers and thus deny these operations over inactive
domains.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
https://bugzilla.redhat.com/show_bug.cgi?id=1379196
Add check in qemuCheckDiskConfig for an invalid combination
of using the 'scsi' bus for a block 'lun' device and any disk
source format other than 'raw'.
Fixes the behavior when destroying a domain more than once.
VIR_ERR_OPERATION_INVALID should be raised when destroying an
already destroyed domain.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Release tarballs ship the include/libvirt/libvirt-common.h.
when srcdir != builddir we end up including libvirt-common.h twice: from
$top_srcdir/include/libvirt-common.h and from
$builddir/include/libvirt-common.h leading to
function virTypedParamsGetUInt from /tmp/buildd/libvirt-2.4.0/debian/build/docs/../include/libvirt/libvirt-common.h redeclared in /tmp/buildd/libvirt-2.4.0/docs/../include/libvirt/libvirt-common.h
function virTypedParamsAddBoolean from /tmp/buildd/libvirt-2.4.0/debian/build/docs/../include/libvirt/libvirt-common.h redeclared in /tmp/buildd/libvirt-2.4.0/docs/../include/libvirt/libvirt-common.h
…
Only add the builddir to the search list if there is no pregenerated
libvirt-common.h.
Reuse the existing check that predates the libvirt.h → libvirt-common.h
split and that probably was meant for exactly that.
References: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=842452
Commit e8861f6971 changed our spec file to compile and run
tests in parallel. That's a very good step forward, but why
stop there? Let's run *all* make jobs in parallel and really
put those expensive cores to use!
On my laptop, this shaves ~10s off 'make rpm'.
${exec_prefix} and ${prefix} point to the same directory in
most setups, but when that's not the case the former should
be used for architecture-dependent data such as shared objects,
which makes it the best fit for our Wireshark dissector.
While at it, change all uses of $(var) to ${var}: they are
absolutely identicaly as far as make's concerned, but autoconf
itself seems to prefer the latter form so we might as well
follow suit.
We only need to strip $ws_prefix from $ws_plugindir if we've
retrieved it from pkg-config: if we're building it ourselves
from $libdir, we can just use it without further processing.
Commit c29e6d4805 cause build failure on RHEL-6:
../../src/qemu/qemu_capabilities.c: In function 'virQEMUCapsIsValid':
../../src/qemu/qemu_capabilities.c:4085: error: declaration of 'ctime'
shadows a global declaration [-Wshadow]
/usr/include/time.h:258: error: shadowed declaration is here [-Wshadow]
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
After 06a7b1ff4 the @&opts_need_arg is not used anywhere. Well,
it is set but never read:
vsh.c: In function 'vshReadlineParse':
vsh.c:2658:14: warning: variable 'opts_need_arg' set but not used [-Wunused-but-set-variable]
uint64_t opts_need_arg, opts_seen;
^~~~~~~~~~~~~
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Let's keep all run time validation of cached QEMU capabilities in
virQEMUCapsIsValid and call it whenever we access the cache.
virQEMUCapsInitCached should keep only the checks which do not make
sense once the cache is loaded in memory.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
virQEMUCapsLoadCache loads QEMU capabilities from a file, but strangely
enough it returns the loaded QEMU binary ctime in qemuctime parameter
instead of storing it in qemuCaps.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
This fixes a build issue with old gnutls.
Broken by commit 680d2f49da.
Reported-by: Olga Krishtal <okrishtal@virtuozzo.com>
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
So far, the main code is built in parallel, which makes it pretty
fast. But with a lots of tests we have now I've noticed this part
takes too much time to build. The problem was that tests were
build and run in a single job.
Also, 'make' in the first hunk is useless. The test suite is not
built due to 'make all' because there's no .git in the sources
unpacked from a tar.xz archive. It's 'make check' which triggers
tests build.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
This is needed in order to migrate a domain with shmem devices as that
is not allowed to migrate.
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
QEMU added support for ivshmem-plain and ivshmem-doorbell. Those are
reworked varians of legacy ivshmem that are compatible from the guest
POV, but not from host's POV and have sane specification and handling.
Details about the newer device type can be found in qemu's commit
5400c02b90bb:
http://git.qemu.org/?p=qemu.git;a=commit;h=5400c02b90bb
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
We're keeping some things at default and that's not something we want to
do intentionally. Let's save some sensible defaults upfront in order to
avoid having problems later. The details for the defaults (of the newer
implementation) can be found in qemu's commit 5400c02b90bb:
http://git.qemu.org/?p=qemu.git;a=commit;h=5400c02b90bb
Since we are merely saving the defaults it will not change the guest ABI
and thanks to the fact that we're doing it in the PostParse callback it
will not break the ABI stability checks.
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
The old ivshmem is deprecated in QEMU, so let's use the better
ivshmem-{plain,doorbell} variants instead.
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
Unlike other migration capabilities, post-copy is also set on the
destination host which means it doesn't disappear once domain is
migrated. As a result of that other functionality which internally uses
migration to a file (virDomainManagedSave, virDomainSave,
virDomainCoreDump) may fail after migration because the post-copy
capability is still set.
https://bugzilla.redhat.com/show_bug.cgi?id=1374718
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Commit d8a8af3492 changed the minimal required version of gnutls
so it's safe to remove the code for older versions.
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
The library.xen file contains a braindump of thoughts dating
from the very first days of libvirt, when it was briefly
called libxen. This is not useful and potentially misleading
or confusing for people.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Commit id 'dcfdf341' passes 'opts_need_arg' and 'opts_seen' to
vshCmddefGetData, but that seems to be incorrect as those values
are not initialized properly (something at least one compiler found).
Instead the static 'const_opts_need_arg' and 'const_opts_seen' values
should be passed.
By passing unitialized values leads to not finding possible options
for simpler commands (domfsfreeze for example), where if you're in
a virsh shell using command line completion - you'll get a list of
files in your current directory instead of two options --domain and
--mountpoint (as would happen with this patch applied.
Correcting the error reporting method by using VSH_REQUIRE_OPTION
instead of virReportError
Signed-off-by: Kothapally Madhu Pavan <kmp@linux.vnet.ibm.com>
commit 9065cfaa added the ability to disable DNS services for a
libvirt virtual network. If neither DNS nor DHCP is needed for a
network, then we don't need to start dnsmasq, so code was added to
check for this.
Unfortunately, it was written with a great lack of attention to detail
(I can say that, because I was the author), and the loop that checked
if DHCP is needed for the network would never end if the network had
multiple IP addresses and the first <ip> had no <dhcp> subelement
(which would have contained a <range> or <host> subelement, thus
requiring DHCP services).
This patch rewrites the check to be more compact and (more
importantly) finite.
This bug was present in release 2.2.0 and 2.3.0, so will need to be
backported to any relevant maintainence branches.
Reported here:
https://www.redhat.com/archives/libvirt-users/2016-October/msg00032.htmlhttps://www.redhat.com/archives/libvirt-users/2016-October/msg00045.html
If we failed to unlink old dom cfg file, we goto rollback.
But inside rollback, we fogot to unlink the new dom cfg file.
This patch fixes this issue.
Signed-off-by: Chen Hanxiao <chenhanxiao@gmail.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Whilst working on another issue, I've noticed that in some
functions we have a local @driver variable among with access to
global @qemu_driver variable. This makes no sense.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Rather than waiting until we've free'd up all the resources, cause the
'workerPool' thread pool to flush as soon as possible during stateCleanup.
Otherwise, it's possible something waiting to run will SEGV such as is the
case during race conditions of simultaneous exiting libvirtd and qemu process.
Resolves the following crash:
[1] crash backtrace: (bt is shortened a bit):
0 0x00007ffff7282f2b in virClassIsDerivedFrom
(klass=0xdeadbeef, parent=0x55555581d650) at util/virobject.c:169
1 0x00007ffff72835fd in virObjectIsClass
(anyobj=0x7fffd024f580, klass=0x55555581d650) at util/virobject.c:365
2 0x00007ffff7283498 in virObjectLock
(anyobj=0x7fffd024f580) at util/virobject.c:317
3 0x00007ffff722f0a3 in virCloseCallbacksUnset
(closeCallbacks=0x7fffd024f580, vm=0x7fffd0194db0,
cb=0x7fffdf1af765 <qemuProcessAutoDestroy>)
at util/virclosecallbacks.c:164
4 0x00007fffdf1afa7b in qemuProcessAutoDestroyRemove
(driver=0x7fffd00f3a60, vm=0x7fffd0194db0) at qemu/qemu_process.c:6365
5 0x00007fffdf1adff1 in qemuProcessStop
(driver=0x7fffd00f3a60, vm=0x7fffd0194db0, reason=VIR_DOMAIN_SHUTOFF_CRASHED,
asyncJob=QEMU_ASYNC_JOB_NONE, flags=0)
at qemu/qemu_process.c:5877
6 0x00007fffdf1f711c in processMonitorEOFEvent
(driver=0x7fffd00f3a60, vm=0x7fffd0194db0) at qemu/qemu_driver.c:4545
7 0x00007fffdf1f7313 in qemuProcessEventHandler
(data=0x555555832710, opaque=0x7fffd00f3a60) at qemu/qemu_driver.c:4589
8 0x00007ffff72a84c4 in virThreadPoolWorker
(opaque=0x555555805da0) at util/virthreadpool.c:167
Thread 1 (Thread 0x7ffff7fb1880 (LWP 494472)):
1 0x00007ffff72a7898 in virCondWait
(c=0x7fffd01c21f8, m=0x7fffd01c21a0) at util/virthread.c:154
2 0x00007ffff72a8a22 in virThreadPoolFree
(pool=0x7fffd01c2160) at util/virthreadpool.c:290
3 0x00007fffdf1edd44 in qemuStateCleanup ()
at qemu/qemu_driver.c:1102
4 0x00007ffff736570a in virStateCleanup ()
at libvirt.c:807
5 0x000055555556f991 in main (argc=1, argv=0x7fffffffe458) at libvirtd.c:1660
Do not dereference the 'dmn' until after the virStateCleanup is completed.
During initialization, virStateInitialize requires/uses the "dmn" as the
argument to/for the daemonInhibitCallback functions. Thus, cleanup cannot
dereference 'dmn' until after calling the virStateCleanup which calls the
the daemonInhibitCallback using 'dmn'; otherwise, the following crash occurs:
backtrace (shortened a bit)
1 0x00007fd3a791b2e6 in virCondWait (c=<optimized out>, m=<optimized out>)
at util/virthread.c:154
2 0x00007fd3a791bcb0 in virThreadPoolFree (pool=0x7fd38024ee00)
at util/virthreadpool.c:266
3 0x00007fd38edaa00e in qemuStateCleanup () at qemu/qemu_driver.c:1116
4 0x00007fd3a79abfeb in virStateCleanup () at libvirt.c:808
5 0x00007fd3a85f2c9e in main (argc=<optimized out>, argv=<optimized out>)
at libvirtd.c:1660
Thread 1 (Thread 0x7fd38722d700 (LWP 32256)):
0 0x00007fd3a7900910 in virClassIsDerivedFrom
(klass=0xdfd36058d4853, parent=0x7fd3a8f394d0) at util/virobject.c:169
1 0x00007fd3a7900c4e in virObjectIsClass
(anyobj=anyobj@entry=0x7fd3a8f2f850, klass=<optimized out>)
at util/virobject.c:365
2 0x00007fd3a7900c74 in virObjectLock (anyobj=0x7fd3a8f2f850)
at util/virobject.c:317
3 0x00007fd3a7a24d5d in virNetDaemonRemoveShutdownInhibition
(dmn=0x7fd3a8f2f850) at rpc/virnetdaemon.c:547
4 0x00007fd38ed722cf in qemuProcessStop
(driver=driver@entry=0x7fd380103810, vm=vm@entry=0x7fd38025b6d0,
reason=reason@entry=VIR_DOMAIN_SHUTOFF_SHUTDOWN,
asyncJob=asyncJob@entry=QEMU_ASYNC_JOB_NONE, flags=flags@entry=0)
at qemu/qemu_process.c:5786
5 0x00007fd38edd9428 in processMonitorEOFEvent
(vm=0x7fd38025b6d0, driver=0x7fd380103810) at qemu/qemu_driver.c:4588
6 qemuProcessEventHandler (data=<optimized out>, opaque=0x7fd380103810)
at qemu/qemu_driver.c:4632
7 0x00007fd3a791bb55 in virThreadPoolWorker
(opaque=opaque@entry=0x7fd3a8f1e4c0) at util/virthreadpool.c:145
