Make sure that the topology results into a sane number of cpus (up to
UINT_MAX) so that it can be sanely compared to the vcpu count of the VM.
Additionally the helper added in this patch allows to fetch the total
number the topology results to so that it does not have to be
reimplemented later.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1378290
This is mainly virLogAddOutputTo* which were replaced by virLogNewOutputTo* and
the previously poorly named ones virLogParseAndDefine* functions. All of these
are unnecessary now, since all the original callers were transparently switched
to the new model of separate parsing and defining logic.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
This method will eventually replace virLogParseAndDefineFilters which
currently does both parsing and defining.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
This API is the entry point to output modification of the logger. Currently,
everything is done by virLogParseAndDefineOutputs. Parsing and defining will be
split into two operations both handled by this method transparently.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
Abstraction added over parsing a single filter. The method parses potentially a
set of logging filters, while adding each filter logging object to a
caller-provided array.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
Another abstraction added on the top of parsing a single logging output. This
method takes and parses the whole set of outputs, adding each single output
that has already been parsed into a caller-provided array. If the user-supplied
string contained duplicate outputs, only the last occurrence is taken into
account (all the others are removed from the list), so we silently avoid
duplicate logs.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
Same as for outputs, introduce a new method, that is basically the same as
virLogParseAndDefineFilter with the difference that it does not define the
filter. It rather returns a newly created object that needs to be inserted into
a list and then defined separately.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
Introduce a method to parse an individual logging output. The difference
compared to the virLogParseAndDefineOutput is that this method does not define
the output, instead it makes use of the virLogNewOutputTo* methods introduced
in the previous patch and just returns the virLogOutput object that has to be
added to a list of object which then can be defined as a whole via
virLogDefineOutputs. The idea remains still the same - split parsing and
defining of the logging primitives (outputs, filters).
Additionally, since virLogNewOutputTo* methods are now finally used,
ATTRIBUTE_UNUSED can be successfully removed from the methods' definitions,
since that was just to avoid compiler complaints about unused static functions.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
Prepare a method that only defines a set of filters. It takes a list of
filters, preferably created by virLogParseFilters. The original set of filters
is reset and replaced by the new user-provided set of filters.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
Prepare a method that only defines a set of outputs. It takes a list of
outputs, preferably created by virLogParseOutputs. The original set of outputs
is reset and replaced by the new user-provided set of outputs.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
Outputs are a bit trickier than filters, since the user(config)-specified
set of outputs can contain duplicates. That would lead to logging the same
message twice. For compatibility reasons, we cannot just error out and forbid
the daemon to start if we find duplicate outputs which do not make sense.
Instead, we could silently take into account only the last occurrence of the
duplicate output and remove all the previous ones, so that the logger will not
try to use them when it is looping over all of its registered outputs.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
In order to later split output parsing and output defining, introduce a new
function which will create a new virLogOutput object which the parser will
insert into a list with the list being eventually defined.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
Right now virLogParse* functions are doing both parsing and defining of filters
and outputs which should be two separate operations. Since the naming is
apparently a bit poor this patch renames these functions to
virLogParseAndDefine* which eventually will be replaced by virLogSet*.
Additionally, virLogParse{Filter,Output} will be later (after the split) reused,
so that these functions do exactly what the their name suggests.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
Provide the Steal API for any code paths that will desire to grab the
object array and then free it afterwards rather than relying to freeing
the whole chain from the reply.
Certain operations may make the vcpu order information invalid. Since
the order is primarily used to ensure migration compatibility and has
basically no other user benefits, clear the order prior to certain
operations and document that it may be cleared.
All the operations that would clear the order can still be properly
executed by defining a new domain configuration rather than using the
helper APIs.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1370357
Both cpuCompare* APIs are renamed to virCPUCompare*. And they should now
work for any guest CPU definition, i.e., even for host-passthrough
(trivial) and host-model CPUs. The implementation in x86 driver is
enhanced to provide a hint about -noTSX Broadwell and Haswell models
when appropriate.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
The function is similar to virCPUDataCheckFeature, but it works directly
on CPU definition rather than requiring it to be transformed into CPU
data first.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
The API is supposed to make sure the provided CPU definition does not
use a CPU model which is not supported by the hypervisor (if at all
possible, of course).
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
The reworked API is now called virCPUUpdate and it should change the
provided CPU definition into a one which can be consumed by the QEMU
command line builder:
- host-passthrough remains unchanged
- host-model is turned into custom CPU with a model and features
copied from host
- custom CPU with minimum match is converted similarly to host-model
- optional features are updated according to host's CPU
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
The function filters all CPU features through a given callback while
copying CPU model related parts of a CPU definition.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
The function moves CPU model related parts from one CPU definition to
another. It can be used to avoid unnecessary copies from a temporary CPU
definitions which will be freed anyway.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Useful for copying a CPU definition without model related parts (i.e.,
without model name, feature list, vendor).
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
In case a hypervisor is able to tell us a list of supported CPU models
and whether each CPU models can be used on the current host, we can
propagate this to domain capabilities. This is a better alternative
to calling virConnectCompareCPU for each supported CPU model.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Listing all CPU models supported by QEMU in domain capabilities makes
little sense when libvirt will refuse any model it doesn't know about.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
The patch adds <cpu> element to domain capabilities XML:
<cpu>
<mode name='host-passthrough' supported='yes'/>
<mode name='host-model' supported='yes'/>
<mode name='custom' supported='yes'>
<model>Broadwell</model>
<model>Broadwell-noTSX</model>
...
</mode>
</cpu>
Applications can use it to inspect what CPU configuration modes are
supported for a specific combination of domain type, emulator binary,
guest architecture and machine type.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
We will need this function shortly when implementing
nodeGetCPUStats in the test driver.
Signed-off-by: Tomáš Ryšavý <tom.rysavy.0@gmail.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Name it virNumaGetHostMemoryNodeset and return only NUMA nodes which
have memory installed. This is necessary as the kernel is not very happy
to set the memory cgroup setting for nodes which do not have any memory.
This would break vcpu hotplug with following message on such
configruation:
Invalid value '0,8' for 'cpuset.mems': Invalid argument
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1375268
The code for replacing domain's transient definition with the persistent
one is repeated in several places and we'll need to add one more. Let's
make a nice helper for it.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Currently the QEMU processes inherit their core dump rlimit
from libvirtd, which is really suboptimal. This change allows
their limit to be directly controlled from qemu.conf instead.
Since the domain lock is not held during preparation of an external XML
config, it is possible that the value can change resulting in unexpected
failures during ABI consistency checking for some save and migrate
operations.
This patch adds a new flag to skip the checking of the cur_balloon value
and then sets the destination value to the source value to ensure
subsequent checks without the skip flag will succeed.
This way it is protected from forges and is keeped up to date too.
Signed-off-by: Nikolay Shirokovskiy <nshirokovskiy@virtuozzo.com>
Finding an USB device from the vendor/device values will be needed
by libxl driver to convert from vendor/device to bus/dev addresses.
Signed-off-by: Jim Fehlig <jfehlig@suse.com>
This event is emitted when a nodedev XML definition is updated,
like when cdrom media is changed in a cdrom block device.
Also includes node device update event implementation for udev
backend, virsh nodedev-event support, and event-test support
https://bugzilla.redhat.com/show_bug.cgi?id=1356436
According to RFC 3721 (https://www.ietf.org/rfc/rfc3721.txt), there are
two ways to "discover" targets in/for the iSCSI environment. Discovery
is the process which allows the initiator to find the targets to which
it has access and at least one address at which each target may be
accessed.
The method currently implemented in libvirt using the virISCSIScanTargets
API is known as "SendTargets" discovery. This method is more useful when
the target IP Address and TCP port information are available, e.g. in
libvirt terms the "portal". It returns a list of targets for the portal.
From that list, the target can be found. This operation can also fill an
iSCSI node table into which iSCSI logins may occur. Commit id '56057900'
altered that filling by adding the "--op nonpersistent" since it was
not necessarily desired to perform that for non libvirt related targets.
The second method is "Static Configuration". This method not only needs
the IP Address and TCP port (e.g. portal), but also the iSCSI target name.
In libvirt terms this would be the device path field from the iSCSI pool
<source> XML. This patch implements the second methodology using that
required device path as the targetname.
To allow richer definitions of disk sources add infrastructure that will
allow to register functionst generating a JSON object based definition.
This infrastructure will then convert the definition to the proper
command line syntax and use it in cases where it's necessary. This will
allow to keep legacy definitions for back-compat when possible and use
the new definitions for the configurations requiring them.
Add support for converting objects nested in arrays with a numbering
discriminator on the command line. This syntax is used for the
object-based specification of disk source properties.
For use with memory hotplug virQEMUBuildCommandLineJSONRecurse attempted
to format JSON arrays as bitmap on the command line. Make the formatter
function configurable so that it can be reused with different syntaxes
of arrays such as numbered arrays for use with disk sources.
This patch extracts the code and adds a parameter for the function that
will allow to plug in different formatters.
Refactor the command line generator by adding a wrapper (with
documentation) that will handle the outermost object iteration.
This patch also renames the functions and tweaks the error message for
nested arrays to be more universal.
The new function is then reused to simplify qemucommandutiltest.
As we already test that the extraction of the backing store string works
well additional tests for the backing store string parser can be made
simpler.
Export virStorageSourceNewFromBackingAbsolute and use it to parse the
backing store strings, format them using virDomainDiskSourceFormat and
match them against expected XMLs.
Nothing in the code path after the removed call has needs/uses the alias
anyway (as would be the case for command line building or talking to monitor).
The alias is VIR_FREE'd in virDomainDeviceInfoClear which is called for any
device that needs/uses an alias via virDomainDeviceDefFree or virDomainDefFree
as well as during virDomainDeviceInfoFree for host devices.
For persistent domains, the domain definition (including aliases) gets
freed a few screens later when it's replaced with newDef.
For transient domains, the definition is freed/unref'd along with the
virDomainObj a few moments later.
The address sets (pci, ccw, virtio serial) are currently cached
in qemu private data, but all the information required to recreate
these sets is in the domain definition. Therefore I am removing
the redundant data and adding a way to recalculate these sets.
Add a function that calculates the virtio serial address set
from the domain definition.
Credit goes to Cole Robinson.
