5374 Commits

Author SHA1 Message Date
Peter Krempa
a24edc48c3 qemu: Implement virDomainGetGuestVcpus
Allow gathering available vcpu ids, their state and offlinability via
the qemu guest agent. The maximum id was chosen arbitrarily and ought
to be enough for everybody.
2016-06-22 09:26:08 +02:00
Peter Krempa
b1aa91e140 qemu: agent: Make setting of vcpus more robust
Documentation for the "guest-set-vcpus" command describes a proper
algorithm how to set vcpus. This patch makes the following changes:

- state of cpus that has not changed is not updated
- if the command was partially successful the command is re-tried with
  the rest of the arguments to get a proper error message
- code is more robust against malicious guest agent
- fix testsuite to the new semantics
2016-06-22 09:26:08 +02:00
Ján Tomko
8b3f0b767e Do not call postParse with ABI_UPDATE when parsing cmdline
So far this is only useful for recalculating NUMA memory size,
which this function cannot parse.

This will let us generate USB addresses based on this flag.
2016-06-21 18:23:56 +02:00
Andrea Bolognani
f83ab972bc qemu: Fix typo pci-extender-bus -> pci-expander-bus 2016-06-21 12:48:02 +02:00
Ján Tomko
ff52e9d43a Remove separator argument from virBitmapParse
Most the callers pass 0 in one form or another, including
vircapstest which used VIR_ARCH_NONE.
2016-06-20 12:09:52 +02:00
Andrea Bolognani
dc5821d743 qemu: Don't use legacy USB for aarch64 mach-virt guests
The '-usb' option doesn't have any effect for aarch64 mach-virt
guests, so the fact that it's currently enabled by default is not
really causing any issue.

However, that might change in the future (although unlikely), and
having it as part of the QEMU command line can cause confusion to
someone looking through the process list.

Avoid it completely, like it's already happening for q35.
2016-06-20 09:58:48 +02:00
Tomasz Flendrich
ec3f07f0a7 qemu_hotplug: Use a helper variable consistently 2016-06-19 15:55:37 +02:00
Ján Tomko
22d262c9b0 qemu: restore non-pci hostdev labels after detach
Commit 409de00 changed the logic to only match PCI devices
while moving this before Remove*HostDevice calls.

https://bugzilla.redhat.com/show_bug.cgi?id=1342874
2016-06-17 19:43:22 +02:00
Andrea Bolognani
86a68bdb0c qemu: Permit PCI-free aarch64 mach-virt guests
There has been some progress lately in enabling virtio-pci on
aarch64 guests; however, guest OS support is still spotty at best,
so most guests are going to be using virtio-mmio instead.

Currently, mach-virt guests are closely modeled after q35 guests,
and that includes always adding a dmi-to-pci-bridge that's just
impossible to get rid of. While that's acceptable (if suboptimal)
for q35, where you will always need some kind of PCI device anyway,
mach-virt guests should be allowed to avoid it.
2016-06-17 18:30:04 +02:00
Michal Privoznik
9e155e1d8a qemuDomainDetachDeviceConfig: Allow cold unplug of redirdevs
This is fairly simple. We lookup the device in the array of
devices and remove it. No magic.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
2016-06-17 18:12:43 +02:00
Michal Privoznik
3441274016 qemuDomainAttachDeviceConfig: Allow redirdev coldplug
This is really simple, we just need to append the device into the
domain def and that's it.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
2016-06-17 18:12:43 +02:00
Andrea Bolognani
b31b3eee85 qemu: Fix alignment in virDomainDefAddController() call 2016-06-17 13:06:52 +02:00
Peter Krempa
f8d565bf86 conf: Rename virDomainDefGetMemoryActual to virDomainDefGetMemoryTotal 2016-06-17 10:39:40 +02:00
Peter Krempa
a877a1635b conf: Remove pre-calculation of initial memory size
While we need to know the difference between the total memory stored in
<memory> and the actual size not included in the possible memory modules
we can't pre-calculate it reliably. This is due to the fact that
libvirt's XML is copied via formatting and parsing the XML and the
initial memory size can be reliably calculated only when certain
conditions are met due to backwards compatibility.

This patch removes the storage of 'initial_memory' and fixes the helpers
to recalculate the initial memory size all the time from the total
memory size. This conversion is possible when we also make sure that
memory hotplug accounts properly for the update of the total memory size
and thus the helpers for inserting and removing memory devices need to
be tweaked too.

This fixes a bug where a cold-plug and cold-remove of a memory device
would increase the size reported in <memory> in the XML by the size of
the memory device. This would happen as the persistent definition is
copied before attaching the device and this would lead to the loss of
data in 'initial_memory'.

Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1344892
2016-06-17 10:36:41 +02:00
Peter Krempa
da8285c44a qemu: perf: Don't set state of first event for every other event
A bug in the code used the value of the first perf event as state for
all the mentioned one rather than extracting individual ones.

Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1346730
2016-06-17 09:35:14 +02:00
Laine Stump
d5fb8f4564 qemu: don't add pci-bridge to Q35/arm domains unless it's needed
Until now, a Q35 domain (or arm/virt, or any other domain that has a
pcie-root bus) would always have a pci-bridge added, so that there
would be a hotpluggable standard PCI slot available to plug in any PCI
devices that might be added. This patch removes the explicit add,
instead relying on the pci-bridge being auto-added during PCI address
assignment (it will add a pci-bridge if there are no free slots).

This doesn't eliminate the dmi-to-pci-bridge controller that is
explicitly added whether or not a standard PCI slot is required (and
that is almost never used as anything other than a converter between
pcie.0's PCIe slots and standard PCI). That will be done separately.
2016-06-16 13:48:25 -04:00
Laine Stump
97b215a450 qemu: don't be as insistent about adding dmi-to-pci-bridge or pci-bridge
Previously there was no way to have a Q35 domain that didn't have
these two controllers. This patch skips their creation as long as
there are some other kinds of pci controllers at index 1 and 2
(e.g. some pcie-root-port controllers).

I'm hoping that soon we won't add them at all, plugging all devices
into auto-added pcie-*-port ports instead, but in the meantime this
makes it easier to experiment with alternative bus hierarchies.
2016-06-16 13:32:11 -04:00
Martin Kletzander
bce3d20d04 qemu: Remove useless block in processWatchdogEvent
Best viewed with -w since this is mostly just an indentation patch.

Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
2016-06-16 18:07:43 +02:00
Martin Kletzander
0aaeff96d6 qemu: Follow coding style convention
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
2016-06-16 18:07:43 +02:00
Martin Kletzander
5e1257820f qemu: Unify automatic coredump filenames
Just create a helper for it and use it.

Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
2016-06-16 18:07:43 +02:00
John Ferlan
f0fe184fb9 qemu: Add cfg pointer to various command line helpers
Soon at least one of them will need to grab something out of the
qemu config structure

Signed-off-by: John Ferlan <jferlan@redhat.com>
2016-06-16 11:57:45 -04:00
John Ferlan
7d49f2c199 qemu: Make qemuBuildShmemBackendStr private
It's not used externally anywhere else

Signed-off-by: John Ferlan <jferlan@redhat.com>
2016-06-16 11:57:45 -04:00
Martin Kletzander
ab74f60a36 qemu: Shorten domain name for watchdog coredump
Similarly to commit d294f6b0dff7, if the name is long enough, the
filename can be longer than filesystem's limit.

Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1334237

Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
2016-06-16 16:01:14 +02:00
Cole Robinson
e6001cc557 qemu: migration: use consistent error message
The other two DomainHasBlockJob usage error messages don't contain
'an', so unify things to save translators some effort. Dropping
the 'an' is closer to the sentence structure in the errors from
qemuDomainDiskBlockJobIsActive as well
2016-06-16 09:52:51 -04:00
Cole Robinson
b732704f49 qemu: More usage of qemuDomainDiskBlockJobIsActive
qemuDomainDiskBlockJobIsActive already checks if a disk has a
blockjob, and if so, raises an error
2016-06-16 09:52:51 -04:00
Ján Tomko
b9df355592 maint: remove whitespace from closing parentheses
To allow tightening syntax check.
2016-06-15 15:07:47 +02:00
John Ferlan
55931292c9 qemu: Refactor qemuDomainAttachChrDevice error paths
Refactor the error paths for attaching char device (it's about to be
more complicated).

Signed-off-by: John Ferlan <jferlan@redhat.com>
2016-06-14 08:41:45 -04:00
John Ferlan
d2e14efb05 caps: Add capability for tls-x509-creds
Add the capability flag and checks for the qemu object 'tls-creds-x509'

Signed-off-by: John Ferlan <jferlan@redhat.com>
2016-06-14 08:41:45 -04:00
Martin Kletzander
b842741ba4 qemu: Allow ACPI shutdown only for running domains
If the domain is not running, but for example the CPUs are stopped, the
ACPI event gets queued and resume of the domain will just shut it off.

https://bugzilla.redhat.com/show_bug.cgi?id=1216281

Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
2016-06-14 11:13:03 +02:00
Martin Kletzander
a781eae8c1 qemu: Obtain job before checking if domain is live
Since obtaining a job can wait for another job to finish, the state
might change in the meantime.  And checking it more than once is
pointless.

Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
2016-06-14 11:10:49 +02:00
Martin Kletzander
6445ad488f qemu: Add support for zero-detection writes
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
2016-06-14 08:25:25 +02:00
Jim Fehlig
fda5a98e9e driver config: Introduce virFirmware object
The virQEMUDriverConfig object contains lists of
loader:nvram pairs to advertise firmwares supported by
by the driver, and qemu_conf.c contains code to populate
the lists, all of which is useful for other drivers too.

To avoid code duplication, introduce a virFirmware object
to encapsulate firmware details and switch the qemu driver
to use it.

Signed-off-by: Jim Fehlig <jfehlig@suse.com>
2016-06-13 14:13:16 -06:00
Michal Privoznik
3668526fa6 qemuMonitorJSONAttachCharDev: Teach spicevmc
https://bugzilla.redhat.com/show_bug.cgi?id=1298070

We have the code for attaching redirdevs for ages now.
Unfortunately, our monitor code that handles talking to the qemu
process was missing a little piece of code that actually enabled
the feature.

BTW: it really is called "type" on the monitor, even though it's
called "name" on the cmd line. Don't ask.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
2016-06-10 15:22:07 +02:00
Daniel P. Berrange
86dd9fac0f nodeinfo: move host memory APIs out into virhostmem file
Move all APIs with a virHostMEM name prefix out into new
util/virhostmem.h & util/virhostmem.c files

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
2016-06-09 18:43:18 +01:00
Daniel P. Berrange
eaf18f4c2b nodeinfo: move host CPU APIs out into virhostcpu.c file
Move all APIs with a virHostCPU name prefix out into new
util/virhostcpu.h & util/virhostcpu.c files

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
2016-06-09 18:31:11 +01:00
Daniel P. Berrange
4053350bfe nodeinfo: rename all CPU APIs to have a virHostCPU prefix
In preparation for moving all the CPU related APIs out of
the nodeinfo file, give them a virHostCPU name prefix.

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
2016-06-09 18:08:15 +01:00
Daniel P. Berrange
dcfe37e682 nodeinfo: rename all memory APIs to have a virHostMem prefix
In preparation for moving all the memory related APIs out of
the nodeinfo file, give them a virHostMem name prefix.

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
2016-06-09 18:07:00 +01:00
Daniel P. Berrange
08ea852c25 nodeinfo: remove sysfs_prefix from all methods
Nearly all the methods in the nodeinfo file are given a
'const char *sysfs_prefix' parameter to override the
default sysfs path (/sys/devices/system). Every single
caller passes in NULL for this, except one use in the
unit tests. Furthermore this parameter is totally
Linux-specific, when the APIs are intended to be cross
platform portable.

This removes the sysfs_prefix parameter and instead gives
a new method linuxNodeInfoSetSysFSSystemPath for use by
the test suite.

For two of the methods this hardcodes use of the constant
SYSFS_SYSTEM_PATH, since the test suite does not need to
override the path for thos methods.

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
2016-06-09 18:00:18 +01:00
Martin Kletzander
5f4c50d528 qemu: Yet another check for blkdeviotune values
If you want to set block device I/O tuning values that end with '_max'
and there is nothing else set, libvirt emits an error.  In particular:

  error: internal error: Unexpected error

That's an unknown error.  That is because *_max values depend on their
respective non-_max values.  QEMU even says that in the error message
sent as a response to the monitor command:

  "error": {"class": "GenericError", "desc": "bps_max/iops_max require
  corresponding bps/iops values"}

the problem was that we didn't know that and there was no check for it.
Adding such check makes sure that there will be less confused users.

Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
2016-06-09 17:16:38 +02:00
Pavel Hrdina
93a2fb230a vnc: add support for listen type none
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
2016-06-09 14:46:45 +02:00
Pavel Hrdina
c34ada0996 spice: introduce listen type none
This new listen type is currently supported only by spice graphics.
It's introduced to make it easier and clearer specify to not listen
anywhere in order to start a guest with OpenGL support.

The old way to do this was set spice graphics autoport='no' and don't
specify any ports.  The new way is to use <listen type='none'/>.  In
order to be able to migrate to old libvirt the migratable XML will be
generated without the listen element and with autoport='no'.  Also the
old configuration will be automatically converted to the this listen
type.

Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
2016-06-09 14:44:08 +02:00
Pavel Hrdina
ffac505639 spice: introduce spice_auto_unix_socket config option
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
2016-06-09 14:43:39 +02:00
Pavel Hrdina
e0c309b2dc spice: add support for listen type socket
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1335832

Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
2016-06-09 14:43:15 +02:00
Pavel Hrdina
61a63abfe8 qemu_capabilites: add QEMU_CAPS_SPICE_UNIX
Add a new capability to detect support of unix sockets for spice
graphics.

Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
2016-06-09 14:43:09 +02:00
Pavel Hrdina
acc83afe33 vnc: add support for listen type 'socket'
VNC graphics already supports sockets but only via 'socket' attribute.
This patch coverts that attribute into listen type 'socket'.

For backward compatibility we need to handle listen type 'socket' and 'socket'
attribute properly to support old XMLs and new XMLs.  If both are provided they
have to match, if only one of them is provided we need to be able to parse that
configuration too.

To not break migration back to old libvirt if the socket is provided by user we
need to generate migratable XML without the listen element and use only 'socket'
attribute.

Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
2016-06-09 14:42:48 +02:00
Pavel Hrdina
b6465e1aa4 graphics: introduce new listen type 'socket'
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
2016-06-09 14:24:00 +02:00
Pavel Hrdina
c5caecab7b vnc: move generation of socket path to qemuProcessGraphicsSetupListen
This moves the socket generation if "vnc_auto_unix_socket" is set.

It also fixes a bug with this config option that we should auto-generate
socket path only if listen type is address and there is no address
specified.

Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
2016-06-09 14:22:34 +02:00
Pavel Hrdina
17271d04e7 vnc: rename socketAutogenerated to socketFromConfig
Even though it's auto-generated it's based on qemu.conf option and listen type
address already uses "fromConfig" to carry this information.  Following commits
will convert the socket to listen element so this rename is required because
there will be also an option to get socket auto-generated independently on the
qemu.conf option.

Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
2016-06-09 14:22:30 +02:00
Pavel Hrdina
fdff47c587 qemu_command: move websocket code into else part for address listen
There is no need to check again for vnc socket.

Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
2016-06-09 14:22:27 +02:00
Martin Kletzander
326e5941cd qemu: Generate channel target paths on hotplug as well
Since commit 714080791778e3dfbd484ccb3953bffd820b8ba9, qemu agent
channel cannot be plugged in because we won't generate its path
automatically.  Let's not only fix that, but also add tests for it so
next time it's checked for.

Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1322210

Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
2016-06-09 13:27:54 +02:00