There is this class of PCI devices that act like disks: NVMe.
Therefore, they are both PCI devices and disks. While we already
have <hostdev/> (and can assign a NVMe device to a domain
successfully) we don't have disk representation. There are three
problems with PCI assignment in case of a NVMe device:
1) domains with <hostdev/> can't be migrated
2) NVMe device is assigned whole, there's no way to assign only a
namespace
3) Because hypervisors see <hostdev/> they don't put block layer
on top of it - users don't get all the fancy features like
snapshots
NVMe namespaces are way of splitting one continuous NVDIMM memory
into smaller ones, effectively creating smaller NVMe-s (which can
then be partitioned, LVMed, etc.)
Because of all of this the following XML was chosen to model a
NVMe device:
<disk type='nvme' device='disk'>
<driver name='qemu' type='raw'/>
<source type='pci' managed='yes' namespace='1'>
<address domain='0x0000' bus='0x01' slot='0x00' function='0x0'/>
</source>
<target dev='vda' bus='virtio'/>
</disk>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Cole Robinson <crobinso@redhat.com>
There are going to be more disk types that are considered unsafe
with respect to migration. Therefore, move the error reporting
call outside of if() body and rework if-else combo to switch().
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Cole Robinson <crobinso@redhat.com>
This helper is cleaner than plain memcpy() because one doesn't
have to look into virPCIDeviceAddress struct to see if it
contains any strings / pointers.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
ACKed-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Cole Robinson <crobinso@redhat.com>
In near future we will have a list of PCI devices we want to
re-attach to the host (held in virPCIDeviceListPtr) but we don't
have virDomainHostdevDefPtr. That's okay because
virHostdevReAttachPCIDevices() works with virPCIDeviceListPtr
mostly anyway. And in very few places where it needs
virDomainHostdevDefPtr are not interesting for our case.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
ACKed-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Cole Robinson <crobinso@redhat.com>
In near future we will have a list of PCI devices we want to
detach (held in virPCIDeviceListPtr) but we don't have
virDomainHostdevDefPtr. That's okay because
virHostdevPreparePCIDevices() works with virPCIDeviceListPtr
mostly anyway. And in very few places where it needs
virDomainHostdevDefPtr are not interesting for our case.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
ACKed-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Cole Robinson <crobinso@redhat.com>
Sometimes, we have a PCI address and not fully allocated
virPCIDevice and yet we still want to know its /dev/vfio/N path.
Introduce virPCIDeviceAddressGetIOMMUGroupDev() function exactly
for that.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Cole Robinson <crobinso@redhat.com>
Previous patches rendered some of 'cleanup' labels needless.
Drop them.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Cole Robinson <crobinso@redhat.com>
Now that all callers of qemuDomainGetHostdevPath() handle
/dev/vfio/vfio on their own, we can safely drop handling in this
function. In near future the decision whether domain needs VFIO
file is going to include more device types than just
virDomainHostdev.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Cole Robinson <crobinso@redhat.com>
There are several variables which could be automatically freed
upon return from the function. I'm not changing @tmpPaths (which
is a string list) because it is going to be removed in next
commit.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Cole Robinson <crobinso@redhat.com>
In near future, the decision what to do with /dev/vfio/vfio with
respect to domain namespace and CGroup is going to be moved out
of qemuDomainGetHostdevPath() because there will be some other
types of devices than hostdevs that need access to VFIO.
All functions that I'm changing (except qemuSetupHostdevCgroup())
assume that hostdev we are adding/removing to VM is not in the
definition yet (because of how qemuDomainNeedsVFIO() is written).
Fortunately, this assumption is true.
For qemuSetupHostdevCgroup(), the worst thing that may happen is
that we allow /dev/vfio/vfio which was already allowed.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Cole Robinson <crobinso@redhat.com>
qemuBuildSoundCodecStr() validates if a given QEMU binary
supports the sound codec. This validation can be moved to
qemu_domain.c to be executed in domain define time.
The codec validation was moved to the existing
qemuDomainDeviceDefValidateSound() function.
Reviewed-by: Cole Robinson <crobinso@redhat.com>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Move QEMU caps validation of QEMU_CAPS_OBJECT_USB_AUDIO and
QEMU_CAPS_DEVICE_ICH9_INTEL_HDA to a new function in qemu_domain.c,
qemuDomainDeviceDefValidateSound(). This function is called by
qemuDomainDeviceDefValidate() to validate the sound device
in domain define time.
qemuxml2xmltest.c was adjusted to add the now required caps for
domain definition.
Reviewed-by: Cole Robinson <crobinso@redhat.com>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
qemuBuildTPMDevStr() does TPM model validation that can be moved to
qemu_domain.c, allowing validation in domain define time. This patch
moves it to the existing qemuDomainDeviceDefValidateTPM() function.
Reviewed-by: Cole Robinson <crobinso@redhat.com>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Console validation is currently being done by qemuBuildConsoleCommandLine().
This patch moves it to a new qemuDomainDefValidateConsole() function. This
new function is then called by qemuDomainDefValidate(), validating the
console in domain define time.
Reviewed-by: Cole Robinson <crobinso@redhat.com>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Move the SPICE caps validation from qemuBuildGraphicsSPICECommandLine()
to a new function called qemuDomainDeviceDefValidateSPICEGraphics().
This function is called by qemuDomainDeviceDefValidateGraphics(),
which in turn is called by qemuDomainDefValidate(), validating the graphics
parameters in domain define time.
This validation move exposed a flaw in the 'default-video-type' tests
for PPC64, AARCH64 and s390 archs. The XML was considering 'spice' as
the default video type, which isn't true for those architectures.
This was flying under the radar until now because the SPICE validation
was being made in 'virsh start' time, while the XML validation done in
qemuxml2xmltest.c considers define time.
All other tests were adapted to consider SPICE validation in this
earlier stage.
Reviewed-by: Cole Robinson <crobinso@redhat.com>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Move the VNC cap validation from qemuBuildGraphicsVNCCommandLine()
to qemuDomainDeviceDefValidateGraphics(). This function is called by
qemuDomainDefValidate(), validating the graphics parameters in domain
define time.
Tests were adapted to consider SDL validation in this earlier stage.
Reviewed-by: Cole Robinson <crobinso@redhat.com>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
There are validations for SDL, VNC, SPICE and EGL_HEADLESS
around several BuildGraphics*CommandLine in qemu_command.c. This
patch starts to move all of them to qemu_domain.c, inside the
existent qemuDomainDeviceDefValidateGraphics() function. This
function is called by qemuDomainDefValidate(), validating the
graphics parameters in domain define time.
In this patch we'll move the SDL validation code from
qemuBuildGraphicsSDLCommandLine(). Tests were adapted to consider
SDL validation in this earlier stage.
Reviewed-by: Cole Robinson <crobinso@redhat.com>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Move the pcihole64 validation being done by
qemuBuildGlobalControllerCommandLine() to the existing function
qemuDomainDeviceDefValidateControllerPCI(), which provides
domain define time validation.
The existing pcihole64 validations in qemu_domain.c were replaced
by the ones moved from qemu_command.c. The reason is that they
are more specific, allowing VIR_DOMAIN_CONTROLLER_MODEL_PCI_ROOT
and VIR_DOMAIN_CONTROLLER_MODEL_PCIE_ROOT to have distinct validation,
with exclusive QEMU caps and machine types.
Tests were adapted to consider the new caps being needed in
this earlier stage.
Reviewed-by: Cole Robinson <crobinso@redhat.com>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Move the boot validation being done by qemuBuildBootCommandLine()
to to a new qemuDomainDefValidateBoot() function. This new function
is called by qemuDomainDefValidate(), allowing boot validation in
domain define time.
Tests were adapted to consider the new caps being needed in
this earlier stage.
Reviewed-by: Cole Robinson <crobinso@redhat.com>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Move the PM validation being done by qemuBuildPMCommandLine() to
to a new qemuDomainDefValidatePM() function. This new function
is called by qemuDomainDefValidate(), promoting PM validation in
domain define time.
Tests were adapted to consider the new caps being needed in
this earlier stage.
Reviewed-by: Cole Robinson <crobinso@redhat.com>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
@def->clock validation is done by qemuBuildClockCommandLine() and
qemuBuildClockArgStr(). This patch centralize the validation done
in both these functions to a new qemuDomainDefValidateClockTimers()
function. This new function is then called by qemuDomainDefValidate(),
promoting clock validation in domain define time.
Tests were adapted to consider the new caps being needed in
this earlier stage.
Reviewed-by: Cole Robinson <crobinso@redhat.com>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
QEMU_CAPS_DEVICE_VMGENID is now being validated by
qemuDomainDefValidate().
Reviewed-by: Cole Robinson <crobinso@redhat.com>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Move QEMU caps validation of qemuBuildHostdevCommandLine() to
qemuDomainDeviceDefValidateHostdev() and qemuDomainMdevDefValidate(),
allowing them to be validated at domain define time.
Tests were adapted to consider the new caps being needed in
this earlier stage.
Reviewed-by: Cole Robinson <crobinso@redhat.com>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Move QEMU caps validation of QEMU_CAPS_CHARDEV_FILE_APPEND and
QEMU_CAPS_CHARDEV_LOGFILE to qemuDomainChrSourceDefValidate().
Reviewed-by: Cole Robinson <crobinso@redhat.com>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Move QEMU caps validation of QEMU_CAPS_USB_HUB to a new function in
qemu_domain.c, qemuDomainDeviceDefValidateHub(). This function is
called by qemuDomainDeviceDefValidate() to validate the sound device
in domain define time.
qemuxml2xmltest.c was adjusted to add the now required caps for
domain definition.
Reviewed-by: Cole Robinson <crobinso@redhat.com>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
A new function qemuDomainDeviceDefValidateNVRAM() was created
to validate the NVRAM in domain define time. Unit test was
adjusted to account for the extra QEMU_CAPS_DEVICE_NVRAM required
during domain define.
Reviewed-by: Cole Robinson <crobinso@redhat.com>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
A new qemuDomainDefValidateNuma() function was created to host
all the QEMU caps validation being done inside qemuBuildNumaArgStr().
This new function is called by qemuDomainValidateCpuCount()
to allow NUMA validation in domain define time.
Tests were changed to account for the QEMU capabilities
that need to be present at domain define time.
Reviewed-by: Cole Robinson <crobinso@redhat.com>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Next patch will validate QEMU_CAPS_NUMA_DIST in a new qemu_domain.c
function. The code to verify if a NUMA node distance is being
set will still be needed in qemuBuildNumaArgStr() though.
To avoid code repetition, let's put this logic in a helper to be
used in qemuBuildNumaArgStr() and in the new function.
Reviewed-by: Cole Robinson <crobinso@redhat.com>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Validation of MACHINE_KERNEL_IRQCHIP and MACHINE_KERNEL_IRQCHIP_SPLIT
QEMU caps are now being done in qemuDomainDefValidateFeatures().
Reviewed-by: Cole Robinson <crobinso@redhat.com>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
virQEMUCapsSupportsVmport() is now being called inside
qemuDomainDefValidateFeatures() for VIR_DOMAIN_FEATURE_VMPORT
feature.
qemuxml2xmltest.c was changed to account for this caps being
now validated at domain define time.
Reviewed-by: Cole Robinson <crobinso@redhat.com>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Introduce a new function called qemuDomainDefValidatePSeriesFeature()
that will center all the PSeries validation done in qemu_command.c.
qemuDomainDefValidatePSeriesFeature() is then called during domain
define time, in qemuDomainDefValidateFeatures().
qemuxml2argvtest.c is also changed to include all the caps that now
are being validated in define time.
Reviewed-by: Cole Robinson <crobinso@redhat.com>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Qemu commit e900135dcfb67 ("i386: Add CPUID bit for CLZERO and XSAVEERPTR")
adds support for CLZERO CPUID bit.
This commit extends support for this CPUID bit into libvirt.
Signed-off-by: Ani Sinha <ani.sinha@nutanix.com>
Message-Id: <1575371352-99055-1-git-send-email-ani.sinha@nutanix.com>
Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
These days libvirt is pretty reliable and even remote connections
(not the default for libvirt-guests anyway) either work or fail but are
uncommon to be flaky.
On the other hand users might have disabled the service and while we are
After=libvirtd for ordering we are not Requiring it. Adding that or any
harder dependency might break our ordering. But if people have disabled
libvirt they will do a full retry loop until timeout.
Lets drop the loop to be much faster if a remote is not reachable.
Fixes: https://bugs.launchpad.net/ubuntu/+source/libvirt/+bug/1854653
This reverts
commit 4e7fc8305a
Author: Michal Prívozník <mprivozn@redhat.com>
Date: Fri Feb 21 12:46:08 2014 +0100
libvirt-guests: Wait for libvirtd to initialize
The race described in that commit no longer exists using systemd as
we now have socket activation. If not using systemd, then it is also
safe if using the libvirtd --daemon flag, since the parent process
won't return to the caller until the child is accepting connections.
Reported-by: Doug Smythies <dsmythies@telus.net>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Christian Ehrhardt <christian.ehrhardt@canonical.com>
There is plenty of distributions that haven't switched to
systemd nor they force their users to (Gentoo, Alpine Linux to
name a few). With the daemon split merged their only option is to
still use the monolithic daemon which will go away eventually.
Provide init scripts for these distros too.
For now, I'm not introducing config files which would correspond
to the init files except for libvirtd and virtproxyd init scripts
where it might be desirable to tweak the command line of
corresponding daemons.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
To free the structs and save the error, it is not necessary to hold @priv->lock,
therefore move these parts after the mutex unlock.
Reviewed-by: Cole Robinson <crobinso@redhat.com>
Signed-off-by: Marc Hartmayer <mhartmay@linux.ibm.com>
This patch introduces virNetServerGetProgramLocked. It's a function to
determine which program has to be used for a given @msg. This function
will be reused in the next patch.
Signed-off-by: Marc Hartmayer <mhartmay@linux.ibm.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
As a result, you can later determine during the callback which program
was used. This makes it easier to refactor the code in the future and
is less prone to error.
Signed-off-by: Marc Hartmayer <mhartmay@linux.ibm.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
Use the return value of virObjectRef directly. This way, it's easier
for another reader to identify the reason why the additional reference
is required.
Signed-off-by: Marc Hartmayer <mhartmay@linux.ibm.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
Following domain configuration changes create two memory bandwidth
monitors: one is monitoring the bandwidth consumed by vCPU 0,
another is for vCPU 5.
```
<cputune>
<memorytune vcpus='0-4'>
<node id='0' bandwidth='20'/>
<node id='1' bandwidth='30'/>
+ <monitor vcpus='0'/>
</memorytune>
+ <memorytune vcpus='5'>
+ <monitor vcpus='5'/>
+ </memorytune>
</cputune>
```
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Huaqiang <huaqiang.wang@intel.com>
Originally, inside <cputune/cachetune>, it requires the <cache> element to
be in the position before <monitor>, and following configuration is not
permitted by schema, but it is better to let it be valid.
<cputune>
<cachetune vcpus='0-1'>
<monitor level='3' vcpus='0-1'/>
^
|__ Not permitted originally because it is in the place
before <cache> element.
<cache id='0' level='3' type='both' size='3' unit='MiB'/>
<cache id='1' level='3' type='both' size='3' unit='MiB'/>
</cachetune>
...
</cputune>
And, let schema do more strict check by identifying following configuration to
be invalid, due to <cachetune> should contain at least one <cache> or <monitor>
element.
<cputune>
<cachetune vcpus='0-1'>
^
|__ a <cachetune> SHOULD contain at least one <cache> or <monitor>
</cachetune>
...
</cputune>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Huaqiang <huaqiang.wang@intel.com>
We learned that the hardware features of CAT, CMT, MBA and MBM
are orthogonal ones, if CAT or MBA is not supported in system,
but CMT or MBM are supported, then the cache monitor or
memoryBW monitor features may not be correctly displayed in
host capabilities through command 'virsh capabilites'.
Showing the cache/memoryBW monitor capabilities even there is
no support of cache allocation or memoryBW allocation features.
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Huaqiang <huaqiang.wang@intel.com>
As of commit 2a00ef6e71 which
was released in v5.2.0, we require YAJL to build the QEMU driver.
Remove the checks from code that requires the QEMU driver
or checks that also check for WITH_QEMU.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Both the application developer guide and virsh command
reference are unmaintained for best part of 8 years, and
so horrifically out of date. This does not give a good
impression to people reading the docs. Now that we are
publishing the man pages online, those are a better
doc to read for virsh. We can also highlight the API
reference instead of the app dev guide.
The virsh command reference & app dev guide will
still exist on the web root, but will not be linked
to.
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
