We already report whether iSCSI backend was enabled at compile
time, but we don't do the same with iSCSI-direct backend.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
When displaying long version (virsh -V), the 'Virtuozzo Storage'
substring lacks leading space and thus produces awful output.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
Use same style in the 'struct option' as:
struct option opt[] = {
{ a, b },
{ a, b },
...
{ a, b },
};
Signed-off-by: Jiang Jiacheng <jiangjiacheng@huawei.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
It is possible to build OVMF for SEV with an embedded Grub that can
fetch LUKS disk secrets. This adds support for injecting secrets in
the required format.
Reviewed-by: Cole Robinson <crobinso@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
When validating a SEV-ES guest, we need to know the CPU count and VMSA
state. We can get the CPU count directly from libvirt's guest info. The
VMSA state can be constructed automatically if we query the CPU SKU from
host capabilities XML. Neither of these is secure, however, so this
behaviour is restricted.
Reviewed-by: Cole Robinson <crobinso@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
The VMSA files contain the expected CPU register state for the VM. Their
content varies based on a few pieces of the stack
- AMD CPU architectural initial state
- KVM hypervisor VM CPU initialization
- QEMU userspace VM CPU initialization
- AMD CPU SKU (family/model/stepping)
The first three pieces of information we can obtain through code
inspection. The last piece of information we can take on the command
line. This allows a user to validate a SEV-ES guest merely by providing
the CPU SKU information, using --cpu-family, --cpu-model,
--cpu-stepping. This avoids the need to obtain or construct VMSA files
directly.
Reviewed-by: Cole Robinson <crobinso@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
With the SEV-ES policy the VMSA state of each vCPU must be included in
the measured data. The VMSA state can be generated using the 'sevctl'
tool, by telling it a QEMU VMSA is required, and passing the hypevisor's
CPU SKU (family, model, stepping).
Reviewed-by: Cole Robinson <crobinso@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
When connected to libvirt we can validate that the guest configuration
has the kernel hashes property enabled, otherwise including the kernel
GUID table in our expected measurements is not likely to match the
actual measurement.
When running locally we can also automatically detect the kernel/initrd
paths, along with the cmdline string from the XML.
Reviewed-by: Cole Robinson <crobinso@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
When doing direct kernel boot we need to include the kernel, initrd and
cmdline in the measurement.
Reviewed-by: Cole Robinson <crobinso@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Accept information about a connection to libvirt and a guest on the
command line. Talk to libvirt to obtain the running guest state and
automatically detect as much configuration as possible.
It will refuse to use a libvirt connection that is thought to be local
to the current machine, as running this tool on the hypervisor itself is
not considered secure. This can be overridden using the --insecure flag.
When querying the guest, it will also analyse the XML configuration in
an attempt to detect any options that are liable to be mistakes. For
example the NVRAM being measured should not have a persistent varstore.
Reviewed-by: Cole Robinson <crobinso@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
The virt-qemu-sev-validate program will compare a reported SEV/SEV-ES
domain launch measurement, to a computed launch measurement. This
determines whether the domain has been tampered with during launch.
This initial implementation requires all inputs to be provided
explicitly, and as such can run completely offline, without any
connection to libvirt.
The tool is placed in the libvirt-client-qemu sub-RPM since it is
specific to the QEMU driver.
Reviewed-by: Cole Robinson <crobinso@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Allow users to request validation of the storage volume XML. Add new
flag and virsh support.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Jonathon Jongsma <jjongsma@redhat.com>
The node device APIs which get XML from the user don't yet support XML
validation flags. Introduce virNodeDeviceCreateXMLFlags and
virNodeDeviceDefineXMLFlags with the appropriate flags and add virsh
support for the new flags.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Jonathon Jongsma <jjongsma@redhat.com>
The original patches adding the functionality neglected to add any form
of documentation for the stats fields returned for this group.
The stats are directly converted from qemu's 'query-stats(-schema)' QMP
command without any further interpretation. The 'query-stats-schema' has
the following disclaimer:
Note: runtime-collected statistics and their names fall outside QEMU's usual
deprecation policies. QEMU will try to keep the set of available data
stable, together with their names, but will not guarantee stability
at all costs; the same is true of providers that source statistics
externally, e.g. from Linux. For example, if the same value is being
tracked with different names on different architectures or by different
providers, one of them might be renamed. A statistic might go away if
an algorithm is changed or some code is removed; changing a default
might cause previously useful statistics to always report 0. Such
changes, however, are expected to be rare.
Since libvirt is not doing any form of conversion of the stats we can't
meaningfully document any of the returned fields. At the same time we
can't even meaningfully provide any form of API stability for the field
names.
Modify the documentation for the 'VIR_DOMAIN_STATS_VM' group both in the
API docs and in the virsh man page to reflect that and disclaim any form
of stability guarantees we provide normally.
Fixes: 8c9e3dae14
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
This patch adds a new worker qemuDomainGetStatsVm which reports the
stats returned by "query-stats" via qemuMonitorQueryStats for the VM
target.
Signed-off-by: Amneesh Singh <natto@weirdnatto.in>
The source_root() method is deprecated in 0.56.0 and we're
recommended to use project_source_root() instead.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
This option can be used as a shortcut for creating a single XML with
just a CPU model name and no features:
$ virsh hypervisor-cpu-baseline --model Skylake-Server
<cpu mode='custom' match='exact'>
<model fallback='forbid'>Skylake-Server</model>
<feature policy='disable' name='avx512f'/>
<feature policy='disable' name='avx512dq'/>
<feature policy='disable' name='clwb'/>
<feature policy='disable' name='avx512cd'/>
<feature policy='disable' name='avx512bw'/>
<feature policy='disable' name='avx512vl'/>
<feature policy='disable' name='pku'/>
</cpu>
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Libvirt provides QMP passthrough APIs for the QEMU driver and these are
exposed in virsh. It is not especially pleasant, however, using the raw
QMP JSON syntax. QEMU has a tool 'qmp-shell' which can speak QMP and
exposes a human friendly interactive shell. It is not possible to use
this with libvirt managed guest, however, since only one client can
attach to the QMP socket at any point in time. While it would be
possible to configure a second QMP socket for a VM, it may not be
an known requirement at the time the guest is provisioned.
The virt-qmp-proxy tool aims to solve this problem. It opens a UNIX
socket and listens for incoming client connections, speaking QMP on
the connected socket. It will forward any QMP commands received onto
the running libvirt QEMU guest, and forward any replies back to the
QMP client. It will also forward back events.
$ virsh start demo
$ virt-qmp-proxy demo demo.qmp &
$ qmp-shell demo.qmp
Welcome to the QMP low-level shell!
Connected to QEMU 6.2.0
(QEMU) query-kvm
{
"return": {
"enabled": true,
"present": true
}
}
Note this tool of course has the same risks as the raw libvirt
QMP passthrough. It is safe to run query commands to fetch information
but commands which change the QEMU state risk disrupting libvirt's
management of QEMU, potentially resulting in data loss/corruption in
the worst case. Any use of this tool will cause the guest to be marked
as tainted as an warning that it could be in an unexpected state.
Since this tool introduces a python dependency it is not desirable
to include it in any of the existing RPMs in libvirt. This tool is
also QEMU specific, so isn't appropriate to bundle with the generic
tools. Thus a new RPM is introduced 'libvirt-clients-qemu', to
contain additional QEMU specific tools, with extra external deps.
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Use virXMLParseStringCtxt instead of virXMLParseString since the code
requires a XPath context anyways.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Add UNDEFINE_TPM and UNDEFINE_KEEP_TPM flags to qemuDomainUndefineFlags()
API and --tpm and --keep-tpm to 'virsh undefine'. Pass the
virDomainUndefineFlagsValues via qemuDomainRemoveInactive()
from qemuDomainUndefineFlags() all the way down to
qemuTPMEmulatorCleanupHost() and delete TPM storage there considering that
the UNDEFINE_TPM flag has priority over the persistent_state attribute
from the domain XML. Pass 0 in all other API call sites to
qemuDomainRemoveInactive() for now.
Signed-off-by: Stefan Berger <stefanb@linux.ibm.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
After some debugging and discussion with systemd team it turns out we
are misusing the ordering in libvirt-guests.service. That happened
because we want to support both monolithic and modular daemon setups and
on top of that we also want to support socket activation and services
without socket activation. Unfortunately this is impossible to express
in the unit file because of how transactions are handled in systemd when
dependencies are resolved and multiple actions (jobs) are queued. For
explanation from Michal Sekletar see comment #7 in the BZ this patch is
fixing:
https://bugzilla.redhat.com/show_bug.cgi?id=1964855#c7
In order to support all the scenarios this patch also amends the
manpages so that users that are changing the default can also read how
to correct the dependency ordering in libvirt-guests unit file.
Ideally we would also keep the existing configuration during upgrade,
but due to our huge support matrix this seems hardly feasible as it
could introduce even more problems.
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
The sheepdog project is unmaintained, with last commit in 2018 and
numerous unanswered issues reported.
Remove the libvirt storage driver support for it to follow the removal
of the client support in qemu.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Claudio Fontana <cfontana@suse.de>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
When commit bac6b266fb added this "functionality" this was the only
naming I could think of, but after discussion with Dan we found the name
'null' fits a bit better, so change it before we make a release with the
old name.
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
This represents an interface connected to a VMWare Distributed Switch,
previously obscured as a dummy interface.
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
Reviewed-by: Reviewed-by: Ján Tomko <jtomko@redhat.com>
'cmdQemuMonitorCommandQMPWrap' is checking whether the user provided
string is not valid JSON to avoid wrapping it. In cases where it's not
JSON we ignore the error and add the wrapper.
If the caller then reports a different non-libvirt error the error from
the JSON parsing would be printed as well. Reset errors we ignore:
# virsh qemu-monitor-command cd --pass-fds a asdf
error: Unable to parse FD number 'a'
error: internal error: cannot parse json asdf: lexical error: invalid char in json text.
asdf
(right here) ------^
In the above case 'asdf' is not valid JSON, but the code did wrap it
into '{"execute":"asdf"}', the only problem is the argument for
--pass-fds.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Martin Kletzander <mkletzan@redhat.com>
Historically, the dumpxml command reject any unknown arguments,
for instance:
virsh dumpxml fedora xxx
However, after v8.5.0-rc1~31 the second argument ('xxx') is
treated as an XPath, but it's not that clearly visible.
Therefore, require the --xpath switch, like this:
virsh dumpxml fedora --xpath xxx
Yes, this breaks already released virsh, but I think we can argue
that the pool of users of this particular function is very small.
We also document the argument being mandatory:
dumpxml [--inactive] [--security-info] [--update-cpu] [--migratable]
[--xpath EXPRESSION] [--wrap] domain
The sooner we do this change, the better.
The same applies for other *dumpxml functions (net-dumpxml,
pool-dumpxml, vol-dumpxl to name a few).
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=2103524
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
These wrapper functions were used to adapt the virObjectUnref() function
signature for different callbacks. But in commit 0d184072, the
virObjectUnref() function was changed to return a void instead of a
bool, so these adapters are no longer necessary.
Signed-off-by: Jonathon Jongsma <jjongsma@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Our man page already documents that iothreadset has --config
argument. Well, it doesn't really. Normally, I'd just fix the man
page, but with recent work on the API it's possible to tweak
values for inactive XML too. Therefore, implement the --config
argument for the command.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Add a simple command to drive the new 'virAdmConnectSetDaemonTimeout'
API.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
To match the XML roots domainCapabilities and storagepoolCapabilities,
the wildcards should be *domainCap* and *storagepoolCap*.
Fixes: 7b0e2e4a55
Signed-off-by: Han Han <hhan@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
While you can chain the virsh output up to a later 'xmllint' or 'xpath'
command, integrating it into virsh avoids needs for installing extra
binaries which we've often found to be missing on production installs
of libvirt. It also gives better response if the initial virsh command
hits an error, as you don't get an aborted pipeline.
$ virsh pool-dumpxml --xpath //permissions default
<permissions>
<mode>0711</mode>
<owner>1000</owner>
<group>1000</group>
<label>unconfined_u:object_r:svirt_home_t:s0</label>
</permissions>
If multiple nodes match, they are emitted individually:
$ virsh dumpxml --xpath '//devices/*/address[@type="pci"]' --wrap demo
<address type="pci" domain="0x0000" bus="0x05" slot="0x00" function="0x0"/>
<address type="pci" domain="0x0000" bus="0x03" slot="0x00" function="0x0"/>
...snip...
<address type="pci" domain="0x0000" bus="0x00" slot="0x02" function="0x0" multifunction="on"/>
<address type="pci" domain="0x0000" bus="0x07" slot="0x00" function="0x0"/>
but if intending to post-process the output further, the results
can be wrapped in a parent node
$ virsh dumpxml --xpath '//devices/*/address[@type="pci"]' --wrap demo
<nodes>
<address type="pci" domain="0x0000" bus="0x05" slot="0x00" function="0x0"/>
<address type="pci" domain="0x0000" bus="0x03" slot="0x00" function="0x0"/>
...snip...
<address type="pci" domain="0x0000" bus="0x00" slot="0x02" function="0x0" multifunction="on"/>
<address type="pci" domain="0x0000" bus="0x07" slot="0x00" function="0x0"/>
</nodes>
Fixes https://gitlab.com/libvirt/libvirt/-/issues/244
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
The trivial case of fully printing an XML document is boring, but
this helper does more by allowing an XPath expression to be given.
It will then print just the subset of nodes which match the
expression. It either print each match as a standalone XML doc
or can put them into one new XML doc wrapped woith <nodes>...</nodes>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Since virsh implements a wrapper over virDomainSetIOThreadParams()
(command iothreadset) let's wire up new typed parameters there too.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
Virsh has iothreadset command which allows setting various
attributes of IOThreads. However, when the command is called
without any arguments (besides domain and IOThread IDs), then
@params stays NULL and is passed to virDomainSetIOThreadParams()
which produces rather user unfriendly error message:
error: params in virDomainSetIOThreadParams must not be NULL
Introduce a check and produce better error message.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Claudio Fontana <cfontana@suse.de>
This new "post-copy failed" reason for the running state will be used on
the destination host when post-copy migration fails while the domain is
already running there.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
Make sure that more users understand that without HW virtualization you cannot
have KVM working.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=2086677
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
There are some tools that convert hostname to lowercase before
resolving it (e.g. ssh). In a way it makes sense because DNS is
case insensitive and in case of ssh the lowercase version is then
used to find matching record in its config file. However, our NSS
module performs case sensitive comparison, which makes it useless
with ssh. Just consider a machine named FooBar.
Therefore, switch to case insensitive string comparison.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1777873
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Martin Kletzander <mkletzan@redhat.com>
This implementation reports only Unix bus address using the URI format
proposed in https://gitlab.freedesktop.org/dbus/dbus/-/issues/348.
We prefer a URI form over the D-Bus address form, since all other
display protocols use a URI, allowing to distinguish between protocols
and making client implementation simpler.
Other transports (for example TCP) are not yet handled.
The client is assumed to know what to lookup on the bus (the bus name,
path & interface of the VM, eventually matching its UUID)
P2P mode doesn't report any available URI.
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Add these XML formats validation in manpage or script:
cpu, domainbackup, domaincaps, domaincheckpoint, networkport,
storagepoolcaps.
Signed-off-by: Han Han <hhan@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
macOS libraries don't support symbol versioning, so the only
result that we achieve by passing additional flags to the linker
is a bunch of messages like
ld: warning: ignoring file .../libvirt/build/src/libvirt.syms,
building for macOS-x86_64 but attempting to link with file built
for unknown-unsupported file format ( 0x23 0x20 0x57 0x41 ... )
being produced during the build.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
This ensures variable names and the overall structure of the
code setting and using them is consistent. It will also make
upcoming changes less disruptive.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
In a recent commit I've attempted to rewrite the XML generator to use
virXMLFormatElement instead of manual steps. Unfortunately the commit
had multiple problems resulting in a garbled XML:
1) in certain cases the wrong buffer was used resulting in misplaced
snippets
2) the child element buffer was improperly set up so sub-elements were
not indented
This resulted in following XML being generated:
$ virsh blockcopy cd vda /tmp/test.copy --raw --print-xml
type='file''/tmp/test.copy'/>
<driver type='raw'/>
<disk>
<source file=</disk>
To fix this we'll generate the '<source>' element in one go and use the
proper buffer for it and other places.
Fixes: 1cd95f858a
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=2078274
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Useful for knowing how to construct the XML and debugging.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
When the setup of TLS certs was originally split out of
'docs/remote.html' ( df99aa311a ) links refering to it were not
fixed.
Adjust them to point to the correct document.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
