The virConnectOpenInternal method opens the libvirt client
config file and uses it to resolve things like URI aliases.
There may be driver specific things that are useful to
store in the config file too, so rather than have them
re-parse the same file, pass the virConfPtr down to the
drivers.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
qemuProcessStart does not unset the infrastructure that retrieves errors
from the qemu log file in case of migration. As this wasn't handled
properly in qemuDomainSaveImageStartVM we kept the logging context/fd
open for the lifetime of the VM rather than closing it after it's not
needed.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1325080
Similarly to the domain definition validator add a device validator. The
change to the prototype of the domain validator is necessary as
virDomainDeviceInfoIterateInternal requires a non-const pointer.
Until now we weren't able to add checks that would reject configuration
once accepted by the parser. This patch adds a new callback and
infrastructure to add such checks. In this patch all the places where
rejecting a now-invalid configuration wouldn't be a good idea are marked
with a new parser flag.
Hand-entering indexes for 20 PCI controllers is not as tedious as
manually determining and entering their PCI addresses, but it's still
annoying, and the algorithm for determining the proper index is
incredibly simple (in all cases except one) - just pick the lowest
unused index.
The one exception is USB2 controllers because multiple controllers in
the same group have the same index. For these we look to see if 1) the
most recently added USB controller is also a USB2 controller, and 2)
the group *that* controller belongs to doesn't yet have a controller
of the exact model we're just now adding - if both are true, the new
controller gets the same index, but in all other cases we just assign
the lowest unused index.
With this patch in place and combined with the automatic PCI address
assignment, we can define a PCIe switch with several ports like this:
<controller type='pci' model='pcie-root-port'/>
<controller type='pci' model='pcie-switch-upstream-port'/>
<controller type='pci' model='pcie-switch-downstream-port'/>
<controller type='pci' model='pcie-switch-downstream-port'/>
<controller type='pci' model='pcie-switch-downstream-port'/>
<controller type='pci' model='pcie-switch-downstream-port'/>
<controller type='pci' model='pcie-switch-downstream-port'/>
...
These will each get a unique index, and PCI addresses that connect
them together appropriately with no pesky numbers required.
The libvirt internal bits can be changed for disks that don't otherwise
support changing media. Remove the switch statement and allow changes of
non-source data for all disks.
qemuDomainChangeDiskLive rolled back few changes to the disk definition
if changing of the media failed. This can be avoided by moving some code
around.
If the stats for a block device can't be acquired from qemu we've
fallen back to loading them from the file on the disk in libvirt.
If qemu is not cooperating due to being stuck on an inaccessible NFS
share we would then attempt to read the files and get stuck too with
the VM object locked. All other APIs would eventually get stuck waiting
on the VM lock.
Avoid this problem by skipping the block stats if the VM is online but
the monitor did not provide any stats.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1337073
Some Intel processor families (e.g. the Intel Xeon processor E5 v3
family) introduced some RDT (Resource Director Technology) features
to monitor or control shared resource. Among these features, MBM
(Memory Bandwidth Monitoring), which is build on the CMT (Cache
Monitoring Technology) infrastructure, provides OS/VMM a way to
monitor bandwidth from one level of cache to another.
With current perf framework, this patch adds support to perf event
for MBM.
Signed-off-by: Qiaowei Ren <qiaowei.ren@intel.com>
hotplug APIs with the AFFECT_CONFIG flag are essentially replicating
'insert <device> into XML document, and redefine XML'. Thinking of
it this way, it's natural that we call virDomainDefPostParse after
manually editing the XML here.
Not only does doing so allow us to drop a bunch of open coded calls
to qemuDomainAssignAddresses, but it also means we are going through
the standard channels for XML validation and potentially catching
errors in user submitted XML.
This wires up qemuDomainAssignAddresses into the new
virDomainDefAssignAddressesCallback, so it's always triggered
via virDomainDefPostParse. We are essentially doing this already
with open coded calls sprinkled about.
qemu argv parse output changes slightly since previously it wasn't
hitting qemuDomainAssignAddresses.
Extract the relevant parts of the existing checker and reuse them for
blockcopy since copying to a non-block device creates an invalid
configuration.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1209802
Similar to the qemuDomainSecretDiskPrepare, generate the secret
for the Hostdev's prior to call qemuProcessLaunch which calls
qemuBuildCommandLine. Additionally, since the secret is not longer
added as part of building the command, the hotplug code will need
to make the call to add the secret in the hostdevPriv.
Since this then is the last requirement to pass a virConnectPtr
to qemuBuildCommandLine, we now can remove that as part of these
changes. That removal has cascading effects through various callers.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Rather than needing to pass the conn parameter to various command
line building API's, add qemuDomainSecretPrepare just prior to the
qemuProcessLaunch which calls qemuBuilCommandLine. The function
must be called after qemuProcessPrepareHost since it's expected
to eventually need the domain masterKey generated during the prepare
host call. Additionally, future patches may require device aliases
(assigned during the prepare domain call) in order to associate
the secret objects.
The qemuDomainSecretDestroy is called after the qemuProcessLaunch
finishes in order to clear and free memory used by the secrets
that were recently prepared, so they are not kept around in memory
too long.
Placing the setup here is beneficial for future patches which will
need the domain masterKey in order to generate an encrypted secret
along with an initialization vector to be saved and passed (since
the masterKey shouldn't be passed around).
Finally, since the secret is not added during command line build,
the hotplug code will need to get the secret into the private disk data.
Signed-off-by: John Ferlan <jferlan@redhat.com>
When the domain definition describes a machine with NUMA, setting the
maximum vCPU count via the API might lead to an invalid config.
Add a check that will forbid this until we add more advanced cpu config
capabilities.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1327499
If the domain name is long enough, the timestamp can prolong the
filename for automatic coredump to more than the filesystem's limit.
Simply shorten it like we do in other places. The timestamp helps with
the unification, but having the ID in the name won't hurt.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1289363
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
This function - in contrast with qemuBuildCommandLine - merely
constructs our internal command representation of a domain. This
is then later compared against expected output. Or, this function
is used also in virConnectDomainXMLToNative(). But due to a copy
paste error this function, just like its image - has @forceFips
argument that if enabled forces FIPS, otherwise mimics FIPS state
in the host. If FIPS is enabled or forced the generated command
line is different to state in which FIPS is disabled. Problem is,
while this could be desired in the virConnectDomainXMLToNative()
case, this is undesirable in the test suite as it will produce
unpredicted results.
Solution to this is to rename argument to @enableFips to
specifically tell whether we expect command line to be build in
either of fashions and make virConnectDomainXMLToNative()
implementation fetch FIPS state and pass it to
qemuProcessCreatePretendCmd().
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
The values are currently limited to LLONG_MAX which causes some
problems. QEMU conveniently changed their maximum to 1e15 (1 PB) which
is enough for some time and we need to adapt to that so that we don't
throw "Unknown error" messages. Strictly limiting these values actually
fixes some corner case values (off-by-one checks in QEMU probably).
Since values out of the new specified range do not overflow anything,
change the type of error as well.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1317531
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
This an ubuntu/debian packaging convention. At one point it may have
been an actually different binary, but at least as of ubuntu precise
(the oldest supported ubuntu distro, released april 2012) kvm-img is
just a symlink to qemu-img for back compat.
I think it's safe to drop support for it
The common idiom in the driver API implementations is roughly:
- ACL check
- BeginJob (if needed)
- AgentAvailable (if needed)
- !IsActive
A few calls had an extra !IsActive before BeginJob, which doesn't
seem to serve much use. Drop them
Migration API allows to specify a destination domain configuration.
Offline domain has only inactive XML and it is replaced by configuration
specified using VIR_MIGRATE_PARAM_DEST_XML param. In case of live
migration VIR_MIGRATE_PARAM_DEST_XML param is applied for active XML.
This commit introduces the new VIR_MIGRATE_PARAM_PERSIST_XML param
that can be used within live migration to replace persistent/inactive
configuration.
Required for: https://bugzilla.redhat.com/show_bug.cgi?id=835300
@flags have a valid modification impact only after calling
virDomainObjUpdateModificationImpact. virDomainObjGetOneDef calls it but
doesn't update them in the caller.
Even though we have the machine locked throughout whole APIs we
are querying/modifying domain internal state. We should grab a
job whilst doing that.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
