The check was historically done only for _TYPE_VOLUME disks, but
refactors to allow _TYPE_VOLUME disks in the backing chain caused a
regression where we'd reject startupPolicy also for _TYPE_BLOCK disks
which historically worked well.
Fix it by using the 'virDomainDiskDefValidateStartupPolicy' helper and
use it only when the top level image is a _TYPE_VOLUME as in other cases
it was already validated. This also allows _TYPE_BLOCK volumes to use
startup policy.
Fixes: 37f01262ee
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=2095758
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Our startup policy checkers work only for local paths, so disk sources
such as NVMe, or vhost-user can't be used with startup policy.
Unfortunately the validation did not catch these cases. Fix it.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Move the code into 'virDomainDiskDefValidateStartupPolicy' which will be
later reused in the qemu driver.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Remove linebreak and mention the attribute name. Also prepare the error
messages for future by substituting the type of offending access.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Refactor the function to use modern XML formatting machinery.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Tested-by: Rohit Kumar <rohit.kumar3@nutanix.com>
This patch introduces the logic to format and parse remote NVRAM.
Update NVRAM element schema, and docs for supporting network backed
NVRAM. NVRAM backed over network would give the flexibility to start
the VM on any host without having to worry about where to get the latest
nvram image.
<nvram type='network'>
<source protocol='iscsi' name='iqn.2013-07.com.example:iscsi-nopool/0'>
<host name='example.com' port='6000'/>
</source>
</nvram>
or
<nvram type='file'>
<source file='/var/lib/libvirt/nvram/guest_VARS.fd'/>
</nvram>
In the qemu driver we will support the new definition only with qemu's
supporting -blockdev.
Signed-off-by: Prerna Saxena <prerna.saxena@nutanix.com>
Signed-off-by: Florian Schmidt <flosch@nutanix.com>
Signed-off-by: Rohit Kumar <rohit.kumar3@nutanix.com>
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Tested-by: Rohit Kumar <rohit.kumar3@nutanix.com>
Introduce virDomainLoaderDefFormatNvram and extract the code to it so
that it's self-contained in upcoming patches adding more complex logic.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Tested-by: Rohit Kumar <rohit.kumar3@nutanix.com>
Prepare for network backed nvram by refusing the reset of nvram on boot
and don't check whether it exists. We will not support filling it from a
template.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Tested-by: Rohit Kumar <rohit.kumar3@nutanix.com>
Setup all fields for use with -blockdev.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Tested-by: Rohit Kumar <rohit.kumar3@nutanix.com>
We don't really use it besides when starting up the VM so when
reconnecting this step is totally pointless.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Tested-by: Rohit Kumar <rohit.kumar3@nutanix.com>
Use the designated helpers for virStorageSource instead using the
file-based ones with a check.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Tested-by: Rohit Kumar <rohit.kumar3@nutanix.com>
Since we now have a full virStorageSource for storing the nvram path we
don't need the extra dance of transferring the data into the 'pflash1'
variable which was an intermediary solution to use -blockdev.
For now we keep it functionally identical to the previous impl.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Tested-by: Rohit Kumar <rohit.kumar3@nutanix.com>
Currently, libvirt allows only local filepaths to specify the location
of the 'nvram' image. Changing it to virStorageSource type will allow
supporting remote storage for nvram.
Signed-off-by: Prerna Saxena <prerna.saxena@nutanix.com>
Signed-off-by: Florian Schmidt <flosch@nutanix.com>
Signed-off-by: Rohit Kumar <rohit.kumar3@nutanix.com>
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Tested-by: Rohit Kumar <rohit.kumar3@nutanix.com>
Extract the internals of qemuDomainPrepareStorageSourceBlockdev into
qemuDomainPrepareStorageSourceBlockdevNodename so that we can reuse it
when instantiating the virStorageSource for pflash backing.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Tested-by: Rohit Kumar <rohit.kumar3@nutanix.com>
This is a partial revert of 87a43a907f
The change to use g_clear_pointer() in more places was accidentally
applied to cases involving vir_g_source_unref().
In some cases, the ordering of g_source_destroy() and
vir_g_source_unref() was reversed, which resulted in the source being
marked as destroyed, after it is already unreferenced. This
use-after-free case might work in many cases, but with versions of
glib older than 2.64.0 it may defer unref to run within the main
thread to avoid a race condition, which creates a large distance
between the g_source_unref() and g_source_destroy().
In some cases, the call to vir_g_source_unref() was replaced with a
second call to g_source_destroy(), leading to a memory leak or worse.
In our experience, the symptoms were that use of libvirt-python became
slower over time, with OpenStack nova-compute initially taking around
one second to periodically query the host PCI devices, and within an
hour it was taking over a minute to complete the same operation, until
it is was eventually running this query back-to-back, resulting in the
nova-compute process consuming 100% of one CPU thread, losing its
RabbitMQ connection frequently, and showing up as down to the control
plane.
Signed-off-by: Mark Mielke <mark.mielke@gmail.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
When creating a TAP interface we can end up with multiple FDs,
each representing one queue. However, these FDs must be
relabelled as they are then passed to QEMU. In case of
qemuBuildInterfaceConnect() we allocate the array for the FDs and
then let function corresponding to the <interface/> type to fill
the array with FDs. When any of the functions meets an error,
it's also responsible for closing previously opened FDs. However,
the functions take a shortcut: iterate through each member of the
array and close it (if it's non-negative). This assumes that the
array is initialized to negative values, which use to be the case
before rewrite in v8.4.0-rc1~170 but after it it's no longer the
case. Subsequently, "random" FDs are closed (okay, not that
random since the array is allocated via g_new0(), but hey - FD 0
is still valid FD and might be valuable, actually).
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=2075383#c18
Fixes: 7a38d3946b
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
For some types of SRIOV interfaces we create a temporary file
where the state of the interface is saved before we start
modifying it. The file is used then to restore the original
configuration when the interface is no longer associated with any
guest. For writing the file virFileWriteStr() is used. However,
it's given wrong argument: the last argument is supposed to be
mode to create the file with but virNetDevSaveNetConfig() passes
open(2) flags (O_CREAT|O_TRUNC|O_WRONLY). We need the file to be
writable and readable by root only (0600). Therefore, pass that
mode instead of gibberish.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
Commit v7.1.0-136-g6a6d6bb520 refactored virProcessSetMaxMemLock by
moving its part into a new virProcessSetLimit, but lost "return -1" on
error.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Since the main-loop and iothread classes are derived from the
same class (EventLoopBaseClass) we don't need new capability and
can use QEMU_CAPS_IOTHREAD_THREAD_POOL_MAX directly to check
whether QEMU's capable of setting defaultiothread pool size.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
As of v7.0.0-877-g70ac26b9e5 QEMU exposes its default event loop
for devices with no IOThread assigned as an QMP object. In the
very next commit (v7.0.0-878-g71ad4713cc) it was extended for
thread-pool-min and thread-pool-max attributes. Expose them under
new <defaultiothread/> element.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@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>
Introduced in previous commit, QEMU driver needs to be taught how
to set VIR_DOMAIN_IOTHREAD_THREAD_POOL_MIN and
VIR_DOMAIN_IOTHREAD_THREAD_POOL_MAX parameters on given IOThread.
Fortunately, this is fairly trivial to do and since these two
parameters are exposed in domain XML too the update of inactive
XML can be wired up too.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
Our public API offers virDomainSetIOThreadParams() function which
allows users to set various aspects of IOThreads. Introduce two
new typed parameters: VIR_DOMAIN_IOTHREAD_THREAD_POOL_MIN and
VIR_DOMAIN_IOTHREAD_THREAD_POOL_MAX which will allow users to
modify the thread-pool-min and thread-pool-max attributes of an
iothread.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
Now that we have a capability that reflects whether QEMU is
capable of setting iothread pool size, let's introduce a
validator check to make sure users are not trying to use this
feature with QEMU that doesn't support it.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
This capability reflects whether QEMU allows setting
thread-pool-min and thread-pool-max attributes on iothread
object. Since both attributes were introduced in the same commit
(v7.0.0-878-g71ad4713cc) and can't exist independently of each
other we can stick with one capability covering both of them.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
