This function is going to make decisions based on the features
set per each driver. For that we need the virDomainXMLOption
object.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Let's move all the virAsprintf()-s into separate functions for
better structure of the code. Later, when somebody wants to
generate a device alias, all they need is to expose the function.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
We have a special function for assigning aliases to RNG devices.
Use that instead of plain virAsprintf().
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
It looks like the error message was copied from virsh, because
that's where we have @ctl. Nevertheless, it's @flags which is
invalid, not @ctl.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Back in the times of using 'pci_del', unplugging a device without
a PCI address was not wired up.
After completely removing support for qemu without QEMU_CAPS_DEVICE,
aliases are used to uniquely identify devices in all cases.
Remove the pointless validation of data that was already present
in the domain definition.
There are two more cases where we set an S390/CCW/PCI address
type based on the machine type.
Reuse qemuDomainEnsureVirtioAddress to reduce repetition.
Split out the common code responsible for reserving/assigning
PCI/CCW addresses for virtio disks into a helper function
for reuse by other virtio devices.
We pass the source.file to qemuCheckCCWS390AddressSupport for
the purpose of reporting an error message without actually checking
that the rng device is of type VIR_DOMAIN_RNG_BACKEND_RANDOM.
Change it to a hardcoded "rng" string, which also avoids
referring to the device by a host-side attribute.
There is one limitation for using this API, when the guest is started
with all actions set to "destroy" we put "-no-reboot" on the QEMU
command line. That cannot be changed while QEMU is running and
the QEMU process is always terminated no matter what is configured
for any action.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1460677
Reviewed-by: John Ferlan <jferlan@redhat.com>
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
We need to send allowReboot in the migration cookie to ensure the same
behavior of the virDomainSetLifecycleAction() API on the destination.
Consider this scenario:
1. On the source the domain is started with:
<on_poweroff>destroy</on_poweroff>
<on_reboot>restart</on_reboot>
<on_crash>destroy</on_crash>
2. User calls an API to set "destroy" for <on_reboot>:
<on_poweroff>destroy</on_poweroff>
<on_reboot>destroy</on_reboot>
<on_crash>destroy</on_crash>
3. The guest is migrated to a different host
4a. Without the allowReboot in the migration cookie the QEMU
process on destination would be started with -no-reboot
which would prevent using the virDomainSetLifecycleAction() API
for the rest of the guest lifetime.
4b. With the allowReboot in the migration cookie the QEMU process
on destination is started without -no-reboot like it was started
on the source host and the virDomainSetLifecycleAction() API
continues to work.
The following patch adds a QEMU implementation of the
virDomainSetLifecycleAction() API and that implementation disallows
using the API if all actions are set to "destroy" because we add
"-no-reboot" on the QEMU command line. Changing the lifecycle action
is in this case pointless because the QEMU process is always terminated.
Reviewed-by: John Ferlan <jferlan@redhat.com>
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
This will be used later on in implementation of new API
virDomainSetLifecycleAction(). In order to use it, we need to store
the value in status XML to not lose the information if libvirtd is
restarted.
If some guest was started by old libvirt where it was not possible
to change the lifecycle action for running guest, we can safely
detect it based on the current actions from the status XML.
Reviewed-by: John Ferlan <jferlan@redhat.com>
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Extract the required data inside a function instead of passing it
all as arguments.
Reviewed-by: John Ferlan <jferlan@redhat.com>
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
There is no need to have two different enums where one has the same
values as the other one with some additions.
Currently for on_poweroff and on_reboot we allow only subset of actions
that are allowed for on_crash. This was covered in parse time using
two different enums. Now to make sure that we don't allow setting
actions that are not supported we need to check it while validating
domain config.
Reviewed-by: John Ferlan <jferlan@redhat.com>
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Commit v3.8.0-95-gfd885a06a dropped nmodels parameter from several APIs
in src/cpu/cpu.h, but failed to update all callers.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
If we find ourselves in the situation that the 'add' uevent has been
fired earlier than the sysfs tree for a device was created, we should
use the best-effort approach and give kernel some predetermined amount
of time, thus waiting for the attributes to be ready rather than
discarding the device from our device list forever. If those don't appear
in the given time frame, we need to move on, since libvirt can't wait
indefinitely.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1463285
Signed-off-by: Erik Skultety <eskultet@redhat.com>
Since we have a number of places where we workaround timing issues with
devices, attributes (files in general) not being available at the time
of processing them by calling usleep in a loop for a fixed number of
tries, we could as well have a utility function that would do that.
Therefore we won't have to duplicate this ugly workaround even more.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
Adjust udevEventHandleThread to be a proper thread routine running in an
infinite loop handling devices. The handler thread pulls all available
data from the udev monitor and only then waits until a wakeup signal for
new incoming data has been emitted by udevEventHandleCallback.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
This patch splits udevEventHandleCallback in two (introduces
udevEventHandleThread) in order to be later able to refactor the latter
to actually become a normal thread which will wait some time for the
kernel to create the whole sysfs tree for a device as we cannot do that
in the event loop directly.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
udevSetupSystemDev only needs the udev data lock to be locked because of
calling udevGetDMIData which accesses some protected structure members,
but it can do that on its own just fine, no need to hold the lock the
whole time.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
The driver locks are unnecessary here, since currently the cleanup is
only called from the main daemon thread, so we can't race here. Moreover
@devs and @privateData are self-lockable objects, so no problem there
either.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
Since there's going to be a worker thread which needs to have some data
protected by a lock, the whole code would just simply get unnecessary
complex, since two sets of locks would be necessary, driver lock (for
udev monitor and event handle) and a mutex protecting thread-local data.
Given the future thread will need to access the udev monitor socket as
well, why not protect everything with a single lock, even better, by
converting the driver's private data to a lockable object, we get the
automatic object disposal feature for free.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
We need to perform a sanity check on the udev monitor before every
use so that we know nothing has changed in the meantime. The reason for
moving the code to a separate helper is to enhance readability and shift
the focus on the important stuff within the udevEventHandleCallback
handler.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
Even though hal doesn't make use of it, the privileged flag is related
to the daemon/driver rather than the backend actually used.
While at it, get rid of some tab indentation in the driver state struct.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
