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qemu: process: Ignore 'RESET' event during startup

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In cases when we are adding a <transient/> disk with sharing backend
(and thus hotplugging it) we need to re-initialize ACPI tables so that
the VM boots from the correct device.

This has a side-effect of emitting the RESET event and forwarding it to
the clients which is not correct.

Fix this by ignoring RESET events during startup of the VM.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
This commit is contained in:
Peter Krempa 2021-07-20 09:28:51 +02:00
parent 526cff4f03
commit 9eef395fcc
1 changed files with 14 additions and 1 deletions
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15
src/qemu/qemu_process.c
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@ -429,12 +429,24 @@ qemuProcessHandleReset(qemuMonitor *mon G_GNUC_UNUSED,
void *opaque)
{
virQEMUDriver *driver = opaque;
virObjectEvent *event;
virObjectEvent *event = NULL;
qemuDomainObjPrivate *priv;
g_autoptr(virQEMUDriverConfig) cfg = virQEMUDriverGetConfig(driver);
virDomainState state;
int reason;
virObjectLock(vm);
state = virDomainObjGetState(vm, &reason);
/* ignore reset events on VM startup. Libvirt in certain instances does a
* reset during startup so that the ACPI tables are re-generated */
if (state == VIR_DOMAIN_PAUSED &&
reason == VIR_DOMAIN_PAUSED_STARTING_UP) {
VIR_DEBUG("ignoring reset event during startup");
goto unlock;
}
event = virDomainEventRebootNewFromObj(vm);
priv = vm->privateData;
if (priv->agent)
@ -443,6 +455,7 @@ qemuProcessHandleReset(qemuMonitor *mon G_GNUC_UNUSED,
if (virDomainObjSave(vm, driver->xmlopt, cfg->stateDir) < 0)
VIR_WARN("Failed to save status on vm %s", vm->def->name);
unlock:
virObjectUnlock(vm);
virObjectEventStateQueue(driver->domainEventState, event);
}