On Tue, Jun 19, 2018 at 08:38:02 +0200, Michal Privoznik wrote:
There are two sets of functions here:
1) some functions talk on both monitor and agent monitor,
2) some functions only talk on agent monitor.
For functions from set 1) we need to use
qemuDomainObjBeginJobWithAgent() and for functions from set 2) we
need to use qemuDomainObjBeginAgentJob() only.
Signed-off-by: Michal Privoznik <mprivozn(a)redhat.com>
---
src/qemu/qemu_driver.c | 91 ++++++++++++++++++++++++++++++++------------------
1 file changed, 58 insertions(+), 33 deletions(-)
diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c
index 3abbe41895..cffd4c928a 100644
--- a/src/qemu/qemu_driver.c
+++ b/src/qemu/qemu_driver.c
@@ -1954,6 +1954,7 @@ static int qemuDomainShutdownFlags(virDomainPtr dom, unsigned int
flags)
bool useAgent = false, agentRequested, acpiRequested;
bool isReboot = false;
bool agentForced;
+ bool agentJob = false;
int agentFlag = QEMU_AGENT_SHUTDOWN_POWERDOWN;
virCheckFlags(VIR_DOMAIN_SHUTDOWN_ACPI_POWER_BTN |
@@ -1980,9 +1981,14 @@ static int qemuDomainShutdownFlags(virDomainPtr dom, unsigned int
flags)
if (virDomainShutdownFlagsEnsureACL(dom->conn, vm->def, flags) < 0)
goto cleanup;
- if (qemuDomainObjBeginJob(driver, vm, QEMU_JOB_MODIFY) < 0)
+ if ((!useAgent && qemuDomainObjBeginJob(driver, vm, QEMU_JOB_MODIFY) < 0)
||
+ (useAgent && qemuDomainObjBeginJobWithAgent(driver, vm,
+ QEMU_JOB_MODIFY,
+ QEMU_AGENT_JOB_MODIFY) < 0))
Looks a bit hard to parse, it would be easier to just call
qemuDomainObjBeginJobWithAgent:
qemuDomainAgentJob agentJob = QEMU_AGENT_JOB_NONE;
if (useAgent)
agentJob = QEMU_AGENT_JOB_MODIFY;
if (qemuDomainObjBeginJobWithAgent(driver, vm, QEMU_JOB_MODIFY,
agentJob) < 0)
goto cleanup;
Perhaps it would even make sense to document this usage if the caller
does not always need to talk to the agent.
@@ -2026,7 +2032,10 @@ static int
qemuDomainShutdownFlags(virDomainPtr dom, unsigned int flags)
}
endjob:
- qemuDomainObjEndJob(driver, vm);
+ if (agentJob)
+ qemuDomainObjEndJobWithAgent(driver, vm);
+ else
+ qemuDomainObjEndJob(driver, vm);
And this would still work even with the suggested changes.
cleanup:
virDomainObjEndAPI(&vm);
@@ -2049,6 +2058,7 @@ qemuDomainReboot(virDomainPtr dom, unsigned int flags)
bool useAgent = false, agentRequested, acpiRequested;
bool isReboot = true;
bool agentForced;
+ bool agentJob = false;
int agentFlag = QEMU_AGENT_SHUTDOWN_REBOOT;
virCheckFlags(VIR_DOMAIN_REBOOT_ACPI_POWER_BTN |
@@ -2075,9 +2085,14 @@ qemuDomainReboot(virDomainPtr dom, unsigned int flags)
if (virDomainRebootEnsureACL(dom->conn, vm->def, flags) < 0)
goto cleanup;
- if (qemuDomainObjBeginJob(driver, vm, QEMU_JOB_MODIFY) < 0)
+ if ((!useAgent && qemuDomainObjBeginJob(driver, vm, QEMU_JOB_MODIFY) < 0)
||
+ (useAgent && qemuDomainObjBeginJobWithAgent(driver, vm,
+ QEMU_JOB_MODIFY,
+ QEMU_AGENT_JOB_MODIFY) < 0))
The same pattern could be used here.
goto cleanup;
+ agentJob = useAgent;
+
agentForced = agentRequested && !acpiRequested;
if (!qemuDomainAgentAvailable(vm, agentForced)) {
if (agentForced)
@@ -2115,7 +2130,10 @@ qemuDomainReboot(virDomainPtr dom, unsigned int flags)
}
endjob:
- qemuDomainObjEndJob(driver, vm);
+ if (agentJob)
+ qemuDomainObjEndJobWithAgent(driver, vm);
+ else
+ qemuDomainObjEndJob(driver, vm);
cleanup:
virDomainObjEndAPI(&vm);
@@ -4949,6 +4967,7 @@ qemuDomainSetVcpusFlags(virDomainPtr dom,
virDomainDefPtr def;
virDomainDefPtr persistentDef;
bool hotpluggable = !!(flags & VIR_DOMAIN_VCPU_HOTPLUGGABLE);
+ bool useAgent = !!(flags & VIR_DOMAIN_VCPU_GUEST);
int ret = -1;
virCheckFlags(VIR_DOMAIN_AFFECT_LIVE |
@@ -4963,13 +4982,14 @@ qemuDomainSetVcpusFlags(virDomainPtr dom,
if (virDomainSetVcpusFlagsEnsureACL(dom->conn, vm->def, flags) < 0)
goto cleanup;
- if (qemuDomainObjBeginJob(driver, vm, QEMU_JOB_MODIFY) < 0)
+ if ((!useAgent && qemuDomainObjBeginJob(driver, vm, QEMU_JOB_MODIFY) < 0)
||
+ (useAgent && qemuDomainObjBeginAgentJob(driver, vm,
QEMU_AGENT_JOB_MODIFY) < 0))
goto cleanup;
And here.
if (virDomainObjGetDefs(vm, flags, &def, &persistentDef) < 0)
goto endjob;
- if (flags & VIR_DOMAIN_VCPU_GUEST)
+ if (useAgent)
ret = qemuDomainSetVcpusAgent(vm, nvcpus);
else if (flags & VIR_DOMAIN_VCPU_MAXIMUM)
ret = qemuDomainSetVcpusMax(driver, def, persistentDef, nvcpus);
@@ -4978,7 +4998,10 @@ qemuDomainSetVcpusFlags(virDomainPtr dom,
nvcpus, hotpluggable);
endjob:
- qemuDomainObjEndJob(driver, vm);
+ if (useAgent)
+ qemuDomainObjEndAgentJob(vm);
+ else
+ qemuDomainObjEndJob(driver, vm);
cleanup:
virDomainObjEndAPI(&vm);
@@ -5429,7 +5452,7 @@ qemuDomainGetVcpusFlags(virDomainPtr dom, unsigned int flags)
goto cleanup;
if (flags & VIR_DOMAIN_VCPU_GUEST) {
- if (qemuDomainObjBeginJob(driver, vm, QEMU_JOB_QUERY) < 0)
+ if (qemuDomainObjBeginAgentJob(driver, vm, QEMU_AGENT_JOB_QUERY) < 0)
goto cleanup;
if (!virDomainObjIsActive(vm)) {
@@ -5447,7 +5470,7 @@ qemuDomainGetVcpusFlags(virDomainPtr dom, unsigned int flags)
qemuDomainObjExitAgent(vm, agent);
endjob:
- qemuDomainObjEndJob(driver, vm);
+ qemuDomainObjEndAgentJob(vm);
if (ncpuinfo < 0)
goto cleanup;
I'd expect changes to qemuDomainSnapshotCreateActiveExternal here since
it calls qemuDomainSnapshotFSFreeze and qemuDomainSnapshotFSThaw from an
async job without acquiring a nested job, which looks wrong. And this
patch should change it to acquire an agent job before talking to the
agent.
@@ -18954,7 +18977,7 @@ qemuDomainPMSuspendForDuration(virDomainPtr
dom,
if (virDomainPMSuspendForDurationEnsureACL(dom->conn, vm->def) < 0)
goto cleanup;
- if (qemuDomainObjBeginJob(driver, vm, QEMU_JOB_MODIFY) < 0)
+ if (qemuDomainObjBeginAgentJob(driver, vm, QEMU_AGENT_JOB_MODIFY) < 0)
goto cleanup;
if (virDomainObjCheckActive(vm) < 0)
...
The rest looks OK.
Jirka