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qemu: migration: Drop @def from qemuMigrationIsAllowed

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Now that qemuMigrationIsAllowed is always called with @vm, we can drop
the @def argument and simplify the control flow.

Additionally the comment is invalid so drop it.
This commit is contained in:
Peter Krempa 2015-10-06 15:53:02 +02:00
parent b866991f0c
commit f558c66f17
3 changed files with 51 additions and 63 deletions
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8
src/qemu/qemu_driver.c
View File

@ -3182,7 +3182,7 @@ qemuDomainSaveInternal(virQEMUDriverPtr driver, virDomainPtr dom,
if (!(caps = virQEMUDriverGetCapabilities(driver, false)))
goto cleanup;
if (!qemuMigrationIsAllowed(driver, vm, vm->def, false, false))
if (!qemuMigrationIsAllowed(driver, vm, false, false))
goto cleanup;
if (qemuDomainObjBeginAsyncJob(driver, vm, QEMU_ASYNC_JOB_SAVE) < 0)
@ -3614,7 +3614,7 @@ doCoreDump(virQEMUDriverPtr driver,
goto cleanup;
}
if (!qemuMigrationIsAllowed(driver, vm, vm->def, false, false))
if (!qemuMigrationIsAllowed(driver, vm, false, false))
goto cleanup;
ret = qemuMigrationToFile(driver, vm, fd, 0, path,
@ -13688,7 +13688,7 @@ qemuDomainSnapshotCreateActiveInternal(virConnectPtr conn,
bool resume = false;
int ret = -1;
if (!qemuMigrationIsAllowed(driver, vm, vm->def, false, false))
if (!qemuMigrationIsAllowed(driver, vm, false, false))
goto cleanup;
if (virDomainObjGetState(vm, NULL) == VIR_DOMAIN_RUNNING) {
@ -14503,7 +14503,7 @@ qemuDomainSnapshotCreateActiveExternal(virConnectPtr conn,
/* do the memory snapshot if necessary */
if (memory) {
/* check if migration is possible */
if (!qemuMigrationIsAllowed(driver, vm, vm->def, false, false))
if (!qemuMigrationIsAllowed(driver, vm, false, false))
goto cleanup;
/* allow the migration job to be cancelled or the domain to be paused */

103
src/qemu/qemu_migration.c
View File

@ -2184,69 +2184,58 @@ qemuMigrationIsAllowedHostdev(const virDomainDef *def)
}
/* Validate whether the domain is safe to migrate. If vm is NULL,
* then this is being run in the v2 Prepare stage on the destination
* (where we only have the target xml); if vm is provided, then this
* is being run in either v2 Perform or v3 Begin (where we also have
* access to all of the domain's metadata, such as whether it is
* marked autodestroy or has snapshots). While it would be nice to
* assume that checking on source is sufficient to prevent ever
* talking to the destination in the first place, we are stuck with
* the fact that older servers did not do checks on the source. */
bool
qemuMigrationIsAllowed(virQEMUDriverPtr driver, virDomainObjPtr vm,
virDomainDefPtr def, bool remote, bool abort_on_error)
qemuMigrationIsAllowed(virQEMUDriverPtr driver,
virDomainObjPtr vm,
bool remote,
bool abort_on_error)
{
int nsnapshots;
int pauseReason;
size_t i;
if (vm) {
if (qemuProcessAutoDestroyActive(driver, vm)) {
virReportError(VIR_ERR_OPERATION_INVALID,
"%s", _("domain is marked for auto destroy"));
return false;
}
/* perform these checks only when migrating to remote hosts */
if (remote) {
nsnapshots = virDomainSnapshotObjListNum(vm->snapshots, NULL, 0);
if (nsnapshots < 0)
return false;
if (nsnapshots > 0) {
virReportError(VIR_ERR_OPERATION_INVALID,
_("cannot migrate domain with %d snapshots"),
nsnapshots);
return false;
}
/* cancel migration if disk I/O error is emitted while migrating */
if (abort_on_error &&
virDomainObjGetState(vm, &pauseReason) == VIR_DOMAIN_PAUSED &&
pauseReason == VIR_DOMAIN_PAUSED_IOERROR) {
virReportError(VIR_ERR_OPERATION_INVALID, "%s",
_("cannot migrate domain with I/O error"));
return false;
}
}
if (qemuDomainHasBlockjob(vm, false)) {
virReportError(VIR_ERR_OPERATION_INVALID, "%s",
_("domain has an active block job"));
return false;
}
def = vm->def;
if (qemuProcessAutoDestroyActive(driver, vm)) {
virReportError(VIR_ERR_OPERATION_INVALID,
"%s", _("domain is marked for auto destroy"));
return false;
}
if (!qemuMigrationIsAllowedHostdev(def))
/* perform these checks only when migrating to remote hosts */
if (remote) {
nsnapshots = virDomainSnapshotObjListNum(vm->snapshots, NULL, 0);
if (nsnapshots < 0)
return false;
if (nsnapshots > 0) {
virReportError(VIR_ERR_OPERATION_INVALID,
_("cannot migrate domain with %d snapshots"),
nsnapshots);
return false;
}
/* cancel migration if disk I/O error is emitted while migrating */
if (abort_on_error &&
virDomainObjGetState(vm, &pauseReason) == VIR_DOMAIN_PAUSED &&
pauseReason == VIR_DOMAIN_PAUSED_IOERROR) {
virReportError(VIR_ERR_OPERATION_INVALID, "%s",
_("cannot migrate domain with I/O error"));
return false;
}
}
if (qemuDomainHasBlockjob(vm, false)) {
virReportError(VIR_ERR_OPERATION_INVALID, "%s",
_("domain has an active block job"));
return false;
}
if (!qemuMigrationIsAllowedHostdev(vm->def))
return false;
if (def->cpu && def->cpu->mode != VIR_CPU_MODE_HOST_PASSTHROUGH) {
for (i = 0; i < def->cpu->nfeatures; i++) {
virCPUFeatureDefPtr feature = &def->cpu->features[i];
if (vm->def->cpu && vm->def->cpu->mode != VIR_CPU_MODE_HOST_PASSTHROUGH) {
for (i = 0; i < vm->def->cpu->nfeatures; i++) {
virCPUFeatureDefPtr feature = &vm->def->cpu->features[i];
if (feature->policy != VIR_CPU_FEATURE_REQUIRE)
continue;
@ -2262,8 +2251,8 @@ qemuMigrationIsAllowed(virQEMUDriverPtr driver, virDomainObjPtr vm,
}
/* Verify that memory device config can be transferred reliably */
for (i = 0; i < def->nmems; i++) {
virDomainMemoryDefPtr mem = def->mems[i];
for (i = 0; i < vm->def->nmems; i++) {
virDomainMemoryDefPtr mem = vm->def->mems[i];
if (mem->model == VIR_DOMAIN_MEMORY_MODEL_DIMM &&
mem->info.type != VIR_DOMAIN_DEVICE_ADDRESS_TYPE_DIMM) {
@ -2980,7 +2969,7 @@ qemuMigrationBeginPhase(virQEMUDriverPtr driver,
if (priv->job.asyncJob == QEMU_ASYNC_JOB_MIGRATION_OUT)
qemuMigrationJobSetPhase(driver, vm, QEMU_MIGRATION_PHASE_BEGIN3);
if (!qemuMigrationIsAllowed(driver, vm, NULL, true, abort_on_error))
if (!qemuMigrationIsAllowed(driver, vm, true, abort_on_error))
goto cleanup;
if (!(flags & VIR_MIGRATE_UNSAFE) &&
@ -5341,7 +5330,7 @@ qemuMigrationPerformJob(virQEMUDriverPtr driver,
goto endjob;
}
if (!qemuMigrationIsAllowed(driver, vm, NULL, true, abort_on_error))
if (!qemuMigrationIsAllowed(driver, vm, true, abort_on_error))
goto endjob;
if (!(flags & VIR_MIGRATE_UNSAFE) &&

3
src/qemu/qemu_migration.h
View File

@ -174,8 +174,7 @@ int qemuMigrationConfirm(virConnectPtr conn,
int cancelled);
bool qemuMigrationIsAllowed(virQEMUDriverPtr driver, virDomainObjPtr vm,
virDomainDefPtr def, bool remote,
bool abort_on_error);
bool remote, bool abort_on_error);
int qemuMigrationToFile(virQEMUDriverPtr driver, virDomainObjPtr vm,
int fd, off_t offset, const char *path,