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qemu: Introduce qemuMigrationDstFinishOffline

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Refactors qemuMigrationDstFinish by moving some parts to a dedicated
function for easier introduction of postcopy resume code without
duplicating common parts of the Finish phase. The goal is to have the
following call graph:

    - qemuMigrationDstFinish
        - qemuMigrationDstFinishOffline
        - qemuMigrationDstFinishActive
            - qemuMigrationDstFinishFresh
            - qemuMigrationDstFinishResume

Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
This commit is contained in:
Jiri Denemark 2022-05-17 14:19:12 +02:00
parent 8ede853a9f
commit 71951e9869
1 changed files with 29 additions and 10 deletions
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39
src/qemu/qemu_migration.c
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@ -5808,6 +5808,32 @@ qemuMigrationDstComplete(virQEMUDriver *driver,
}
static virDomainPtr
qemuMigrationDstFinishOffline(virQEMUDriver *driver,
virConnectPtr dconn,
virDomainObj *vm,
qemuMigrationCookie *mig,
char **cookieout,
int *cookieoutlen)
{
virDomainPtr dom = NULL;
if (qemuMigrationDstPersist(driver, vm, mig, false) < 0)
return NULL;
dom = virGetDomain(dconn, vm->def->name, vm->def->uuid, -1);
if (dom &&
qemuMigrationCookieFormat(mig, driver, vm,
QEMU_MIGRATION_DESTINATION,
cookieout, cookieoutlen,
QEMU_MIGRATION_COOKIE_STATS) < 0)
VIR_WARN("Unable to encode migration cookie");
return dom;
}
/*
* Perform Finish phase of a fresh (i.e., not recovery) migration of an active
* domain.
@ -5998,16 +6024,9 @@ qemuMigrationDstFinish(virQEMUDriver *driver,
goto error;
if (flags & VIR_MIGRATE_OFFLINE) {
if (retcode == 0 &&
qemuMigrationDstPersist(driver, vm, mig, false) == 0) {
dom = virGetDomain(dconn, vm->def->name, vm->def->uuid, -1);
if (dom &&
qemuMigrationCookieFormat(mig, driver, vm,
QEMU_MIGRATION_DESTINATION,
cookieout, cookieoutlen,
QEMU_MIGRATION_COOKIE_STATS) < 0)
VIR_WARN("Unable to encode migration cookie");
if (retcode == 0) {
dom = qemuMigrationDstFinishOffline(driver, dconn, vm, mig,
cookieout, cookieoutlen);
}
qemuMigrationJobFinish(vm);