[libvirt] [PATCH v4 8/9] qemu_migration: Stop NBD server at Finish phase

At the end of migration, it is important to stop NBD server and thus release all allocated resources. --- src/qemu/qemu_migration.c | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+) diff --git a/src/qemu/qemu_migration.c b/src/qemu/qemu_migration.c index 081a72b..8350f5d 100644 --- a/src/qemu/qemu_migration.c +++ b/src/qemu/qemu_migration.c @@ -1328,6 +1328,30 @@ error: goto cleanup; } + +static void +qemuMigrationStopNBDServer(virQEMUDriverPtr driver, + virDomainObjPtr vm, + qemuMigrationCookiePtr mig) +{ + qemuDomainObjPrivatePtr priv = vm->privateData; + + if (!mig->nbd) + return; + + if (qemuDomainObjEnterMonitorAsync(driver, vm, + QEMU_ASYNC_JOB_MIGRATION_IN) < 0) + return; + + if (qemuMonitorNBDServerStop(priv->mon) < 0) + VIR_WARN("Unable to stop NBD server"); + + qemuDomainObjExitMonitor(driver, vm); + + virPortAllocatorRelease(driver->remotePorts, priv->nbdPort); + priv->nbdPort = 0; +} + /* 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 @@ -3743,6 +3767,8 @@ qemuMigrationFinish(virQEMUDriverPtr driver, VIR_WARN("unable to provide network data for relocation"); } + qemuMigrationStopNBDServer(driver, vm, mig); + if (flags & VIR_MIGRATE_PERSIST_DEST) { virDomainDefPtr vmdef; if (vm->persistent) -- 1.8.1.2