Re: [libvirt] Live Migration with non-shared storage for kvm

In order to support kvm's live migration with non-shared storage I added two migration flags that user can invoke: VIR_MIGRATE_NON_SHARED_DISK = (1 << 6), /* migration with non-shared storage with full disk copy */ VIR_MIGRATE_NON_SHARED_INC = (1 << 7), /* migration with non-shared storage with incremental copy */ /* (same base image shared between source and destination) */ Likewise I add complementary flags to virsh migrate: non_shared_disk and non_shared_inc As Daniel B. suggested I also added internal flags to be passed in the "background" parameter to the qemu monitor: typedef enum { QEMU_MONITOR_MIGRATE_BACKGROUND = 1 << 0, QEMU_MONITOR_MIGRATE_NON_SHARED_DISK = 1 << 1, /* migration with non-shared storage with full disk copy */ QEMU_MONITOR_MIGRATE_NON_SHARED_INC = 1 << 2, /* migration with non-shared storage with incremental copy */ QEMU_MONITOR_MIGRATION_FLAGS_LAST }; I updated qemu_driver.c's doNativeMigrate and doTunnelMigrate to map the external flags to the internal flags. I updated qemu_monitor_text's qemuMonitorTextMigrate to map the internal flags to the qemu monitor's command line flags. I tested the doNativeMigrate usage of the two flags. However, I could not test the doTunnelMigrate usage because I wasn't sure how it works. Also, qemudDomainSave ends up calling qemuMonitorTextMigrate, but it didn't support the external flags so I assumed that it was not relevant. Here is the diff patch file from the current git: (See attached file: libvirt_migration_ns.patch) -- Kenneth Nagin support it, poll method rebase" various