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qemu: live migration with non-shared storage for kvm

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Support for live migration between hosts that do not share storage was
added to qemu-kvm release 0.12.1.
It supports two flags:
-b migration without shared storage with full disk copy
-i migration without shared storage with incremental copy (same base image
shared between source and destination).

I tested the live migration without shared storage (both flags) for native
and p2p with and without tunnelling.  I also verified that the fix doesn't
affect normal migration with shared storage.
This commit is contained in:
Kenneth Nagin
2010-05-04 15:36:42 -06:00
committed by Eric Blake
parent 9537c3d0c2
commit b0a3f8b6c5
7 changed files with 82 additions and 33 deletions
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4
include/libvirt/libvirt.h.in
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@@ -411,6 +411,10 @@ typedef enum {
VIR_MIGRATE_PERSIST_DEST = (1 << 3), /* persist the VM on the destination */
VIR_MIGRATE_UNDEFINE_SOURCE = (1 << 4), /* undefine the VM on the source */
VIR_MIGRATE_PAUSED = (1 << 5), /* pause on remote side */
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) */
} virDomainMigrateFlags;
/* Domain migration. */