Actually I messed that up slightly on the case. My C is a bit rusty:

diff -U3 -r libvirt-1.2.13.orig/src/qemu/qemu_migration.c libvirt-1.2.13/src/qemu/qemu_migration.c

--- libvirt-1.2.13.orig/src/qemu/qemu_migration.c 2015-02-23 22:04:12.000000000 -0800

+++ libvirt-1.2.13/src/qemu/qemu_migration.c 2015-03-18 13:55:45.873322477 -0700

@@ -1507,9 +1507,12 @@

flags |= VIR_STORAGE_VOL_CREATE_PREALLOC_METADATA;

break;

+ case VIR_STORAGE_TYPE_NETWORK:

+ ret = 0;

+ goto cleanup;

+ break;

case VIR_STORAGE_TYPE_BLOCK:

case VIR_STORAGE_TYPE_DIR:

- case VIR_STORAGE_TYPE_NETWORK:

case VIR_STORAGE_TYPE_NONE:

case VIR_STORAGE_TYPE_LAST:

virReportError(VIR_ERR_INTERNAL_ERROR,

On Wed, Mar 18, 2015 at 1:42 PM, Noel Burton-Krahn <noel@pistoncloud.com> wrote:

Hi Michal,

We're testing libvirt-1.2.13 and found it failed to live migrate domains with attached network drives. The change to libvirt was made in commit cf54c606, announced here: https://www.redhat.com/archives/libvir-list/2014-November/msg01053.html

It's not necessary to precreate network drives. They're created during nova live migration in openstack. How about this patch?

diff -U3 -r libvirt-1.2.13.orig/src/qemu/qemu_migration.c libvirt-1.2.13/src/qemu/qemu_migration.c
--- libvirt-1.2.13.orig/src/qemu/qemu_migration.c 2015-02-23 22:04:12.000000000 -0800
+++ libvirt-1.2.13/src/qemu/qemu_migration.c 2015-03-18 12:18:14.137990147 -0700
@@ -1510,6 +1510,9 @@
case VIR_STORAGE_TYPE_BLOCK:
case VIR_STORAGE_TYPE_DIR:
case VIR_STORAGE_TYPE_NETWORK:
+ ret = 0;
+ goto cleanup;
+ break;
case VIR_STORAGE_TYPE_NONE:
case VIR_STORAGE_TYPE_LAST:
virReportError(VIR_ERR_INTERNAL_ERROR,

Cheers,
--
Noel Burton-Krahn
Sr, Distributed Systems Engineer
Piston Cloud Computing