Description of feature:
When a VM migrates from one host to another destination host, an essential spice session data should be migrated as well. Then, the server-client session can be restored on the destination side, without losing any mandatory information.
(a) Data that has been in-flight between the server and the client during migration is not lost. As a result, ongoing usb, vdagent, and smartcard transfers are not aborted, and can continue smoothly after migration.
(b) Without this feature, the primary display surface and other off-screen surfaces that were already sent to the client, have to be resent to the client after migration has completed. With Seamless migration, this data is not resent. Thus, the performance of the spice session is less affected by migration, and as a result the migration is less noticeable by the user.
affected components: spice-server, spice-gtk, spice-protocol, qemu-kvm, libvirt
If one of the components does not support seamless migration, we fallback to the old migration.
back to RFEs for consistency with other spice rfe bugs
This bug is currently attached to errata RHEA-2013:14491. If this change is not to be documented in the text for this errata please either remove it from the errata, set the requires_doc_text flag to minus (-), or leave a "Doc Text" value of "--no tech note required" if you do not have permission to alter the flag.
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Thanks in advance.
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.
For information on the advisory, and where to find the updated
files, follow the link below.
If the solution does not work for you, open a new bug report.