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Bug 1204040 - Enhancing block/disk migration in libvirt
Summary: Enhancing block/disk migration in libvirt
Keywords:
Status: CLOSED DUPLICATE of bug 1210352
Alias: None
Product: Red Hat Enterprise Linux 7
Classification: Red Hat
Component: libvirt
Version: 7.2
Hardware: Unspecified
OS: Unspecified
medium
low
Target Milestone: rc
: ---
Assignee: Jiri Denemark
QA Contact: Virtualization Bugs
URL:
Whiteboard:
Depends On: 1203032 1283495
Blocks:
TreeView+ depends on / blocked
 
Reported: 2015-03-20 08:46 UTC by Jaroslav Suchanek
Modified: 2015-11-19 07:32 UTC (History)
5 users (show)

Fixed In Version:
Doc Type: Enhancement
Doc Text:
Clone Of: 1203032
Environment:
Last Closed: 2015-04-14 13:21:13 UTC
Target Upstream Version:
Embargoed:


Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Launchpad 1246201 0 None None None Never
Launchpad 1334398 0 None None None Never

Description Jaroslav Suchanek 2015-03-20 08:46:22 UTC
+++ This bug was initially created as a clone of Bug #1203032 +++

This is more a feature request than bug.  As libvirt is working it's just that users would benefit from this support.

Here is some context form the openstack world (which at least some of you are
aware of).  There are at least 2 open bug against openstack (nova) in the area
of block/disk migration.

1) Live migration fails when the instance has a config-drive[1]
   Here openstack(nova) fails because a drive that nova expects to be migrated
   isn't migrated.

2) libvirt live_snapshot periodically explodes on libvirt 1.2.2 in the gate[2]
   Here openstack(nova) fails because a drive that nova expects NOT to be
   migrated is migrated.

To me these are essentially the same bug/issue.  There is no way to communicate with
libvirt the users expectations around block/disk mirgration.


The suggestions from the mailing list are to enhance virDomainMigrate3 to take a list of devices to migrate.

[1] https://bugs.launchpad.net/nova/+bug/1246201
[2] https://bugs.launchpad.net/nova/+bug/1334398

--- Additional comment from Tony Breeds on 2015-03-17 20:31:18 EDT ---

I'm very happy to do this work (so I assigned it to me).

I just need to free up the time.

Comment 1 Jiri Denemark 2015-04-14 13:21:13 UTC

*** This bug has been marked as a duplicate of bug 1210352 ***


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