Note: This bug is displayed in read-only format because the product is no longer active in Red Hat Bugzilla.

Bug 1339521

Summary:	start downtime thread after the first migration iteration only
Product:	[oVirt] vdsm	Reporter:	Michal Skrivanek <michal.skrivanek>
Component:	Core	Assignee:	Francesco Romani <fromani>
Status:	CLOSED EOL	QA Contact:	Israel Pinto <ipinto>
Severity:	high	Docs Contact:
Priority:	high
Version:	4.17.11	CC:	bugs, dmoessne, ipinto, mgoldboi, michal.skrivanek, rhev-integ, sbonazzo, tjelinek
Target Milestone:	---	Keywords:	Improvement
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:		Doc Type:	Enhancement
Doc Text:		Story Points:	---
Clone Of:	1323952	Environment:
Last Closed:	2016-07-11 14:44:13 UTC	Type:	Bug
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	Virt	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	1323952
Bug Blocks:	1252426, 1328636

Description Michal Skrivanek 2016-05-25 08:56:16 UTC

hopefully it will provide more "smaller" downtimes as we don't need to do anything until the first iteration is done

Comment 1 Francesco Romani 2016-06-29 15:04:20 UTC

this change does not require doc_text:
- it HAS user-facing consequences (better migrations)
but
- it is NOT directly tunable by the user
so it is more like an internal improvement.

Comment 2 Francesco Romani 2016-06-30 13:00:37 UTC

all patches landed in 3.6.z branch -> MODIFIED

Comment 3 Francesco Romani 2016-06-30 15:19:36 UTC

we need https://gerrit.ovirt.org/60037

Comment 4 Israel Pinto 2016-07-10 09:03:22 UTC

Verify with:
RHEVM Version: 3.6.8-0.1.el6 
Host:
OS Version:RHEL - 7.2 - 13.0.el7ev
Kernel Version:3.10.0 - 327.22.2.el7.x86_64
KVM Version:2.3.0 - 31.el7_2.18
LIBVIRT Version:libvirt-1.2.17-13.el7_2.5
VDSM Version:vdsm-4.17.33-1.el7ev
SPICE Version:0.12.4 - 15.el7_2.1

Steps:
1. Migration VM
2. After migration start monitor vdsm log for migration downtime thread to start on source host:
[root@virt-nested-vm04 ~]# cat /var/log/vdsm/vdsm.log | grep -i "migration downtime thread will use"
Thread-352::DEBUG::2016-07-10 11:42:57,818::migration::450::virt.vm::(__init__) vmId=`ce8803e7-37a8-4348-9745-97be87f4bfd0`::migration downtime thread will use: QEMU iterations

Comment 5 Sandro Bonazzola 2016-07-11 14:44:13 UTC

oVirt 3.6.7 was the last supported version of oVirt 3.6.
No more oVirt 3.6 versions will be released.
Closing EOL, feel free to re-target to 4.0.1 or later