Bug 1402026

Summary:	During OverCloud Deploy initial PXE deploy boot is extremely slow when using UCS VIC
Product:	Red Hat OpenStack	Reporter:	John Browning <jobrowni>
Component:	ipxe	Assignee:	RHOS Maint <rhos-maint>
Status:	CLOSED NOTABUG	QA Contact:	Shai Revivo <srevivo>
Severity:	medium	Docs Contact:
Priority:	unspecified
Version:	9.0 (Mitaka)	CC:	apevec, bfournie, emarquez, jobrowni, lhh, mburns, slinaber, srevivo
Target Milestone:	---	Keywords:	ZStream
Target Release:	---	Flags:	bfournie: needinfo? (jobrowni)
Hardware:	x86_64
OS:	Linux
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Fixed In Version:		Doc Type:	If docs needed, set a value
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Clone Of:		Environment:
Last Closed:	2017-09-19 20:31:49 UTC	Type:	Bug
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Documentation:	---	CRM:
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:

Description John Browning 2016-12-06 15:23:24 UTC

Description of problem:
We are deploying RHOSP9 on UCS B200M4 Blades using UCS VNIC (VIC/VNIC Virtual Interface Card) and during pxe boot, the nodes take a very long time to pull down the ramdisk image.  This has happened at 2 customers now in similar environments.

Version-Release number of selected component (if applicable):
RHOSP9

How reproducible:

Always

Steps to Reproduce:
1. Deploy overcloud on UCS B200 M4 machines
2.
3.

Actual results:
Very slow pxe boot

Expected results:
Fast pxe boot like other hardware

Additional info:
On customers using UCS gear, without using a VNIC/VIC, the machines pxe boot at normal speed.  When using VNIC/VIC on same gear, pxe boot is horribly slow.

Comment 2 John Browning 2016-12-06 15:36:39 UTC

It may be related to this cisco defect: http://tools.cisco.com/Support/BugToolKit/search/getBugDetails.do?method=fetchBugDetails&bugId=CSCtu17983

Referenced in this forum: https://supportforums.cisco.com/discussion/11521776/poor-autodeploy-performance-ucs-b-series

Comment 3 Bob Fournier 2017-08-26 00:50:17 UTC

John - any update on this?  Thanks.

Comment 4 Bob Fournier 2017-09-19 20:31:49 UTC

As noted in Comment 2, there is a known issue in Cisco PXE implementation which causes poor deploy performance.  Closing this out as it does appear to be an issue with Ironic PXE implementation.