Bug 210415

Summary:	multipathd doesn't correctly monitor gnbd devices
Product:	Red Hat Enterprise Linux 5	Reporter:	Ben Marzinski <bmarzins>
Component:	gnbd	Assignee:	Ben Marzinski <bmarzins>
Status:	CLOSED CURRENTRELEASE	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	5.0	CC:	cluster-maint
Target Milestone:	---
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	5.0.0	Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2006-11-28 21:04:35 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description Ben Marzinski 2006-10-11 21:54:22 UTC

Description of problem:
gnbd and device-mapper-multipath do not work well together. GNBD devices that
should not be monitored are being monitored by multipathd, and some gnbd devices
that should be monitored are not.

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


How reproducible:
Always


Steps to Reproduce:
1.modprobe gnbd
2.service multipathd start
3.gnbd_import -i <gnbd_server>
4.gnbd_import -R
  
Actual results:
all 128 gnbd devices are monitored, even though none are used. When gnbd device
is unimported, it is still monitored

Expected results:
only used gnbd devices are monitored. When then are unimported, they stop being
monitored

Additional info:
There are small fixes necessary for both gnbd and device-mapper-multipath. I
already have the code done and tested.

Comment 1 Kiersten (Kerri) Anderson 2006-10-11 22:09:52 UTC

Devel ACK for beta2 - regression from rhel4.

Comment 2 RHEL Program Management 2006-10-11 22:17:06 UTC

This request was evaluated by Red Hat Product Management for inclusion in a Red
Hat Enterprise Linux release.  Product Management has requested further review
of this request by Red Hat Engineering.  This request is not yet committed for
inclusion in release.

Comment 3 Ben Marzinski 2006-10-16 20:14:35 UTC

This is fixed. multipathd now only monitors the correct devices, and gnbd
correctly informs it when to update