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Bug 740686

Summary:	virsh nodedev-* commands are undocumented
Product:	Red Hat Enterprise Linux 6	Reporter:	Eric Blake <eblake>
Component:	libvirt	Assignee:	Eric Blake <eblake>
Status:	CLOSED ERRATA	QA Contact:	Virtualization Bugs <virt-bugs>
Severity:	medium	Docs Contact:
Priority:	medium
Version:	6.2	CC:	acathrow, ajia, dallan, dyuan, eblake, mvadkert, mzhan, rwu, vbian, veillard, weizhan, yupzhang
Target Milestone:	rc
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	libvirt-0.9.4-14.el6	Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:	736437	Environment:
Last Closed:	2011-12-06 11:34:20 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:
Bug Depends On:
Bug Blocks:	736437

Comment 1 Eric Blake 2011-09-22 22:58:18 UTC

This bug exists to track the fact that nodedev-* commands of virsh are completely undocumented, including the fact that nodedev-reattach must be used to give a pci passthrough device back to the host after it is no longer needed by any guests.

Comment 2 Eric Blake 2011-09-27 17:53:07 UTC

Upstream patches proposed:
https://www.redhat.com/archives/libvir-list/2011-September/msg00971.html
https://www.redhat.com/archives/libvir-list/2011-September/msg01083.html

Comment 3 Eric Blake 2011-09-28 16:24:10 UTC

In POST:
http://post-office.corp.redhat.com/archives/rhvirt-patches/2011-September/msg00909.html

Comment 6 Vivian Bian 2011-09-29 06:11:46 UTC

tested with 
libvirt-0.9.4-13.el6.x86_64
libvirt-0.9.4-14.el6.x86_64

man virsh 
in -13 build ,there is no nodedev doc, and in -14, nodedev doc is added. Checked libvirt.org, Node devices XML format page has been created under Documentation -> XML format -> Node Devices . 

All of the patch has streamed into -14 build . So set bug status to VERIFIED

Comment 11 yuping zhang 2011-11-03 03:16:23 UTC

Verified the new patch with libvirt-0.9.4-21.el6.x86_64.

Domain XML format page has been updated under Documentation -> XML format -> Domains: 
...
"and reattached to the host after the guest exits. If managed is omitted or "no", and for USB devices, the user is responsible to call virNodeDeviceDettach (or virsh nodedev-dettach) before starting the guest or hot-plugging the device, and virNodeDeviceReAttach (or virsh nodedev-reattach) after hot-unplug or stopping the guest."

And in virsh manual,all content in patch has been updated.

Comment 12 errata-xmlrpc 2011-12-06 11:34:20 UTC

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.

http://rhn.redhat.com/errata/RHBA-2011-1513.html