Bug 903922

Summary:	Disable or remove virtio-9p until it becomes supportable
Product:	Red Hat Enterprise Linux 7	Reporter:	juzhang <juzhang>
Component:	qemu-kvm	Assignee:	Miroslav Rezanina <mrezanin>
Status:	CLOSED CURRENTRELEASE	QA Contact:	Virtualization Bugs <virt-bugs>
Severity:	medium	Docs Contact:
Priority:	medium
Version:	7.0	CC:	acathrow, hhuang, huding, michen, pbonzini, qzhang, rhod, rjones, sluo, virt-maint
Target Milestone:	rc
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:	qemu-kvm-1.4.0-3.el7.x86_64.rpm	Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2014-06-13 11:09:38 UTC	Type:	Bug
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:	720747, 895240

Description juzhang 2013-01-25 04:00:36 UTC

Description of problem:
KVM QE compared the list of cmd line and devices difference between rhel6.4 and rhel7.0. Found some general virtio devices are added. From KVM QE POV, Plese disable or remove usb related devices that qemu-kvm does not support.

Version-Release number of selected component (if applicable):
Host Kernel
#uname -r
3.7.0-0.30.el7.x86_64
qemu-kvm version
qemu-kvm-1.3.0-3.el7.x86_64

How reproducible:
100%

Steps to Reproduce:
1.
2.
3.

Actual results:
RHEL6.4
Virtio device
#/usr/libexec/qemu-kvm -device ? 2>&1 | grep -i virtio
name "virtio-scsi-pci", bus PCI, alias "virtio-scsi"
name "virtio-balloon-pci", bus PCI
name "virtio-serial-pci", bus PCI, alias "virtio-serial"
name "virtio-net-pci", bus PCI
name "virtio-blk-pci", bus PCI, alias "virtio-blk"
name "virtserialport", bus virtio-serial-bus
name "virtconsole", bus virtio-serial-bus

RHEL7.0
Virtio device(added virtio-rng-pci and virtio-9p-pci, will be supported on rhel7.0?)
#/usr/libexec/qemu-kvm -device ? 2>&1 | grep -i virtio
name "virtio-blk-pci", bus PCI, alias "virtio-blk"
name "virtio-9p-pci", bus PCI
name "virtserialport", bus virtio-serial-bus
name "virtconsole", bus virtio-serial-bus
name "virtio-serial-pci", bus PCI, alias "virtio-serial"
name "virtio-rng-pci", bus PCI
name "virtio-net-pci", bus PCI, alias "virtio-net"
name "virtio-scsi-pci", bus PCI
name "virtio-balloon-pci", bus PCI, alias "virtio-balloon"

Expected results:
Disable or remove general virtio devices that qemu-kvm does not support

Additional info:

Comment 1 Richard W.M. Jones 2013-01-29 08:34:36 UTC

virtio-rng-pci should definitely be in RHEL 7.  It's a
very useful device.

virtio-9p-pci is also useful -- libguestfs *could* use it (although
not by default), and I believe that Dan's libvirt sandbox stuff
is based on it.  However 9pfs hasn't exactly set the world on fire.

Comment 3 Miroslav Rezanina 2013-04-23 09:42:40 UTC

Fixed in qemu-kvm-1.4.0-3.el7.x86_64.rpm

Comment 5 huiqingding 2014-01-14 10:00:40 UTC

Reproduced this issue using qemu-kvm-1.3.0-6.el7.x86_64, "virtio-9p-pci" is not removed.
# /usr/libexec/qemu-kvm -device ? 2>&1 | grep -i virtio
name "virtio-blk-pci", bus PCI, alias "virtio-blk"
name "virtio-9p-pci", bus PCI
name "virtserialport", bus virtio-serial-bus
name "virtconsole", bus virtio-serial-bus
name "virtio-serial-pci", bus PCI, alias "virtio-serial"
name "virtio-rng-pci", bus PCI
name "virtio-net-pci", bus PCI, alias "virtio-net"
name "virtio-scsi-pci", bus PCI
name "virtio-balloon-pci", bus PCI, alias "virtio-balloon"

Verified this issue using qemu-kvm-1.5.3-35.el7.x86_64, "virtio-9p-pci" is removed.
# /usr/libexec/qemu-kvm -device ? 2>&1 | grep -i virtio
name "virtio-blk-device", bus virtio-bus
name "virtio-blk-pci", bus PCI, alias "virtio-blk"
name "virtio-scsi-device", bus virtio-bus
name "virtio-scsi-pci", bus PCI
name "virtio-net-device", bus virtio-bus
name "virtio-net-pci", bus PCI, alias "virtio-net"
name "virtconsole", bus virtio-serial-bus
name "virtio-serial-device", bus virtio-bus
name "virtio-serial-pci", bus PCI, alias "virtio-serial"
name "virtserialport", bus virtio-serial-bus
name "virtio-balloon-device", bus virtio-bus
name "virtio-balloon-pci", bus PCI, alias "virtio-balloon"
name "virtio-rng-device", bus virtio-bus
name "virtio-rng-pci", bus PCI

Comment 7 Ludek Smid 2014-06-13 11:09:38 UTC

This request was resolved in Red Hat Enterprise Linux 7.0.

Contact your manager or support representative in case you have further questions about the request.