2.6.31 guest vm's unable to use virtio
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
QEMU |
Fix Released
|
Medium
|
Anthony Liguori | ||
kvm (Ubuntu) |
Fix Released
|
Medium
|
Unassigned | ||
linux (Ubuntu) |
Fix Released
|
Medium
|
Andy Whitcroft |
Bug Description
Runing Karmic + kvm on the host.
Creating guest qcow2 disk images with:
kvm-image create -f qcow2 foo.img 8G
And starting the virtual machine with virtio disk:
kvm -m 512 -drive if=virtio,
Very shortly after boot, there will be I/O errors reported on /dev/vda, and the filesystem will go read only. The guest isn't of much use at this point.
Downgrading to the Jaunty 2.6.28 kernel, or even the upstream 2.6.30 kernel seems to fix the problem.
The problem is only seen with qcow2 images (not raw, LVM, whole disk partitions).
The problem is also not seen if virtio is disabled.
:-Dustin
ProblemType: Bug
Architecture: amd64
Date: Wed Jul 22 15:46:51 2009
DistroRelease: Ubuntu 9.10
MachineType: LENOVO 7454CTO
Package: linux-image-
ProcCmdLine: root=UUID=
ProcEnviron:
PATH=(custom, user)
LANG=en_US.UTF-8
SHELL=/bin/bash
ProcVersionSign
RelatedPackageV
SourcePackage: linux
Uname: Linux 2.6.31-3-generic x86_64
dmi.bios.date: 04/22/2009
dmi.bios.vendor: LENOVO
dmi.bios.version: 6DET44WW (2.08 )
dmi.board.name: 7454CTO
dmi.board.vendor: LENOVO
dmi.board.version: Not Available
dmi.chassis.
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.
dmi.modalias: dmi:bvnLENOVO:
dmi.product.name: 7454CTO
dmi.product.
dmi.sys.vendor: LENOVO
Changed in linux (Ubuntu): | |
assignee: | nobody → Andy Whitcroft (apw) |
Changed in qemu: | |
status: | Triaged → Fix Committed |
Changed in qemu: | |
status: | Fix Committed → Fix Released |
tags: | added: iso-testing |
http://<email address hidden> /msg19695. html
It seems that qemu-kvm commit bf011293f is to blame.
I can confirm that reverting this commit solves the issue using the latest daily qemu-kvm, as built in my personal PPA.
:-Dustin