Ubuntu
linux package

empty barriers not supported by kvm virtio_blk - "end_request: I/O error, dev vda, sector 0" log spam

Bug #432959 reported by Tuomas Heino
12
This bug affects 2 people
Affects Status Importance Assigned to Milestone
linux (Ubuntu)
Triaged
High
Unassigned
Ubuntu ubuntu-9.10

Bug Description

Karmic Alpha 6

https://bugzilla.redhat.com/show_bug.cgi?id=514901
http://bugzilla.kernel.org/show_bug.cgi?id=14157

ProblemType: Bug
AlsaDevices: Error: command ['ls', '-l', '/dev/snd/'] failed with exit code 2: ls: cannot access /dev/snd/: No such file or directory
AplayDevices: Error: [Errno 2] No such file or directory
Architecture: amd64
ArecordDevices: Error: [Errno 2] No such file or directory
Date: Sat Sep 19 11:54:29 2009
DistroRelease: Ubuntu 9.10
Lsusb: Bus 001 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Package: linux-image-2.6.31-10-server 2.6.31-10.34
PciMultimedia:

ProcCmdLine: BOOT_IMAGE=/vmlinuz-2.6.31-10-server root=/dev/mapper/hostname-root ro quiet splash
ProcEnviron:
 LANG=fi_FI.UTF-8
 SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.31-10.34-server
SourcePackage: linux
Uname: Linux 2.6.31-10-server x86_64
dmi.bios.date: 01/01/2007
dmi.bios.vendor: QEMU
dmi.bios.version: QEMU
dmi.chassis.type: 1
dmi.modalias: dmi:bvnQEMU:bvrQEMU:bd01/01/2007:svn:pn:pvr:cvn:ct1:cvr:

Revision history for this message
Tuomas Heino (iheino+ub) wrote :
Jamie Strandboge (jdstrand)
Changed in linux (Ubuntu):
status: New → Confirmed
Revision history for this message
Jamie Strandboge (jdstrand) wrote :

I see this now with a default LVM server installation using http://iso.qa.ubuntu.com/qatracker/info/3141. It does not happen with non-LVM install. Attached is dmesg for fresh default LVM installation in kvm virtual machine using 2 VCPUS, 384M of RAM and 1024M disk.

Matt Zimmerman (mdz)
Changed in linux (Ubuntu):
status: Confirmed → Triaged
importance: Undecided → High
tags: added: regression-potential
Revision history for this message
Andy Whitcroft (apw) wrote :

From the upstream bug it appears that these messages are benign and safe to ignore. Jens implies he will drop those message in future. I cannot yet see that fix in mainline.

Revision history for this message
Dave Hall (skwashd) wrote :

#420423 looks like a dupe of this. It references a (different) proposed kernel patch - http://patchwork.kernel.org/patch/39589/

Andy Whitcroft (apw)
Changed in linux (Ubuntu):
milestone: none → ubuntu-9.10
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