Anyone know why ubuntu utopic/trusty doesn’t allow to change nr_requests and I/O scheduler for instance that is running on the cloud running openstack havana?
echo 129 > /sys/block/vda/queue/nr_requests
-bash: echo: write error: Invalid argument
However values lower then 129 works.
Thanks
---
AlsaDevices:
total 0
crw-rw---- 1 root audio 116, 1 Mar 24 06:50 seq
crw-rw---- 1 root audio 116, 33 Mar 24 06:50 timer
AplayDevices: Error: [Errno 2] No such file or directory
ApportVersion: 2.14.1-0ubuntu3.7
Architecture: amd64
ArecordDevices: Error: [Errno 2] No such file or directory
AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1:
DistroRelease: Ubuntu 14.04
Ec2AMI: ami-000000a3
Ec2AMIManifest: FIXME
Ec2AvailabilityZone: nova
Ec2InstanceType: ra.intel.ssd.xl4
Ec2Kernel: aki-00000002
Ec2Ramdisk: ari-00000002
HibernationDevice: RESUME=UUID=7b7c8950-fe4d-4322-9a60-48dadc7d5eba
InstallationDate: Installed on 2014-04-16 (343 days ago)
InstallationMedia:
IwConfig: Error: [Errno 2] No such file or directory
Lsusb:
Bus 001 Device 002: ID 0627:0001 Adomax Technology Co., Ltd
Bus 001 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
MachineType: OpenStack Foundation OpenStack Nova
Package: linux (not installed)
PciMultimedia:
ProcEnviron:
SHELL=/bin/bash
TERM=vt100
PATH=(custom, no user)
LANG=en_US.UTF-8
XDG_RUNTIME_DIR=<set>
ProcFB: 0 cirrusdrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.16.0-33-generic root=UUID=afee8cc2-d9a0-4f30-8454-94e974e89bf4 ro console=tty1 console=ttyS0
ProcVersionSignature: Ubuntu 3.16.0-33.44~14.04.1-generic 3.16.7-ckt7
PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon.
RelatedPackageVersions:
linux-restricted-modules-3.16.0-33-generic N/A
linux-backports-modules-3.16.0-33-generic N/A
linux-firmware 1.127.11
RfKill: Error: [Errno 2] No such file or directory
Tags: trusty ec2-images
Uname: Linux 3.16.0-33-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups:
_MarkForUpload: True
dmi.bios.date: 01/01/2011
dmi.bios.vendor: Bochs
dmi.bios.version: Bochs
dmi.chassis.type: 1
dmi.chassis.vendor: Bochs
dmi.modalias: dmi:bvnBochs:bvrBochs:bd01/01/2011:svnOpenStackFoundation:pnOpenStackNova:pvr2013.2.2:cvnBochs:ct1:cvr:
dmi.product.name: OpenStack Nova
dmi.product.version: 2013.2.2
dmi.sys.vendor: OpenStack Foundation
This bug is missing log files that will aid in diagnosing the problem. From a terminal window please run:
apport-collect 1436319
and then change the status of the bug to 'Confirmed'.
If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'.
This change has been made by an automated script, maintained by the Ubuntu Kernel Team.