hi list, i am trying to change the input and output scheduler on my disks, and it does not allow me , I have several virtualized vm over kvm, and when I try to make the change it shows me this message:
echo "noop" > /sys/block/vda/queue/scheduler
-bash: echo: write error: Invalid argument
kernel version:
3.10.0-1127.13.1.el7.x86_64
any idea?
Am 03.07.2020 um 18:54 schrieb Rick Gutierrez:
hi list, i am trying to change the input and output scheduler on my disks, and it does not allow me , I have several virtualized vm over kvm, and when I try to make the change it shows me this message:
echo "noop" > /sys/block/vda/queue/scheduler
-bash: echo: write error: Invalid argument
kernel version:
3.10.0-1127.13.1.el7.x86_64
any idea?
I would guess that the scheduler "noop" isn't available, thus that specific error message.
On my physical Server CentOS 7 with latest kernel:
# cat /sys/block/nvme0n1/queue/scheduler [none] mq-deadline kyber
The KVM VM on that host, too CentOS 7 with latest kernel:
# cat /sys/block/vda/queue/scheduler [mq-deadline] kyber none
Alexander
El vie., 3 jul. 2020 a las 11:05, Alexander Dalloz (ad+lists@uni-x.org) escribió:
I would guess that the scheduler "noop" isn't available, thus that specific error message.
On my physical Server CentOS 7 with latest kernel:
# cat /sys/block/nvme0n1/queue/scheduler [none] mq-deadline kyber
The KVM VM on that host, too CentOS 7 with latest kernel:
# cat /sys/block/vda/queue/scheduler [mq-deadline] kyber none
Alexander
Hi , It is strange, in previous versions of this kernel I have it available, in an environment with vmware vsphere 6.
any modifications in this kernel that did not include it?
-
Alexander Dalloz -
Rick Gutierrez