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
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