On Fri, Nov 8, 2013 at 9:31 AM, Josh Durgin <josh.durgin@xxxxxxxxxxx> wrote:
On 11/08/2013 03:50 AM, Wido den Hollander wrote:Indeed, that was implemented in OpenStack Havana. I think the docs
On 11/07/2013 08:42 PM, Gruher, Joseph R wrote:
Is there any plan to implement some kind of QoS in Ceph? Say I want to
provide service level assurance to my OpenStack VMs and I might have to
throttle bandwidth to some to provide adequate bandwidth to others - is
anything like that planned for Ceph? Generally with regard to block
storage (rbds), not object or filesystem.
Or is there already a better way to do this elsewhere in the OpenStack
cloud?
I don't know if OpenStack supports it, but in CloudStack we recently
implemented the I/O throttling mechanism of Qemu via libvirt.
That might be a solution if OpenStack implements that as well?
haven't been updated yet, but one of the related blueprints is:
https://blueprints.launchpad.net/cinder/+spec/pass-ratelimit-info-to-nova
Yes, it seemed lack of necessary docs to guide users.
I just list commands below to help users to understand:
cinder qos-create high_read_low_write consumer="front-end" read_iops_sec=1000 write_iops_sec=10
cinder type-create type1
cinder qos-associate [qos-spec-id] [type-id]
cinder create --display-name high-read-low-write-volume --volume-type type1 100
nova volume-attach vm-1 high-read-low-write-volume /dev/vdb
Thanks,
Joe
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Best Regards,
Wheat
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