Yes, it's possible just like a volume from Cinder. But it still exists
some works todo. We need to pass iops/bw throttle value in via config
or flavor metadata. If you want to get it as quick as possible, you
can add some hack codes like this:
tune_items = ['disk_read_bytes_sec', 'disk_read_iops_sec',
'disk_write_bytes_sec', 'disk_write_iops_sec',
'disk_total_bytes_sec', 'disk_total_iops_sec']
# Note(yaguang): Currently, the only tuning available is Block I/O
# throttling for qemu.
if self.source_type in ['file', 'block']:
for key, value in extra_specs.iteritems():
scope = key.split(':')
if len(scope) > 1 and scope[0] == 'quota':
if scope[1] in tune_items:
setattr(info, scope[1], value)
+ if not getattr(info, 'disk_total_bytes_sec'):
+ setattr(info, 'disk_total_bytes_sec',
CONF.libvirt.images_default_bw_second)
+ if not getattr(info, 'disk_total_iops_sec'):
+ setattr(info, 'disk_total_iops_sec',
CONF.libvirt.images_default_iops_second)
return info
On Wed, Aug 27, 2014 at 4:32 PM, Tyler Wilson <k...@linuxdigital.net> wrote:
> Hey All,
>
> Is it possible to setup a iops/bytesps limitation within nova using libvirt
> methods? I've found the following links but cant get it to work with my
> environment;
>
> http://ceph.com/planet/openstack-ceph-rbd-and-qos/
> https://wiki.openstack.org/wiki/InstanceResourceQuota
>
> I see in the commit code that it specifically mentions file and block with
> no network in the code;
>
> tune_items = ['disk_read_bytes_sec', 'disk_read_iops_sec',
> 'disk_write_bytes_sec', 'disk_write_iops_sec',
> 'disk_total_bytes_sec', 'disk_total_iops_sec']
> # Note(yaguang): Currently, the only tuning available is Block I/O
> # throttling for qemu.
> if self.source_type in ['file', 'block']:
> for key, value in extra_specs.iteritems():
> scope = key.split(':')
> if len(scope) > 1 and scope[0] == 'quota':
> if scope[1] in tune_items:
> setattr(info, scope[1], value)
> return info
>
> Is it possible to limit or establish QoS rules for network storage in nova
> currently or only in cinder? My source protocol is rbd, qemu driver and raw
> disk type.
>
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--
Best Regards,
Wheat
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