"if=" parameter impacts the
rbd performance, which is not directly related to rbd caching configuration.
From: sebastien@enovance.com
Date: Thu, 13 Jun 2013 15:59:06 +0200
To: oliver.fran...@filoo.de
CC: ceph-users@lists.ceph.com; ws...@hotmail.com
Subject: Re: [ceph-users] QEMU -
OpenStack doesn't know how to set different caching options for attached block device.See the following blueprint, https://blueprints.launchpad.net/nova/+spec/enable-rbd-tuning-optionsThis might be implemented for Havana.Cheers.Sébastien HanCloud Engineer"Always give 100%. Unless you're giving
Hi,
Am 11.06.2013 um 19:14 schrieb w sun :
> Hi,
>
> We are currently testing the performance with rbd caching enabled with
> write-back mode on our openstack (grizzly) nova nodes. By default, nova fires
> up the rbd volumes with "if=none" mode evidenced by the following cmd line
> from "ps |
Hi,
We are currently testing the performance with rbd caching enabled with
write-back mode on our openstack (grizzly) nova nodes. By default, nova fires
up the rbd volumes with "if=none" mode evidenced by the following cmd line from
"ps | grep".
-drive
file=rbd:ceph-openstack-volumes/volume-949
