Am 23.05.2012 09:19, schrieb Josh Durgin: > On 05/23/2012 12:01 AM, Stefan Priebe - Profihost AG wrote: >> Am 23.05.2012 08:30, schrieb Josh Durgin: >>> On 05/22/2012 11:18 PM, Stefan Priebe - Profihost AG wrote: >>>> Hi, >>>> >>>>>> So try enabling RBD writeback caching — see http://marc.info >>>>>> /?l=ceph-devel&m=133758599712768&w=2 >>>>>> will test tomorrow. Thanks. >>>> Can we path this to the qemu-drive option? >>> >>> Yup, see >>> http://article.gmane.org/gmane.comp.file-systems.ceph.devel/6400 >> I'm sorry, i still don't get it where to pass rbd_cache_max_dirty, ... >> can i add it just to the ceph.conf? Even with qemu 1.0? > > You can use any of the rbd-specific options (like rbd_cache_max_dirty) > with qemu >= 0.15. > > You can set them in a global ceph.conf file, or specify them on the qemu > command line like: > > qemu -m 512 -drive > file=rbd:pool/image:rbd_cache_max_dirty=0:rbd_cache=true,format=raw,if=virtio So this is enough for testing on kvm host? /etc/ceph/ceph.conf [global] auth supported = cephx keyring = /etc/ceph/$name.keyring rbd_cache = true rbd_cache_size = 32M rbd_cache_max_age = 2.0 ... Stefan -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
