Re: [openstack-dev] FFE Request: Make RBD Usable for Ephemeral Storage

2013-09-18 Thread Thierry Carrez
Mike Perez wrote: Currently in Havana development, RBD as ephemeral storage has serious stability and performance issues that makes the Ceph cluster a bottleneck for using an image as a source. [...] This comes up a bit late, and the current RC bugs curves[1] really do not encourage me to

Re: [openstack-dev] FFE Request: Make RBD Usable for Ephemeral Storage

2013-09-18 Thread John Griffith
On Wed, Sep 18, 2013 at 8:14 AM, Thierry Carrez thie...@openstack.orgwrote: Mike Perez wrote: Currently in Havana development, RBD as ephemeral storage has serious stability and performance issues that makes the Ceph cluster a bottleneck for using an image as a source. [...] This

Re: [openstack-dev] FFE Request: Make RBD Usable for Ephemeral Storage

2013-09-18 Thread Russell Bryant
On 09/18/2013 10:34 AM, John Griffith wrote: On Wed, Sep 18, 2013 at 8:14 AM, Thierry Carrez thie...@openstack.org mailto:thie...@openstack.org wrote: Mike Perez wrote: Currently in Havana development, RBD as ephemeral storage has serious stability and performance

Re: [openstack-dev] FFE Request: Make RBD Usable for Ephemeral Storage

2013-09-18 Thread Josh Durgin
On 09/18/2013 07:14 AM, Thierry Carrez wrote: Mike Perez wrote: Currently in Havana development, RBD as ephemeral storage has serious stability and performance issues that makes the Ceph cluster a bottleneck for using an image as a source. [...] This comes up a bit late, and the current RC

Re: [openstack-dev] FFE Request: Make RBD Usable for Ephemeral Storage

2013-09-18 Thread Vishvananda Ishaya
On Sep 18, 2013, at 4:50 PM, Josh Durgin josh.dur...@inktank.com wrote: On 09/18/2013 07:14 AM, Thierry Carrez wrote: Mike Perez wrote: Currently in Havana development, RBD as ephemeral storage has serious stability and performance issues that makes the Ceph cluster a bottleneck for using

[openstack-dev] FFE Request: Make RBD Usable for Ephemeral Storage

2013-09-17 Thread Mike Perez
Folks, Currently in Havana development, RBD as ephemeral storage has serious stability and performance issues that makes the Ceph cluster a bottleneck for using an image as a source. Nova has to currently communicate with the external service Glance, which has to talk to the separate Ceph

Re: [openstack-dev] FFE Request: Make RBD Usable for Ephemeral Storage

2013-09-17 Thread Zhi Yan Liu
On Wed, Sep 18, 2013 at 6:16 AM, Mike Perez thin...@gmail.com wrote: Folks, Currently in Havana development, RBD as ephemeral storage has serious stability and performance issues that makes the Ceph cluster a bottleneck for using an image as a source. Nova has to currently communicate with