On 11/13/2010 09:50 PM, Pete Zaitcev wrote:
On Sat, 13 Nov 2010 19:58:37 -0700
Robyn Bergeron <robyn.bergeron(a)gmail.com> wrote:
> Jeff had mentioned on irc the idea of packaging RBD, which uses the lower
> layer of Ceph (per Jeff's description when we were talking).
See, my agenda was to ask next if Jeff's CloudFS had enough consistency
to back a block device emulator and thus displace Speepdog, which I see
as too ad-hoc. Now if Jeff himself prefers to package RBD (RADOS), then
It is true that sheepdog is not generically useful outside of block
storage and specifically QEMU enabled systems (and perhaps XEN).
However in the Fedora performance case, I expect sheepdog with its lower
memory copy operation count and tight integration with QEMU to produce
better performance results and lower cpu utilization, resulting in
higher density of VMs on equivalent hardware. There is only one way to
validate this speculation - integrate the various solutions into Fedora
and see which has the best mix of real-world attributes.
this may be an admission that CloudFS is not up to it. Or perhaps he
not like the idea for other reason. I just basically want him to
discuss the alternatives. I know he knows about them more than I do,
hence the question.
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