Re: [one-users] Copy image on Ceph to file-based datastore

2014-03-23 Thread Stuart Longland
Hi Jaime, On 21/03/14 19:57, Jaime Melis wrote: > Have you benchmarked Online write-through caching / Online write-back > / Offline write-back ? Benchmarked? I haven't even written the code yet. At the moment without caching I'm getting about 120MB/sec in my VMs when using virtio storage. I've

Re: [one-users] Copy image on Ceph to file-based datastore

2014-03-21 Thread Jaime Melis
Hi, Have you benchmarked Online write-through caching / Online write-back / Offline write-back ? Are you proposing we should allow the three options or just stick to one? Anyways, this sounds like an amazing addon :) http://opennebula.org/addons/create/ It'd be nice if in the machine template w

Re: [one-users] Copy image on Ceph to file-based datastore

2014-03-20 Thread Stuart Longland
Hi Jaime, On 18/03/14 19:26, Jaime Melis wrote: > before moving on to the implementation details, how are you thinking of > specifying if a VM should run from the datastore or from a local file? > > I'm afraid this is going to be very tricky, because we need to figure > out how to tell the core to

Re: [one-users] Copy image on Ceph to file-based datastore

2014-03-18 Thread Jaime Melis
Hi Stuart, before moving on to the implementation details, how are you thinking of specifying if a VM should run from the datastore or from a local file? I'm afraid this is going to be very tricky, because we need to figure out how to tell the core to generate a deployment file that references a

[one-users] Copy image on Ceph to file-based datastore

2014-03-13 Thread Stuart Longland
Hi all, In OpenNebula, it seems we can easily set it up to use Ceph as a datastore for images, cloning non-persistent images to make temporary copies, etc. We can also have the images stored as files on the frontend computer and dolled out via SSH; and in the case of "persistent" images, copied b