On Fri, Mar 2, 2018 at 4:29 AM, Max Cuttins <max@xxxxxxxxxxxxx> wrote:
Hi Federico,
Hi Max,
On Feb 28, 2018, at 10:06 AM, Max Cuttins <max@xxxxxxxxxxxxx> wrote:I like your thinking, but I wonder why doesn’t a locally-mounted kRBD volume meet this need? It seems easier than iSCSI and I would venture would show twice the performance at least in some cases.
This is true, but having something that just works in order to have minimum compatibility and start to dismiss old disk is something you should think about.
You'll have ages in order to improve and get better performance. But you should allow Users to cut-off old solutions as soon as possible while waiting for a better implementation.
Simple because it's not possible.
XenServer is closed. You cannot add RPM (so basically install ceph) without hack the distribution by removing the limitation to YUM.
And this is what we do here: https://github.com/rposudnevskiy/RBDSR
Understood. Thanks Max, I did not realize you were also speaking about Xen, I thought you meant to find an arbitrary non-virtual disk replacement strategy ("start to dismiss old disk").
We do speak to the Xen team every once in a while, but while there is interest in adding Ceph support on their side, I think we are somewhat down the list of their priorities.
Thanks -F
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