Re: NIC with Erasure offload feature support and Ceph

[Mike Almateia <mike.almateia@gmail.com>]

03-Nov-15 18:07, Gregory Farnum пишет:
> On Tue, Nov 3, 2015 at 3:15 AM, Mike <mike.almateia@gmail.com> wrote:
>> Hello!
>>
>> In our project we planing build a petabayte cluster with Erasure pool.
>> Also we looking on Mellanox ConnectX-4 Lx EN Cards/ConnectX-4 EN Cards
>> for using its a offloading erasure code feature.
>>
>> Someone use this feature in test lab/prodaction?
>
> Nope. Ceph's erasure coding is very configurable (in terms of what
> kind of EC it's doing) but the offload features in NICs that we've
> seen aren't quite flexible enough for what Ceph is doing — it's an
> unusual use case and set of requirements where these offload cards are
> concerned. (We need to take an incoming stream, look at the raw
> stream, then erasure code it into an unknown set of pieces, and then
> send those pieces back out over the network to different addresses.)
> -Greg
>

Thanks for reply.
Mellanox said that offload Erasure Code (RedSolomon algorithm) feature 
support
on NICs will be released around April 2016.
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