[Gluster-devel] RDMA in GlusterFs

[Rafi Kavungal Chundattu Parambil]

Hi Liu,

RDMA support in GlusterFS has been dropped from the latest release and removed from the codebase. You can find more details here in the mail sent as the proposal to drop the feature[1].

<snippet from proposal mail>
Gluster
started supporting RDMA while ib-verbs was still new, and very high-end
infra around that time were using Infiniband. Engineers did work with
Mellanox, and got the technology into GlusterFS for better data migration,
data copy. While current day kernels support very good speed with IPoIB
module itself, and there are no more bandwidth for experts in these area to
maintain the feature, we recommend migrating over to TCP (IP based) network
for your volume.If you are successfully using RDMA transport, do get in
touch with us to prioritize the migration plan for your volume. Plan is to
work on this after the release, so by version 6.0, we will have a cleaner
transport code, which just needs to support one type.
</end od snippet>

That said, Officially GlusterFs doesn't support RDMA on master branch.

[1] : https://lists.gluster.org/pipermail/gluster-users/2018-July/034400.html


Regards
Rafi KC
>
>
> Does anyone use RDMA in Glusterfs before? What’s RDMA usability in
> Glusterfs now?
>
>
>
> *From:* Liu, Changcheng
> *Sent:* Tuesday, October 1, 2019 11:24 PM
> *To:* 'Yaniv Kaul' <ykaul at redhat.com>; 'Amar Tumballi' <amarts at redhat.com>
> *Cc:* 'gluster-devel at gluster.org' <gluster-devel at gluster.org>
> *Subject:* RE: RDMA in GlusterFs
>
>
>
> Does anyone know whether Glusterfs support RDMA or not in master branch
> now?
>
>
>
> *From:* Liu, Changcheng
> *Sent:* Tuesday, October 1, 2019 12:16 AM
> *To:* Yaniv Kaul <ykaul at redhat.com>; Amar Tumballi <amarts at redhat.com>
> *Cc:* gluster-devel at gluster.org
> *Subject:* RDMA in GlusterFs
>
>
>
> Hi Yaniv Kaul & Amar Tumbali
>
> Upstream question:
>
>        Does Glusterfs support RDMA after below PR is merged?
>
>              ibverbs/rdma: remove from build:
> https://github.com/gluster/glusterfs/commit/8f37561d665b
>
>
>
> B.R.
>
> Changcheng
>