linux-kernel - Re: [lustre-devel] [PATCH] staging: lustre: delete the filesystem from the tree.

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <CF1B7A14-3C16-4CD1-8274-C6A3E0065624@dilger.ca>
Date:   Sun, 3 Jun 2018 22:15:31 -0600
From:   Andreas Dilger <adilger@...ger.ca>
To:     Alexey Lyashkov <alexey.lyashkov@...il.com>
Cc:     NeilBrown <neilb@...e.com>,
        Andreas Dilger <andreas.dilger@...el.com>,
        "devel@...verdev.osuosl.org" <devel@...verdev.osuosl.org>,
        Oleg Drokin <oleg.drokin@...el.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Christoph Hellwig <hch@...radead.org>,
        "selinux@...ho.nsa.gov" <selinux@...ho.nsa.gov>,
        fsdevel <linux-fsdevel@...r.kernel.org>,
        lustre-devel <lustre-devel@...ts.lustre.org>
Subject: Re: [lustre-devel] [PATCH] staging: lustre: delete the filesystem
 from the tree.

On Jun 3, 2018, at 9:59 PM, Alexey Lyashkov <alexey.lyashkov@...il.com> wrote:
> 
>> On Sun, Jun 03 2018, Dilger, Andreas wrote:
>> 
>>> LNet is originally based on a high-performance networking stack called
>>> Portals (v3, http://www.cs.sandia.gov/Portals/), with additions for LNet
>>> routing to allow cross-network bridging.
>>> 
>>> A critical part of LNet is that it is for RDMA and not packet-based
>>> messages.  Everything in Lustre is structured around RDMA.  Of course,
>>> RDMA is not possible with TCP
> 
> To be clear. Soft IB (aka Soft RoCE) driver is part of OFED stack from 4.8
> (or 4.9).  So RDMA API now is possible with TCP networks.

Well, strictly speaking RoCE still isn't possible with TCP networks.  RoCE v1
is an Ethernet layer protocol (not IP based), while RoCE v2 is UDP/IP based.

Cheers, Andreas






Download attachment "signature.asc" of type "application/pgp-signature" (874 bytes)