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
| ||
|
Date: Mon, 29 Jul 2019 10:17:10 -0600 From: Logan Gunthorpe <logang@...tatee.com> To: Sagi Grimberg <sagi@...mberg.me>, Stephen Bates <sbates@...thlin.com>, Hannes Reinecke <hare@...e.de>, "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>, "linux-nvme@...ts.infradead.org" <linux-nvme@...ts.infradead.org>, "linux-block@...r.kernel.org" <linux-block@...r.kernel.org>, "linux-fsdevel@...r.kernel.org" <linux-fsdevel@...r.kernel.org> Cc: Christoph Hellwig <hch@....de>, Keith Busch <kbusch@...nel.org>, Jens Axboe <axboe@...com>, Chaitanya Kulkarni <Chaitanya.Kulkarni@....com>, Max Gurtovoy <maxg@...lanox.com> Subject: Re: [PATCH v6 00/16] nvmet: add target passthru commands support On 2019-07-29 10:15 a.m., Sagi Grimberg wrote: > >>> This is different from multipath on say a multi-controller PCI device >>> and trying to expose both those controllers through passthru. this is >>> where the problems we are discussing come up. >> >> I *think* there is some confusion. I *think* Sagi is talking about network multi-path (i.e. the ability for the host to connect to a controller on the target via two different network paths that fail-over as needed). I *think* Logan is talking about multi-port PCIe NVMe devices that allow namespaces to be accessed via more than one controller over PCIe (dual-port NVMe SSDs being the most obvious example of this today). > > Yes, I was referring to fabrics multipathing which is somewhat > orthogonal to the backend pci multipathing (unless I'm missing > something). Yes, so if we focus on the fabrics multipathing, the only issue I see is that only one controller can be connected to a passthru target (I believe this was at your request) so two paths simply cannot exist to begin with. I can easily remove that restriction. Logan
Powered by blists - more mailing lists