From mboxrd@z Thu Jan 1 00:00:00 1970 From: Marta Rybczynska Subject: Re: Unexpected issues with 2 NVME initiators using the same target Date: Wed, 17 May 2017 14:56:36 +0200 (CEST) Message-ID: <779753075.36035391.1495025796237.JavaMail.zimbra@kalray.eu> References: <33e2cc35-f147-d4a4-9a42-8f1245e35842@mellanox.com> <82dd5b24-5657-ae5e-8a33-646fddd8b75b@grimberg.me> <20170515133122.GG3616@mtr-leonro.local> <9465cd0c-83db-b058-7615-5626ef60dbb0@grimberg.me> <20170515143632.GH3616@mtr-leonro.local> <20170515145952.GA7871@infradead.org> <20170515170506.GK3616@mtr-leonro.local> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20170515170506.GK3616-U/DQcQFIOTAAJjI8aNfphQ@public.gmane.org> Sender: linux-rdma-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Leon Romanovsky , Max Gurtovoy Cc: Christoph Hellwig , Sagi Grimberg , "Gruher, Joseph R" , "shahar.salzman" , Laurence Oberman , "Riches Jr, Robert M" , linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Robert LeBlanc , linux-nvme-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org List-Id: linux-rdma@vger.kernel.org > On Mon, May 15, 2017 at 07:59:52AM -0700, Christoph Hellwig wrote: >> On Mon, May 15, 2017 at 05:36:32PM +0300, Leon Romanovsky wrote: >> > I understand you and both Max and me are feeling the same as you. For more >> > than 2 months, we constantly (almost on daily basis) asked for a solution from >> > architecture group, but received different answers. The proposals were >> > extremely broad from need for strong fence for all cards to no need for >> > strong fence at all. >> >> So let's get the patch to do a strong fence everywhere now, and relax >> it later where possible. >> >> Correntness before speed.. > > OK, please give me and Max till EOW to stop this saga. One of the two > options will be: Max will resend original patch, or Max will send patch > blessed by architecture group. > Good luck with this Max & Leon! It seems to be a complicated problem. Just an idea: in our case it *seems* that the problem started appearing after a firmware upgrade, older ones do not seem to have the same behaviour. Maybe it's a hint for you. Thanks! Marta -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html