From mboxrd@z Thu Jan 1 00:00:00 1970 From: 'Christoph Hellwig' Subject: Re: nvmet_rdma crash - DISCONNECT event with NULL queue Date: Wed, 2 Nov 2016 16:15:40 +0100 Message-ID: <20161102151540.GB14825@lst.de> References: <6f42d056-284d-00fc-2b98-189f54957980@grimberg.me> <01cc01d2345b$d445acd0$7cd10670$@opengridcomputing.com> <4cc25277-429a-4ab9-470c-b3af1428ce93@grimberg.me> <01d101d2345e$2f054390$8d0fcab0$@opengridcomputing.com> <01d901d2345f$da0d2e00$8e278a00$@opengridcomputing.com> <1d09c064-1cbe-7e6e-43d2-cfa6cf0c19ea@grimberg.me> <024e01d23476$6668b890$333a29b0$@opengridcomputing.com> <3512b8bb-4d29-b90a-49e1-ebf1085c47d7@grimberg.me> <004601d2351a$d9db85b0$8d929110$@opengridcomputing.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <004601d2351a$d9db85b0$8d929110$@opengridcomputing.com> Sender: linux-rdma-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Steve Wise Cc: 'Sagi Grimberg' , 'Christoph Hellwig' , linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-nvme-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org List-Id: linux-rdma@vger.kernel.org On Wed, Nov 02, 2016 at 10:07:38AM -0500, Steve Wise wrote: > I'm not sure I understand the "subsystem" concept. I never noticed before that > any target device had the same controller ID. The target json config file is > inserted below. There are 10 ramdisks exported over 2 ports of a cxgb4 40GE > device and 1 port of an mlx4 RoCE device. For this test, the NVMF host > connects to all 10 targets over 1 port of the cxgb4 device. Like this: Yes, you have multiple subsystems. It's sort of the NVMe equivalent of a target which can have multiple LUNs, aka Namespaces in NVMe. Btw, I want to actually make the ctrlid global for the target instead of per-subsystem to ease a few things, and debuggability is just one more on the list. -- 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