From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jason Gunthorpe Subject: Re: Mellanox CX5 Not Showing Up In ibv_devices (on some systems) Date: Thu, 26 Oct 2017 10:59:40 -0600 Message-ID: <20171026165940.GC5829@obsidianresearch.com> References: Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: Sender: linux-rdma-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: "Gruher, Joseph R" Cc: "linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org" List-Id: linux-rdma@vger.kernel.org On Thu, Oct 26, 2017 at 04:49:29PM +0000, Gruher, Joseph R wrote: > Hi, I'm having trouble with ibv_devices (and related tools like > ibv_devinfo, ib_send_bw, etc) not recognizing my Mellanox CX5 NICs > in some systems. The NICs work fine for TCP/IP traffic, and I think > for RDMA traffic as well as I can do NVMeoF discovery and make > NVMeoF connections, but they're just not listed in ibv_devices. > intel@BigTwin-A:~$ sudo ibv_devices > libibverbs: Warning: no userspace device-specific driver found for > /sys/class/infiniband_verbs/uverbs0 Well, that is pretty big clue, you haven't installed the user space support library. Depending on what os you are using it is either in the libmlx5 or ibverbs-providers packages, Jason -- 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