From mboxrd@z Thu Jan 1 00:00:00 1970 From: Bart Van Assche Subject: Re: mlx4: kernel 3.4-rc1 breaks libumad Date: Mon, 02 Apr 2012 13:35:32 +0000 Message-ID: <4F79AB24.2090200@acm.org> References: <4F795880.4070306@acm.org> <4F798069.4030305@mellanox.com> <4F798A9B.7060805@acm.org> <4F798B9A.6090309@mellanox.com> <4F799222.3050306@acm.org> <4F79A0C5.2030805@mellanox.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <4F79A0C5.2030805-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org> Sender: linux-rdma-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Or Gerlitz Cc: linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-Id: linux-rdma@vger.kernel.org On 04/02/12 12:51, Or Gerlitz wrote: > On 4/2/2012 2:48 PM, Bart Van Assche wrote: >> The two ports are connected back-to-back to another mlx4 HCA. I >> noticed this behavior change since opensm stopped working after >> rebooting into 3.4-rc1. > > can you add these prints and send me the output after attempting to cat > the rate file? Some additional info: - This issue only occurs if the back-to-back connected system is down, not if it is running. - The output I get with the other system down is: # cat /sys/class/infiniband/mlx4_0/ports/1/link_layer InfiniBand # dmesg -c >/dev/null # cat /sys/class/infiniband/mlx4_0/ports/1/rate cat: /sys/class/infiniband/mlx4_0/ports/1/rate: Invalid argument # dmesg -c ib_link_query_port active_speed 7 rate_show ret 0 for ib_query_port dev mlx4_0 port 1 link 1 Bart. -- 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