On Wed, Jan 17, 2018 at 4:03 PM, Doug Ledford <dledford@xxxxxxxxxx> wrote: > On Tue, 2018-01-16 at 16:14 -0500, Olga Kornievskaia wrote: >> On Tue, Jan 16, 2018 at 2:50 PM, Olga Kornievskaia <aglo@xxxxxxxxx> wrote: >> > On Fri, Jan 12, 2018 at 7:07 PM, Steve Wise <swise@xxxxxxxxxxxxxxxxxxxxx> wrote: >> > > > > Ok. The memory probably doesn't matter. Maybe run krping client and >> > > > >> > > > server on the same host (to use hw-loopback), and see if it works on both, >> > > > one, or neither systems when they are both the client and server. >> > > > >> > > > Loopback on the original "server" machine produces the same failure. >> > > > Jan 12 17:05:40 localhost kernel: mlx5_0:dump_cqe:277:(pid 0): dump error >> > > > cqe >> > > > Jan 12 17:05:40 localhost kernel: 00000000 00000000 00000000 00000000 >> > > > Jan 12 17:05:40 localhost kernel: 00000000 00000000 00000000 00000000 >> > > > Jan 12 17:05:40 localhost kernel: 00000000 00000000 00000000 00000000 >> > > > Jan 12 17:05:40 localhost kernel: 00000000 93003204 1000017c 0005e1d2 >> > > > Jan 12 17:05:40 localhost kernel: krping: cq completion failed with >> > > > wr_id 0 status 4 opcode 0 vender_err 32 >> > > >> > > Can someone from Mellanox comment more on the above CQE error? What exactly is it tell us? >> > > >> > > > >> > > > What does this means? >> > > >> > > Not sure. But it does seem to be tied to that specific machine. Question: Is an IOMMU enabled on that system? >> > >> > IOMMU (Inter's VT-d) is enabled in BIOS (on both machines). >> > >> > > Perhaps that is exposing a dma mapping problem with krping? >> >> I have replaces the CX-5 card with another one and I no longer see the >> krping problem. I think it speaks that it's a card issue... > > Check the firmware on the bad card. Lots of issues disappear if you > have older firmware and update to the latest. That's a valid point. A check of firmware versions is needed. At the time of the problem, I believe I had two machines that each had same firmware versions. After card replacement, the replacement card displays newer firmware. -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
