Re: [PATCH v2 rdma-core 0/6] Common udev/systemd based module auto loading

[Benjamin Drung <benjamin.drung-EIkl63zCoXaH+58JC4qpiA@public.gmane.org>]

Hi Jason,

Am Donnerstag, den 27.07.2017, 16:31 -0600 schrieb Jason Gunthorpe:
> Here is the next revision of the systemd module autoloading approach.
> 
> All the comments have been collected and a few other things
> addressed.
> 
> Notably, at least on debian, when rdma-core is installed for the
> first time it
> activates the new udev rules and moduels autoload immediately, no
> reboot
> required. Not sure about RH's policies, so leaving this to them to
> copy if
> desired.
> 
> There have been positive test results now for rxe, mlx4 (IB), qedr
> and cxgb4
> on Debian derived.
> 
> This is now a PR:
> 
>  https://github.com/linux-rdma/rdma-core/pull/174/commits

thanks for your work. I reviewed the commits and commented them on
GitHub.

I tested the whole patch set on our Debian jessie system (with Mellanox
OFED kernel modules on kernel 4.4), but it failed to load properly.

The mlx4_core module was loaded, but not mlx4_ib. The directory
/sys/class/infiniband is empty.

$ sudo find /sys/ -name '*mlx*'
/sys/bus/pci/drivers/mlx4_core
/sys/devices/pci0000:00/0000:00:02.0/0000:02:00.0/mlx4_port1_mtu
/sys/devices/pci0000:00/0000:00:02.0/0000:02:00.0/mlx4_port2_mtu
/sys/devices/pci0000:00/0000:00:02.0/0000:02:00.0/mlx4_port1
/sys/devices/pci0000:00/0000:00:02.0/0000:02:00.0/mlx4_port2

$ journalctl | grep mlx
mlx4_core: Mellanox ConnectX core driver v3.3-1.0.4 (03 Jul 2016)
mlx4_core: Initializing 0000:02:00.0
mlx4_core: device is working in RoCE mode: Roce V1
mlx4_core: gid_type 1 for UD QPs is not supported by the devicegid_type 0 was chosen instead
mlx4_core: UD QP Gid type is: V1
mlx4_core 0000:02:00.0: PCIe link speed is 8.0GT/s, device supports 8.0GT/s
mlx4_core 0000:02:00.0: PCIe link width is x8, device supports x8

No clue how to further debug it.

-- 
Benjamin Drung
System Developer
Debian & Ubuntu Developer

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