[DRBD-user] drbd r0: sock_create_kern failed, err = -97

[Holger Kiehl]

On Tue, 3 Mar 2020, Robert Altnoeder wrote:

> On 2/28/20 8:54 PM, Holger Kiehl wrote:
> > [...]
> >    kernel: drbd r0: conn( Unconnected -> WFConnection ) 
> >    kernel: drbd r0: sock_create_kern failed, err = -97
> >    kernel: drbd r0: conn( WFConnection -> Disconnecting ) 
> >    kernel: drbd r0: Connection closed
> > [...]
> >
> > What is this 'sock_create_kern failed, err = -97' error?
> 
> This is just a spontaneous guess, but since most errors reported by the
> kernel are some "errno" error code, and the Linux kernel uses (0 -
> errno) instead of errno, this probably reports errno = 97, which appears
> to be "Address family not supported by protocol".
> 
Thanks! That seems to be the case. This is a Mellanox ConnectX-6 card and
a colleague just found out the Mellanox no longer supports the SDP protocol
and we must try RDMA.

But this is not in the kernel since is is stuck at 8.4.11. So we will try it
with kernel module from the 9.x source.

Again, thanks for the hint!

Regards,
Holger