Re: How to use SMB Direct

[Xiaoli Feng <xifeng@redhat.com>]

Hello Tom,

Then I try to use IP to mount, it show this error:
[79912.177783] CIFS VFS: _smbd_get_connection:1740 rdma_connect failed port=5445
[79912.220723] CIFS VFS: _smbd_get_connection:1740 rdma_connect failed port=445

Client:
$ mount //172.31.0.250/cifs cifs -o user=root,password=redhat,rdma
mount error(2): No such file or directory
Refer to the mount.cifs(8) manual page (e.g. man mount.cifs)

Server:
$ ib addr |grep 172.31.0.250/
mlx4_ib0:		Link UP, Interface UP	172.31.0.250/24

Samba version is 4.11.2. And firewalld is stopped.

----- Original Message -----
> From: "Tom Talpey" <ttalpey@microsoft.com>
> To: "Xiaoli Feng" <xifeng@redhat.com>, linux-cifs@vger.kernel.org
> Sent: Tuesday, December 17, 2019 1:11:24 AM
> Subject: RE: How to use SMB Direct
> 
> > -----Original Message-----
> > From: linux-cifs-owner@vger.kernel.org <linux-cifs-owner@vger.kernel.org>
> > On
> > Behalf Of Xiaoli Feng
> > Sent: Monday, December 16, 2019 10:30 AM
> > To: linux-cifs@vger.kernel.org
> > Subject: [EXTERNAL] How to use SMB Direct
> > 
> > Hello guys,
> > 
> > I'd like to test SMB Direct. But it's failed. I'm not sure if it works in
> > upstream.
> > I setup samba server on one rdma machine with 5.5.0-rc1+ kernel. The
> > smb.conf is:
> > [cifs]
> > path=/mnt/cifs
> > writeable=yes
> > 
> > Then I try to mount the share on another rdma machine with 5.5.0-rc1+
> > kernel.
> >    mount //$RDMA/cifs cifs -o user=root,password=$password,rdma
> > 
> > It's failed because of "CIFS VFS: smbd_create_id:614 rdma_resolve_addr()
> > completed -113"
> 
> Errno 113 is "no route to host". Sounds like a network or address issue.
> 
> Tom.
> 
> > Does SMB Direct work fine in upstream?
> > 
> > Thanks.
> > 
> > $ cat /boot/config-5.5.0-rc1+ |grep SMB_DIRECT
> > CONFIG_CIFS_SMB_DIRECT=y
> > $ ibstat
> > CA 'mlx4_0'
> > 	CA type: MT4099
> > 	Number of ports: 2
> > 	Firmware version: 2.42.5000
> > 	Hardware version: 1
> > 	Node GUID: 0xf4521403007be0e0
> > 	System image GUID: 0xf4521403007be0e3
> > 	Port 1:
> > 		State: Active
> > 		Physical state: LinkUp
> > 		Rate: 56
> > 		Base lid: 29
> > 		LMC: 0
> > 		SM lid: 1
> > 		Capability mask: 0x0259486a
> > 		Port GUID: 0xf4521403007be0e1
> > 		Link layer: InfiniBand
> > 	Port 2:
> > 		State: Active
> > 		Physical state: LinkUp
> > 		Rate: 40
> > 		Base lid: 44
> > 		LMC: 1
> > 		SM lid: 36
> > 		Capability mask: 0x02594868
> > 		Port GUID: 0xf4521403007be0e2
> > 		Link layer: InfiniBand
> > 
> > 
> > --
> > Best regards!
> > XiaoLi Feng 冯小丽
> > 
> > Red Hat Software (Beijing) Co.,Ltd
> > filesystem-qe Team
> > IRC:xifeng，#channel: fs-qe
> > Tel:+86-10-8388112
> > 9/F, Raycom
> 
>