Is the client supposed to have an IB interface configured, or is it just 
supposed to mount over ethernet?

--
Rick Mohr
Senior HPC System Administrator
National Institute for Computational Sciences
http://www.nics.tennessee.edu


> On Jul 20, 2016, at 2:09 PM, sohamm <[email protected]> wrote:
> 
> Hi 
> 
> Any guidance/help on this is greatly appreciated.
> 
> Thanks
> 
> On Mon, Jul 18, 2016 at 7:25 PM, sohamm <[email protected]> wrote:
> Hi Ben
> Both the networks have netmasks of value 255.255.255.0
> 
> Thanks
> 
> On Mon, Jul 18, 2016 at 10:08 AM, Ben Evans <[email protected]> wrote:
> What do your netmasks look like on each network?
> 
> From: lustre-discuss <[email protected]> on behalf of 
> sohamm <[email protected]>
> Date: Monday, July 18, 2016 at 1:56 AM
> To: "[email protected]" <[email protected]>
> Subject: Re: [lustre-discuss] lustre-discuss Digest, Vol 124, Issue 17
> 
> Hi Thomas
> Below are the results of the commands you suggested.
> 
> From Client
> [root@dev1 ~]# lctl ping 192.168.200.52@o2ib
> failed to ping 192.168.200.52@o2ib: Input/output error
> [root@dev1 ~]# lctl ping 192.168.111.52@tcp
> 12345-0@lo
> 12345-192.168.200.52@o2ib
> 12345-192.168.111.52@tcp
> [root@dev1 ~]# mount -t lustre 192.168.111.52@tcp:/mylustre /lustre
> mount.lustre: mount 192.168.111.52@tcp:/mylustre at /lustre failed: 
> Input/output error
> Is the MGS running?
> mount: mounting 192.168.111.52@tcp:/mylustre on /lustre failed: Invalid 
> argument
> 
> cat /var/log/messages | tail
> Jul 18 01:37:04 dev1 user.warn kernel: [2250504.401397] ib1: multicast join 
> failed for ff12:401b:ffff:0000:0000:0000:ffff:ffff, status -22
> Jul 18 01:37:26 dev1 user.warn kernel: [2250526.257309] LNet: No route to 
> 12345-192.168.200.52@o2ib via <?> (all routers down)
> Jul 18 01:37:36 dev1 user.warn kernel: [2250536.481862] ib1: multicast join 
> failed for ff12:401b:ffff:0000:0000:0000:ffff:ffff, status -22
> Jul 18 01:41:53 dev1 user.warn kernel: [2250792.947299] LNet: No route to 
> 12345-192.168.200.52@o2ib via <?> (all routers down)
> 
> 
> From MGS
> [root@lustre_mgs01_vm03 ~]# lctl ping 192.168.111.102@tcp
> 12345-0@lo
> 12345-192.168.111.102@tcp
> 
> Please let me know what else i can try. Looks like i am missing something 
> with the ib config? Do i need router setup as part of lnet ?
> if i am able to ping mgs from client on the tcp network, it should still work 
> ?
> 
> Thanks
> 


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