[Gluster-users] "tcp connect to failed" messages

[Joe Julian]

On 05/29/2013 11:42 PM, Iain Buchanan wrote:
> Thanks Joe,
>
> I tried mounting with the ".rdma" suffix after creating using 
> "transport tcp,rdma" and I get the same "tcp connect to  failed" 
> messages in the log - I'm using the version from the semiosis PPA at 
> https://launchpad.net/~semiosis/+archive/ubuntu-glusterfs-3.3
>
> Looking at the dates on there I don't think it includes this fix.  
> I've sent the maintainer a message asking if they could update it.  In 
> the meantime would Niels de Vos' workaround work?  (Setting 
> transport.rdma.listen-port to 24008 in the glusterd.vol?)

Yes, I had someone else try that and it worked. Remember, any changes 
made to the volume through the CLI will reset that configuration, 
causing it to stop working until you edit again.

>
> Iain
>
> On 05/30/13 07:06, Joe Julian wrote:
>> On 05/29/2013 10:33 PM, Iain Buchanan wrote:
>>> Hi,
>>>
>>> I'm running GlusterFS 3.3.1-ubuntu1~precise9 and I'm having some 
>>> problems with the "rdma" and "tcp,rdma" options I hope someone can 
>>> help me with.
>>>
>>> 1. What does "tcp,rdma" actually do - does it let you mix both types 
>>> of client?  (I did a few tests with iozone and found it gave 
>>> identical performance to the "tcp".)
>>>
>>> 2. I can't get "rdma" to work, even in the simplest case with a 
>>> single node.
>>> volume create storage transport transport rdma my_server:/data/area
>>> volume start storage
>>> mount -t glusterfs my_server:storage /mnt/storage
>>>
>>> The last line hangs.  Looking in /var/log/glusterfs I can see the 
>>> log for the volume:
>>>
>>> [2013-05-30 06:24:19.605315] E [rdma.c:4604:tcp_connect_finish] 
>>> 0-storage-client-0: *tcp connect to  failed (Connection refused)*
>>> [2013-05-30 06:24:19.605713] W [rdma.c:4187:gf_rdma_disconnect] 
>>> (-->/usr/sbin/glusterfs(main+0x34d) [0x7f374d38a3ed] 
>>> (-->/usr/lib/libglusterfs.so.0(+0x3bd17) [0x7f374cf23d17] 
>>> (-->/usr/lib/glusterfs/3.3.1/rpc-transport/rdma.so(+0x5231) 
>>> [0x7f3743398231]))) 0-storage-client-0: disconnect called (peer:)
>>> [2013-05-30 06:24:19.605763] W 
>>> [rdma.c:4521:gf_rdma_handshake_pollerr] 
>>> (-->/usr/sbin/glusterfs(main+0x34d) [0x7f374d38a3ed] 
>>> (-->/usr/lib/libglusterfs.so.0(+0x3bd17) [0x7f374cf23d17] 
>>> (-->/usr/lib/glusterfs/3.3.1/rpc-transport/rdma.so(+0x5150) 
>>> [0x7f3743398150]))) 0-rpc-transport/rdma: storage-client-0: peer () 
>>> disconnected, cleaning up
>>>
>>> This block repeats every few seconds - the line "tcp connect to 
>>>  failed" looks like it has lost the server name somehow?
>>>
>>> Iain
>>>
>> If you've installed from the yum repo (http://goo.gl/s077x) that 
>> shouldn't be happening. kkeithley applied the patch. If not, rdma's 
>> broken in 3.3.[01]. https://bugzilla.redhat.com/show_bug.cgi?id=849122
>>
>> To mount via rdma when using tcp,rdma, mount -t glusterfs 
>> server1:myvol.rdma /mnt/foo
>>
>>

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