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

[Joe Julian]

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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