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

[Iain Buchanan]

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?)

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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