Hi Matthew, On Fri, 9 Aug 2013 09:11:07 +0200 Matthew Anderson <manderson8787@xxxxxxxxx> wrote: > So I've had a chance to re-visit this since Bécholey Alexandre was > kind enough to let me know how to compile Ceph with the RDMACM > library (thankyou again!). > > At this stage it compiles and runs but there appears to be a problem > with calling rshutdown in Pipe as it seems to just wait forever for > the pipe to close which causes commands like 'ceph osd tree' to hang > indefinitely after they work successfully. Debug MS is here - > http://pastebin.com/WzMJNKZY > I am currently looking at a very similar problem. My test setup is to start ceph-mon monitors and check their state using "ceph mon stat". The monitors (3 instances) and the "ceph mon stat" command are started with LD_PRELOAD=<path to librspreload.so>. The behaviour is that the "ceph mon stat" command connects, sends the request and receives the answer, which shows a healthy state for the monitors. But the "ceph mon stat" does not terminate. On the monitor end I encounter an EOPNOTSUPP being set at the time the connection shall terminate. This is detected in the Pipe::tcp_read_wait() where the socket is poll'ed for IN and HUP events. What I have found out already is that it is not the poll() / rpoll() which set the error: they do return a HUP event and are happy. As far as I can tell, the fact of the EOPNOTSUPP being set is historical at that point, i.e. it must have been set at some earlier stage. I am using ceph v0.61.7. Best Regards Andreas > I also tried RADOS bench but it appears to be doing something > similar. Debug MS is here - http://pastebin.com/3aXbjzqS > > It seems like it's very close to working... I must be missing > something small that's causing some grief. You can see the OSD coming > up in the ceph monitor and the PG's all become active+clean. When > shutting down the monitor I get the below which show's it waiting for > the pipes to close - > > 2013-08-09 15:08:31.339394 7f4643cfd700 20 accepter.accepter closing > 2013-08-09 15:08:31.382075 7f4643cfd700 10 accepter.accepter stopping > 2013-08-09 15:08:31.382115 7f464bd397c0 20 -- 172.16.0.1:6789/0 wait: > stopped accepter thread 2013-08-09 15:08:31.382127 7f464bd397c0 20 -- > 172.16.0.1:6789/0 wait: stopping reaper thread 2013-08-09 > 15:08:31.382146 7f4645500700 10 -- 172.16.0.1:6789/0 reaper_entry > done 2013-08-09 15:08:31.382182 7f464bd397c0 20 -- 172.16.0.1:6789/0 > wait: stopped reaper thread 2013-08-09 15:08:31.382194 7f464bd397c0 > 10 -- 172.16.0.1:6789/0 wait: closing pipes 2013-08-09 > 15:08:31.382200 7f464bd397c0 10 -- 172.16.0.1:6789/0 reaper > 2013-08-09 15:08:31.382205 7f464bd397c0 10 -- 172.16.0.1:6789/0 > reaper done 2013-08-09 15:08:31.382210 7f464bd397c0 10 -- > 172.16.0.1:6789/0 wait: waiting for pipes > 0x3014c80,0x3015180,0x3015400 to close > > The git repo has been updated if anyone has a few spare minutes to > take a look - https://github.com/funkBuild/ceph-rsockets > > Thanks again > -Matt > > > > > > On Thu, Jun 20, 2013 at 5:09 PM, Matthew Anderson > <manderson8787@xxxxxxxxx> wrote: Hi All, > > I've had a few conversations on IRC about getting RDMA support into > Ceph and thought I would give it a quick attempt to hopefully spur > some interest. What I would like to accomplish is an RSockets only > implementation so I'm able to use Ceph, RBD and QEMU at full speed > over an Infiniband fabric. > > What I've tried to do is port Pipe.cc and Acceptor.cc to rsockets by > replacing the regular socket calls with the rsocket equivalent. > Unfortunately it doesn't compile and I get an error of - > > CXXLD ceph-osd > ./.libs/libglobal.a(libcommon_la-Accepter.o): In function > `Accepter::stop()': /home/matt/Desktop/ceph-0.61.3-rsockets/src/msg/Accepter.cc:243: > undefined reference to > `rshutdown' /home/matt/Desktop/ceph-0.61.3-rsockets/src/msg/Accepter.cc:251: > undefined reference to > `rclose' ./.libs/libglobal.a(libcommon_la-Accepter.o): In function > `Accepter::entry()': /home/matt/Desktop/ceph-0.61.3-rsockets/src/msg/Accepter.cc:213: > undefined reference to > `raccept' /home/matt/Desktop/ceph-0.61.3-rsockets/src/msg/Accepter.cc:230: > undefined reference to > `rclose' ./.libs/libglobal.a(libcommon_la-Accepter.o): In function > `Accepter::bind(entity_addr_t const&, int, > int)': /home/matt/Desktop/ceph-0.61.3-rsockets/src/msg/Accepter.cc:61: > undefined reference to > `rsocket' /home/matt/Desktop/ceph-0.61.3-rsockets/src/msg/Accepter.cc:80: > undefined reference to > `rsetsockopt' /home/matt/Desktop/ceph-0.61.3-rsockets/src/msg/Accepter.cc:87: > undefined reference to > `rbind' /home/matt/Desktop/ceph-0.61.3-rsockets/src/msg/Accepter.cc:118: > undefined reference to > `rgetsockname' /home/matt/Desktop/ceph-0.61.3-rsockets/src/msg/Accepter.cc:128: > undefined reference to > `rlisten' /home/matt/Desktop/ceph-0.61.3-rsockets/src/msg/Accepter.cc:100: > undefined reference to > `rbind' /home/matt/Desktop/ceph-0.61.3-rsockets/src/msg/Accepter.cc:87: > undefined reference to > `rbind' ./.libs/libglobal.a(libcommon_la-Pipe.o): In function > `Pipe::tcp_write(char const*, > int)': /home/matt/Desktop/ceph-0.61.3-rsockets/src/msg/Pipe.cc:2175: > undefined reference to > `rsend' /home/matt/Desktop/ceph-0.61.3-rsockets/src/msg/Pipe.cc:2162: > undefined reference to > `rshutdown' ./.libs/libglobal.a(libcommon_la-Pipe.o): In function > `Pipe::do_sendmsg(msghdr*, int, > bool)': /home/matt/Desktop/ceph-0.61.3-rsockets/src/msg/Pipe.cc:1867: > undefined reference to > `rsendmsg' ./.libs/libglobal.a(libcommon_la-Pipe.o): In function > `Pipe::tcp_read_nonblocking(char*, > int)': /home/matt/Desktop/ceph-0.61.3-rsockets/src/msg/Pipe.cc:2129: > undefined reference to > `rrecv' ./.libs/libglobal.a(libcommon_la-Pipe.o): In function > `Pipe::tcp_read(char*, > int)': /home/matt/Desktop/ceph-0.61.3-rsockets/src/msg/Pipe.cc:2079: > undefined reference to > `rshutdown' ./.libs/libglobal.a(libcommon_la-Pipe.o): In function > `Pipe::connect()': /home/matt/Desktop/ceph-0.61.3-rsockets/src/msg/Pipe.cc:768: > undefined reference to > `rclose' /home/matt/Desktop/ceph-0.61.3-rsockets/src/msg/Pipe.cc:773: > undefined reference to > `rsocket' /home/matt/Desktop/ceph-0.61.3-rsockets/src/msg/Pipe.cc:781: > undefined reference to > `rconnect' ./.libs/libglobal.a(libcommon_la-Pipe.o): In function > `Pipe::writer()': /home/matt/Desktop/ceph-0.61.3-rsockets/src/msg/Pipe.cc:1471: > undefined reference to `rwrite' collect2: error: ld returned 1 exit > status make[3]: *** [ceph-mon] Error 1 > > > > From the looks of it I need to include the 'rdma/rsocket.h' library > somewhere else or add librdmacm but I'm not sure where. > > Full disclaimer, I am terrible at C++. If anyone has a few spare > minutes to have a look into the error messages and can point out > where I've gone wrong it would be greatly appreciated. > > I've put the code up at - https://github.com/funkBuild/ceph-rsockets > > Thanks again > -Matt > > > -- Andreas Bluemle mailto:Andreas.Bluemle@xxxxxxxxxxx Heinrich Boell Strasse 88 Phone: (+49) 89 4317582 D-81829 Muenchen (Germany) Mobil: (+49) 177 522 0151 _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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