Ms. Megan Larko
2008-Aug-11 17:47 UTC
[Lustre-discuss] testing hw for lustre--mounting as client on ost
Hello, In trying to create a lustre filesystem on some new hardware I did some benchmarks on the hw as ext3. Now I am trying to benchmark with the same bonnie parameters under lustre. I am trying to keep the test on the new hardware and off of the live system with the exception of the mgs which I am using with a new disk as mdt to benchmark. I have found that I cannot mount the disks as a client on the oss to which those disks are mounted/connected. I get a timeout Lustre Error 11-0 and many processes of [root at oss4 ~]# ps -ef | grep ost root 12880 1 0 12:25 ? 00:00:00 [ll_ost_00] root 12881 1 0 12:25 ? 00:00:00 [ll_ost_01] root 12882 1 0 12:25 ? 00:00:00 [ll_ost_02] root 12883 1 0 12:25 ? 00:00:00 [ll_ost_03] Andreas response to the same error of another poster in Sep 2007 said that high load can prevent the oss from mounting its own disks as a client. I have no load on this new, non-live oss other than the small test volumes I have set-up. There is no other load. Can it not be done because the ip-traffic (on o2ib in my case) just conflicts? megan ****************** Andreas original response to the error *********************** On Sep 03, 2007 20:13 +0300, vorl wrote:> Sep 3 19:44:58 snapxtc3 kernel: Lustre: > 3631:0:(ldlm_lib.c:724:target_handle_connect()) snapxtfs-OST0000: refuse > reconnection from d9f5edc9-a349-4483-5c2f-7fdeaae46d60 at 0@lo to > 0xffff81012963d000/3Running clients and servers on the same node can deadlock under high load. Cheers, Andreas -- Andreas Dilger Principal Software Engineer Cluster File Systems, Inc. ****************** Andreas original response to the error ***********************