On Thu, 2008-09-04 at 22:58 -0400, Brock Palen wrote: > I am having clients lose their connection to the MDS. Messages on > the clients look like this: > > Sep 4 19:51:30 nyx-login2 kernel: Lustre: nobackup-MDT0000- > mdc-00000101fc44e800: Connection to service nobackup-MDT0000 via nid > [EMAIL PROTECTED] was lost; in progress operations using this service > will wait for recovery to complete. > Sep 4 19:51:30 nyx-login2 kernel: LustreError: 11-0: an error > occurred while communicating with [EMAIL PROTECTED] The mds_connect > operation failed with -16 > > It will keep doing this trying to connect and spiting out mds_connect > failed -16. The clients never recover. > > On the mds all I see is: > > Lustre: 7653:0:(ldlm_lib.c:760:target_handle_connect()) nobackup- > MDT0000: refuse reconnection from 618cf36e-a7a6- > [EMAIL PROTECTED]@tcp to 0x000001037c109000; still > busy with 3 active RPCs > > This is common between many hosts that I get this RPC message. > > Clients and servers are all using TCP. > > Is this enough information?
Probably. If you are running 1.6.5, try disabling statahead on all of your clients... # echo 0 > /proc/fs/lustre/.../statahead_max Of course, this setting goes back to it's default of 32 on a reboot. b.
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