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</o:shapelayout></xml><![endif]--></head><body lang=EN-GB link=blue vlink=purple><div class=WordSection1><p class=MsoNormal>Hello,<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>We are currently using lustre 1.8.1.1 and using kernel version 2.6.18_128.7.1.el5_lustre.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>We are experiencing problems when performing reads of large files from my lustre filesystem, small reads are not affected.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>The read process hangs and the following message is reported in /var/log/messages:<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Feb 22 15:59:38 leopard kernel: LustreError: 11-0: an error occurred while communicating with 192.168.13.200@o2ib. The obd_ping operation failed with -107<o:p></o:p></p><p class=MsoNormal>Feb 22 15:59:38 leopard kernel: Lustre: lustre-OST0000-osc-ffff81067e0eac00: Connection to service lustre-OST0000 via nid 192.168.13.200@o2ib was lost; in progress operations using this service will wait for recovery to complete.<o:p></o:p></p><p class=MsoNormal>Feb 22 15:59:38 leopard kernel: LustreError: 6811:0:(import.c:939:ptlrpc_connect_interpret()) lustre-OST0000_UUID went back in time (transno 476754140074 was previously committed, server now claims 0)! See https://bugzilla.lustre.org/show_bug.cgi?id=9646 <o:p></o:p></p><p class=MsoNormal>Feb 22 15:59:38 leopard kernel: LustreError: 167-0: This client was evicted by lustre-OST0000; in progress operations using this service will fail.<o:p></o:p></p><p class=MsoNormal>Feb 22 15:59:38 leopard kernel: Lustre: lustre-OST0000-osc-ffff81067e0eac00: Connection restored to service lustre-OST0000 using nid 192.168.13.200@o2ib.<o:p></o:p></p><p class=MsoNormal>Feb 22 15:59:38 leopard kernel: LustreError: 17592:0:(lov_request.c:196:lov_update_enqueue_set()) enqueue objid 0x18f87222 subobj 0x4d0c9f on OST idx 0: rc -5<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I have checked the bugzilla report but we have not had a disk crash and the system was not restarted. Could this be an underlying hardware problem that’s not getting logged?<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Any additional help on this matter would be much appreciated.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Kind Regards<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Chris<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>