m31000| 2015-02-12T16:46:52.012-0500 I -        [WiredTigerRecordStoreThread for local.oplog.rs] Invariant failure: session->truncate(session, NULL, start, c, NULL) resulted in status UnknownError 2: No such file or directory at src/mongo/db/storage/wiredtiger/wiredtiger_record_store.cpp 511
 m31000| 2015-02-12T16:46:52.015-0500 I CONTROL  [WiredTigerRecordStoreThread for local.oplog.rs] 
 m31000|  0xf5af59 0xf05651 0xeeb966 0xd7bd1b 0xd81564 0xeeca60 0xfa7eb4 0x7f200480b73d 0x7f20039e3d1d
 m31000| ----- BEGIN BACKTRACE -----
 m31000| {"backtrace":[{"b":"400000","o":"B5AF59"},{"b":"400000","o":"B05651"},{"b":"400000","o":"AEB966"},{"b":"400000","o":"97BD1B"},{"b":"400000","o":"981564"},{"b":"400000","o":"AECA60"},{"b":"400000","o":"BA7EB4"},{"b":"7F2004805000","o":"673D"},{"b":"7F2003910000","o":"D3D1D"}],"processInfo":{ "mongodbVersion" : "3.1.0-pre-", "gitVersion" : "6ca5a81e340f96502bc5f530a8a6fa0d44fea052", "uname" : { "sysname" : "Linux", "release" : "2.6.32-431.3.1.el6.x86_64", "version" : "#1 SMP Fri Jan 3 21:39:27 UTC 2014", "machine" : "x86_64" }, "somap" : [ { "elfType" : 2, "b" : "400000" }, { "b" : "7FFFAD413000", "elfType" : 3 }, { "b" : "7F2004805000", "path" : "/lib64/libpthread.so.0", "elfType" : 3 }, { "b" : "7F20045FC000", "path" : "/lib64/librt.so.1", "elfType" : 3 }, { "b" : "7F20043F8000", "path" : "/lib64/libdl.so.2", "elfType" : 3 }, { "b" : "7F20040F8000", "path" : "/usr/lib64/libstdc++.so.6", "elfType" : 3 }, { "b" : "7F2003E75000", "path" : "/lib64/libm.so.6", "elfType" : 3 }, { "b" : "7F2003C67000", "path" : "/lib64/libgcc_s.so.1", "elfType" : 3 }, { "b" : "7F2003910000", "path" : "/lib64/libc.so.6", "elfType" : 3 }, { "b" : "7F2004A20000", "path" : "/lib64/ld-linux-x86-64.so.2", "elfType" : 3 } ] }}
 m31000|  mongod(_ZN5mongo15printStackTraceERSo+0x29) [0xf5af59]
 m31000|  mongod(_ZN5mongo10logContextEPKc+0xE1) [0xf05651]
 m31000|  mongod(_ZN5mongo17invariantOKFailedEPKcRKNS_6StatusES1_j+0xE6) [0xeeb966]
 m31000|  mongod(_ZN5mongo21WiredTigerRecordStore27cappedDeleteAsNeeded_inlockEPNS_16OperationContextERKNS_8RecordIdE+0x6FB) [0xd7bd1b]
 m31000|  mongod(+0x981564) [0xd81564]
 m31000|  mongod(_ZN5mongo13BackgroundJob7jobBodyEv+0x120) [0xeeca60]
 m31000|  mongod(+0xBA7EB4) [0xfa7eb4]
 m31000|  libpthread.so.0(+0x673D) [0x7f200480b73d]
 m31000|  libc.so.6(clone+0x6D) [0x7f20039e3d1d]
 m31000| -----  END BACKTRACE  -----