mongod --storageEngine wiredTiger --repair
2015-02-02T14:58:43.936-0500 I CONTROL  [initandlisten] MongoDB starting : pid=1958 port=27017 dbpath=/data/db 64-bit host=WTCrash
2015-02-02T14:58:43.936-0500 I CONTROL  [initandlisten]
2015-02-02T14:58:43.937-0500 I CONTROL  [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/enabled is 'always'.
2015-02-02T14:58:43.937-0500 I CONTROL  [initandlisten] **        We suggest setting it to 'never'
2015-02-02T14:58:43.937-0500 I CONTROL  [initandlisten]
2015-02-02T14:58:43.937-0500 I CONTROL  [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/defrag is 'always'.
2015-02-02T14:58:43.937-0500 I CONTROL  [initandlisten] **        We suggest setting it to 'never'
2015-02-02T14:58:43.937-0500 I CONTROL  [initandlisten]
2015-02-02T14:58:43.937-0500 I CONTROL  [initandlisten] db version v3.0.0-rc7
2015-02-02T14:58:43.937-0500 I CONTROL  [initandlisten] git version: e4c60053b2967e16f765fa25d16aa6d629faa196
2015-02-02T14:58:43.937-0500 I CONTROL  [initandlisten] build info: Linux build14.nj1.10gen.cc 2.6.32-431.3.1.el6.x86_64 #1 SMP Fri Jan 3 21:39:27 UTC 2014 x86_64 BOOST_LIB_VERSION=1_49
2015-02-02T14:58:43.937-0500 I CONTROL  [initandlisten] allocator: tcmalloc
2015-02-02T14:58:43.937-0500 I CONTROL  [initandlisten] options: { repair: true, storage: { engine: "wiredTiger" } }
2015-02-02T14:58:43.957-0500 W -        [initandlisten] Detected unclean shutdown - /data/db/mongod.lock is not empty.
2015-02-02T14:58:43.957-0500 W STORAGE  [initandlisten] Recovering data from the last clean checkpoint.
2015-02-02T14:58:43.957-0500 I STORAGE  [initandlisten] wiredtiger_open config: create,cache_size=1G,session_max=20000,eviction=(threads_max=4),statistics=(fast),checkpoint=(wait=60,log_size=2GB),statistics_log=(wait=0),
2015-02-02T14:58:43.961-0500 E STORAGE  [initandlisten] WiredTiger (0) [1422907123:961875][1958:0x7f55c79aebc0], file:WiredTiger.wt, connection: read checksum error [4096B @ 28672, 3705540348 != 3545740451]
2015-02-02T14:58:43.962-0500 E STORAGE  [initandlisten] WiredTiger (0) [1422907123:962064][1958:0x7f55c79aebc0], file:WiredTiger.wt, connection: WiredTiger.wt: encountered an illegal file format or internal value
2015-02-02T14:58:43.962-0500 E STORAGE  [initandlisten] WiredTiger (-31804) [1422907123:962166][1958:0x7f55c79aebc0], file:WiredTiger.wt, connection: the process must exit and restart: WT_PANIC: WiredTiger library panic
2015-02-02T14:58:43.962-0500 I -        [initandlisten] Fatal Assertion 28558
2015-02-02T14:58:43.975-0500 I CONTROL  [initandlisten]
 0xf3a9d9 0xee4b21 0xec8f41 0xd50756 0x1363350 0x1363615 0x1363a81 0x12befee 0x12bf488 0x12bc833 0x12c01c6 0x12d6849 0x12fc40b 0x13629c8 0x1330a3b 0x12f9baa 0xd52234 0xd4fd78 0xa6543d 0x7e0237 0x7e5459 0x7f55c65b8ec5 0x7ddf29
----- BEGIN BACKTRACE -----
{"backtrace":[{"b":"400000","o":"B3A9D9"},{"b":"400000","o":"AE4B21"},{"b":"400000","o":"AC8F41"},{"b":"400000","o":"950756"},{"b":"400000","o":"F63350"},{"b":"400000","o":"F63615"},{"b":"400000","o":"F63A81"},{"b":"400000","o":"EBEFEE"},{"b":"400000","o":"EBF488"},{"b":"400000","o":"EBC833"},{"b":"400000","o":"EC01C6"},{"b":"400000","o":"ED6849"},{"b":"400000","o":"EFC40B"},{"b":"400000","o":"F629C8"},{"b":"400000","o":"F30A3B"},{"b":"400000","o":"EF9BAA"},{"b":"400000","o":"952234"},{"b":"400000","o":"94FD78"},{"b":"400000","o":"66543D"},{"b":"400000","o":"3E0237"},{"b":"400000","o":"3E5459"},{"b":"7F55C6597000","o":"21EC5"},{"b":"400000","o":"3DDF29"}],"processInfo":{ "mongodbVersion" : "3.0.0-rc7", "gitVersion" : "e4c60053b2967e16f765fa25d16aa6d629faa196", "uname" : { "sysname" : "Linux", "release" : "3.13.0-32-generic", "version" : "#57-Ubuntu SMP Tue Jul 15 03:51:08 UTC 2014", "machine" : "x86_64" }, "somap" : [ { "elfType" : 2, "b" : "400000" }, { "b" : "7FFFCAAFE000", "elfType" : 3 }, { "b" : "7F55C7589000", "path" : "/lib/x86_64-linux-gnu/libpthread.so.0", "elfType" : 3 }, { "b" : "7F55C7381000", "path" : "/lib/x86_64-linux-gnu/librt.so.1", "elfType" : 3 }, { "b" : "7F55C717D000", "path" : "/lib/x86_64-linux-gnu/libdl.so.2", "elfType" : 3 }, { "b" : "7F55C6E79000", "path" : "/usr/lib/x86_64-linux-gnu/libstdc++.so.6", "elfType" : 3 }, { "b" : "7F55C6B73000", "path" : "/lib/x86_64-linux-gnu/libm.so.6", "elfType" : 3 }, { "b" : "7F55C695D000", "path" : "/lib/x86_64-linux-gnu/libgcc_s.so.1", "elfType" : 3 }, { "b" : "7F55C6597000", "path" : "/lib/x86_64-linux-gnu/libc.so.6", "elfType" : 3 }, { "b" : "7F55C77A7000", "path" : "/lib64/ld-linux-x86-64.so.2", "elfType" : 3 } ] }}
 mongod(_ZN5mongo15printStackTraceERSo+0x29) [0xf3a9d9]
 mongod(_ZN5mongo10logContextEPKc+0xE1) [0xee4b21]
 mongod(_ZN5mongo13fassertFailedEi+0x61) [0xec8f41]
 mongod(+0x950756) [0xd50756]
 mongod(+0xF63350) [0x1363350]
 mongod(__wt_err+0x95) [0x1363615]
 mongod(__wt_panic+0x21) [0x1363a81]
 mongod(__wt_block_extlist_read+0x6E) [0x12befee]
 mongod(__wt_block_extlist_read_avail+0x28) [0x12bf488]
 mongod(__wt_block_checkpoint_load+0x193) [0x12bc833]
 mongod(+0xEC01C6) [0x12c01c6]
 mongod(__wt_btree_open+0xB69) [0x12d6849]
 mongod(__wt_conn_btree_get+0x19B) [0x12fc40b]
 mongod(__wt_session_get_btree+0x2D8) [0x13629c8]
 mongod(__wt_metadata_open+0x2B) [0x1330a3b]
 mongod(wiredtiger_open+0xECA) [0x12f9baa]
 mongod(_ZN5mongo18WiredTigerKVEngineC1ERKSsS2_bb+0x304) [0xd52234]
 mongod(+0x94FD78) [0xd4fd78]
 mongod(_ZN5mongo23GlobalEnvironmentMongoD22setGlobalStorageEngineERKSs+0x30D) [0xa6543d]
 mongod(_ZN5mongo13initAndListenEi+0x6F7) [0x7e0237]
 mongod(main+0x139) [0x7e5459]
 libc.so.6(__libc_start_main+0xF5) [0x7f55c65b8ec5]
 mongod(+0x3DDF29) [0x7ddf29]
-----  END BACKTRACE  -----
2015-02-02T14:58:43.976-0500 I -        [initandlisten]

***aborting after fassert() failure