we setup mongo servers on two machine.All mongod run with journal option.

machine_1 : 4 mongod, 2 config server, mongos.
machine_2 : 4 mongod, 1 config server.

Run command db.stats()get following output:

mongos> db.stats()
{
"raw" : {
"192.168.129.244:10000" :

{ "db" : "00110412", "collections" : 3, "objects" : 20218, "avgObjSize" : 221103.14116134137, "dataSize" : 4470263308, "storageSize" : 4629549008, "numExtents" : 31, "indexes" : 2, "indexSize" : 2093056, "fileSize" : 5886181376, "nsSizeMB" : 16, "ok" : 1 }

,
"192.168.129.244:15000" :

{ "db" : "00110412", "collections" : 3, "objects" : 20616, "avgObjSize" : 221635.25126115637, "dataSize" : 4569232340, "storageSize" : 4629549008, "numExtents" : 31, "indexes" : 2, "indexSize" : 2142112, "fileSize" : 5886181376, "nsSizeMB" : 16, "ok" : 1 }

,
"192.168.129.244:20000" :

{ "errmsg" : "exception: assertion db/pdfile.h:300", "code" : 0, "ok" : 0 }

,
"192.168.129.244:25000" :

{ "errmsg" : "exception: assertion db/pdfile.h:300", "code" : 0, "ok" : 0 }

,
"192.168.129.245:40000" :

{ "errmsg" : "exception: assertion db/pdfile.h:300", "code" : 0, "ok" : 0 }

,
"192.168.129.245:45000" :

{ "errmsg" : "exception: assertion db/pdfile.h:300", "code" : 0, "ok" : 0 }

,
"192.168.129.245:50000" :

{ "errmsg" : "exception: assertion db/pdfile.h:300", "code" : 0, "ok" : 0 }

,
"192.168.129.245:55000" :

{ "db" : "00110412", "collections" : 3, "objects" : 1337, "avgObjSize" : 92868.35302916978, "dataSize" : 124164988, "storageSize" : 128385024, "numExtents" : 12, "indexes" : 2, "indexSize" : 138992, "fileSize" : 335544320, "nsSizeMB" : 16, "ok" : 1 }

},
"ok" : 0,
"errmsg" : "

{ 192.168.129.244:20000: \"exception: assertion db/pdfile.h:300\", 192.168.129.244:25000: \"exception: assertion db/pdfile.h:300\", 192.168.129.245:40000: \"exception: assertion db/pdfile.h:300\", 192.168.129.245:45000: \"exception: assertion db/pdfile.h:300\", 192.168.129.245:50000: \"exception: assertion db/pdfile.h:300\" }

"
}

please help me to solve above error

Thanks in advance
jitendra verma.