I have a database that has about 4 GB of data, and when I try to reset it using mongodump, then it only dumps something around 1.93 GB. And when I try to clone its db.copyDatabase() , then it copies the same amount of data as mongodump.
Is there any limit in MongoDb?
Thanks for the help and sorry for my poor English (I hope you understand me).
EDIT
{ "ns" : "some-db.persons", "firstExtent" : "0:31000 ns:some-db.persons", "lastExtent" : "4:b50d000 ns:some-db.persons", "extentCount" : 13, "extents" : [ { "loc" : "0:31000", "xnext" : "0:42000", "xprev" : "null", "nsdiag" : "some-db.persons", "size" : 32768, "firstRecord" : "0:310b0", "lastRecord" : "0:38e3c" }, { "loc" : "0:42000", "xnext" : "0:62000", "xprev" : "0:31000", "nsdiag" : "some-db.persons", "size" : 131072, "firstRecord" : "0:420b0", "lastRecord" : "0:61e64" }, { "loc" : "0:62000", "xnext" : "0:e2000", "xprev" : "0:42000", "nsdiag" : "some-db.persons", "size" : 524288, "firstRecord" : "0:620b0", "lastRecord" : "0:e0f0c" }, { "loc" : "0:e2000", "xnext" : "0:372000", "xprev" : "0:62000", "nsdiag" : "some-db.persons", "size" : 2097152, "firstRecord" : "0:e20b0", "lastRecord" : "0:2e1d94" }, { "loc" : "0:372000", "xnext" : "0:dd6000", "xprev" : "0:e2000", "nsdiag" : "some-db.persons", "size" : 8388608, "firstRecord" : "0:3720b0", "lastRecord" : "0:b71e80" }, { "loc" : "0:dd6000", "xnext" : "0:2233000", "xprev" : "0:372000", "nsdiag" : "some-db.persons", "size" : 11325440, "firstRecord" : "0:dd60b0", "lastRecord" : "0:18a2db8" }, { "loc" : "0:2233000", "xnext" : "1:2000", "xprev" : "0:dd6000", "nsdiag" : "some-db.persons", "size" : 15290368, "firstRecord" : "0:22330b0", "lastRecord" : "0:30c7e20" }, { "loc" : "1:2000", "xnext" : "1:223d000", "xprev" : "0:2233000", "nsdiag" : "some-db.persons", "size" : 20643840, "firstRecord" : "1:20b0", "lastRecord" : "1:13b1e9c" }, { "loc" : "1:223d000", "xnext" : "2:2000", "xprev" : "1:2000", "nsdiag" : "some-db.persons", "size" : 27869184, "firstRecord" : "1:223d0b0", "lastRecord" : "1:3cd0e7c" }, { "loc" : "2:2000", "xnext" : "2:73ba000", "xprev" : "1:223d000", "nsdiag" : "some-db.persons", "size" : 37625856, "firstRecord" : "2:20b0", "lastRecord" : "2:23e3dd8" }, { "loc" : "2:73ba000", "xnext" : "3:4bd7000", "xprev" : "2:2000", "nsdiag" : "some-db.persons", "size" : 50798592, "firstRecord" : "2:73ba0b0", "lastRecord" : "2:a42be78" }, { "loc" : "3:4bd7000", "xnext" : "4:b50d000", "xprev" : "2:73ba000", "nsdiag" : "some-db.persons", "size" : 68579328, "firstRecord" : "3:4bd70b0", "lastRecord" : "3:8d3dda4" }, { "loc" : "4:b50d000", "xnext" : "null", "xprev" : "3:4bd7000", "nsdiag" : "some-db.persons", "size" : 92581888, "firstRecord" : "4:b50d0b0", "lastRecord" : "4:ba17118" } ], "datasize" : 244286608, "nrecords" : 268872, "lastExtentSize" : 92581888, "padding" : 1, "firstExtentDetails" : { "loc" : "0:31000", "xnext" : "0:42000", "xprev" : "null", "nsdiag" : "some-db.persons", "size" : 32768, "firstRecord" : "0:310b0", "lastRecord" : "0:38e3c" }, "lastExtentDetails" : { "loc" : "4:b50d000", "xnext" : "null", "xprev" : "3:4bd7000", "nsdiag" : "some-db.persons", "size" : 92581888, "firstRecord" : "4:b50d0b0", "lastRecord" : "4:ba17118" }, "objectsFound" : 218678, "invalidObjects" : 0, "bytesWithHeaders" : 207046812, "bytesWithoutHeaders" : 203547964, "deletedCount" : 6, "deletedSize" : 87297536, "nIndexes" : 1, "keysPerIndex" : { "some-db.persons.$_id_" : 268872 }, "valid" : true, "errors" : [ ], "ok" : 1 }