我试图debugging一个奇怪的问题，导致失败或一副副本过时，无法赶上主（在AWS，AWS上运行）的副本集。
典型的复制延迟<1秒。
似乎有一个与二级变得过时相关，主要用尽日志空间，即/ var / log / mongodb /。
oplog存储在不同的驱动器上，并具有> 50GB的可用空间。
问题：主服务器创build日志失败会导致复制失败吗？ 我一直无法find任何文件或在网上可以证实这一点。
编辑以添加db.printReplicationInfo（）的输出：
rs0:PRIMARY> db.printReplicationInfo() configured oplog size: 30720MB log length start to end: 2238secs (0.62hrs) oplog first event time: Mon Nov 09 2015 16:36:13 GMT+0000 (UTC) oplog last event time: Mon Nov 09 2015 17:13:31 GMT+0000 (UTC) now: Mon Nov 09 2015 17:13:31 GMT+0000 (UTC) 编辑以添加本地db.oplog.rs.stats（）的完整输出：
{ "ns" : "local.oplog.rs", "count" : 197021, "size" : 32227028695, "avgObjSize" : 163571, "storageSize" : 11432701952, "capped" : true, "max" : -1, "maxSize" : NumberLong("32212254720"), "wiredTiger" : { "metadata" : { "formatVersion" : 1, "oplogKeyExtractionVersion" : 1 }, "creationString" : "allocation_size=4KB,app_metadata=(formatVersion=1,oplogKeyExtractionVersion=1),block_allocation=best,block_compressor=snappy,cache_resident=0,checkpoint=(WiredTigerCheckpoint.44462=(addr=\"01e30119f281e455da0eb9e30d626b89e457acebd0e30d627488e4c14bdd50808080e502a9710fc0e502984f4fc0\",order=44462,time=1447092664,size=11145277440,write_gen=190060665)),checkpoint_lsn=(174452,45957760),checksum=on,collator=,columns=,dictionary=0,format=btree,huffman_key=,huffman_value=,id=9,internal_item_max=0,internal_key_max=0,internal_key_truncate=,internal_page_max=4KB,key_format=q,key_gap=10,leaf_item_max=0,leaf_key_max=0,leaf_page_max=32KB,leaf_value_max=64MB,memory_page_max=10m,os_cache_dirty_max=0,os_cache_max=0,prefix_compression=0,prefix_compression_min=4,split_deepen_min_child=0,split_deepen_per_child=0,split_pct=90,value_format=u,version=(major=1,minor=1)", "type" : "file", "uri" : "statistics:table:collection-6-8821970786560075304", "LSM" : { "bloom filters in the LSM tree" : 0, "bloom filter false positives" : 0, "bloom filter hits" : 0, "bloom filter misses" : 0, "bloom filter pages evicted from cache" : 0, "bloom filter pages read into cache" : 0, "total size of bloom filters" : 0, "sleep for LSM checkpoint throttle" : 0, "chunks in the LSM tree" : 0, "highest merge generation in the LSM tree" : 0, "queries that could have benefited from a Bloom filter that did not exist" : 0, "sleep for LSM merge throttle" : 0 }, "block-manager" : { "file allocation unit size" : 4096, "blocks allocated" : 190152428, "checkpoint size" : 11145277440, "allocations requiring file extension" : 225612, "blocks freed" : 189847759, "file magic number" : 120897, "file major version number" : 1, "minor version number" : 0, "file bytes available for reuse" : 93298688, "file size in bytes" : 11432701952 }, "btree" : { "btree checkpoint generation" : 44481, "column-store variable-size deleted values" : 0, "column-store fixed-size leaf pages" : 0, "column-store internal pages" : 0, "column-store variable-size leaf pages" : 0, "pages rewritten by compaction" : 0, "number of key/value pairs" : 0, "fixed-record size" : 0, "maximum tree depth" : 5, "maximum internal page key size" : 368, "maximum internal page size" : 4096, "maximum leaf page key size" : 3276, "maximum leaf page size" : 32768, "maximum leaf page value size" : 67108864, "overflow pages" : 0, "row-store internal pages" : 0, "row-store leaf pages" : 0 }, "cache" : { "bytes read into cache" : NumberLong("30740995584012"), "bytes written from cache" : NumberLong("29998939159917"), "checkpoint blocked page eviction" : 394628, "unmodified pages evicted" : 164578679, "page split during eviction deepened the tree" : 1173, "modified pages evicted" : 61796390, "data source pages selected for eviction unable to be evicted" : 10970507, "hazard pointer blocked page eviction" : 7932631, "internal pages evicted" : 3553083, "pages split during eviction" : 3825008, "in-memory page splits" : 15025, "overflow values cached in memory" : 0, "pages read into cache" : 175450372, "overflow pages read into cache" : 0, "pages written from cache" : 190063507 }, "compression" : { "raw compression call failed, no additional data available" : 0, "raw compression call failed, additional data available" : 0, "raw compression call succeeded" : 0, "compressed pages read" : 173302623, "compressed pages written" : 170315036, "page written failed to compress" : 22, "page written was too small to compress" : 19748044 }, "cursor" : { "create calls" : 4043133, "insert calls" : 230047485, "bulk-loaded cursor-insert calls" : 0, "cursor-insert key and value bytes inserted" : NumberLong("29150212316581"), "next calls" : 730226547, "prev calls" : 37, "remove calls" : 4040833, "cursor-remove key bytes removed" : 36367497, "reset calls" : 583047853, "search calls" : 328774626, "search near calls" : 5144225, "update calls" : 0, "cursor-update value bytes updated" : 0 }, "reconciliation" : { "dictionary matches" : 0, "internal page multi-block writes" : 79957, "leaf page multi-block writes" : 3847381, "maximum blocks required for a page" : 870, "internal-page overflow keys" : 0, "leaf-page overflow keys" : 0, "overflow values written" : 0, "pages deleted" : 9135126, "page checksum matches" : 2604439, "page reconciliation calls" : 62629072, "page reconciliation calls for eviction" : 60930354, "leaf page key bytes discarded using prefix compression" : 0, "internal page key bytes discarded using suffix compression" : 177193166 }, "session" : { "object compaction" : 0, "open cursor count" : 4043133 }, "transaction" : { "update conflicts" : 0 } }, "nindexes" : 0, "totalIndexSize" : 0, "indexSizes" : { }, "ok" : 1, "$gleStats" : { "lastOpTime" : Timestamp(0, 0), "electionId" : ObjectId("5614f9ebaffca08a80d27834") } }