我在Windows Server 2012 R2上运行了一个MongoDB 2.4.8实例。 MongoDB作为Windows服务安装。我启用了日记功能。
MongoDB documentation建议只应通过Windows服务控制管理器关闭MongoDB服务：
net stop MongoDB
当我最近这样做时，记录了以下内容，最后我在磁盘上找到了一个非零字节的mongod.lock文件。 （我使用--repair选项来解决这个问题，但事实证明这可能不是必要的，因为我启用了日记功能。）
Thu Nov 21 11:08:12.011 [serviceShutdown] got SERVICE_CONTROL_STOP request from Windows Service Control Manager, will terminate after current cmd ends
Thu Nov 21 11:08:12.043 [serviceShutdown] now exiting
Thu Nov 21 11:08:12.043 dbexit:
Thu Nov 21 11:08:12.043 [serviceShutdown] shutdown: going to close listening sockets...
Thu Nov 21 11:08:12.043 [serviceShutdown] closing listening socket: 1492
Thu Nov 21 11:08:12.043 [serviceShutdown] closing listening socket: 1500
Thu Nov 21 11:08:12.043 [serviceShutdown] shutdown: going to flush diaglog...
Thu Nov 21 11:08:12.043 [serviceShutdown] shutdown: going to close sockets...
Thu Nov 21 11:08:12.043 [serviceShutdown] shutdown: waiting for fs preallocator...
Thu Nov 21 11:08:12.043 [serviceShutdown] shutdown: lock for final commit...
Thu Nov 21 11:08:12.043 [serviceShutdown] shutdown: final commit...
Thu Nov 21 11:08:12.043 [conn1333] end connection 127.0.0.1:51612 (18 connections now open)
Thu Nov 21 11:08:12.043 [conn1331] end connection 127.0.0.1:51610 (18 connections now open)
...snip...
Thu Nov 21 11:08:12.043 [conn1322] end connection 10.1.2.212:53303 (17 connections now open)
Thu Nov 21 11:08:12.043 [conn1337] end connection 127.0.0.1:51620 (18 connections now open)
Thu Nov 21 11:08:12.839 [serviceShutdown] shutdown: closing all files...
Thu Nov 21 11:08:14.683 [serviceShutdown] Progress: 5/163 3% (File Closing Progress)
Thu Nov 21 11:08:16.012 [serviceShutdown] Progress: 6/163 3% (File Closing Progress)
...snip...
Thu Nov 21 11:08:52.030 [serviceShutdown] Progress: 143/163 87% (File Closing Progress)
Thu Nov 21 11:08:54.092 [serviceShutdown] Progress: 153/163 93% (File Closing Progress)
Thu Nov 21 11:08:55.405 [serviceShutdown] closeAllFiles() finished
Thu Nov 21 11:08:55.405 [serviceShutdown] journalCleanup...
Thu Nov 21 11:08:55.405 [serviceShutdown] removeJournalFiles
Thu Nov 21 11:09:05.578 [DataFileSync] ERROR: Client::shutdown not called: DataFileSync
最后一行是我的主要关注点。
我也对MongoDB如何能够比Windows通常允许服务关闭需要更长时间才能关闭感兴趣？在什么时候关闭机器而不检查日志文件是安全的？