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Configuration File Settings and Command-Line Options Mapping

The following table maps the configuration file settings and the related mongod and mongos command-line options.

Configuration File Setting
mongod and mongos Command-Line Options
Starting in version 4.4:
MongoDB removes the --noIndexBuildRetry command-line option and the corresponding storage.indexBuildRetry option.
Starting in version 4.2:

MongoDB removes the deprecated MMAPv1 storage engine and the MMAPv1-specific configuration options:

Removed Configuration File Setting
Removed Command-line Option
storage.mmapv1.journal.commitIntervalMs
storage.mmapv1.journal.debugFlags
mongod --journalOptions
storage.mmapv1.nsSize
mongod --nssize
storage.mmapv1.preallocDataFiles
mongod --noprealloc
storage.mmapv1.quota.enforced
mongod --quota
storage.mmapv1.quota.maxFilesPerDB
mongod --quotaFiles
storage.mmapv1.smallFiles
mongod --smallfiles
storage.repairPath
mongod --repairpath
replication.secondaryIndexPrefetch
mongod --replIndexPrefetch

For earlier versions of MongoDB, refer to the corresponding version of the manual. For example:

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