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How can I reclaim disk space from MongoDB?
In a replica set, unused disk space can be released by running an initial sync. This involves stopping the mongod instance, emptying the data directory, and then restarting to allow it to reconstruct the data through replication. Published at DZone with permission of Chamal Nanayakkara .
What is the percentage of disk space used for MongoDB?
Disk space % used on Data Partition occurs when the percentage of disk space used on any partition that contains the MongoDB collection data meets or exceeds a certain threshold. By default, the threshold is 90 percent of the cluster’s configured storage size.
What does the datasize parameter on MongoDB mean?
The dataSize parameter shows the size of the data in the database, while storageSize shows the size of data plus unused/freed space. The fileSize parameter, which is essentially the space your database is taking up on disk, includes the size of data, indexes, and unused/freed space.
Is there a way to run repairdatabase in Mongo?
RepairDatabase needs free space equivalent to the data in your database and an additional 2GB more. It can be run either from the system shell or from within the mongo shell. Depending on the amount of data you have, it may be necessary to assign a sperate volume for this using the –repairpath option.
What does the filesize parameter mean in MongoDB?
The fileSize parameter, which is essentially the space your database is taking up on disk, includes the size of data, indexes, and unused/freed space. MongoDB is commonly used to store large quantities of data, often in read-heavy situations where the amount of data manipulation operations are relatively much less.
What happens if I delete 10 GB of data from MongoDB?
Here’s a simple example: Let’s say you have 10 GB of data in a MongoDB database, and you delete 3 GB of that data. However, even though that data is deleted and your database is holding only 7 GB worth of data, that unused 3 GB will not be released to the OS.