db.fsyncUnlock()¶

On this page

Definition
Wired Tiger Compatibility

Definition¶

db.fsyncUnlock()¶

Unlocks a mongod instance to allow writes and reverses the operation of a db.fsyncLock() operation. Typically you will use db.fsyncUnlock() following a database backup operation.

db.fsyncUnlock() is an administrative operation.

Wired Tiger Compatibility¶

Changed in version 3.2: Starting in MongoDB 3.2, db.fsyncLock() can ensure that the data files do not change for MongoDB instances using either the MMAPv1 or the WiredTiger storage engine, thus providing consistency for the purposes of creating backups.

In previous MongoDB version, db.fsyncLock() cannot guarantee a consistent set of files for low-level backups (e.g. via file copy cp, scp, tar) for WiredTiger.

← db.fsyncLock() db.getCollection() →

Was this page helpful?

Yes No

Thank you for your feedback!

We're sorry! You can Report a Problem to help us improve this page.