Logic Technology: Datalight provides support for Android certification

Developers who build devices that run Android must pass the Android Compatibility Test Suite (CTS) in order to claim full compatibility. As application complexity and storage capacity has increased, Google has recently revised the CTS to include new requirements, such as a larger path structure and support for the fallocate() file system command. Datalight implemented a design that enables Reliance Nitro to support the command for Linux- and Android-based devices.

The fallocate() command is intended to ensure that sufficient space will exist on the storage media for critical files to be created and modified.  If a developer is using the default Android file system, ext4, it makes sense to require this because on that file system reliability is ensured through a journal. If the journal runs out of room on the disk, bad things will happen. The transactional reliability method for Reliance Nitro does not suffer from the same constraints and has historically not supported fallocate().

Logic Technology’s engineering services team reviewed how the Android CTS validates fallocate() and implemented a design that would enable Reliance Nitro to support the command for Linux- and Android-based devices. Using Datalight Reliance Nitro allows customer’s products to not only meet the Android CTS but to also offer better boot time, performance and data integrity.

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