Working with USB attached storage

Log files that record events related to sensors can grow really fast, and therefore, storing log files in the the microSD storage space might become a problem. We can work with microSD cards up to 32 GB. Thus, one option is to create the Yocto Linux image on a bigger microSD card and continue working with a single storage. This would require us to expand the partition from the default image. The other option is to take advantage of the cloud and just keep a constrained log in our local storage. However, we will work with this option later. Now, we want to explore the additional options we have to use local storage.

As we learned in Chapter 1, Understanding and Setting up the Base IoT Hardware, The Intel Galileo Gen 2 board provides a USB 2.0 host connector, labeled USB HOST. We can use this connector to plug a USB thumb drive for additional storage and save the log file in this new storage.

Before you plug any USB thumb drive, run the following command in...