[Starlingx-discuss] when and how is squashfs.img used?

As a part of pxe-network-installer-1.0-27.tis.x86_64.rpm, my understanding is that Squashfs.img will be mounted by nodes (such as 2nd controller, compute nodes and storage nodes) during the process of PXE boot installation. However, these questions are in my mind: 1. Will be squashfs.img still being used *AFTER installation*? 2. Where is squashfs.img mounted? I checked /etc/fstab, and there is no such an item. Regards, Yong