I was handed an existing build that creates an SD card image for STM32MP1 and, while the partition allocated for the root filesystem is a gargantuan 9G, it's clear the filesystem created inside it is much smaller -- around 512M -- and I'm already at 98% full. I'm using ST's SD card image creation script, and I have looked for the variable where I can specify a larger root filesystem. I've seen a couple other posts here that provide suggested solutions, but those don't appear to work.
Is there a single controlling variable that identifies the desired size of the actual root filesystem (independent of the size of the containing partition)? I'm assuming that value would be fed to a "mke2fs" command somewhere.
P.S. I'm using the walnascar release of the meta-st-stm32mp layer.
