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I'm guessing there are embedded Linux deployments that went this direction even earlier. Read-only rootfs is generally a good idea if you can swing it. You ga

I'm guessing there are embedded Linux deployments that went this direction even earlier. Read-only rootfs is generally a good idea if you can swing it. You gain the ability to sign the rootfs which is good for security.

azernik 7y ago
Having worked on embedded systems with (nearly) read-only root filesystems: An even bigger motivator is that flash memory lifetime is more determined by number of writes per block rather than time or reads per block. So to keep your storage both cheap and reliable, it's best to flash it with a single full (compressed) image every time you run a firmware upgrade, and otherwise mount it read-only.
pknopf 7y ago
I work on embedded Linux systems, which inspired me to write Darch with the same technology I was using for my embedded systems. https://godarch.com/ https://godarch.com/ https://pknopf.com/post/2018-11-09-give-ubuntu-darch-a-quick-ride-in-a-virtual-machine/ https://pknopf.com/post/2018-11-09-give-ubuntu-darch-a-quick...
fucking_tragedy 7y ago
Both Linux live CDs and OpenWRT have done this for over a decade with union mounts.