Hi!
Sorry if that's been answered before, but I couldn't find a clear answer.
We currently have our dev systems, booting directly on the SDCard (ext3) and
carefully calling shutdown before closing the device, and never had any problem.
Now we want to prepare devices for clients and they need to power off very
often, while the device is running without calling shutdown. So we moved the OS
on the onboard flash, and mount the SDCard on boot with only our application
and data on it. We used a standard FAT for the SD simply because it was easier
to work with. Everything works fine, but after 3-4 "hard shutdown (cut power)",
the sdcard get corrupted and at some point the filesystem change from RW to RO
automatically when it detect an error.
I guess we could put everything on the onboard flash, but we also want to be
able to send updates to client (shipping another sdcard).
So I've searched a bit, and found out YAFFS2 seems to be a filesystem designed
for flash and sdcard preventing this kind of corruption. I am right or I'm
totally lost? Let's say I want to use it, I just can't find any utility to
format my SDCard with this filesystem type. I can't find any mkfs.yaffs2, nor
anything in apt-get. How do you do it?
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