[Buildroot] Best way to update deployed systems created with BuildRoot?
Yann E. MORIN
yann.morin.1998 at free.fr
Sun Jul 26 16:45:53 UTC 2015
Fred, All,
On 2015-07-26 09:30 -0700, Fred Basset spake thusly:
> Does anyone have any experience on the best way to update the root
> filesystem of systems in the field once they're deployed?
Basically, you BR2_PACKAGE_XSERVER_XORG_SERVER_MODULARhave two options:
1) duplication
- you split your storage in two halves, each with a version of the
firmware: N and N-1.
- when you update to N+1, you overwrite the N-1 with N+1 and reboot
- your bootloader has a way to find the latest version, check its
integrity, and boot it.
2) rescue/update
- you split your storage in two, one large partition with the
nominal system, a smal one with a minimalist system that only
knows how to update the nominal
- your bootloader is smart enough to detect which it should boot.
Regards,
Yann E. MORIN.
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