Failsafe

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Revision as of 09:54, 6 August 2015 by JulienB (Talk | contribs) (Backup eMMC rootfs)

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Intro

Failsafe is the short name for the RAM bootable rescue image for APF boards (APF6 only for the moment). It is a Linux kernel + minimal initrd image all packed together in a standard apf6-linux.bin.

Installation

Generate it

$ make apf6failsafe_defconfig
$ make
$ cp buildroot/output/images/apf6-linux.bin /tftpboot/

Launch it

BIOS> run ramboot

Cool stuff that can be done with it

apf-config

# apf-config
  • check eMMC filesystem

Backup eMMC rootfs

  • you need a network connection with a server that can receive the backup (for example with NFS, here mounted on /mnt/nfs/):
# dd if=/dev/mmcblk2 bs=128k conv=noerror,sync | pv | gzip -c -9 > /mnt/nfs/root.bak.gz
  • wait some minutes until backup is done ;-)

Links