DevelopedInside/android_device_wileyfox_marmite

Unable to encrypt phone

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dbeniamine commented

Hi there,

Thanks again for the ROM, I am using the 17.1 now ("official" build, fresh install) and it works well, but I had an issue : I was not able to encrypt my phone: the phone reboots and does not compelte encryption.

I did the encryption process with logcat and could identify this error:

E Cryptfs : Bad magic for real block device /dev/block/bootdevice/by-name/userdata
E Cryptfs : Orig filesystem overlaps crypto footer region.  Cannot encrypt in place.

After a quick search if found a similar issue on another device.

I understood that the issue was that the device /dev/block/bootdevice/by-name/userdata was using all the space available while encrypt requires 16 kB free (4 blocks), so I did the following :

  1. Reboot to recovery
  2. Launch adb shell
  3. Identify the device : ls -l /dev/block/bootdevice/by-name/userdata which showed that it was a link to /dev/block/mmcblk0p48
  4. Get the size in block of the device tune2fs -l /dev/block/mmcblk0p48, get the value of block count, in my case 6372217
  5. Umount the device umount /sdcard
  6. e2fsck -y -f /dev/block/mmcblk0p48
  7. resize2fs /dev/block/mmcblk0p48 6372213
  8. reboot

After that I was able to encrypt my phone

I discourage anyone who does not understand the above commands to use them at a bad command could result on data loss.

I guess this could be fixed in the ROM by changing the default size of the sdcard filesystem to keep these 16kB

Best regards,