[PATCH] olpc.fth - grow the root filesystem partition on boot

[Peter Robinson]

On Wed, Mar 14, 2012 at 11:29 PM, James Cameron <quozl at laptop.org> wrote:
> On Wed, Mar 14, 2012 at 07:02:51PM -0400, John Watlington wrote:
>>
>> On Mar 14, 2012, at 6:04 PM, James Cameron wrote:
>>
>> > On Wed, Mar 14, 2012 at 08:37:23AM -0600, Daniel Drake wrote:
>> >> On Wed, Mar 14, 2012 at 7:06 AM, Richard Smith <richard at laptop.org> wrote:
>> >>> On Wed, Mar 14, 2012 at 1:35 AM, James Cameron <quozl at laptop.org> wrote:
>> >>>> Grows the second partition so that it takes up all remaining space on
>> >>>> the eMMC or microSD card. ?Fix for #11690. ?Part of #10040.
>> >>>>
>> >>>> Costs 120ms. ?(Use of a flag file costs 130ms).
>> >>>>
>> >>>
>> >>> I don't think its necessary to do this check every boot. I propose you
>> >>> move it to after fs-update has installed an image.
>> >>
>> >> Also, olpc.fth isn't executed in the secure boot path, so it does need
>> >> to be put somewhere else. I like Richard's suggestion.
>> >
>> > This would break fs-verify, and is therefore unacceptable.
>>
>> Is this really a concern ?   It doesn't break fs-verify if one is using the correct
>> image for the storage device in question.   Or are we tweaking the filesystem
>> to get the extra few MB with some cards ?
>
> With #11690 and #10040 fixed, we would only need to create one image for
> the smallest storage device shipped.  Every image would then be the
> correct image.
>
> Yes, this method can be used to "free up" the unused space between the
> size of the smallest image and the size of the smallest storage device
> shipped, but that is a side-effect.
>
> fs-verify is used after fs-update in factory to ensure that the
> fs-update was successful.

Stupid question but can't you just do fs-update -> fs-verify to verify
the image installed is imaged over correctly -> fs-expand to expand it
to a full size once we know the image is good?

Peter