ubuntu-phone team mailing list archive

[Alex Tu <alex.tu@xxxxxxxxxxxxx>]

Hi,

Refer to existed projects, /system partition is composed by 3 tarballs from
OTA server : system-image.ubuntu.com

The way would be trying to understand what ubuntu-device-flash and
system-image-upgrader are doing in recovery.
AFAIK, u-d-f generate /cache/recovery/ubuntu_commands then s-i-u follows
that command file to do process.
One of process would be mount /system partition then fill all stuff to
there.

So, you might could follow that rule to prepare those tarballs,
I think what you need to prepare specifically for LG L90 Dual is device
tarball which include kernel and android stuff.

And reuse ubuntu rootfs tarball and custom tarball is enough. :)

Oh, I'm also curious about that did you already re-partition your cache
partition to a bigger one?
Because these 3 tarball might occupied about 500mb space, and existed
projects reserve 700mb for cache partition.

iirc, all android device are prepare smaller cache partition.

And of cause, you also need to confirm if system partition is big enough.

Regards,
Alex Tu.

On Wed, Jun 29, 2016 at 6:30 PM รัชนันท์ ศรีรัตนเมธ <peathot@xxxxxxxxxxx>
wrote:

> Hello,
>
> I've ported Ubuntu Touch to LG L90 Dual since last year. From the
> beginning, I've left the rootfs in /data/ubuntu.img as I don't know
> about systempart kernel command line.
>
> Now, my device has a few users and has the image on UBPort's
> system-image server. I want to migrate the rootfs from /data/ubuntu.img
> to /system partition without losing any data. Simply putting
> "systempart=/dev/disk/....." in new update will not works as Ubuntu
> rootfs isn't applied to the partition by the time new boot.img is
> flashed (It'll be flashed by old recovery image).
>
> My current plan is to modify Ubuntu's initrd to see if rootfs is flashed
> to /system partition, and then select the right method. For actual
> migrating, I'll modify system-image-upgrader to do actual migration next
> time the update is installed. Anybody have better plan?
>
> Ratchanan Srirattanamet
>
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