ubuntu-phone team mailing list archive

[David Marceau <uticdmarceau2007@xxxxxxxx>]

On 03/16/2014 09:42 AM, David Marceau wrote:
> On 03/16/2014 08:09 AM, Oliver Grawert wrote:
>> hi, Am Sonntag, den 16.03.2014, 07:58 -0400 schrieb David Marceau:
>>> This weekend I tried to install ubuntu-sdk directly on my Nexus 4
>>> in order to directly build go-qml apps.  I ran out of space on
>>> the device.
>>
>> this is by design ... we offer 500MB for installing additional
>> packages currently for people needing to work on the system
>> plumbing itself. Resizing the loop device would be really complex
>> (not to mention that using apt isn't really encouraged and that
>> things like dist-upgrade are not supported at all which means you
>> would have to re-flash and re-install all the time when wanting to
>> upgrade anything)
>>
>> I was wondering if it would make sense to offer a tool to resize
>> the loop image for developers (and cover the complexity for them),
>> but that won't change a thing regarding the fact that dpkg will
>> break on apt-get upgrade/dist-upgrade since it wont be able to use
>> the hard links it requires across partition boundaries.
>>
>> If you want to build apps for the target arch, setting up a cross
>> build environment is the way to go here ...
> 
> Why should I cross build when I can build directly on the target?
> I installed everything and actually built on the target.
> I was just missing a bit more space.
> 
> I am of the opinion it is best to build and debug on the platform
> rather than cross-compile especially when this platform is fast enough
> to handle it and has the adequate resources.  It's just that the
> resources are not currently distributed with hosted development in mind.
> 
> I would prefer to have a tool to resize the loop image within the
> phablet flash switches  --loop-size=4GB, but defaults to 2GB for
> production.
> For example:
> ubuntu-device-flash --revision=237 --channel=devel-proposed
> --bootstrap --loop-size=4GB
> Would that be possible?

I'm trying to manually resize /dev/loop0 myself as mentioned in:
http://askubuntu.com/questions/260620/resize-dev-loop0-and-increase-space
> sudo losetup /dev/loop0 
losetup /dev/loop0
/dev/loop0: [b317]:24433 (/tmpmnt/system.img)
> to see what file the loopback device is attached to
> sudo dd if=/dev/zero bs=1MiB of=/path/to/file conv=notrunc oflag=append count=2GiB 
>!!!count is what I want to ADD to the file. 2GB(already exists so we
need another 2GB).
QUESTION:  What's the best block size for ubuntu phone bs=1MiB, but that
seems a bit high.

I tried:
/sbin/dumpe2fs / | grep 'Block size'

But I got an error.
dumpe2fs 1.42.9 (4-Feb-2014)
/sbin/dumpe2fs: Attempt to read block from filesystem resulted in short
read while trying to open /

> sudo losetup -c /dev/loop0 
> sudo resize2fs /dev/loop0