[Fedora-livecd-list] RFC- improving livecd installer efficiency

[Douglas McClendon]

Douglas McClendon wrote:
> Mark McLoughlin wrote:
>> Hey,
>>     Okay, I follow you now. Doing:
>>
>>   - Create snapshot of os.img
>>   - Resize it down to the smallest possible size
>>   - Copy it to disk
>>   - Resize it back up to the size of the disk
>>
>>     has the dual advantages of being able to install to the small 
>> possible
>> disk size and not copying unallocated blocks.
>>
>>     Sounds like a reasonable plan ... go ahead and give it a shot.
>>
>>     The reservation I'd have is if you're resizing down from 4G to 3G, 
>> the
>> 1G of data blocks which have to be moved could potentially be at the end
>> of the image. In that case, you'd need a 1G COW area for the snapshot.
> 
> 
> The part of my theory that is supposed to cover that, is an extra 
> minimize/truncate/sparsify_expand/maximize cycle on the image just 
> before it gets burned in the squashfs.  Fingers crossed...

Actually even before testing this, I'm 90% sure it won't work...  But I'm 99% 
sure I figured out something that will.  You'll love it, trust me ;)

-dmc