[Fedora-livecd-list] [PATCH] cleanupDeleted and container_size - saves 5.5% output size on f7livecd-i686

[Douglas McClendon]

Phillip Lougher wrote:
> Douglas McClendon wrote:
> 
>> 20% speedup of reading data into /dev/null isn't all that useful.
> 
> I could write an irritable comment here, but I won't rise to the
> bait :-)

Sorry, I did not realize from your post that you were the squashfs 
author.  I assumed you were a more run of the mill fedora 
livecd-tools/revisor user/developer.

In the pure squashfs context, your test does make sense, as simple proof 
that basic sparse file support is there.

Though given that false assumption above, and all the other context of 
your post, and my subsequent replies, you can see how I jumped to the 
false conclusion that somehow this was shaping up to be an alternate 
implementation of my turboLiveInst improvements.

And clearly I harbor some political issues...

It is cool how I can see that a/the squashfs developer could easily 
google/search for "squashfs sparse" in an attempt to see how desired the 
functionality is, and no doubt end up finding that specific post.

Again, my apologies for the defensive response, and much more than that, 
my gratitude for the support.  When you are trying to fit lots of cool 
stuff into 700MB, getting 3 more for free, really is nice.  And another 
9 (or cough more) with various trade-offs is also a very nice option.

And then there are devicemapper-livecd freaks like myself, who will 
appreciate the ability to for free, use a 1T sparse file, so that 
devicemapper snapshot overlay storage space permitting, I can online 
resize2fs my root filesystem as high as I want, without having to do a 
hacky thing like create a linear devicemapper addition of the original 
small sparse file, and a fake devicemapper zero device (together forming 
the base of a dm-snapshot device).

Finally, (for any spectators reading this far), what you mentioned about 
sorting by access time, is one of a few key factors I had in mind for 
drastically reducing livecd boot time.  It's a bit trickier for fedora 
than for kubuntu, because of the ext3 image file versus native squashfs, 
but it should be doable.

Regards,

-dmc