Comment 9 for bug 1619362
Revision history for this message
| Steve Langasek (vorlon) wrote Re: [Bug 1619362] Re: images should not be largely bigger than the actual content | #9 |
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(Get the code!)
On Fri, Sep 02, 2016 at 04:04:30PM -0000, Oliver Grawert wrote:
> excuse my ignorance, but what is the benefit of using a sparse file at
> all over a properly sized img ? i really dont see any advantage in
> wasting all these zeros :)
I'm not opposed to us switching to online-resizing of the filesystem. But
here are a couple reasons why, in general, we should be doing sparseness and
not just relying on on-line resizing:
- Only the rootfs is auto-expanded. All the other filesystems get as much
space as is initially allocated in the gadget snap, so there are going to
be a lot of zeroes there.
- Some partition schemes may require placing additional partitions at the
end of the disk, /after/ the writable partition. In this case, we won't
be able to online resize anything, but will instead have to statically
allocate it.