On Mon, 2018-11-19 at 21:14 +0000, Tom Hughes wrote:
On 19/11/2018 20:30, Jonathan Dieter wrote:
> On the client:
> The zchunk advantage over regular rpm is decreased network usage, while
> its disadvantage is increased disk usage (since the local chunks will
> be uncompressed).
>
> The zchunk advantage over deltarpms is much less CPU usage, while its
> disadvantages are slightly larger network usage and increased disk
> usage.
>
> Note that for most users the increased disk usage is temporary, since
> rpms are deleted after install.
If they're deleted after install then surely next time there is an
update there won't be any local chunks and everything will have to
be downloaded?
That's what has been confusing me about this whole thing - as I
understand it the idea is to only download new chunks and to reuse
chunks that are unchanged from earlier revisions, but it seems
that doing that would require keeping a local copy of every
installed rpm which would be a big change that nobody seems to
have mentioned.
The idea is to use the locally installed files as the local chunks, the
same way that deltarpm does.
Jonathan