Re: RFE : adding size information to repomd.xml

On Sat, 13 Feb 2010, Satish Eerpini wrote:

> Hello everyone,
>
> we were looking at a particular scenario when yum-presto plugin is
> installed. If the number of package updates (or the size of the
> package updates) during a particular update is low, it so happens that
> the prestodelta metadata is much higher in size than the actual
> package updates.
> I tried to introduce a checkpoint in the presto code, so that the size
> of the metadata and the size of the actual package updates to be
> downloaded are compared, and in case the prestodelta metadata is
> larger in size, presto is skipped and normal package update happens.
> Being a novice at this myself, I referred the scenario to the presto
> people and I was told that currently the size of the prestodelta
> metadata cannot be known before downloading it. And to be able to know
> the delta download size, the repomd.xml needs to store the size
> information also.
> Please let me know what are the possibilities.

size info is already in repomd.xml

here's a prestodelta stanza:

  <data type="prestodelta">
     <checksum 
type="sha256">a0563080b67b12ca27c6e2b7b8247c1500b409f067fd4801fe895bceed6830f8</checksum>
     <timestamp>1266073226</timestamp>
     <size>105728</size>
     <open-size>488612</open-size>
     <open-checksum 
type="sha256">587646c420b6d46f80db6cd6472b5f22802874709da20d45f8552bf022b4e169</open-checksum>
     <location href="repodata/prestodelta.xml.gz"/>

-sv


size == compressed size
open-size == decompressed size

-sv