[Mageia-discuss] Suggestions for the ISO

Sun Nov 7 07:56:31 CET 2010

On dimanche 07 novembre 2010 at 00:54, andre999 wrote :
+> Olivier Thauvin a écrit :
+> > * andre999 (andr55 at laposte.net) wrote:
+> > So to update from -1 to -3 I'll download around 300KB but to upgrade
+> > from -2 to -3 I'll download the full rpm so maybe around 20MB (in the
+> > case the rpm is 20MB) ?
+> 
+> No no no no no !
+> If from -1 to -3 is 300K, then upgrading from -2 to -3 would still be
+> 300K.
+> 
+> Of course, this raises the point that the names of the original files in 
+> -1 will have to be retained after updates, as well as the names of files 
+> replacing them, in order to make the additional updates.  (And remove 
+> any interim updates subsequently replaced.)
+
+But what append if a file modified in an update is rolled back in a 
+subsequent update?
+
+Let's say revision -1 of a package contains files A B and C, an update to 
+revision -2 changes B to B', then it is realised that the problem was 
+actually in file C and not B, so in revision -3 B' is replaced by original B 
+and C is replaced by C'.
+So the delta between -1 and -3 only contains C', so if someone updates with 
+the delta from revision -2 he will still have B' as the delta won't contain 
+B which was in the original -1 revision.
+
+> This could be facilitated by making the names of the replacement files 
+> in delta updates the original file name + a suffix corresponding to the 
+> delta update.
+
+I don't understand, the files need to have the correct name to work once 
+installed, or are you proposing that on an update to keep all previous files 
+by suffixing them?
+
+-- 
+Renaud Michel
+