2009/12/11 Ng Oon-Ee <ngoonee@xxxxxxxxx> > On Sat, 2009-12-12 at 02:13 +0100, Heiko Baums wrote: > > Am Sat, 12 Dec 2009 08:58:17 +0800 > > schrieb Ng Oon-Ee <ngoonee@xxxxxxxxx>: > > > > > Because sometimes all the mirrors listed in mirrorlist will not have > > > the file, if its just been uploaded. Also not everyone stays > > > up-to-the-minute with updates, judging by the "updated after a month" > > > posts we see once in a while. > > > > > > I'm concerned about the last bit, if a package was just uploaded and > > > only exists on one mirror, everyone who updates and has that package > > > in the period between its uploading and its appearance on their local > > > mirrors will 'fall-back' on varying mirrors (lengthening the update > > > process) and all end up on the poor main server (or Tier 1/2 mirrors). > > > Bad for both the mirror bandwidth as well as most probably much slower > > > for the user, who could probably just wait a day or so for the update > > > to come to his (faster, presumably) local mirror. > > > > > > Wouldn't it be possible to first upload the packages and update the db > > files when the packages on the mirrors (at least on several mirrors) > > are updated? > > > > If I have such a "problem" that a package is on no mirrors, which > > doesn't happen often, I usually abort the system update and wait one > > day. I think that's the normal and easiest way of solving this issue. > > > > Greetings, > > Heiko > > The few mirrors which sync first would have quite much higher bandwidth > usage =). > > The concern then is that in the period of time between uploading of > packages and updating of db, the db would point to a package (foo-1.3) > while the mirror would only have the new version (foo-1.4), since I > don't think many mirrors keep multiple copies of the same package > (schlunix I know off, any others?). So that would break updating as > well, just in a different direction, and this would not be recoverable > from. > > Maybe a better idea would be to make pacman keep track of the last time it got an updated package list, and if it's beyond a certain point, it starts checking other mirrors (maybe optional "No updates have been found in 5 days, would you like to scan other mirrors for updates?").
