Hi, I don't think hashes are a good way to do that. The Repositories are quite large I'm not sure what value is the right one from this [1] statistics page. Either way, after every update the mirror would effectively block for the time the hash is computed, since everything has to be read. Anyway, the time a mirror isn't in a sane state should be quite short if ever. I don't know how updates are handled, so I can't say what happens and what doesn't. Nontheless the servers normally have enough bandwidth to sync in a few seconds (I guess)... The most important part of my answer is, that this mailing list isn't the right place for discussing this topic. There is a mirror-list mailing list out there [2] cheers, Simon [1]: https://www.archlinux.de/?page=RepositoryStatistics [2]: https://mailman.archlinux.org/mailman/listinfo/arch-mirrors 2014/1/15 Mark Lee <mark@xxxxxxxxxxxx> > On Wed, 2014-01-15 at 22:54 +0100, Guus Snijders wrote: > > Op 15 jan. 2014 19:17 schreef "Mark Lee" <mark@xxxxxxxxxxxx> het > volgende: > > > > > [...] > > > > > There is a file called lastsync. It is read < > > > > > http://mirror.csclub.uwaterloo.ca/archlinux/lastsync> > > > > > > > > Yes, I see that there's a check script but what is it? I'd like to > know > > > > how that link calculates percent synchronization for a particular > > > > mirror. I ask this because there have been instances when a mirror is > > > > claimed to be 100% synchronized but isn't. > > > > > > > > > > > > Oh I see it now, so "completion" is only a percentage of the number of > > > times the checkscript is successfully run on a particular mirror > without > > > disconnecting. > > > > > > Is the lastsync value a hash value or temporal? > > > > As Thomas' message explains, it's a timestamp. A very nice solution if > you > > ask me. > > > > mvg, Guus > > Salutations, > > I see. My concern is regarding mirrors that aren't fully up to date > (I've encountered the situation before and it wasn't a packaging error > at the time) and reporting this fact to the user. Instead of using a > time stamp, why not use a cryptohash of a list of the files installed as > the lastsync value. Pacman -Syy could then check the hash value (it > grabs from the tier 1 mirror) and check it against the current mirrors > it's using. > > Regards, > Mark > -- > Mark Lee <mark@xxxxxxxxxxxx> > >
