[Rpm-metadata] CVS access problem
Hans-Peter Jansen
hpj at urpla.net
Wed Jul 19 20:26:36 UTC 2006
Hi Paul,
Am Mittwoch, 19. Juli 2006 14:35 schrieb Paul Nasrat:
> On Wed, 2006-06-28 at 19:03 +0200, Hans-Peter Jansen wrote:
> > Am Mittwoch, 28. Juni 2006 17:37 schrieb Jeff Johnson:
> > > Hint:
> >
> > Seth, for your convenience, it's also attached.. Without this, e.g.
> > VMwareWorkstation rpms will get the None cache file chksum tag,
> > which defeats its purpose. On the downside, it requires to rebuild
> > the whole repocache.
>
> Hans is this the only outstanding patch of yours?
Yep, no other serious issues from my side (other than it could do much
faster, but unfortunately no spare time to tackle this [again]).
[I wrote this three hours ago]
But since you asked so nice, I just took the opportunity to implement
timestamp checking again. From createrepo.8:
-C --checkts Don't generate repo metadata, if their timestamps are newer
than its rpms. This option decreases the processing time drastically
again, if you happen to run it on an unmodified repo, but it is
(currently) mutual exclusive with the --split option.
I did this already a year ago, but took the wrong timestamp, which made
it rather unreliable. In the meantime, I've learned from another
problem, that there is no simple way to manipulate file ctimes other
than setting a different system time.
I think, this implementation is quite robust, if the repo is located on
a decent file system (other the vfat and the like). It's running since
about an hour here. For my usage pattern, it's a great achievement,
since I locally mirror a bunch of repos with rsync a few times per day,
and trigger createrepo on each, which is quite noticeable when using
the cachedir option only.
Here are some numbers (admittedly a pathologic case):
# du -sh inst-source
13G inst-source
# find inst-source -name \*.rpm | wc -l
7619
First run, no cache, no repo:
# time createrepo -q inst-source
real 4m1.900s
user 3m31.414s
sys 0m20.946s
Second run:
# time createrepo -qc repocache inst-source
real 1m42.746s
user 1m30.029s
sys 0m2.385s
Now with timestamp check:
# time createrepo -qCc repocache inst-source
real 0m0.699s
user 0m0.456s
sys 0m0.208s
Not too bad, isn't it ;-) Let me know, what you think.
> If so I'll commit
> it and release later today - else send me the patch set and then I'll
> do the same.
Great, thanks for caring.
Pete
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