On (11/13/10 18:57), Vincent Cappe wrote: -~> Allan McRae <allan@archlinux.org> wrote: -~> > Surely someone can run a git bisect on this issue. It is a reasonably -~> > new occurrence. -~> -~> Except that the @daily bug only trigger every 24 hours or so. A little -~> too time consuming for git bisect, i would say. -~> -~> But, there is a way around this: overriding the libc time() and -~> localtime() functions with LD_PRELOAD to trick crond into thinking -~> time passes quicker than it actually do. libfaketime[1][2] can do -~> this. So you can launch crond with something like this (as root): -~> -~> # faketime -f '+0 x30'./crond -s /tmp/systabs -c /tmp/usertabs -t /tmp/stamps -d -~> -~> which will make @hourly happen about every two minutess and @daily about -~> every 48 minutes. note: using x60 and above will utterly confuse crond -~> (Not a Bug), so don't do that. -~> -~> Combine with a crontab like this: -~> @hourly ID=hourly echo "HOURLY $(date)" >> /tmp/dcron-test -~> @daily ID=daily echo "DAILY $(date)" >> /tmp/dcron-test -~> @weekly ID=weekly echo "WEEKLY $(date)" >> /tmp/dcron-test -~> @monthly ID=monthly echo "MONTHLY $(date)" >> /tmp/dcron-test -~> -~> You can then monitor /tmp/dcron-test and see if jobs are scheduled -~> correctly. -~> -~> Also the TZ environment variable can be useful (see 'info libc tz'). -~> But, i was not able to reproduce the "@hourly run only once every -~> two hours" problem with neither TZ=FOO-1BAR-2,N10,N350 , nor -~> 'export TZ=:/usr/share/zoneinfo/Europe/Paris; faketime -f -60d ./crond ... -d'. -~> -~> So, it seems DST alone is not enough to trigger it. Presumably, it -~> also depends upon the content of the timestamp files ? -~> -~> I never saw the @daily bug, personally. -~> -~> [1] http://www.code-wizards.com/projects/libfaketime/index.html -~> [2] http://aur.archlinux.org/packages.php?ID=24381 -~> -~> -- -~> Sent thru gmane, let's see if it works. And I don't recall seeing any of this with dcron 4.4-1. I have fcron installed everywhere, so... but as long as you seem to be playing with this, could you please try with 4.4-1? It should be available through SVN... -- lisaev@svibor