Hello, Thank for all the comments. The issue is with weekly cron On Saturday, /etc/cron.weekly/backup.cron is run twice Here is /etc/anacrontab #period in days delay in minutes job-identifier command 1 5 cron.daily nice run-parts /etc/cron.daily 7 25 cron.weekly nice run-parts /etc/cron.weekly @monthly 45 cron.monthly nice run-parts /etc/cron.monthly and here /etc/crontab 22 23 * * * root run-parts /etc/cron.daily 30 12 * * 6 root run-parts /etc/cron.weekly I understand that if I set dotlockfile -l at the beginning of my /etc/cron.weekly/backup.cron and dotlockfile -u at the end of the same file I must avoid to run /etc/cron.weekly/backup.cron at the same time, but it does not prevent to run /etc/cron.weekly/backup.cron twice (sequentially) in the same day (like today). =========================================================================== Patrick DUPRÉ | | email: pdupre@xxxxxxx Laboratoire interdisciplinaire Carnot de Bourgogne 9 Avenue Alain Savary, BP 47870, 21078 DIJON Cedex FRANCE Tel: +33 (0)380395988 | | Room# D114A =========================================================================== > Sent: Saturday, December 11, 2021 at 5:08 PM > From: "Jonathan Billings" <billings@xxxxxxxxxx> > To: "Community support for Fedora users" <users@xxxxxxxxxxxxxxxxxxxxxxx> > Subject: Re: crond/anacron > > > > > On Dec 11, 2021, at 10:38, Jonathan Billings <billings@xxxxxxxxxx> wrote: > > > > The thing is, Anacron only runs if you boot after the scheduled job is supposed to run out of cron. It shouldn’t run twice. So maybe you have your backups scheduled in more than one place? > > I should be extra clear here - Anacron is what runs the cron.daily (and weekly, monthly) jobs. They just will also run shortly after boot on the hour if you boot later in the day. Disabling Anacron will break the cron.daily, cron.weekly, cron.monthly jobs. > > So there’s no way they’d run twice unless you have it in more than one scheduling service/location. > > — > Jonathan Billings > _______________________________________________ > users mailing list -- users@xxxxxxxxxxxxxxxxxxxxxxx > To unsubscribe send an email to users-leave@xxxxxxxxxxxxxxxxxxxxxxx > Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ > List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines > List Archives: https://lists.fedoraproject.org/archives/list/users@xxxxxxxxxxxxxxxxxxxxxxx > Do not reply to spam on the list, report it: https://pagure.io/fedora-infrastructure > _______________________________________________ users mailing list -- users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to users-leave@xxxxxxxxxxxxxxxxxxxxxxx Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/users@xxxxxxxxxxxxxxxxxxxxxxx Do not reply to spam on the list, report it: https://pagure.io/fedora-infrastructure