On Tue, Sep 01, 2009 at 01:29:45PM -0400, Steve wrote: > > > > > Is there a parameter that sets priority of once backup over another, > > > > > or do all the BackupPC_dump processes start at the same level? > > Maybe > > > > > that would be a $Conf that could be added... > > > > > evets > > > > > > > > That sounds like an interesting suggestion. > > > > > > > > But for your purposes where it seems like you want to de-prioritize > > > > all dumps relative to BackupPC_nightly, maybe just alias the relevant > > > > commands in _InstallDir/bin to include the nice. > > > > > > > > > > I don't think priorities will make much difference. This is much more > > > about disk head position than CPU timeslices. If the nightly process > > > runs at all it's going to keep yanking the head away from where the > > > backup runs want it to be. > > > > > > > Well, then you could always wrap Backup_nightly in a script that > > renices priorities of dump prices to 20 - but that is a certainly not > > pretty and also that assumes that you are running nightly outside of > > your backup window so that no new dumps start... > > Upon reflection, I think Les' point is the most valid - any > competition is going to slow things down and the nice level won't help > a lot. So maybe the $Conf could be a "suspend backups until nightly > admin completed"; that way you wouldn't have to guess a length of > "dark" time; backups would just suspend themselves (leaving partials) > when the admin started, and then resume when it finished... You could > still specify the time of the admins as we do now for the slowest time > of day.
IMO the easiest approach would be: - if BackupPC_nightly starts, it acquires a lock, then waits for backups to complete - no new backups start until BackupPC_nightly finished This should be rather easy since it could be implemented at the central scheduling code - actually BackupPC_nightly wouldn't be started, just the flag would be set that it wants to. I would like such automatism (configurable, of course) as well since it just sucks to guess backup periods and to keep some time reserved for nightly maintenance. Tino. -- "What we nourish flourishes." - "Was wir nähren erblüht." www.lichtkreis-chemnitz.de www.craniosacralzentrum.de ------------------------------------------------------------------------------ Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july _______________________________________________ BackupPC-users mailing list [email protected] List: https://lists.sourceforge.net/lists/listinfo/backuppc-users Wiki: http://backuppc.wiki.sourceforge.net Project: http://backuppc.sourceforge.net/
