Hi, Les Mikesell wrote on 2017-12-12 09:39:41 -0600 [Re: [BackupPC-users] Host Priority Option]: > On Tue, Dec 12, 2017 at 8:19 AM, Gurvinder <gurvin...@techblue.co.uk> wrote: > > > > I have been using BackupPc from past few months however I could not find > > any option where I can prioritize hosts for backups from the list of hosts > > we add. Let say i have 10 hosts added for backup, now I want specific > > hosts to start backups earlier than other backup hosts.
"earlier" is not the same as "prioritize". You can achieve "earlier" with different blackout windows. "Prioritize", on the other hand, is difficult to even meaningfully define. If host A is "more important than" host B, does that change when host A has had a successful backup every day for a whole month and host B has never had a single one (i.e. are backups for host A mandatory and for host B optional)? BackupPC assumes you want backups for all your hosts and tries to "do the right thing". Put differently, what situation are you envisioning where there is not enough capacity to backup all hosts you are trying to backup? Maybe you need to fix the concept (like add more backup servers, faster media, decrease backup volume, whatever) instead of working around problems? I do understand that there may be transient problems (like unusual amounts of new data in your backup set) where regular backups of host A are more important than of host B, but that sounds like "earlier", and will only fix itself without manual intervention if it is the "more important" (i.e. "earlier") hosts with the large amount of data (or if you let BackupPC proceed as it is programmed to do, hopefully ;-). Note that blackout windows might not work exactly as you expect. A running backup will not be stopped when entering its blackout window, and the check, I believe, is done when the backup is run, not when it is queued (queueing happens according to the WakeupSchedule, running might happen any time another backup finishes, subject to your MaxBackups setting, which could be hours after queueing). In any case, an overly long backup for host B might prevent a backup for host A from starting. I don't see any way within BackupPC to prevent this. Again, this greatly depends on what kind of problems you are expecting. > I don't think there is a setting to force an order - they are just > scheduled as the age of the previous backup hits the interval set > between them. You can manage it with a manual intervention, like > starting a backup on the one(s) you want to happen first just before > the blackout time ends. If everything has the same schedule, these > will continue to run first as long as everything completes in order. Working with blackout windows and the periods, you can probably force this. Let the blackout window for the "earlier" backup end at least one wakeup earlier and keep the periods smaller so that it will run on the first wakeup after the blackout even if it runs longer. Remember, it only needs to *start* within the blackout window ... Finally, the order, in which hosts are queued, is defined something like: * hosts with errors before hosts without errors * hosts with older last good backups earlier * alphabetically on host name (presuming previous backup age identical to the second, which seems rather unlikely, unless there are no previous backups) So host names might actually provide a way to start backups in the right order on a new BackupPC installation :-) (hint: ClientNameAlias). And, of course, to document your "priorities" and make it easy to check whether things are backing up in the right order. Hope that helps. Regards, Holger ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ BackupPC-users mailing list BackupPC-users@lists.sourceforge.net List: https://lists.sourceforge.net/lists/listinfo/backuppc-users Wiki: http://backuppc.wiki.sourceforge.net Project: http://backuppc.sourceforge.net/
