On Sat, Jan 18, 2003 at 03:16:24PM +0100, Chris Karakas wrote: > DK Smith wrote: > > Do most amanda configs (with changers) run amdump every weekday (M-F) and skip >running amdump on weekends? I see this sort of idiom stated as "the way" for Amanda, >however I am not so sure this well-documented idiom is actually used in practice. Or >is it? > > > > Well, I use AMANDA mostly during the week, but *I reserve the right* > (and I do use it occasionally) to use it also on weekends. I think > trying to get AMANDA to ignore Saturdays and Sundays in its time > calculations is outside the way it currently functions and would require > extra programming and configuration parameters (perhaps a whole calender > function to click off the days that should not "count" as such...) > which, in the end of ends, will make life more complicated instead of > easier (as it is now, as far as backups are concerned ;-)). > > My experience is that there is absolutely no meaning in trying to mess > with AMANDA and interfere in the way she does the backups - she does it > so optimally, that every other effort will be suboptimal! So let her do > the work and go home! Next day, or Monday, you'll have this or that on > your tapes - 0 levels, 1 levels and so on. So what? You wanted that 0 > level to be on Tuesday? Why? This thinking will only bring you trouble. > The AMANDA "philosophy" is "you press the button, AMANDA decides for > you".
While I agree basically with you there can be cases where the scheduler fights a specific situation. Suppose my Level 0's are 9-10 GB total and I'm using a DDS2 tape with 4GB capacity with a dumpcycle of 3 days. Works well for a single tape/dump usage with the Level 0's spread out. Further suppose I'm a small business with activity and operators available M-F only. Thus I want to do 5 dumps a week. However, every Monday, after missing dumps on 2 days, amanda will believe it is time for Level 0's for everything. No spreading of Level 0's at all. Its not that a specific DLE should get Level 0 on Tuesday, it that they are not scheduled for various days. Because amanda considers the non-dumping days in the dumpcycle, it will fight what the hypothetical business would like. -- Jon H. LaBadie [EMAIL PROTECTED] JG Computing 4455 Province Line Road (609) 252-0159 Princeton, NJ 08540-4322 (609) 683-7220 (fax)
