This is what I do to keep my tapes in sequence.

Say I have the following tape list.

        20061010200953 D00025 reuse
        20061009201023 D00024 reuse
        0 D00023 reuse
        20061009141704 D00022 reuse
        20061008200944 D00021 reuse

I change the time for D00023 to something in between D00022 and D00024. Such
as 

        20061010200953 D00025 reuse
        20061009201023 D00024 reuse
        20061009141904 D00023 reuse
        20061009141704 D00022 reuse
        20061008200944 D00021 reuse

I have several L0 dumps so for me this is not a problem. It is best to do
this as time gets closer to the date you want to change to.

To keep things in order I always run 

        sort -r  oldtapelist > new tapelist

The output will be sorted as above. The next tape on my list is always the
bottom tape. 

Since I have been running amanda (3 years) my daily tapes have always been
in sequence.

Now my "amadmin config tape" list the correct tapes that will be used next. 

There is no rocket science in what I am doing but it works for me.

Robert




_____________________________________________________________________
Robert P. McGraw, Jr.
Manager, Computer System                 EMAIL: rmcgraw AT purdue DOT edu
Purdue University                         ROOM: MATH-807
Department of Mathematics                PHONE: (765) 494-6055
150 N. University Street                   FAX: (419) 821-0540
West Lafayette, IN 47907-2067            


> -----Original Message-----
> From: owner-amanda-users AT amanda DOT org [mailto:owner-amanda-users AT 
> amanda DOT org]
> On Behalf Of Steve Wray
> Sent: Tuesday, October 17, 2006 4:03 PM
> To: amanda-users AT amanda DOT org
> Subject: Re: tape order
> 
> 
> Jon LaBadie wrote:
> > On Tue, Oct 17, 2006 at 11:44:53AM -0400, Steven Settlemyre wrote:
> >> I have 24 tapes and a 8 tape changer. For some reason, it is going
> >> 13->16->15->14->17. How can I fix this? can i just force it to take 14
> >> after 13 by only having 14 in there when it's expecting 16? My
> tapecycle
> >> is 10.
> >
> > As Michael suggests, your human ordering is VERY likely
> > to get out of sequence.  Best to forget about it.
> 
> This has been bugging me for years.
> 
> It makes daily off-site storage of backup tapes problematic; the
> data-vault outfits typically need to know 24 hours in advance which tape
> they should bring to your site as they need to plan the route for their
> van.
> 
> If you request that they send you a tape at 'short notice' they will
> typically charge extra for this.
> 
> I've been looking for a way to get amanda to try to predict which tape
> it will want next in good time (a schedule for the next 3 days or so
> would be ideal). No luck so far...

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