Re: Wrong Hanoi backup scheme

Hi, Martin.

Thank you for your comments.

In some way I inherited the Sarab project and have not checked all the
items in there, so you may very well be right with the wrong toh backup
scheme. I'll check on that and probably make use of the code supplied by
you.

Do you make use of the sarab script so far?

Hiran


Am Dienstag, den 16.02.2010, 16:27 +0100 schrieb Martin Zuther:
> Hi!
> 
> I have just had a look at SaraB because I want to use DAR and like the 
> idea of cycling backups.  On doing that, the Hanoi rotation examples 
> struck me as wrong.  For example, the file "toh-3-tapes" currently has 
> the following contents:
> 
> A
> B
> A
> C
> A
> B
> A
> D
> A <-- that and the following lines shouldn't be here
> B
> A
> C
> A
> 
> But in my opinion, it should read as:
> 
> A
> B
> A
> C
> A
> B
> A
> D
> 
> I did a little research (http://www.computer-repair.com/Backup.htm,
> http://en.wikipedia.org/wiki/Backup_rotation_scheme, and others), and it 
> seems that I am right.
> 
> I have thus changed the file "generate_toh.sh" (it needs to cut off more 
> than *one* line!) and cleaned up the code so it runs on current versions 
> of bash.  As a side note, you'll also have to change EOL encoding of 
> this file from "DOS" to "LINUX".  I was too lazy to write a recursive 
> function, so I have put "bc", a shell calculator, to good use. 
> Moreover, I have updated all the "toh_X_tapes" files so they reflect the 
> change.
> 
> Please find the patch attached.  I'm yearning for comments... ;)
> 
> Best regards,
> 
> Martin
> --
> www.mzuther.de
> www.radix-musik.de
> 
> ------------------------------------------------------------------------------
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