A couple of comments on your *concerns*

1. Have you the slightest idea how it's done in the reality?
    That's standard procedure to restore full backup plus all 
    incrementals you have, if you invented some other schema,
    please let me know 
    (at work we're currently backing up between 15-20 TB / night)
2. What's worse? Dataloss or too much data!!! ;-) 
    It's up to you to decide that, we do prefer to have more data 
    than less data, that can always be overcome to reduce the duplicate ones,
    the non-existing ones are a lot more difficult to get.
    Regarding finding files, so is flexbackup similar to how the 
    EMC Networker, Veritas Netbackup, HP Data Protector
    is working, they are all depending on your index/internal database 
    over all files to get to them quickly.
3. All help is welcome, the open-source community needs
    people that make helpful work.
    Regarding Tape management so privately I'm just backing up to disk,
    is a lot easier and cheaper than to buy a tape library at home.
    (do got several DAT Exchanger at home, but is not just using them)


On Fri 28 July 2006 14:23, Peter Valdemar Mørch wrote:
> I'm searching for a linux backup solution. And flexbackup is almost it!
> There are three things that make me continue looking for other solutions:
> 1) Crashev has asked these questions (twice):
> > My question is - how to restore fully latest backup ? I mean if my
> > system fails today and I want to have the freshest backup restored -
> > how to do it with flexbackup? Should I extract fullbackup with *.0.*
> > and then overwrite files with other days backups or how does it work?
> >  The other thing is how to to tell apart differential from
> > incremental in such scenerio?
> These are *very* reasonable questions to be asking of my backup system.
> How do I reliably recreate the "last good state"? Any backup system that
> can't answer these questions are not up to the job, IMHO.
> 2) Pablo Godel asked: incremental backups and deleted files
> Basically, if I delete files and make incremental backups, the deletion
> of these files is not recorded in the incremental backups. So no, it is
> in fact impossible to reliably get to the last good state.
> Also, FAQ "How do I find out which archive(s) contain a certain file?"
> on http://www.edwinh.org/flexbackup/faq.html mentions:
> > If you don't know in which archive to find a certain file, look at
> > the log files. As long as you have verbose turned on (default), you
> > can just 'zgrep filename /var/log/flexbackup/*.gz', and that works
> > pretty well.
> No, that doesn't work very well. It *sucks*! (Especially if you have to
>   restore 12342345 files and you don't know what they are.) There seems
> to be no way to automatically and reliably restore/extract a backup set.
> Adding just a little meta-data to the created backups could enable this
> functionality: I'm thinking a -search option to find the relevant
> archives and -restore to extract from the relevant archives.
> 3) There are three Project Admins: edwinh, jjreynold and pholcomb.
> EdwinH, the only one to ever post to the mailing list, last did so
> 2004/01/30 - over two years ago. Basically the project is without
> contributors and maintainers.
> I'm tempted to take a stab at adding the meta data to the created and
> backuped data and implementing -restore and -search. I've just never
> used a tape backup system, only to-disk. Would anybody we willing to
> test any such enhancements on a tape-drive?
> Peter
> ---------------------------------------------
> #!/bin/bash
> # I'd like to be able to restore src with newest file2,
> # file3 and file4 in it. (And no file1)
> # Impossible with current flexbackup, though.
> mkdir src
> echo line > src/file1
> echo line > src/file2
> echo line > src/file3
> echo line > src/file4
> flexbackup -c flexbackup.conf -set test -level 0
> rm src/file1
> echo anotherline > src/file2
> chmod go-rwx src/file3
> ls -l src
> sleep 60
> flexbackup -c flexbackup.conf -set test -level 1


Robert Worreby
Birkenweg 82
CH-3123 Belp

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