Now you're outside of my limited expertise with Amanda :-) I have only handled
backups to a single tape drive, no changers. There is plenty of experience on
the amanda-users list though so I'm gonna hand it off to them.

And, actually your English is just fine!

Sébastien GALLET wrote:

> But amanda supports backups on several tapes (after debugging chg-manual
> ;) )
> Actually, i can backup my divx (40 files, 27 GB) on 2 tapes. Amdump and
> amverify seems to be ok with this. I don't try amrecover.
>
> I think that amanda has an error counter inside. And after a number of
> tape errors (bad blocks), she fails, thinking the tape is bad. Actually,
> there's some errors on my tapes (but they are catched and repaired by
> the onstream driver). I think this counter is not  putting to zero after
> changing a tape.
> What do you think about this ???
>
> I'm really sorry for my poor english
>
> Scott Sanders a écrit:
>
> >Actually chunksize in the amanda.conf refers more to the largest single
> >file your OS can handle not how big of a chunk it hands to the tape drive.
> >
> >I was just guessing from the output in your email that you were trying to
> >back up individual files that are 15GB. If you are just backing up
> >individual MP3's then you'll just need to try and back up smaller
> >directories of them. If the directory, or file system, you are trying to
> >back up is larger than a single tape amanda will fail.
> >
> >Sébastien GALLET wrote:
> >
> >
> >
> >>I've tried 2 chunksize : 2GB and 1GB.
> >>I will try 512 MB and see
> >>Thanks
> >>
> >>Scott Sanders a écrit:
> >>
> >>
> >>
> >>>taper is the proccess trying to write to the tape. It failed 3 times
> >>>and gave the error about too many retries.
> >>>
> >>>Are you having any trouble writing smaller files to tape? It looks
> >>>like you're trying to get files that are *just* under 15GB onto those
> >>>15GB tapes. Maybe you should try sending the mp3's in smaller chunks.
> >>>
> >>>Sébastien GALLET wrote:
> >>>
> >>>
> >>>
> >>>> And what about the [too many taper retries] error
> >>>>
> >>>>    ----- Original Message -----
> >>>>    *From:* Scott Sanders <mailto:ssanders AT conceptsdirectinc DOT com>
> >>>>    *To:* Sébastien GALLET <mailto:sgallet AT ibourgogne DOT net>
> >>>>    *Sent:* Wednesday, August 21, 2002 10:04 PM
> >>>>    *Subject:* Re: Multi-Tape error
> >>>>     Well the "No space left on device" error leads me to believe
> >>>>    that you either ran out of tape of the file it's trying to write
> >>>>    is larger than the amount of tape amanda thinks she has left.
> >>>>
> >>>>    Sébastien GALLET wrote:
> >>>>
> >>>>
> >>>>
> >>>>>    I'm trying to backup my mp3 collection (a little more than 60
> >>>>>    Gb) on my onstream DI-30 tape (15 Gb).The 2 first tapes work
> >>>>>    fine but when backing up on the third, amdump stops and report
> >>>>>    this : shining    /var/datacentre/mp3 lev 0 FAILED [too many
> >>>>>    taper retries] NOTES:
> >>>>>      taper: tape Mp3Set1 kb 14752480 fm 1 writing file: No space
> >>>>>    left on device
> >>>>>      taper: retrying shining:/var/datacentre/mp3.0 on new tape:
> >>>>>    [writing file: No space left on device]
> >>>>>      taper: tape Mp3Set2 kb 14754112 fm 1 writing file: No space
> >>>>>    left on device
> >>>>>      taper: retrying shining:/var/datacentre/mp3.0 on new tape:
> >>>>>    [writing file: No space left on device]
> >>>>>      taper: tape Mp3Set3 kb 0 fm 0 [OK] What does it mean ???TIA
> >>>>>
> >>>>>
> >
> >
> >