-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

Jon LaBadie said the following:
> On Fri, Nov 04, 2005 at 11:36:39AM +0100, Nicki Messerschmidt, 
> Linksystem Muenchen GmbH wrote:
>> Paul Bijnens said the following:
>>> Nicki Messerschmidt, Linksystem Muenchen GmbH wrote:
>>>> has anyone a setup where the rait driver of amanda is used to 
>>>> place Backups onto tapes and virtual tapes (using the 
>>>> chg-multi) at the same time? Are there drawbacks and what 
>>>> problems could arise? I already use both of them separate (on 
>>>> different hosts), but I'm not sure about the rait setup...
>>> I'm planning so set up something like that over the next weeks. 
>>> I'll summarize on the list when I get to it.
>> Would be nice. As I read the RAIT driver only does RAIT-5, but I 
>> want RAIT-1. Or is there some other way for mirroring tapes?
> I'm not certain of this because reading the docs I saw doesn't 
> mention it. However ...
> 
> If I recall correctly, since the amanda RAIT driver tries to do a 
> parity drive, impossible with only two drives, if you have only two 
> drives specified it falls back to a mirror configuration.
O.k. I tried it today and using the chg-multi changer script with
entries like:
slot 1: rait:{tape:/dev/nst0,file:/some/path}
I was able to do some backups after both the virtual tape and the real
tape had the same label. If they differed I got a
"Numeric value of of domain" error.
Restore using amrecover failed out of the box with the same error. When
I set the tape device to either on of the rait component it worked well.


Cheers
Nicki

- --
Linksystem Muenchen GmbH                          info AT link-m DOT de
Schloerstrasse 10                           http://www.link-m.de
80634 Muenchen                              Tel. 089 / 890 518-0
We make the Net work.                       Fax 089 / 890 518-77
PGP Keys:                             https://www.link-m.de/pgp/
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.0 (MingW32)
Comment: Get keys at: https://www.link-m.de/pgp

iD8DBQFDa9Rw6zWc+bXuIEMRAvC1AJ9p4SHY+cUKTKM2kvoErVRTXOIs6gCgkkvx
JrTfNxLkUa3/qYBbLZ0FhEI=
=Gqb3
-----END PGP SIGNATURE-----