Ok, I didn't but think I do now.
Basically when amanda write to the holding disk, it rights it to a flat file
on the file system, and if that flat file is larger than 2gb then you might
encounter a problem if your filesystem has a limitation where it can only
support files <2gb.
But if you write directly to tape you will avoid this problem cause you are
bypassing the filesystem.


Right Adrian?

Hope I got it right, but this makes sense.

Pedro

-----Original Message-----
From: Wayne Richards [mailto:[EMAIL PROTECTED]]
Sent: Tuesday, January 15, 2002 10:12 AM
To: Adrian Reyer
Cc: Pedro Aguayo
Subject: Re: ["data write: File too large"]


I don't understand the problem.  When amanda encounters a filesystem larger
than the holding disk, she AUTOMATICALLY resorts to direct tape write.
Quoting from the amanda.conf file:
# If no holding disks are specified then all dumps will be written directly
# to tape.  If a dump is too big to fit on the holding disk than it will be
# written directly to tape.  If more than one holding disk is specified then
# they will all be used round-robin.

We routinely backup filesystems larger than our holding disks and many files
>
4GB.


> On Tue, Jan 15, 2002 at 09:14:33AM -0500, Pedro Aguayo wrote:
> > But, I think Edwin doesn't have this problem, meaning he says he doesn't
> > have a file larger than 2gb.
>
> I had none, either, but the filesystem was dumped into a file as a
> whole, leading to a huge file, same with tar. The problem only occurs
> as holding-disk is used. Continuously writing a stream of unlimited
> size to a tape is no problem, but as soon as you try to do this onto a
> filesytem, you run in whatever limits you have, mostly 2GB-limits on a
> single file.
> No holding-disk -> no big file -> no problem. (well, tape might have
> to stop more often because of interruption in data-flow)
>
> Regards,
>       Adrian Reyer
> --
> Adrian Reyer                             Fon:  +49 (7 11) 2 85 19 05
> LiHAS - Servicebuero Suttgart            Fax:  +49 (7 11) 5 78 06 92
> Adrian Reyer & Joerg Henner GbR          Mail: [EMAIL PROTECTED]
> Linux, Netzwerke, Consulting & Support   http://lihas.de/



---
Wayne Richards                          e-mail: [EMAIL PROTECTED]


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