Amanda-Users

Antwort: Re: Incredible slow write / Converting tapes

2005-01-11 08:24:19
Subject: Antwort: Re: Incredible slow write / Converting tapes
From: S.Krumme AT stadt-duisburg DOT de
To: amanda-users AT amanda DOT org
Date: Tue, 11 Jan 2005 14:18:22 +0100

Hi Paul,

no, no. 32 Kbytes of course not 32 bytes.

I am using a Compaq 40/80 DLT drive and as far as I can remember I had to do this setting to get the whole thing working.

Kind regards

Sandra Krumme





Paul Bijnens <paul.bijnens AT xplanation DOT com>

11.01.2005 14:14

An
S.Krumme AT stadt-duisburg DOT de
Kopie
amanda-users AT amanda DOT org
Thema
Re: Incredible slow write / Converting tapes





S.Krumme AT stadt-duisburg DOT de wrote:
>
> after moving my backup hard- and software to another machine, I
> encountered several problems. One was due to faulty tapes, the other due
> to the fact that I didn´t knew the blocksize I set the tape device on
> the old machine.
> These problems I had resolved by using fresh tapes and by setting the
> default block size of the tape device to 32, which was the original
> setting.

blocksize of 32 bytes?  Or do you mean 32 Kbytes?


>
> Now my backup is up an running again. But when I start amdump, the
> filesystems are dumped quickly as usual, but when the taper starts
> writing it takes extremly long.
> Here is an example:
>
> 10.0.1.5:/                    1    55424k writing to tape (12:20:40)
>
> Now its 13:42 and it is still writing.
>
> Any idea whats wrong now ?


If the blocksize if 32 bytes, then, yes, that is incredebly slow.

Personally, I prefer the variable block tape device (by setting default
blocksize to zero), and specify the blocksize I need using the programs
(32Kbyte by default for amanda, or "dd bs=..." etc.)



--
Paul Bijnens, Xplanation                            Tel  +32 16 397.511
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