Amanda-Users

Re: how to split partitions

2006-03-17 08:42:37
Subject: Re: how to split partitions
From: Paul Bijnens <paul.bijnens AT xplanation DOT com>
To: listrcv <listrcv AT condor-werke DOT com>
Date: Fri, 17 Mar 2006 14:38:28 +0100
On 2006-03-17 13:36, listrcv wrote:
dumper: FATAL error [dumper PORT-DUMP: too many args: 19 != 12]

Besides the error (no spaces allowed in include/exclude strings),
the word "PORT-DUMP" here in this context indicates that this
dump is bypassing the holdingdisk.

Note that dumping immediately to tape bypassing holdingdisk usually
results in the well-known shoe-shining effect of the tapedrive:
because the datastream frequently cannot keep up with the tapespeed,
the tapedrive has to stop, rewind a little, and start again.

This has a dramatic effect on the lifetime of your tapes and tapedrive!

Moreover, the effect of this is a very slow dump progress (usually
happening on one of the largest dumps), and even doing all at the
end when nothing can be done in parallel either.

If you are using vtapes, than ignore my comments (but see also:
http://wiki.zmanda.com/index.php/File_driver#Holdingdisk_and_vtapes).

If you did forget to configure a holdingdisk (or created it too small),
better do something about it.


--
Paul Bijnens, xplanation Technology Services        Tel  +32 16 397.511
Technologielaan 21 bus 2, B-3001 Leuven, BELGIUM    Fax  +32 16 397.512
http://www.xplanation.com/          email:  Paul.Bijnens AT xplanation DOT com
***********************************************************************
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* F6, quit, ZZ, :q, :q!, M-Z, ^X^C, logoff, logout, close, bye, /bye, *
* stop, end, F3, ~., ^]c, +++ ATH, disconnect, halt,  abort,  hangup, *
* PF4, F20, ^X^X, :D::D, KJOB, F14-f-e, F8-e,  kill -1 $$,  shutdown, *
* init 0, kill -9 1, Alt-F4, Ctrl-Alt-Del, AltGr-NumLock, Stop-A, ... *
* ...  "Are you sure?"  ...   YES   ...   Phew ...   I'm out          *
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