Amanda-Users

Re: chunksize

2003-10-24 06:59:00
Subject: Re: chunksize
From: Gene Heskett <gene.heskett AT verizon DOT net>
To: Frank Smith <fsmith AT hoovers DOT com>, Paul Yeatman <pyeatman AT ucsd DOT edu>
Date: Fri, 24 Oct 2003 06:54:33 -0400
On Friday 24 October 2003 00:22, Frank Smith wrote:
>--On Thursday, October 23, 2003 21:06:36 -0700 Paul Yeatman 
<pyeatman AT ucsd DOT edu> wrote:
>>> Chunksize was originally a workaround for some filesystems file
>>> size limitations.  When in use, the ONLY place it effects is the
>>> holding disk by breaking up a huge 30 gig total filesystem into
>>> files that it can handle in say, 2 gig hunks.  These files are
>>> merged into one big file on the tape itself, and all chunks must
>>> be completed for a given filesystem before the transfer to the
>>> tape begins.  And all chunks must have been written to the tape
>>> before any chunks are deleted from the holding disk.
>>
>> Thanks for the reply.  Is there any such setting then that would
>> perform what I was once was lead to believe chunksize could
>> control, ie. specifying a file size over which a backup file
>> should be written directly to tape, bypassing the holding disk?
>
>For the filesystems you want to go directly to tape, use a dumptype
>that specifies 'holdingdisk no'.
>   I'm not sure why you would want to not use a holdingdisk (unless
>you are using the FILE driver), it is generally more efficient to
> use one.
>
>Frank

Thanks for the reminder Frank.  I shouldn't post before my first 
caffiene infusion I guess.

>> --
>> Paul Yeatman       (858) 534-9896        pyeatman AT ucsd DOT edu
>>           ==================================
>>           ==Proudly brought to you by Mutt==
>>           ==================================

-- 
Cheers, Gene
AMD K6-III@500mhz 320M
Athlon1600XP@1400mhz  512M
99.27% setiathome rank, not too shabby for a WV hillbilly
Yahoo.com attornies please note, additions to this message
by Gene Heskett are:
Copyright 2003 by Maurice Eugene Heskett, all rights reserved.


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