Amanda-Users

Re: Problem with compression?

2003-02-21 17:50:36
Subject: Re: Problem with compression?
From: Jay Lessert <jayl AT accelerant DOT net>
To: John Oliver <joliver AT john-oliver DOT net>
Date: Fri, 21 Feb 2003 13:23:53 -0800
[posted and Cc'ed]

On Fri, Feb 21, 2003 at 11:51:59AM -0800, John Oliver wrote:
> I got this report from amanda.  It looks to me like it's reporting that
> it used 48.9% of the tape (a DLT 4000 20/40GB), but that it ran out of
> space.  

Let's see....

>                           Total       Full      Daily
>                         --------   --------   --------
> Output Size (meg)        9737.1     9611.4      125.7
> Original Size (meg)     19162.4    19028.8      133.6
> Avg Compressed Size (%)    50.8       50.5       94.1
> Filesystems Dumped           18         17          1   (1:1)
> 
> Tape Size (meg)          9738.0     9612.2      125.8
> Tape Used (%)              48.9       48.2        0.6
> Filesystems Taped            18         17          1   (1:1)

This is telling you what actually got on the tape, or on holdingdisk.
But unless I'm a bozo, (always a good possibility) your disklist is >18
entries long, correct?

>   taper: tape Indyme008 kb 20040128 fm 19 writing file: No space left on  
> device

taper died after writing 20GB, while writing the 19th (not 18th) DLE.

>                                      DUMPER STATS            TAPER STATS 
> HOSTNAME     DISK        L ORIG-KB OUT-KB COMP% MMM:SS  KB/s MMM:SS
> KB/s
> -------------------------- ---------------------------------  ------------
> backup       /dev/hda1   1 FAILED

So the 19th DLE was backup:/dev/hda1, and it was big, >10GB.  Either
the estimate was smaller than reality (uncompressible data, new data,
etc., you can take a look at the sendsize debug file in
backup:/tmp/amanda), and/or amanda could not get a level>0 to work.

Since we're seeing 18 fulls and 1 daily, it smells like you're dumping
a whole bunch of new DLE's on amanda at the same time?  If so, you'll
probably be OK tonight, just don't put any more new DLE's in.

-- 
Jay Lessert                               jay_lessert AT accelerant DOT net
Accelerant Networks Inc.                       (voice)1.503.439.3461
Beaverton OR, USA                                (fax)1.503.466.9472