Amanda-Users

Re: Dumps way too big...

2003-07-09 06:19:15
Subject: Re: Dumps way too big...
From: Gene Heskett <gene.heskett AT verizon DOT net>
To: "Jason P. Pickering" <jasonp AT SIMTech.a-star.edu DOT sg>, amanda-users AT amanda DOT org
Date: Wed, 9 Jul 2003 06:10:09 -0400
On Wednesday 09 July 2003 04:55, Jason P.Pickering wrote:
>I recently added a directory to be backed up and this is the message
> that I get..
>
>I have a holding disk with 15GB space (reserving 30% for degraded
> mode dumps) and I am using a Surestore DAT 24 tape drive with DDS-3
> tapes.
>
>I saw the work around in the FAQ, but google turned up this
>http://groups.yahoo.com/group/amanda-users/message/30947
>
>which said that it may have something to do with the tape definition
> which is...
>
>
>define tapetype HP-DAT24 {
>       comment "HP SureStore DAT 24" #disabled compression
>       length 12288 mbytes
>       filemark 0 kbytes
>       speed 1024 kbytes
>}
>
>
>So, it would seem that even if the Level 1 dump is 5.8 gigs
> (according to the planner) I shuold be able to handle it.
>
>Does anyone know how to correct this?
>
>Thanks and best regards,
>Jason Pickering
>
>Here is the report...
>
>
>FAILURE AND STRANGE DUMP SUMMARY:
>jtlinux.SI //yinling/MyDocuments lev 1 FAILED [dumps way too big,
> must skip incremental dumps]
>
>
>STATISTICS:
>                          Total       Full      Daily
>                        --------   --------   --------
>Estimate Time (hrs:min)    0:05
>Run Time (hrs:min)         3:51
>Dump Time (hrs:min)        1:47       0:37       1:09
>Output Size (meg)       10908.0     4595.9     6312.1
>Original Size (meg)     13242.7     6705.8     6536.9
>Avg Compressed Size (%)    66.6       68.5       20.4  
> (level:#disks ...) Filesystems Dumped            6          1      
>    5   (1:5) Avg Dump Rate (k/s)      1743.9     2104.8     1550.4
>
>Tape Time (hrs:min)        3:07       1:19       1:48
>Tape Size (meg)         10908.2     4595.9     6312.3
>Tape Used (%)              88.8       37.4       51.4  
> (level:#disks ...) Filesystems Taped             6          1      
>    5   (1:5) Avg Tp Write Rate (k/s)   996.8      995.8      997.5
>
>DUMP SUMMARY:
>                                     DUMPER STATS            TAPER
> STATS HOSTNAME     DISK        L ORIG-KB OUT-KB COMP% MMM:SS  KB/s
> MMM:SS  KB/s --------------------------
> --------------------------------- ------------ jtlinux.SIMT
> -ble/jasonp 1  590240 590272   --   10:18 955.1   9:52 996.4
> jtlinux.SIMT -design/rct 0 FAILED
> --------------------------------------- jtlinux.SIMT -yDocuments 1
> 58145205814560   --   56:271716.9  96:55 999.8 jtlinux.SIMT
> -yDocuments 1 FAILED ---------------------------------------
> jtlinux.SIMT /etc        1     690    128  18.6   0:21   3.7   0:06
>  21.2 jtlinux.SIMT /home       0 68667004706208  68.5  37:162104.8 
> 78:46 995.8 jtlinux.SIMT /var        1  287750  58688  20.4   2:19
> 422.9   1:00 976.8 jtlinux.SIMT hda6        1     580    128  22.1 
>  0:04  22.1   0:06  20.9
>
>(brought to you by Amanda version 2.4.3)

It would appear that one of the entry's in the disklist has been 
duplicated.

However, this would appear to be a good example of why tar should be 
used so that disklist entries can be broken down into smaller pieces, 
thereby facilitating amanda's ability to juggle schedules.  With a 
DDS3 tape, if each entry was no more than 2 Gb, then amanda has a lot 
more wiggling room at add or subtract from the individual nights 
schedule.  Amanda tries to use a similar amount of tape each run.  
Here, for 2 machines, both of which have the /usr dirs broken down 
into subdirs, I have 45 entries in the disklist right now, and slowly 
adding to the firewalls section of the list.  Some of course are less 
than 100 megs for a level 0, but this gives amanda the ability to 
fill a DDS2 tape to the mid 90% area every night.  From the above, 
I'd break both /home, and /Documents up into at least 3 pieces each.

-- 
Cheers, Gene
AMD K6-III@500mhz 320M
Athlon1600XP@1400mhz  512M
99.26% 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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