[gentoo-user] Linux, reiserfs and file fragmentation

[Dale]

Hi,

I'm not wanting to start a flame or anything but I have a question, or 
two, on file fragmentation.  I have three hard drives here.  This is how 
they are partitioned at the moment:

> root@smoker / # df
> Filesystem               1K-blocks            Used
> Available         Use%         Mounted on
> /dev/hda6                19530340            7689400        11840940
>         40%         /
> /dev/hda1                189339                7741
> 171822               5%            /boot
> /dev/hda7                4882532            1805104
> 3077428          37%            /usr/portage
> /dev/hda8                4882532            1402172
> 3480360          29%            /home
> /dev/hdb1                78145768            15171752
> 62974016        20%            /data
> root@smoker / #


So you won't freak out, I removed the system generated file systems.  I 
use reiserfs on everything except /boot.  It has ext2.  I found a 
program, script really, that will tell how fragmented a file system is.  
This is what it reports:

> root@smoker / # /root/fragck.pl /usr/portage/
> 2.93016639526831% non contiguous files, 1.10476912422558 average
> fragments.
> root@smoker / #
> /root/fragck.pl /data/
> 4.64526022181977% non contiguous files, 1.08609726757175 average
> fragments.
> root@smoker / #
> /root/fragck.pl /home/
> statfs: No such file or directory
> Use of uninitialized value in pattern match (m//) at /root/fragck.pl
> line 32.
> Use of uninitialized value in concatenation (.) or string at
> /root/fragck.pl line 41.
>  : not understand for
> /home/dale/.googleearth/Registry/google/gecommonsettings/User/layers/hiking\
> and\ mountain\ bike\ trails\
> .
> 6.4034151547492% non contiguous files, 2.34827463536108 average fragments.
> root@smoker / #


The big one:

> root@smoker / # /root/fragck.pl /
> statfs: No such file or directory
> sh: en_1ca_4278190280: command not found
> sh: wm_6: command not found
> sh: wp_#usr#kde#3.5#share#wallpapers#here-gear.svgz_1196427186:
> command not found
> sh: blm_0: command not found
> sh: 01.png: command not found
> Use of uninitialized value in pattern match (m//) at /root/fragck.pl
> line 32.
> Use of uninitialized value in concatenation (.) or string at
> /root/fragck.pl line 41.
>  : not understand for
> /var/tmp/kdecache-root/background/143x115_bm_0;en_1ca_4278190280;wm_6;wp_\#usr\#kde\#3.5\#share\#wallpapers\#here-gear.svgz_1196427186;blm_0;01.png
> .
> statfs: No such file or directory
> sh: en_1ca_4278190280: command not found
> sh: wm_6: command not found
> sh: wp_#usr#kde#3.5#share#wallpapers#here-gear.svgz_1192962680:
> command not found
> sh: blm_0: command not found
> sh: 01.png: command not found
> Use of uninitialized value in pattern match (m//) at /root/fragck.pl
> line 32.
> Use of uninitialized value in concatenation (.) or string at
> /root/fragck.pl line 41.
>  : not understand for
> /var/tmp/kdecache-root/background/143x115_bm_0;en_1ca_4278190280;wm_6;wp_\#usr\#kde\#3.5\#share\#wallpapers\#here-gear.svgz_1192962680;blm_0;01.png
> .
> 7.03979903669298% non contiguous files, 1.22497799280025 average
> fragments.
> root@smoker / #

Please pardon the error message.  I use the script, I didn't write it.  :/ 

I understand that doing the root directory is sort of a sum of all the 
others so it may be a little misleading to say the least.

My questions; is this badly fragmented?  How can I "unfragment" all the 
files and not bork something up badly? 

My opinion on this tho, considering this install is about 4 years old, 
not to bad.  I've seen worse on a windoze rig shortly after a install.  ;-)

Thanks for any advice/info you can provide.  Let me know if you need 
more info too.

Dale

:-)  :-) 
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