[Ocfs2-users] Recommended block size for a mail environment

[Jerônimo Bezerra]

Hello All again,

no suggestions? No advices? I need some light!  Please!

Thanks again

Jerônimo


Luis Freitas escreveu:
>
>    Funny, I could not find a option to specify the number of inodes or 
> the inodes/bytes ratio on mkfs.ocfs2?
>
> Regards,
> Luis
>
>
> --- On *Tue, 7/22/08, jab at ufba.br /<jab at ufba.br>/* wrote:
>
>     From: jab at ufba.br <jab at ufba.br>
>     Subject: [Ocfs2-users] Recommended block size for a mail environment
>     To: ocfs2-users at oss.oracle.com
>     Date: Tuesday, July 22, 2008, 9:22 AM
>
>     Hello all,
>
>     I have a mail environment, with a situation seemed with a previous  
>     mail "Different size with du and ls". My environment is:
>
>     Debian Etch 4.0
>     Postfix 2.3.8-2
>     ocfs2-tools 1.2.1-1.3
>     kernel 2.6.18-4-amd64
>
>     My "df -h" shows me the follow:
>
>     df -Th
>     /dev/sdb1    ocfs2    1,0T  894G  131G  88%
>      /mails
>
>     df -Thi
>     File Syst.   Type      Inodes   IUsed IFree IUse% Mount on
>     /dev/sdb1    ocfs2       16M     14M    2,1M   88% /mails
>
>     but when I do a "du -sh . /mails" it shows me 480GB, so much
>     different  
>     from 849G. The OCFS2 block size is 4K. I made a script to average the  
>     medium mail size, and it's the follow:
>
>     0k to 1k - 8%
>     0k to 2k - 13%
>     0k to 3k - 22%
>     0k to 4k - 35%
>     4.1k to 6k - 15%
>     6.1 to 8k - 10%
>     8.1k to 10k - 9%
>     10.1k to 12k - 7%
>     rest - 24%
>
>     My debug.ocfs2 doesn't has the "-R" option:
>
>     # debugfs.ocfs2 -R "stats" /dev/sdb1
>     debugfs.ocfs2: invalid option -- R
>     debugfs.ocfs2 1.2.1
>
>
>     My doubts are:
>
>     4k is a good block size for this situation?
>     How to avoid waste space as now (~50%)?
>     If I choose to use 2k, will the available Inodes double (16M to 32M)?
>
>     Thanks a
>      lot!
>
>     Jeronimo
>
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