[Ocfs2-users] OCFS2 on email storage

[Thomas G. Lau]

Dear Sérgio,

does the sub-dir limit come from OCFS2?




Sérgio Surkamp wrote:
> Em Wed, 12 Aug 2009 15:05:44 +0800
> "Thomas G. Lau" <thomas.lau at ntt.com.hk> escreveu:
>
>   
>> Dear all,
>>
>> Anyone using OCFS2 on email storage system ? (postfix/qmail).
>> Wondering if any of you suffer any problem?! Also, what parameter did
>> you tune for email system only? thanks.
>>
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>> Ocfs2-users at oss.oracle.com
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>>     
>
> Hello Thomas,
>
> We are using as general propose shared filesystem (email, shared files,
> some web related files, etc...) and the only drawback from a local
> filesystem is that it's a bit slower due to cluster stack.
>
> About the tuning we have reduced the block size and pre-allocated size
> to reduce the on-disk size, since email messages usually are tiny files
> (lets say about 8K per message).
>
> Our setup:
>
> mkfs.ocfs2 -b 4096 -C 4096 -N 4 /dev/sd<X>
>
> If you plan to use it for a large number of accounts, keep your eye on
> the 32000 sub-directories limitation.
>
> Regards,
>   
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