[Dovecot] Multiple maildirs

[Timo Sirainen]

On Oct 16, 2008, at 6:12 PM, Charles Marcus wrote:

>> Probably compiled with 32bit off_t, which prevents opening files  
>> >2GB.
>> Compiling with 64bit off_t should be pretty easy with Linux, but I  
>> don't
>> know if Postfix can be configured to do that without modifying  
>> Makefile
>> manually (-D_FILE_OFFSET_BITS=64).
>
> Ah, thanks for the correction/explanation...
>
> I guess then that this is essentially a 32-bit filesystem limitation?

No.

> Or
> are you saying that you could still compile postfix like this even  
> on a
> 32 bit system?

Yes. The problem is that you need to be able to seek in files, so you  
have this off_t type for storing the file offset. Normally it's signed  
32bit in 32bit systems, so the file sizes are limited to 2 GB. But  
Linux and Solaris at least support easily recompiling with 64bit off_t.

> I'm also guessing that postfix running on a 64 bit system would  
> normally
> be compiled this way...?

With 64bit systems off_t is always 64bit.

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