Hello,

I was wondering if there is a way to pre-allocate tablespace on disk before 
adding data and indexes.
My understanding is:
PG writes data into files sequentially. If more space is needed, disk space is 
requested from the OS and if there is space, the OS will give PG a file system 
block and PG will write data/indexes until that block is full and so on.
Other database that I have worked with before and that I'm still working with, 
allow you to pre-allocate disk space so you get huge chunks of contiguous space 
at one, which has major impacts on database performance.

Can this be done with PG at all? If not, is this planned for any time in the 
future?

best regards,
chris
-- 
chris ruprecht
database grunt and bit pusher extraordinaíre 


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