Bruce Momjian wrote:
>
> Checking application/pgp-signature: FAILURE
> -- Start of PGP signed section.
> > Hi -
> >
> > pgman wrote:
> >
> > : Most Unix filesystems will not allocate disk blocks until you write in
> > : them. [...]
> >
> > Yes, I understand that, but how is it a problem for postgresql?
>
> Uh, I thought we did that so we were not allocating file system blocks
> during WAL writes. Performance is bad when we do that.
Performance isn't the question. The problem is when you get a
"disk full" just in the middle of the need to write important
WAL information. While preallocation of a new WAL file, it's
OK and controlled, but there are more delicate portions of
the code.
Jan
--
#======================================================================#
# It's easier to get forgiveness for being wrong than for being right. #
# Let's break this rule - forgive me. #
#================================================== [EMAIL PROTECTED] #
_________________________________________________________
Do You Yahoo!?
Get your free @yahoo.com address at http://mail.yahoo.com
---------------------------(end of broadcast)---------------------------
TIP 1: subscribe and unsubscribe commands go to [EMAIL PROTECTED]
