On 5/30/13 7:13 AM, Andres Freund wrote: > Why? The spec doesn't specify that case and that very well allows other > behaviour. Glibc sure does behave sensibly and zeroes the data > (sysdeps/posix/posix_fallocate64.c for the generic implementation) and > so does linux' fallocate() syscall, but that doesn't say much about > other implementations.
glibc actually only writes one byte to every file system block, to make sure the block is allocated. It doesn't actually zero every byte. -- Sent via pgsql-hackers mailing list (email@example.com) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers