Roberto Mello <rmello(at)cc(dot)usu(dot)edu> writes:
> What is the word about using PG with journaled file systems? I have heard
> that it's best to not have the PG journal in a journaled system to avoid
> double journaling.
Journaling metadata is good. Journaling file contents is redundant ---
turn that off if you can. (Of course, if there is anything other than
Postgres files on the same device, you may not want to turn off contents
journalling...)
regards, tom lane