Ext3 users - Aug 2001 - Howto create hidden journal on / fs

Hi, I installed RH 7.1/e2fsprogs 1.22 and util-linux 2.11f on a box
with a 3ware 6200 and 2 20GB IDE drives and then installed 2.4.7 and
ext3 0.9.5

I unmounted all the filesystems except / and did a tune2fs -i 0 -c 0
-j <device> on all the remaining filesystems

This created a journal with a hidden file. 
>From what I recollect, doing a tune2fs on a mounted fs creates
.journal file. I couldn't figure out how to unmount / and then create
a hidden journal (how does one reach tune2fs then ). Is it possible 

Does it make any difference whether one has a .journal or not ?

Also, what journalling mode is appropiate for a database server such
as mysql/postgres ?

-- 
Yusuf Goolamabbas
yusufg@outblaze.com

Hi,

On Fri, Aug 03, 2001 at 05:29:29AM -0000, Yusuf Goolamabbas wrote:
> >From what I recollect, doing a tune2fs on a mounted fs creates
> .journal file. I couldn't figure out how to unmount / and then create
> a hidden journal (how does one reach tune2fs then ). Is it possible 
Not right now, no.
> Does it make any difference whether one has a .journal or not ?
Basically none at all.
> Also, what journalling mode is appropiate for a database server such
> as mysql/postgres ?
Probably ordered mode.  I haven't tried that combination myself yet.
Writeback mode may well do just fine if you're happy with its more
relaxed semantics.

Cheers,
 Stephen