On Thu, Nov 08, 2001 at 06:14:53PM +0100, Brad Knowles wrote:
> At 12:36 PM +0100 11/8/01, Manuel Bouyer wrote:
> 
> >>  	But you do have to unmount and remount the filesystem.  Since
> >>  tunefs only works on unmounted (or read-only) filesystems, I don't
> >>  see any practical difference here.
> >
> >  Exept that I have to rerun tunefs to turn it off.
> 
> 	With your methods, unless there is a crash you have to re-run 
> mount to turn off soft updates, so again, I don't see any practical 
> difference here.

only mount, not mount + tunefs

> 
> >  This is what I want. Especially if the machine crashes and reboot, I want
> >  it to reboot with soft updates turned off.
> 
> 	Why?  If the system crashed with soft updates turned on, 
> there are going to be certain types of soft updates cruft lying 
> around in the filesystem, and fsck is going to have to fix those 
> problems (although with more advanced implementations of soft 

And it can, as this info is stored in the superblock.