Re: Removing softdep

[James Chacon <jmc%netbsd.org@localhost>]

On Jun 7, 2008, at 12:01 PM, Jukka Marin wrote:

> On Sat, Jun 07, 2008 at 01:11:42PM -0400, Greg A. Woods; Planix,  
> Inc. wrote:
> > > Data integrity sounds great, but data integrity without performance
> > > is..
> >
> > You've got that backwards in a major way.
> >
> > Performance without data integrity is totally useless.  You may as
> > well turn off your computers and go back to pen and paper.
>
> Heh.  Well, I do care for my data (RAID6 and multiple backup  
> schemes), but
> I have never lost any data because of softdeps, so I don't consider  
> it a
> big risk in my case.

You've clearly never had a crash/outage during the middle of a large  
build or something accessing a lot of files.

I've had times I had to fsck, it fills /lost+found, clear that out and  
repeat multiple times before things came back...

James

> Without decent performance, I could go back to pen and paper as well.
>
> I thought softdeps were helping reads as well, but maybe I was wrong.
> In that case, journalling sounds great.
>
>  -jm