[geeks] Big Damn File System....

[Gregory Leblanc]

> -----Original Message-----
> From: David Cantrell [mailto:david at cantrell.org.uk]
> 
> On Fri, Jun 22, 2001 at 02:56:58PM -0500, ward at zilla.nu wrote:
> > On Fri, Jun 22, 2001 at 08:26:07PM +0100, David Cantrell wrote:
> > 
> > > There is.  You want the Multiple Devices driver, aka md.  
> Sufficiently
> > > reliable that I've used it ont production boxen.
> > 
> > I'd agree that it's reliable, just don't use a journalling 
> fs with it
> > and kernel 2.2.x.
> 
> Oh?  AFAIK, one of the other admins had it working just fine 
> with 2.2 and
> reiserfs.  Is the issue one of instability/corruption, or 
> inefficiency?

It's not kosher on 2.2, because of a corruption issue.  It'll never get
fixed on 2.2, or at least that's what Alan tells me.  I think the journaling
fs issue is similar to the issue with swap on software RAID devices, in that
it's only dangerous while the RAID is resyncing.  I could be wrong.

> >                    Have they fixed the raid checking 
> problem at startup?
> > Last I used md, it wanted to do a full raid check at every 
> boot, and the
> > 'solution' was a kludged workaround.
> 
> Last time I set one of these up, you still needed to be 'orrible and
> kludgy, but that was almost a year ago.

I'm not sure what you're referring to.  It does seem to rebuild the mirror
when the system gets hard power cycles, but I haven't had any problems when
we shut the machine down.  Can you point me to some archives or something on
this one?
	Greg