Subject: Re: Crash-resilience of FFS (w/softdeps)
To: Thor Lancelot Simon <tls@rek.tjls.com>
From: Frederick Bruckman <fredb@immanent.net>
List: netbsd-users
Date: 11/29/2001 22:06:15
On Thu, 29 Nov 2001, Thor Lancelot Simon wrote:

> > > On Thu, 29 Nov 2001, Frederick Bruckman wrote:
> > >
> > > > Yes, and there are several PR's open on it. For me, it was the
> > > > experience of moving some large directory trees around after
> > > > installing a new 60gb disk that finally convinced me to turn softdeps
> > > > off forever.

> I'm not convinced softdeps are nearly as buggy as some people seem to
> think they are.  I *am* convinced that they make you far, far more
> vulnerable to buggy hardware, e.g. IDE disks that claim to not have a
> cache, but actually (as your 60GB disk does) probably have several
> megabytes of it, and report writes complete when they hit the cache,
> not the disk.

Could be. (It's a Western-Digital, WD600BB-00BS.) Why should that
cause a panic, though? And no panic without softdeps?

Frederick