Subject: Re: softdep-related panic two days in a row, 2.0_BETA/i386
To: Jeff Rizzo <>
From: Thomas Klausner <>
List: current-users
Date: 07/13/2004 23:39:39
On Tue, Jul 13, 2004 at 10:08:21AM -0700, Jeff Rizzo wrote:
> After a number of months running smoothly (in relation to softdeps, anyway),
> I just got a softdep-related panic for the second day in a row with
> a similar workload on the machine (./ for -current with -j4).
> The only thing particularly different from GENERIC.MP about the
> kernel I'm running is that NEW_BUFQ_STRATEGY is enabled.

I was just going to mail current-users about this myself, since I have
the same problem with a 2.0G from July 5, but UP and NEW_BUFQ_STRATEGY
_not_ enabled. I use FFSv2 file systems, which are all softdeps-enabled,
in case it matters.

The backtrace looks the same, once it started with:
panic: allocdirect_merge ob 0 != 407264 || lbn 1 >= 12 || osize 0 != nsize 16384
and once with
panic: allocdirect_merge ob 0 != 448416 || lbn 1 >= 12 || osize 0 != nsize 16384

The rest is identical.

At the time the machine was doing a ./ without -j
and handling consistent network-to-disk traffic of ~100KB/s.

Ideas and patches :) very welcome...