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Date:      Mon, 10 Jan 2000 15:54:38 -0800
From:      Alfred Perlstein <bright@wintelcom.net>
To:        Matthew Dillon <dillon@apollo.backplane.com>
Cc:        freebsd-current@FreeBSD.ORG
Subject:   Re: freezing...  update to 1.45 of ffs_softdep.c
Message-ID:  <20000110155438.H9397@fw.wintelcom.net>
In-Reply-To: <200001102249.OAA30876@apollo.backplane.com>; from dillon@apollo.backplane.com on Mon, Jan 10, 2000 at 02:49:10PM -0800
References:  <55926.947513027@critter.freebsd.dk> <200001101945.LAA29394@apollo.backplane.com> <200001102144.NAA30180@apollo.backplane.com> <20000110142338.G9397@fw.wintelcom.net> <200001102249.OAA30876@apollo.backplane.com>

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* Matthew Dillon <dillon@apollo.backplane.com> [000110 15:13] wrote:
> ::still a problem, just got snagged a few moments ago, there's a traceback
> ::already on the way. :)
> ::
> ::-Alfred
> :
> :    Is this backed by the ata driver too?
> :
> :    If so, if either you or Poul could backoff to the wd driver and see
> :    if the problem continues, I would appreciate it.
> 
>     I was able to reproduce it.  Never mind re: trying to use  
>     the 'wd' driver.  It occurs for me w/ SCSI.   It looks like
>     a softupdates problem for sure.

ugh, what fun this is, yes, i'm using vinum, softupdates, nfs and ata,
but da for the vinum backing.

I think i'm one of the bio bug posterboys.

Anyhow, it seems that the problem happens because somewhere softupdates
(or something else perhaps) LK_KERNPROCs the buffer and never lets go.

I've been trying to compile with DEBUG_LOCKS for nearly half an hour
but i'm having difficulty with vinum because i think it's intent on
giving me a hard time w/ matching itself and the kernel and the userland.

argh.. :)

-Alfred


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