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Date: Wed, 6 Aug 2003 20:05:52 +1000
From: Tim Robbins <tjr@FreeBSD.ORG>
To: Ruslan Ermilov <ru@freebsd.org>
Message-ID: <20030806100552.GA59205@dilbert.robbins.dropbear.id.au>
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cc: current@freebsd.org
Subject: Re: MSDOSFS woes
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On Sat, Aug 02, 2003 at 06:08:50PM +0300, Ruslan Ermilov wrote:

> Gang, :-)
> 
> While working with Marcel on a bootable CD-ROM for IA64 issue,
> I've stumbled upon the following problem.  I needed to increase
> the size of the EFI partition (which is an MS-DOS file system)
> to 64M, and that made two of my machines stuck solidly -- a lot
> of process are waiting on the "wdrain" event.

Interesting. Were you running with INVARIANTS on? I got a completely
reproducible kernel panic when running your script, regardless of whether I
used -F 12 or -F 16; it was trying to write file data past the end of the disk,
and causing kernel memory pool to become corrupted. I was seeing Memory
modified after free errors, with blocks most recently used by GEOM and file
desc.

Were you running the script with INVARIANTS on?


Tim