From owner-freebsd-hackers Wed Sep 25 17:12:26 2002 Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.FreeBSD.org (mx1.FreeBSD.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 1B2D837B401 for ; Wed, 25 Sep 2002 17:12:25 -0700 (PDT) Received: from genius.tao.org.uk (genius.tao.org.uk [212.135.162.51]) by mx1.FreeBSD.org (Postfix) with ESMTP id 4DC9543E42 for ; Wed, 25 Sep 2002 17:12:24 -0700 (PDT) (envelope-from joe@genius.tao.org.uk) Received: by genius.tao.org.uk (Postfix, from userid 100) id 5B036436B; Wed, 25 Sep 2002 21:39:30 +0100 (BST) Date: Wed, 25 Sep 2002 21:39:30 +0100 From: Josef Karthauser To: Julian Elischer Cc: Mark Santcroos , freebsd-hackers@FreeBSD.ORG Subject: Re: vmware reads disk on non-sector boundary Message-ID: <20020925203930.GB25571@genius.tao.org.uk> Mail-Followup-To: Josef Karthauser , Julian Elischer , Mark Santcroos , freebsd-hackers@FreeBSD.ORG References: <20020925173453.GA1347@laptop.6bone.nl> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.1i Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG On Wed, Sep 25, 2002 at 11:29:12AM -0700, Julian Elischer wrote: > vmware used the blocking ("b" devices) interface to disks that do > blocking for you. > > Some well meaning but misguided individuals removed block devices > without providing an alernate way of doing this. It should be possible > to do the equivalent of a vn device that accepts misalligned > accesses and reblocks them, but I'll leave that to those whose > job it is to finish. I thought that we hacked around this in the linuxulator 18 months ago by transparently converting block calls into character calls behind the scenes. Either this has been removed or something else is wrong. Joe -- "As far as the laws of mathematics refer to reality, they are not certain; and as far as they are certain, they do not refer to reality." - Albert Einstein, 1921 To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message