From mboxrd@z Thu Jan  1 00:00:00 1970
From: erik quanstrom <quanstro@quanstro.net>
To: YAMANASHI Takeshi <9.nashi@gmail.com>, 9fans@cse.psu.edu
References: <2ef8db43c822a2580c7bedfb69d78a86@orthanc.cc.titech.ac.jp>
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In-Reply-To: <2ef8db43c822a2580c7bedfb69d78a86@orthanc.cc.titech.ac.jp>
Subject: Re: [9fans] Venti Install
Message-Id: <20070326113916.F3DAA21EC6@medicine-bow.quanstro.net>
Date: Mon, 26 Mar 2007 07:39:16 -0400
Cc: 
Topicbox-Message-UUID: 31617720-ead2-11e9-9d60-3106f5b1d025

are you sure this is a DMA problem.  there are lots of 
places in the kernel that return Ebadctl.

pc/devether.c:266: 		error(Ebadctl);
pc/ethersink.c:31: 	error(Ebadctl);
pc/ethervgbe.c:1082: 		error(Ebadctl);
pc/sdata.c:2202: 			error(Ebadctl);
pc/sdata.c:2208: 			error(Ebadctl);
pc/sdata.c:2212: 			error(Ebadctl);
pc/sdata.c:2218: 			error(Ebadctl);
pc/sdata.c:2223: 			error(Ebadctl);
pc/sdata.c:2227: 				error(Ebadctl);
pc/sdata.c:2232: 			error(Ebadctl);
pc/sdata.c:2236: 			error(Ebadctl);
pc/sdata.c:2242: 			error(Ebadctl);
pc/sdata.c:2245: 		error(Ebadctl);
pc/sdmv50xx.c:1170: 	cmderror(cb, Ebadctl);
pc/wavelan.c:1120: 		error(Ebadctl);
port/devpnp.c:615: 			error(Ebadctl);
port/devpnp.c:623: 			error(Ebadctl);
port/devproc.c:1056: 			error(Ebadctl);
port/devproc.c:1357: 			error(Ebadctl);
port/devproc.c:1367: 			error(Ebadctl);
port/devproc.c:1372: 			error(Ebadctl);
port/devproc.c:1379: 			error(Ebadctl);
port/devsd.c:97: 				error(Ebadctl);
port/devsd.c:155: 		error(Ebadctl);
port/devsd.c:1230: 			error(Ebadctl);
port/devsd.c:1255: 			error(Ebadctl);
port/devsd.c:1258: 				error(Ebadctl);
port/devsd.c:1267: 				error(Ebadctl);
port/devsd.c:1273: 			error(Ebadctl);
port/devsegment.c:387: 			error(Ebadctl);
port/error.h:25: extern char Ebadctl[];		/* bad process or channel control request */
ppc/devether.c:256: 		error(Ebadctl);


YAMANASHI Takeshi <9.nashi@gmail.com> writes

| 
| Yeah.  DMA helps a lot on venti formatting.
| However, I saw this ominous message on my console when
| installing another tip9ug host on VMware ESX 3.0 Server
| which only supports Buslogic SCSI adaptor.
| 
| 	init: starting /bin/rc
| 	echo: write error: bad process or channel control request
| 	echo: write error: bad process or channel control request
| 
| I guess someone tried to turn DMA on for the SCSI drive and failed.