*BSD News Article 48869


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From: Jason Thorpe <thorpej@nas.nasa.gov>
Newsgroups: comp.unix.bsd.netbsd.announce
Subject: New version of the `ccd'
Followup-To: poster
Date: 17 Aug 1995 15:29:35 -0700
Organization: University of California, Berkeley
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Message-ID: <199508171833.LAA12201@lestat.nas.nasa.gov.POST>
Reply-To: Jason Thorpe <thorpej@nas.nasa.gov>
NNTP-Posting-Host: agate.berkeley.edu

I've just checked in a new version of the `ccd' (concatenated disk 
driver).  This new version works (or should work) with all ports that can 
talk to disks.  It has been tested on the i386, hp300, and sparc.

Notables:
		* Not restricted to config.old ports.

		* 8-component limit is gone.

		* Run-time dynamic configuration and unconfiguration
		  with a simple utility.  No more need to re-compile
		  the kernel to add or remove components, or change
		  the interleave factor.

		* Supports disklabels.

		* Lots of internal changes.  See code for more 
		  information.  :-)

Make sure to read the ccdconfig(8) and ccd(4) manual pages for details on 
how to configure a ccd.  If you're currently using a ccd (presumably on 
an hp300), note that the ccd line in your kernel configuration file has 
to change.

For those interested, I'll be posting a performance analysis of a fairly 
large ccd (hopefully) within the next month.

Thanx everybody who suggested changes and helped test this code.

--------------------------------------------------------------------------
Jason R. Thorpe                                       thorpej@nas.nasa.gov
NASA Ames Research Center                               Home: 408.866.1912
NAS: M/S 258-6                                          Work: 415.604.0935
Moffett Field, CA 94035                                Pager: 415.428.6939