Date: Sun, 21 Jan 1996 12:27:13 -0600 (CST) From: Joe Greco <jgreco@brasil.moneng.mei.com> To: tom@uniserve.com (Tom Samplonius) Cc: jgreco@brasil.moneng.mei.com, hackers@freebsd.org, stable@freebsd.org Subject: Re: ccd driver or 2.1R available Message-ID: <199601211827.MAA26034@brasil.moneng.mei.com> In-Reply-To: <Pine.BSF.3.91.960119142201.2575C-100000@haven.uniserve.com> from "Tom Samplonius" at Jan 19, 96 02:25:01 pm
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> As far as I can tell from the manpage, the reason is that the ccd
> disklabel could be mistaken by the system as the disk's label, because
> they are in the same spot. The first bit of every partition has space
> reserved for the label, but ccd will not reserve space.
>
> I believe swap will not work as the first partition on a disk for the
> same reason, except that swap will overwrite the label!
Well, I left the first cylinder empty and I've been running for 22 hours now
having striped two disks for a new alt.binaries partition on news.sol.net.
My only "gotcha" was that ccd insists on the component partitions being of
type "4.2BSD" which I wasn't quite expecting. It might be better to have a
different partition type ("CCD"?) to avoid confusion. The error message
given by ccdcontrol was hideously vague, of course it only took a minute or
two to go grepping for the errno in the driver and inspect the relevant
code, and then it made sense.
Anyways, we have ways to exercise the code :-) and it appears to be
working just great! I have a six-drive array that's just begging for ccd.
Somebody please fold this into -current! It's exactly what we need...
nifty things like this are great selling points for FreeBSD.
... Joe
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Joe Greco - Systems Administrator jgreco@ns.sol.net
Solaria Public Access UNIX - Milwaukee, WI 414/342-4847
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