Date: Sun, 18 Jan 1998 14:25:12 +1030 From: Greg Lehey <grog@lemis.com> To: Greg Pavelcak <gp@tower.my.domain> Cc: freebsd-questions@FreeBSD.ORG Subject: Re: ccd Message-ID: <19980118142512.62444@lemis.com> In-Reply-To: <XFMail.980117214323.gp@tower.my.domain>; from Greg Pavelcak on Sat, Jan 17, 1998 at 09:43:23PM -0500 References: <19980118105549.55824@lemis.com> <XFMail.980117214323.gp@tower.my.domain>
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On Sat, Jan 17, 1998 at 09:43:23PM -0500, Greg Pavelcak wrote: > > On 18-Jan-98 Greg Lehey wrote: >> On Sat, Jan 17, 1998 at 08:48:06AM -0500, Greg Pavelcak wrote: >>> I'm running short on hard disk space, and I'm thinking about getting >>> a >>> new drive to add to my setup. That leads me to a few ccd questions. >>> I >>> hope this isn't a repost. I've been getting my lists now for over >>> two >>> days and haven't seen it show up. >>> >>> 1. Any advice on what to read on ccd. I read man ccd, man ccdconfig, >>> and the diskformat tutorial. They seem to be more for the person who >>> understands what ccd is but doesn't know how to make it happen on >>> FreeBSD. >> >> Yes, the CCD man pages are not the best documentation available. >> Unfortunately, I don't know anything better. >> >>> 2. Can you ccd IDE devices, >> >> Yes. >> >>> 3. Can you do ccdconfig at any time. That is, it seems like >>> something >>> one would want to do early on, perhaps at the beginning of the >>> installation process, and then make file systems on ccd. >> > > >> I don't think you could have a CCD root file system: there's a chicken >> and egg problem inherent in this, since the boot doesn't understand >> CCD. I also strongly suspect that you wouldn't be able to start the >> CCD system before installation, though I could be wrong about that. >> If I were doing this now, I would probably install normally (if >> necessary), back up the non-root file systems, reboot in single-user >> mode, repartition and create file systems for CCD, and then restore >> the data.^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ > > Thanks for the reply, but I'm afraid you lost me there. Would I just do > ccdconfig and then create file systems using sysinstall. When you say > create for ccd, does that mean that the partition editor will show the > disk as a single device /dev/ccd0? OK. Let's look at how CCD works. It creates pseudo-device such as /dev/ccd0, which look like normal disk slices to the software which accesses them. To use such a device as a file system, you first need to run newfs on it just like you would on a normal disk slice. > Sorry to be a bother, but I'd appreciate any more help anyone can > provide. I would just try these things, but I don't have the matching > disk yet. Nor do I have a good backup method (I'll tar to a bunch of > zip disks) So I want to be pretty confident about what I'm doing before > I fool with file systems. First get a good backup method. Any other way you're going to end up shooting yourself in the foot. Greg
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