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Date:      Wed, 28 Jan 1998 15:29:48 +1030
From:      Greg Lehey <grog@lemis.com>
To:        Chris Sagar <CSagar@exchange.iterated.com>
Cc:        "'freebsd-fs@freebsd.org'" <freebsd-fs@FreeBSD.ORG>
Subject:   Re: ccd problems still
Message-ID:  <19980128152948.51356@lemis.com>
In-Reply-To: <B127D055F876D111981F00C04FD5D32C025EB3@exchange.iterated.com>; from Chris Sagar on Tue, Jan 27, 1998 at 11:26:19PM -0500
References:  <B127D055F876D111981F00C04FD5D32C025EB3@exchange.iterated.com>

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On Tue, Jan 27, 1998 at 11:26:19PM -0500, Chris Sagar wrote:
> Is there anyone who is running CCD devices successfully?

I have done so, and I know others.

> I have just spent 8 hrs loading data from disks to the ccd devices I
> built and tested. As soon as I got the 15 GB of data loaded, I sync-ed
> the system and rebooted. Lo and behold the ccd device would not come up.
> I run fsck on it and it tells me bad super block, values disagree with
> those in first alternate. I give it an alternate superblock number (32)
> to fsck from, and tells me bad super block, magic number wrong.  I just
> can't do another newfs on it to find the other super block numbers.

I would guess that you've screwed up the configuration file somewhere
along the way.  You *are* talking to /dev/ccd? and not the component
disks, aren't you?

> All you guys that have responded have been a great help, but I just
> don't get any confidence in this system.

I'm not overly impressed with the resilience of CCD either, if it
makes you any happer.  But it does work.

> I have also, in the last 24 hours, had the system lose the device files
> for my /var /usr, and / file systems. Any ideas.

No.

> What is wrong with this disk system. I am about to trash it and go with
> NT.

It's difficult to tell if you don't give any details.  What kind of
CCD are you building?  What version of FreeBSD are you running?  What
happens if you do a newfs, copy a couple of files to it, and then
reboot?

> I believe I could have had an NT server up and running in half the time
> a 1/10 the frustration of fooling with this ccd system.

With CCD?  Of course, you'd also get 1/10th the performance, with or
without CCD.

> Pardon the venting, but I have been working on this system now for
> almost 18 hrs today, and I am now at start-over.

My sympathies.  But you'll get more help if you give a few more
details.

Greg



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