Date: Wed, 25 Nov 1998 11:54:24 +0300 From: Anand Buddhdev <arb@anand.org> To: freebsd-questions@FreeBSD.ORG Subject: help: ccd and mirroring Message-ID: <19981125115424.A19871@iconnect.co.ke>
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I've tried desperately to understand CCD for disk mirroring, but now i'm stuck: The system is FreeBSD-2.2.5 release, with 2 identical 4 GB IDE disks on disk controller wdc0. I installed the OS on the first disk wd0. The partitions are: 50 MB / 64 MB swap 3998 MB /usr I initially tried to use vinum, but it fails to compile with the error: "Don't know how to make statetexts.h". I really need to get this working, so I've put vinum aside for now. I have: 1. Recompiled a kernel with CCD support pseudo-device ccd 4 2. cd /dev; ./MAKEDEV ccd0 3. Formatted the second disk wd1, and dedicated the entire disk for FreeBSD. I created partitions on it identical to wd0. 4. Now I want to enable the mirroring, but this is where I'm stuck. what I have tried to do in single-user mode is: 1. Create a /etc/ccd.conf file ccd0 16 CCDF_MIRROR,CCDF_UNIFORM /dev/wd0 /dev/wd1 2. Tried to run ccdconfig -C. This runs, and does not give and errors. So then I try to mount the ccd0 mount /dev/ccd0 /mnt This fails with an error message: "Bad superblock". I don't understand now what is happening here. I would really appreciate some help on this, since I need to get this system going ASAP. It is running on its single disk for now, but the mirroring is essential. TIA. -- Anand To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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