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Path: euryale.cc.adfa.oz.au!newshost.carno.net.au!harbinger.cc.monash.edu.au!munnari.OZ.AU!news.ecn.uoknor.edu!feed1.news.erols.com!cpk-news-hub1.bbnplanet.com!cam-news-hub1.bbnplanet.com!news.bbnplanet.com!uunet!in3.uu.net!199.232.136.71!venus.os.com!news.os.com!craigs From: craigs@os.com (Craig Shrimpton) Newsgroups: comp.unix.bsd.freebsd.misc Subject: Need a little help with ccd mirroring Date: Sun, 23 Mar 1997 00:39:20 -0500 Organization: Orbit Systems Lines: 36 Message-ID: <craigs-ya02408000R2303970039200001@news.os.com> NNTP-Posting-Host: titan.os.com Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 8bit X-Newsreader: Yet Another NewsWatcher 2.4.0 Xref: euryale.cc.adfa.oz.au comp.unix.bsd.freebsd.misc:37574 Folks, I've been using the ccd driver in RAID 0 mode on my news machine for months now and it works great. I want to set up my mail server with mirrored disks but I have a couple of questions on how to do this and what to expect if a failure occurs. First: When mirroring, what should the interleave be set to? Zero or something else? Second: What's the newfs procedure for a mirroring setup? Do you ccdconfig, disklabel and newfs like a normal ccd setup? Third: If a disk goes bad, what's the recovery procedure? The readme says you can re-configure the driver to use only one disk without mirroring until you can install a new one. What's the ccd.conf entry for that? Finally: Is "dd if=/dev/survivor of=/dev/freshmeat bs=1M" still the proper way to recover the disk? Also, do I simply "dd" to a raw disk and re-ccdconfig? Seems too simple to be true. Thanks, Craig -- Orbit Data Systems, Inc. Craig Shrimpton 400 Grove Street 508-753-8776 Worcester, MA 01605 http://www.os.com/