Date: Tue, 7 Mar 2006 09:04:02 -0800 (PST) From: "Freddie Cash" <fcash@ocis.net> To: stable@freebsd.org Subject: Re: Fresh install on gmirror'ed disks? Message-ID: <54559.192.168.0.10.1141751042.squirrel@webmail.sd73.bc.ca> In-Reply-To: <200603070939.30032.joao@matik.com.br> References: <440D74B3.3030309@vwsoft.com> <200603070939.30032.joao@matik.com.br>
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On Tue, March 7, 2006 4:39 am, JoaoBR wrote: > On Tuesday 07 March 2006 08:55, Volker wrote: >> I do agree that gmirror is not that bad and not that difficult. But >> take a look at how to setup a fresh system using gmirror (slice by >> slice mirroring): >> >> - install a complete system to a fresh disc >> - create the (well sized) slices on a 2nd disc (not that easy) >> - create the gmirror set on disc 2 >> - bring gmirror up >> - copy all filesystems over to the gmirror set >> - reboot >> - create exactly sized slices on disc 1 >> - insert everything into the gmirror set >> >> Using that procedure you're going to copy each installed file three >> times (install, copy to mirror, sync mirror). That's a waste of >> time compared to a solution where the installer would be able to >> install directly into a mirror. There's no need to copy files around. gmirror handles it all for you behind the scenes. Just create the gmirror labels using the existing disks/slices/partitions, then insert the second set of disks/slices/parittions. gmirror will handle synchonising the data across the mirror. >> When using disc based gmirror (instead of per slice gmirror) the >> procedure is a bit easier, but similar. > there is no need to copy anything around ... > - you do install the system as usual > - before rebooting you create the to be mirrored disk with the gmirror > label command (you do not loose data here) > - then you change your fstab acordingly > - you reboot > - you insert the mirror disk(s) > - gmirror should start syncing automatically if you did everything > right > realy, this is a 3 minute thing This is the process I just went through. It would be nice if there was a post-install step that did this automatically, but it wasn't all that hard to do manually. Just CTRL+F4 to open the terminal, run a few commands to create the mirror, edit /etc/fstab, and exit the installer. Dru Lavigne's OnLamp article about this makes it almost trivial to do. ---- Freddie Cash fcash@ocis.net
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