gmirror problems

[Pawel Jakub Dawidek]

On Fri, Nov 12, 2004 at 07:04:21PM +0000, Robin Breathe wrote:
+> Pawel Jakub Dawidek wrote:
+> >Unfortunately, gmirror and other GEOM classes are not supported by our
+> >installer.
+> >
+> >The safest way to do what you want is to:
+> >
+> >	# gmirror label <name> ad1
+> >	create slices and partitions on /dev/mirror/<name>
+> >	create file system
+> >	copy data from ad0 to <name>
+> >	change /etc/fstab to boot from /dev/mirror/<name>s1a or something
+> >	reboot
+> >	# gmirror insert <name> ad0
+> 
+> Are any nasty side-effects likely from slicing and newfs-ing ad1 prior 
+> to labelling the mirror? For example, could the gmirror metadata get 
+> overwritten at some later stage by writing to the end of the last slice?

In theory it is possible, yes, but I doubt you can see it in practise.
You can also see some complains that slices are too big, because gmirror
cuts the last sectors from the component provider.

-- 
Pawel Jakub Dawidek                       http://www.FreeBSD.org
pjd at FreeBSD.org                           http://garage.freebsd.pl
FreeBSD committer                         Am I Evil? Yes, I Am!
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