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Date:      Sun, 3 Dec 1995 16:11:58 -0700 (MST)
From:      Terry Lambert <>
To: (Stephen Waits)
Subject:   Re: Inodes for news server
Message-ID:  <>
In-Reply-To: <Pine.SOL.3.91.951203103852.22034B-100000@moon> from "Stephen Waits" at Dec 3, 95 10:40:35 am

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> Does FreeBSD support multiple-drive volumes??  I was under the (perhaps 
> incorrect) assumption that this 'striping' support still did not exist in 
> FreeBSD.  AIX has a nice implementation of this exact feature.  I've 
> glued together two 4.5 Gig drives into one "logical volume" upon which I 
> can create several partitions, etc..

This is one of several types of volume spanning.

AIX does this at the JFS level.  It's hard to increase the size of
a superblock in UFS without the world going to hell.  You'd need a
tool for it and there isn't one at this time.

Other types of volume spanning include:

1)	Device "concatenation" -- what the NetBSD cdd driver does;
	it could be ported to FreeBSD easily.

2)	RAID.

3)	Inferior mounts (UNIX uses this last one by default).

					Terry Lambert
Any opinions in this posting are my own and not those of my present
or previous employers.

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