Date: Wed, 29 Jan 2003 17:58:56 -0500 From: David Gilbert <dgilbert@velocet.ca> To: "Matthew N. Dodd" <winter@jurai.net> Cc: David Gilbert <dgilbert@velocet.ca>, freebsd-hackers@FreeBSD.ORG Subject: Re: Network block device. Message-ID: <15928.23728.549120.559276@canoe.velocet.net> In-Reply-To: <20030129173416.U8642@sasami.jurai.net> References: <15928.6900.948346.474717@canoe.velocet.net> <20030129170512.Y8642@sasami.jurai.net> <15928.21248.483298.203713@canoe.velocet.net> <20030129171908.G8642@sasami.jurai.net> <15928.21992.586804.141143@canoe.velocet.net> <20030129173416.U8642@sasami.jurai.net>
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>>>>> "Matthew" == Matthew N Dodd <winter@jurai.net> writes: Matthew> On Wed, 29 Jan 2003, David Gilbert wrote: >> As I understand, NBD is just a little driver that lets you mount >> foo:/dev/ad0s1g over the network and proxies the block transactions >> across. Matthew> Right, you still have to stripe/mirror on the client side Matthew> though. I don't think it will be all that bad. Matthew> Any chance of you testing Linux NBD and FreeBSD Matthew> NFS/vnconfig/CCD? it doesn't work that way. the result of NBD is a /dev/nbd0 not a filesystem. Block 0 of /dev/nbd0 is block 0 of /dev/hda1 (say). nbd runs as a server on the node with the disk and as a client on the node using the disk. Yes, you still stripe on the client side... but you stripe across directly mapped block devices (no NFS involved). Dave. -- ============================================================================ |David Gilbert, Velocet Communications. | Two things can only be | |Mail: dgilbert@velocet.net | equal if and only if they | |http://daveg.ca | are precisely opposite. | =========================================================GLO================ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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