Date: Tue, 21 Oct 2008 17:15:25 -0700 From: Carl <k0802647@telus.net> To: freebsd-questions@freebsd.org, wojtek@wojtek.tensor.gdynia.pl Subject: re: Setting up gmirror Message-ID: <48FE709D.9080907@telus.net>
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Wojciech Puchar wrote: > Andrew Falanga wrote: >> Identical drive models so their sizes are the same. Is this the >> command, from gmirror(8), the one I'll want to use? >> >> Create a mirror on disk with valid data (note that the last sector of the >> disk will be overwritten). Add another disk to this mirror, so it will >> be synchronized with existing disk: >> >> gmirror label -v -b round-robin data da0 > > add -s <very large value> like -s 1048576 to prevent splitting one request > on 2 disks. I thought the -s option was only applicable when using "-b split" for the balancing algorithm. Does "round-robin" not mean simply alternating between the two disks without ever splitting requests? What are the considerations in choosing between "load", "prefer", "round-robin", and "split" balance algorithms? Carl / K0802647
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