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Date: Wed, 22 Oct 2008 15:31:01 +0200 (CEST)
From: Wojciech Puchar <wojtek@wojtek.tensor.gdynia.pl>
To: Carl <k0802647@telus.net>
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Cc: freebsd-questions@freebsd.org
Subject: re: Setting up gmirror
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>>>     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?

no. it means for example with -s 65536 and 1MB request - it will split 
this request on 2 disks