Date: Fri, 23 Jul 2010 11:42:10 +0930 From: "Daniel O'Connor" <doconnor@gsoft.com.au> To: Volodymyr Kostyrko <c.kworr@gmail.com> Cc: freebsd-stable@freebsd.org Subject: Re: Using GTP and glabel for ZFS arrays Message-ID: <297025B9-5F9C-4DFD-9C1D-31CA4E059119@gsoft.com.au> In-Reply-To: <i29nuv$jdt$1@dough.gmane.org> References: <4C47B57F.5020309@langille.org> <i29nuv$jdt$1@dough.gmane.org>
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On 23/07/2010, at 24:56, Volodymyr Kostyrko wrote: > 22.07.2010 06:05, Dan Langille wrote: >> Create a new partition within that scheme: >>=20 >> gpart add -b 34 -s SOMEVALUE -t freebsd-zfs ad0 >>=20 >> Why '-b 34'? Randi pointed me to >> http://en.wikipedia.org/wiki/GUID_Partition_Table where it explains = what >> the first 33 LBA are used for. It's not for us to use here. >=20 > gpart is not so dumb to not protect this space. If you don't specify = -b when creating first partition it automagically defaults to 34. Maybe it should default to 40 to get 4k alignment..? (Probably a POLA/legacy issue there) -- Daniel O'Connor software and network engineer for Genesis Software - http://www.gsoft.com.au "The nice thing about standards is that there are so many of them to choose from." -- Andrew Tanenbaum GPG Fingerprint - 5596 B766 97C0 0E94 4347 295E E593 DC20 7B3F CE8C
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