Date: Thu, 22 Jul 2010 04:51:11 -0400 (EDT) From: Charles Sprickman <spork@bway.net> To: Boris Samorodov <bsam@ipt.ru> Cc: freebsd-stable@freebsd.org, Dan Langille <dan@langille.org> Subject: Re: Using GTP and glabel for ZFS arrays Message-ID: <alpine.OSX.2.00.1007220448070.33454@hotlap.local> In-Reply-To: <52881603@ipt.ru> References: <4C47B57F.5020309@langille.org> <4C47B7DD.3070604@langille.org> <52881603@ipt.ru>
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On Thu, 22 Jul 2010, Boris Samorodov wrote: > On Wed, 21 Jul 2010 23:15:41 -0400 Dan Langille wrote: >> On 7/21/2010 11:05 PM, Dan Langille wrote (something close to this): > >>> First, create a new GUID Partition Table partition scheme on the HDD: >>> gpart create -s GPT ad0 >>> >>> Let's see how much space we have. This output will be used to determine >>> SOMEVALUE in the next command. >>> >>> gpart show >>> >>> Create a new partition within that scheme: >>> gpart add -b 34 -s SOMEVALUE -t freebsd-zfs ad0 >>> >>> Now, label the thing: >>> glabel label -v disk00 /dev/ad0 > > That command will destroy secondary GPT. I was just reading about GUID partitioning last night and saw that one of the benefits is that there's a copy of the partition table kept at the end of the disk. That seems like a pretty neat feature. Do you by any chance have a reference I can point to (I was documenting stuff about GPT in an internal wiki and this is a nice piece of info to have)? Also, how does one access/use the "backup" partition table? Thanks, Charles >> Or, is this more appropriate? >> glabel label -v disk00 /dev/ad0s1 > > -- > WBR, Boris Samorodov (bsam) > Research Engineer, http://www.ipt.ru Telephone & Internet SP > FreeBSD Committer, http://www.FreeBSD.org The Power To Serve > _______________________________________________ > freebsd-stable@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-stable > To unsubscribe, send any mail to "freebsd-stable-unsubscribe@freebsd.org" >
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