Date: Wed, 26 Jan 2011 01:21:40 +0100 From: Rolf G Nielsen <rnmtw@lazlarlyricon.com> To: freebsd-questions@freebsd.org Subject: Re: How to label a GELI device Message-ID: <4D3F6914.3000000@lazlarlyricon.com> In-Reply-To: <20110125183709.GA22024@auricle.charter.net> References: <20110125014223.GA13385@auricle.charter.net> <4D3E8DC0.9060605@gmx.com> <20110125140705.GA20041@auricle.charter.net> <4D3EDE51.6070404@lazlarlyricon.com> <20110125181339.GA21203@auricle.charter.net> <4D3F1649.9000608@lazlarlyricon.com> <20110125183709.GA22024@auricle.charter.net>
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2011-01-25 19:37, J. Porter Clark skrev: > On Tue, Jan 25, 2011 at 07:28:25PM +0100, Rolf Nielsen wrote: >> X-Spam-Level: >> >> 2011-01-25 19:13, J. Porter Clark skrev: >>> On Tue, Jan 25, 2011 at 03:29:37PM +0100, Rolf Nielsen wrote: >>>> >>>> Correct me if I'm wrong anyone. >>>> You need to first label da0s1d >>>> >>>> e.g. like so >>>> >>>> glabel label data da0s1d >>>> >>>> then geli init the labeled device >>>> >>>> e.g. like so >>>> >>>> geli init -l 256 -s 4096 label/data >>> >>> Unfortunately, this step overwrites the label. >> >> It does not. I just tested it with a file backed md device, and >> hexdumped it after each step (creating the file, mdconfig it, label the >> md device and encrypting it). >> After the first two steps, I got just zeros, after labeling it, I got >> the last sector containing the label, and after encrypting it, I got the >> second last sector (i.e. the last sector of the labeled device) >> containing the eli data and the last secor still containing the label. >> >> If it does overwrite the label, you most likely specified the da0s1d to >> the geli init command. You need to specify label/data (replace "data" >> with the name you choose). > > Ah! That is, in fact, exactly what I did. I didn't realize > that the glabeled device was actually shrunk by 1 sector. > > Thanks! > You're welcome. Hope you got it working in the end. :)
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