Date: Tue, 30 Sep 2014 17:01:51 +0200 From: Pawel Jakub Dawidek <pjd@FreeBSD.org> To: Karl Pielorz <kpielorz_lst@tdx.co.uk> Cc: freebsd-geom@freebsd.org Subject: Re: GELI created on a GPT labelled partition doesn't work 2nd time around... Message-ID: <20140930150151.GB1702@garage.freebsd.pl> In-Reply-To: <5A6D15305F99246DAE25673C@Mail-PC.tdx.co.uk> References: <FB80B30D52FBD7A0500EF984@study64.tdx.co.uk> <20140928130547.GD1620@garage.freebsd.pl> <5A6D15305F99246DAE25673C@Mail-PC.tdx.co.uk>
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On Tue, Sep 30, 2014 at 09:40:55AM +0100, Karl Pielorz wrote: > > > --On 28 September 2014 15:05 +0200 Pawel Jakub Dawidek <pjd@FreeBSD.org> > wrote: > > > Could you provide the output of: > > > > # diskinfo -v /dev/gpt/abcdef.eli > > Sure, after GPTing, geli init / geli attach - the running the above gives: > > " > /dev/gpt/abcdef.eli > 4096 # sectorsize > 750155304960 # mediasize in bytes (699G) > 183143385 # mediasize in sectors > 0 # stripesize > 0 # stripeoffset > 11400 # Cylinders according to firmware. > 255 # Heads according to firmware. > 63 # Sectors according to firmware. > WD-WCAPT0430257s0s0 # Disk ident. > " > > In the interim - I wrote a script which matches the drives serial numbers, > with keys - and does a 'geli attach' on the raw disk (e.g. /dev/da0) - this > results in da0.eli, which can then be GPT partitioned etc. > > Trying to run anything 'against' /dev/gpt/abcdef.eli results in, e.g. > > # gpart create -s gpt /dev/gpt/abcdef.eli > gpart: provider: Device not configured > > or, > > dd if=/dev/gpt/abcdef.eli of=/dev/null bs=1k count=1000 > dd: /dev/gpt/abcdef.eli: Invalid argument This fails because your gpt/abcdef.eli is configured with 4k sectors. Try: dd if=/dev/gpt/abcdef.eli of=/dev/null bs=4k count=1000 > If I repeat the above steps without the initial GPT partition (i.e. against > /dev/da0) - I end up with '/dev/da0.eli' - which I can then GPT fine etc. Note sure if GPT problem is due to 4k sector or because as jmg@ mentioned it checks for GPT in GPT configuration - a check we may be able to relax. -- Pawel Jakub Dawidek http://www.wheelsystems.com FreeBSD committer http://www.FreeBSD.org Am I Evil? Yes, I Am! http://mobter.com
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