Date: Tue, 30 Sep 2014 06:54:45 -0700 From: John-Mark Gurney <jmg@funkthat.com> To: Karl Pielorz <kpielorz_lst@tdx.co.uk> Cc: Pawel Jakub Dawidek <pjd@freebsd.org>, freebsd-geom@freebsd.org Subject: Re: GELI created on a GPT labelled partition doesn't work 2nd time around... Message-ID: <20140930135445.GB43300@funkthat.com> 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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Karl Pielorz wrote this message on Tue, Sep 30, 2014 at 09:40 +0100:
>
>
> --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
>
> 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.
gpt doesn't let you do gpt in gpt.. which explains why you can't
create the second level of gpt...
Why do you want/need to partition again? You could possibly use bsd
as the second layer...
--
John-Mark Gurney Voice: +1 415 225 5579
"All that I will do, has been done, All that I have, has not."
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