Date: Wed, 4 Jan 2012 21:40:09 +0100 From: Alexander Leidinger <Alexander@Leidinger.net> To: Dan Carroll <dan@sputnik.net.au> Cc: freebsd-fs@freebsd.org Subject: Re: ZFS With Gpart partitions Message-ID: <20120104214009.00004dbe@unknown> In-Reply-To: <4F039594.4080408@sputnik.net.au> References: <4F003EB8.6080006@dannysplace.net> <CALfReyfvOCMpBdndf7UYydmGnUqt2cBYWdhYXaOANbQ_CFHoVA@mail.gmail.com> <4F02FC42.1040103@dannysplace.net> <4F0311F2.7050209@brockmann-consult.de> <4F0312DF.8050004@brockmann-consult.de> <20120103162428.GA18661@icarus.home.lan> <CALfReyc11ZriFPZmm15YwS5VeA1P4Epub1vyZM%2BfC8X2X0_mHw@mail.gmail.com> <20120103235108.GA25691@icarus.home.lan> <4F039594.4080408@sputnik.net.au>
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On Wed, 04 Jan 2012 09:56:04 +1000 Dan Carroll <dan@sputnik.net.au>
wrote:
> On 4/01/2012 9:51 AM, Jeremy Chadwick wrote:
> > Agreed. The question is why FreeBSD isn't using those defaults in
> > its installer. Furthermore, have you tried to actually accomplish
> > this with gpart? I have. I got practically no where. The -a flag
> > doesn't always do the right thing, and with the -b flag you have to
> > "out-smart" internal calculations being made by the software
> > itself. I also had to do the alignment offset at the filesystem
> > level, and not at the actual slice level. E.g.: gpart create -s mbr
> > adaX gpart add -t freebsd adaX gpart create -s bsd adaXs1 gpart add
> > -b 4033 -s {size} -t freebsd-ufs adaXs1 I forget what the result
> > was if I tried to use -b during the first "gpart add", but it kept
> > coming out wrong or simply didn't work.
>
> In that case is there a "best practices" guide out there anywhere
> describing how this should be done?
There are several HOWTOs available.
If you don't mind that it is with GPT and not MBR:
http://www.leidinger.net/blog/2011/05/03/another-root-on-zfs-howto-optimized-for-4k-sector-drives/
Bye,
Alexander.
--
http://www.Leidinger.net Alexander @ Leidinger.net: PGP ID = B0063FE7
http://www.FreeBSD.org netchild @ FreeBSD.org : PGP ID = 72077137
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