Date: Mon, 21 Feb 2011 18:59:50 +0300 From: Boris Samorodov <bsam@ipt.ru> To: Kurt Jaeger <lists@c0mplx.org> Cc: freebsd-stable@freebsd.org Subject: Re: 3TB disc and block alignment Message-ID: <37576665@h30.sp.ipt.ru> In-Reply-To: <20110217204643.GJ34314@home.opsec.eu> (Kurt Jaeger's message of "Thu, 17 Feb 2011 21:46:43 %2B0100") References: <20110217115653.GH34314@home.opsec.eu> <AANLkTi=QMXvFtTyY9BUGg56VtTuac3G_0LnXaVboJQQz@mail.gmail.com> <20110217124515.GI34314@home.opsec.eu> <4D5D1D10.7010000@digsys.bg> <20110217180140.GL66849@dan.emsphone.com> <20110217204643.GJ34314@home.opsec.eu>
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On Thu, 17 Feb 2011 21:46:43 +0100 Kurt Jaeger wrote: > Hmm, wasn't the issues with 3T drives, that they internally use > 4K blocks and emulate 512 and that therefore 8 block alignments > are an performance issue ? > The reason I'm asking: I encounter the problem of the lost > secondary GPT table: > Feb 17 22:15:44 vserv1 kernel: GEOM: ad7: the secondary GPT table is corrupt or invalid. > Feb 17 22:15:44 vserv1 kernel: GEOM: ad7: using the primary only -- recovery suggested. > Feb 17 22:15:44 vserv1 kernel: GEOM: ufsid/4d5d8faa10b63ac1: the secondary GPT table is corrupt or invalid. > Feb 17 22:15:44 vserv1 kernel: GEOM: ufsid/4d5d8faa10b63ac1: using the primary only -- recovery suggested. It may be the case here if you to used glabel(8) to create a label for the whole disk. Geom puts it's metainfo at the last sector of the disk -- the same place which a secondary GPT table uses. > I had this disc connected via some usb2sata adapter as da0, and there > was no error message when I did the 'gpart create ad7' thing. > When I now connect it to the some other box as ad7 and this error > message appears: Which of the two has the problem with the > controller not getting the large size disc correct ? -- WBR, bsam
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