Date: Tue, 16 Jul 2019 10:45:07 -0600 From: Warner Losh <imp@bsdimp.com> To: =?UTF-8?B?RG9tYWdvaiBTbW9sxI1pxIc=?= <rank1seeker@gmail.com> Cc: "freebsd-hackers@freebsd.org" <hackers@freebsd.org> Subject: Re: Device's "stolen" sector Message-ID: <CANCZdforpXsdFA-Aykv1pmdVgWaFEU8sCsraq9g-P7sptOJAEA@mail.gmail.com> In-Reply-To: <20190716182350.000054f8@gmail.com> References: <20190716182350.000054f8@gmail.com>
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On Tue, Jul 16, 2019 at 10:25 AM Domagoj Smol=C4=8Di=C4=87 <rank1seeker@gma= il.com> wrote: > 11.2-RELEASE-p9 > > Tested with >1 disks: > -- > SATA disk connected directly with SATA cable to MBO, shows correct amount > of sectors. > diskinfo -v ada1 > > When I connect it to the same MBO over USB to SATA adapter, 1 sector is > missing (the last one) > diskinfo -v da0 > > Having last sector inaccessible is a huge problem as many "things" use it > for a metadata. > This has many times caused MBR disks occasionally to not be visible at al= l > while being 'da0' (gpart: No such geom: da0.) > And also GPT disks to be in a [CORRUPT] state upon reattach directly to > SATA interface. > > Before submitting a bug, there is only 1 variable left that I can't test, > because I have only 1 USB to SATA adapter. > It might be a hardware issue, so can someone else test this too? > On 11.x, I'd install the sg3_util port. You'll need the sg device in your kernel. Use sg_readcap on /dev/da0 to see if the numbers match the devinfo from ada1. If they match, then we have a bug in the da driver. If they differ, you have hardware issues in the USB to SATA adapter. Warner
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