Date: Mon, 25 Jun 2012 17:00:39 +0200 From: Hans Petter Selasky <hselasky@c2i.net> To: maxim naumov <muxx.mailinglists@gmail.com> Cc: freebsd-usb@freebsd.org Subject: Re: Seagate FreeAgent GoFlex 1.5TB external HDD problems Message-ID: <201206251700.39759.hselasky@c2i.net> In-Reply-To: <CAGG2Ak%2Bz3%2B=jcZ6Znws9BLCZX=Ja%2B24n8MLeWfLNO-%2BoJseVDQ@mail.gmail.com> References: <CAGG2Ak%2BXmWvCb3PQoqPXAW7iC0PAQ=GNV79MhhGHjLO4GmWgdw@mail.gmail.com> <201206241533.08745.hselasky@c2i.net> <CAGG2Ak%2Bz3%2B=jcZ6Znws9BLCZX=Ja%2B24n8MLeWfLNO-%2BoJseVDQ@mail.gmail.com>
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On Monday 25 June 2012 00:22:54 maxim naumov wrote: > On Sun, Jun 24, 2012 at 2:33 PM, Hans Petter Selasky <hselasky@c2i.net> wrote: > > Ok, then it is not a USB host problem. > > I am not sure I follow. to me that just proves that the HDD doesn't > have an irrecoverable error on a particular sector. by irrecoverable I > mean an error that would stop the HDD working altogether until power > cycle rather than report a sector read/write error. > > the question what screws up the HDD remains. the HDD can get screwed > up by itself due to a bug in firmware, but why doesn't it happen with > windoze or GNU/Linux? pure luck? Hi, You should compare things like CPU usage and number of interrupts during data transfer, before we could say anything for sure. BTW: Maximum block size for USB 2.0 under FreeBSD is 64Kbytes. BTW: You could try to make a simple c-test program that reads and writes random LBA's from user-space, and see when it stops working. --HPS
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