Date: Fri, 3 Dec 2010 01:37:43 +0000 (UTC) From: Marcin Wisnicki <mwisnicki+freebsd@gmail.com> To: freebsd-usb@freebsd.org Subject: Re: External usb HDD disconnects, system gets messed up Message-ID: <id9hl7$mau$1@dough.gmane.org> References: <20101125025526.GA2772@mail> <201011250940.19677.hselasky@c2i.net> <20101126020159.GA2408@mail> <201011260817.47338.hselasky@c2i.net>
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On Fri, 26 Nov 2010 08:17:47 +0100, Hans Petter Selasky wrote: > > I think that the USB part of your USB disk has died or there has been a > firmware crash. Other OS'es will perform a complete device reset in this > situation and sometimes that help, but still that is hiding a problem > about the device. We don't do that on FreeBSD, and that might be the > reason it does not recover. Then print a warning. A lot of self-powered 2.5 disks I've used had the same problem. Also, would it be possible to somehow keep the kernel device if physical device reappears within few seconds (with i/o temporarily frozen) such that existing mount points keep working ? > > Check that your disk has external power supply! Sometimes the power > supplied on the USB port is not sufficient. > > --HPS
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