Date: Mon, 06 Dec 2010 16:34:09 +0200 From: Andriy Gapon <avg@freebsd.org> To: Bruce Cran <bruce@cran.org.uk> Cc: freebsd-usb@freebsd.org Subject: Re: "Autosense failed" - I/O stops on SD card reader Message-ID: <4CFCF461.8090208@freebsd.org> In-Reply-To: <20101204144023.2f4be1a5@core.draftnet> References: <20101204144023.2f4be1a5@core.draftnet>
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on 04/12/2010 16:40 Bruce Cran said the following: > Hi, > > I've been having problems with a card reader (http://www.frontier-electronics.co.za/stor_sdr012.htm) > and an 8GB SD card > (http://www.amazon.co.uk/Transcend-SDHC-Class-Flash-Memory/dp/B000P9ZBFA) > I'm trying to use. FreeBSD 9-CURRENT will regularly display the > following error which causes all IO to stop: > > (da0:umass-sim0:0:0:0): AutoSense failed As I understand, "AutoSense" is an automatic fetching of sense data in case of an error. Strange that that error is not reported here. It would give a much better idea of what was going on. > g_vfs_done():da0s1[READ(offset=6782976, length=36864)]error = 5 > vnode_pager_getpages: I/O read error > vm_fault: pager read error, pid 2986 (cp) > > I tried setting hw.usb.umass.debug=1 but there was no extra debug > output; setting hw.usb.ehci.debug=1 or hw.usb.debug=1 results in > lots of output that I'm not sure is useful. > What would I need to do to help debug what's going wrong? -- Andriy Gapon
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