Date: Fri, 07 Nov 2014 14:03:36 +0100 From: Hans Petter Selasky <hps@selasky.org> To: Aurelien Martin <01aurelien@gmail.com>, freebsd-usb@freebsd.org Subject: Re: g_vfs_done() error=5 USB disk on raspberrypi. Decrease the speed of USB Message-ID: <545CC328.4070006@selasky.org> In-Reply-To: <CAFGQ1grt0o=tADUf44Omyogn3agXeYkQjo_=T6zCcg3=k9SjCA@mail.gmail.com> References: <CAFGQ1grt0o=tADUf44Omyogn3agXeYkQjo_=T6zCcg3=k9SjCA@mail.gmail.com>
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On 11/07/14 13:25, Aurelien Martin wrote: > Dear all, > > My raspberry-pi is crashing in g_vfs_done error 5 () when I'm trying to > copy data from the rpi (with dd) to my USB drive on UFS2 > I can notice a high %system load ~100% on the rpi before the crash > > Apparently people succeed to "fix it" by decreasing the speed of the USB > bus with sysctl hw.usb.ehci.no_hs = 1 > > But in my case I cannot set this sysctl. And I didn't succeed to fix it > with camcontrol > > Can you guide me on my investigation to decrease the speed of USB ? > Hi, If you connect your USB device through an external full speed USB HUB, it will go full speed. It is possible to make all RPI-B devices enumerate at full speed too, but then you will have decreased network performance. Is you external USB device known to be buggy? --HPS
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