Date: Sun, 18 Aug 2013 00:55:03 +0300 From: Alexander Panyushkin <vsityz@gmail.com> To: Alexander Motin <mav@FreeBSD.org> Cc: Hans Petter Selasky <hps@bitfrost.no>, FreeBSD Current <freebsd-current@freebsd.org> Subject: Re: USB no proper work Message-ID: <520FF137.1020709@gmail.com> In-Reply-To: <520FA7C3.2060708@FreeBSD.org> References: <520E8602.5050408@gmail.com> <520E8842.4020609@bitfrost.no> <520E8DE1.1090609@gmail.com> <520F16B6.1070106@bitfrost.no> <520FA7C3.2060708@FreeBSD.org>
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17.08.2013 19:41, Alexander Motin пишет: > On 17.08.2013 09:22, Hans Petter Selasky wrote: >> On 08/16/13 22:38, Alexander Panyushkin wrote: >>> ========This deatach========== >>> Aug 16 23:24:05 scorpion kernel: ugen1.2: <Generic> at usbus1 >>> (disconnected) >>> Aug 16 23:24:05 scorpion kernel: umass0: at uhub0, port 4, addr 2 >>> (disconnected) >>> Aug 16 23:24:05 scorpion kernel: (da0:umass-sim0:0:0:0): lost device >>> - 0 >>> outstanding, 2 refs >> >> Hi, >> >> The 2 refs is a problem that someone is keeping the device opened. >> That's the problem and that's what is stopping the enumeration thread. > > 2 refs may be not a CAM bug. One of them can be GEOM reference and > another is open device reference. What were the file systems on the > device and were they active/mounted during detach? > > Just recently I tested hot-plug device with ZFS on 10-CURRENT using > USB sticks and found no problems in either CAM or USB stack around > device disconnect. > On USB device FAT-32 file system. When I removed flash drive, the file system has been unmounted.
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