From owner-freebsd-questions@FreeBSD.ORG Thu Jun 14 13:38:06 2012 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (unknown [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id CE210106564A for ; Thu, 14 Jun 2012 13:38:06 +0000 (UTC) (envelope-from jmc-freebsd2@milibyte.co.uk) Received: from avasout08.plus.net (avasout08.plus.net [212.159.14.20]) by mx1.freebsd.org (Postfix) with ESMTP id 293F88FC0C for ; Thu, 14 Jun 2012 13:38:05 +0000 (UTC) Received: from curlew.milibyte.co.uk ([84.92.153.232]) by avasout08 with smtp id NDdy1j004516WCc01DdzuV; Thu, 14 Jun 2012 14:37:59 +0100 X-CM-Score: 0.00 X-CNFS-Analysis: v=2.0 cv=I8Dntacg c=1 sm=1 a=lfSX4pPLp9EkufIcToJk/A==:17 a=rLpCYgkgFLgA:10 a=afQzSb51MlMA:10 a=ZTb9aqGL9YkA:10 a=8nJEP1OIZ-IA:10 a=D7rCoLxHAAAA:8 a=Ec0ERD0qwZ44uMmDQoAA:9 a=wPNLvfGTeEIA:10 a=lfSX4pPLp9EkufIcToJk/A==:117 Received: from curlew.lan ([192.168.1.13]) by curlew.milibyte.co.uk with esmtp (Exim 4.77) (envelope-from ) id 1SfAFE-0002CZ-Ti for freebsd-questions@freebsd.org; Thu, 14 Jun 2012 14:37:57 +0100 From: Mike Clarke To: freebsd-questions@freebsd.org Date: Thu, 14 Jun 2012 14:37:52 +0100 User-Agent: KMail/1.9.10 References: <4FD967E8.60305@dreamchaser.org> <20120614080511.0d855639.freebsd@edvax.de> In-Reply-To: <20120614080511.0d855639.freebsd@edvax.de> MIME-Version: 1.0 Content-Disposition: inline Message-Id: <201206141437.52763.jmc-freebsd2@milibyte.co.uk> X-SA-Exim-Connect-IP: 192.168.1.13 X-SA-Exim-Mail-From: jmc-freebsd2@milibyte.co.uk X-Spam-Checker-Version: SpamAssassin 3.3.2 (2011-06-06) on curlew.lan X-Spam-Level: X-Spam-Status: No, score=-1.0 required=5.0 tests=ALL_TRUSTED autolearn=ham version=3.3.2 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit X-SA-Exim-Version: 4.2 X-SA-Exim-Scanned: Yes (on curlew.milibyte.co.uk) Subject: Re: USB device activity when not mounted X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 14 Jun 2012 13:38:06 -0000 On Thursday 14 June 2012 07:05:11 Polytropon wrote: > I don't think that's a problem. I've got a USB stick here > that has a blinkenlight as soon as it's powered on (plugged > in), even if there is no reading / writing / mounting activity. > > After you've successfully performed umount, the USB stick _is_ > synced and can safely be removed, no matter what you assume > the funny lights want to tell you. > > Maybe that's just a "modern feature" to make the USB stick "more > entertaining". :-) I have a Kingston one here which does appear to only blink while data is being transferred but one thing I have noticed is that the light continues to blink for a few seconds after the umount command completes. Presumably syncing is not compled until a few seconds after umount. Perhaps it's always safer to wait a few seconds after umounting before removing any USB storage device? -- Mike Clarke