From owner-freebsd-questions@FreeBSD.ORG Thu Jun 14 06:05:20 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 44C7610656B9 for ; Thu, 14 Jun 2012 06:05:20 +0000 (UTC) (envelope-from freebsd@edvax.de) Received: from mx01.qsc.de (mx01.qsc.de [213.148.129.14]) by mx1.freebsd.org (Postfix) with ESMTP id 02EE08FC16 for ; Thu, 14 Jun 2012 06:05:20 +0000 (UTC) Received: from r56.edvax.de (port-92-195-40-10.dynamic.qsc.de [92.195.40.10]) by mx01.qsc.de (Postfix) with ESMTP id 838AF3D244; Thu, 14 Jun 2012 08:05:12 +0200 (CEST) Received: from r56.edvax.de (localhost [127.0.0.1]) by r56.edvax.de (8.14.5/8.14.5) with SMTP id q5E65BfX001968; Thu, 14 Jun 2012 08:05:12 +0200 (CEST) (envelope-from freebsd@edvax.de) Date: Thu, 14 Jun 2012 08:05:11 +0200 From: Polytropon To: freebsd@dreamchaser.org Message-Id: <20120614080511.0d855639.freebsd@edvax.de> In-Reply-To: <4FD967E8.60305@dreamchaser.org> References: <4FD967E8.60305@dreamchaser.org> Organization: EDVAX X-Mailer: Sylpheed 3.1.1 (GTK+ 2.24.5; i386-portbld-freebsd8.2) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Cc: FreeBSD Mailing List Subject: Re: USB device activity when not mounted X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: Polytropon List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 14 Jun 2012 06:05:20 -0000 On Wed, 13 Jun 2012 22:26:16 -0600, Gary Aitken wrote: > I can understand why I would see activity on a USB device > when it's first plugged in. But why do I see continued > activity (i.e. the light blinks on a usb disk or memory stick)? > When I umount one of these, they keep being beat up on and > it makes me nervous... At what point is it sync'd and safe > to unplug? I assume when the umount returns, but what's going > on after that? 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". :-) -- Polytropon Magdeburg, Germany Happy FreeBSD user since 4.0 Andra moi ennepe, Mousa, ...