Date: Tue, 14 Aug 2007 16:14:06 +0200 (CEST) From: Sven Hazejager <sven-freebsd@hazejager.nl> To: soralx@cydem.org Cc: freebsd-hackers@freebsd.org Subject: Re: How to stop attached USB device / send IRP_MN_REMOVE_DEVICE? Message-ID: <07081416114656.-1077948560@somehost.domainz.com> In-Reply-To: <20070814041736.4c16f41e@soralx> References: <07081411265549.-1077952816@somehost.domainz.com> <20070814030833.49a7a030@soralx> <20070814041736.4c16f41e@soralx>
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>>> So, the question really is: how to send a IRP_MN_REMOVE_DEVICE >>> command? >> >> `camcontrol da? stop` seemed to do the trick before (5.2.1-R, AFAIR), >> but now I'm not sure (looks like it doesn't) > > sorry, I meant to say that `camcontrol da? stop` does not power down > the device anymore; nonetheless, it is probably safe to disconnect it No, camcontrol does not support this over USB. Windows XP demonstrates it is technically possible, and I do not believe it is fully safe to disconnect the drive (even when unmounted), as the drive then is not able to park its heads, which it DOES do under XP. So, we come back to the original question: how to send an IRP_MN_REMOVE_DEVICE event? Regards, Sven
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