Date: Mon, 15 Jan 2007 08:05:22 -0800 From: Garrett Cooper <youshi10@u.washington.edu> To: freebsd-questions@freebsd.org Subject: Re: What's the difference between atausb and umass? Message-ID: <B1D35B2E-5703-400C-9EF6-4AE5C5767901@u.washington.edu> In-Reply-To: <20070115152838.GA19982@cactus.homeunix.org> References: <20070115152838.GA19982@cactus.homeunix.org>
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On Jan 15, 2007, at 7:28 AM, Zeng Nan wrote: > Hi, > > As FreeBSD 6.2 is available now, I notice that a new feature is > that ata > driver can support usb mass transport by enable atausb in the kernel. > I'd like to know if atausb has any advantages over traditional umass. > Sometimes when I use external hard disk through usb, the system may > hang. I wonder if atausb solved this problem or not? > > Regards, > -- > Zeng Nan > > MY BLOG: http://zengnan.blogspot.com > Public Key: http://pgp.mit.edu/ | www.keyserver.net > > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > ~ > It's lucky you're going so slowly, because > you're going in the wrong direction. > > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > ~ Just a guess, but I would think that atausb only works for external drives connected via USB, whereas umass is used for all mass storage devices connected via USB (cameras, flash cards, thumb drives, etc). The online manpages don't turn up anything for atausb, so I'm unsure what that feature does exactly in the kernel. -Garrett
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