Subject: Re: external USB cases for ATA drives
To: None <firstname.lastname@example.org>
From: Steven M. Bellovin <email@example.com>
Date: 12/31/2004 16:08:17
In message <200412311910.iBVJADxu005783@flam.gado>, "Denis Lagno" writes:
>I use USB drives sometimes. Flashes work fine.
>But recently I've got external USB case for hard drive.
>It turns on the drive only after plugging USB cable in.
>And 2-3 seconds are needed to spin the drive on.
>And it often happens that kernel recognizes only umass and
>scsibus at umass, but not sd itself.
>So I need to plug it off and on again in hope of finding
>myself more fortunate.
>Can it be because of some too restrictive timeouts in the kernel?
At least on -current, I don't think that's it. I just bought an
external ATA case, too, and it takes about 30 seconds from when I turn
it on to when I see the console messages showing the attachment.
What version of NetBSD are you running? If it's 2.0 and you're hitting
the buffer memory issue, there should be a message; I don't think that
that message existed in 1.6.x. (I use fvdl's patch, so I don't see the
problem in any event.)
--Prof. Steven M. Bellovin, http://www.cs.columbia.edu/~smb