Date: Tue, 14 Jul 1998 09:35:46 -0600 (MDT) From: "Kenneth D. Merry" <ken@plutotech.com> To: ckempf@enigami.com (Cory Kempf) Cc: freebsd-scsi@FreeBSD.ORG Subject: Re: CAM, dewfs, camcontrol, CD's Message-ID: <199807141535.JAA08707@panzer.plutotech.com> In-Reply-To: <x7r9zpds4l.fsf@singularity.enigami.com> from Cory Kempf at "Jul 13, 98 11:32:42 pm"
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Cory Kempf wrote...
> I could swear I have posted this at least twice now, but the original
> doesn't seem to be on my machine for some reason. And if the answer
> has changed with the new snapshot, well, it is downloading now.
>
> OK, I am poking into CAM, trying to get the SCSI card that came with
> my scanner to work (see other message). I noticed that the CD ROM
> drive, which seems to be identified via dmesg, and mounts CDs, doesn't
> seem to exist in devfs.
>
> Has this simply not been done yet?
That's correct, CAM doesn't coexist with devfs yet. Just use the
standard device nodes and you should be fine.
> On a related note, camcontrol -l doesn't list my CD drive either.
A common misconception. camcontrol -l is not supposed to list
every SCSI device in your system. I've gotten this same question numerous
times. The -l option only lists peripheral drivers attached to a particular
physical device. I've got another camcontrol option planned that *will*
list every CAM device, but it's not in there yet.
Here are a few examples of how camcontrol -l works:
{roadwarrior:/usr/home/ken:11:0} camcontrol -l
pass0: generation: 4 index: 1 status: MORE
da0: generation: 4 index: 2 status: LAST
{roadwarrior:/usr/home/ken:12:0} camcontrol -n da -u 1 -l
pass1: generation: 4 index: 1 status: MORE
da1: generation: 4 index: 2 status: LAST
{roadwarrior:/usr/home/ken:13:0} camcontrol -n cd -l
pass2: generation: 4 index: 1 status: MORE
cd0: generation: 4 index: 2 status: LAST
So, you see, it just lists the (in this case) two peripheral
drivers attached to each physical device in the system.
If you want to see *every* device in the system, I'd suggest
getting the 'ds.c' program on the ftp sites. It prints out the entire
devstat table, which includes device name/unit number.
Ken
--
Kenneth Merry
ken@plutotech.com
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