Udev thinks my cdrom is a char device?
From: Ryan Reich (ryanr_at_uchicago.edu)
Date: 05/30/04
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Date: Sun, 30 May 2004 15:54:52 -0500 To: linux-kernel@vger.kernel.org, linux-hotplug-devel@lists.sourceforge.net
I don't use my CD-ROM drive too often, and in fact I think the last time I
did was 4 April, to make a backup; at the time I was running 2.6.4, patched
with supermount and bootsplash. Now I run 2.6.5, and I find the following
odd situation in /dev:
# ls -l /dev/hd*
brw-rw-rw- 1 root root 3, 0 May 13 07:18 /dev/hda
brw-rw-rw- 1 root root 3, 1 May 13 07:18 /dev/hda1
brw-rw-rw- 1 root root 3, 64 May 13 07:18 /dev/hdb
brw-rw-rw- 1 root root 3, 65 May 13 07:18 /dev/hdb1
brw-rw-rw- 1 root root 3, 66 May 13 07:18 /dev/hdb2
brw-rw-rw- 1 root root 3, 69 May 13 07:18 /dev/hdb5
brw-rw-rw- 1 root root 3, 70 May 13 07:18 /dev/hdb6
brw-rw-rw- 1 root root 3, 71 May 13 07:18 /dev/hdb7
brw-rw-rw- 1 root root 3, 72 May 13 07:18 /dev/hdb8
crw-rw-rw- 1 root root 22, 0 May 30 15:41 /dev/hdc
It's probably not just me that hdc (my CD-ROM) should be a block device. I
use udev to manage /dev but I haven't touched a line of any script in months;
deleting and recreating the device with udev reproduces the problem. If I
manually create /dev/hdc with `mknod -m 666 /dev/hdc b 22 0` I can read the
disc in the drive. The directory /sys/block/hdc exists and contains a
device, but for some reason udev makes a char device anyway.
No other block device has this problem (i.e. I have been able to boot my
computer from a hard disk); what's going on here?
-- Ryan Reich ryanr@uchicago.edu - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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