bin/46316: bogus /dev/cd0 access via noauto fstab entry

[martin%NetBSD.org@localhost]

>Number:         46316
>Category:       bin
>Synopsis:       bogus /dev/cd0 access via noauto fstab entry
>Confidential:   no
>Severity:       non-critical
>Priority:       medium
>Responsible:    bin-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Mon Apr 09 12:25:00 +0000 2012
>Originator:     Martin Husemann
>Release:        NetBSD 6.99.4
>Organization:
The NetBSD Foundation, Inc.
>Environment:
System: NetBSD thirdstage.duskware.de 6.99.4 NetBSD 6.99.4 (MODULAR) #23: Mon 
Apr 9 12:13:47 CEST 2012 
martin%night-porter.duskware.de@localhost:/usr/src/sys/arch/sparc64/compile/MODULAR
 sparc64
Architecture: sparc64
Machine: sparc64
>Description:

When booting a -current system I get messages like this during startup:

Checking quotas: done.
Loaded entropy from disk.
cd0(aceride0:0:0):  Check Condition on CDB: 0x00 00 00 00 00 00
    SENSE KEY:  Not Ready                                      
     ASC/ASCQ:  Medium Not Present
                                  
swapctl: setting dump device to /dev/sd0b
Starting virecover.

Note there are two bugs in here: this type of error should probably not
be displayed at all (I think there is already a PR about this and similar
messages in gnats), and second, this device should not have been touched
at all during startup, here is the corresponding /etc/fstab entry:

/dev/cd0a               /cdrom  cd9660  ro,noauto

Removing this line makes the message go away. Note that lines like this are
part of the default install.

>How-To-Repeat:
Just boot a -current system w/o CD medium present.

>Fix:
n/a