trouble mounting cdrom 1

[news2me]

I have rebooted my E250 (running solaris 7) Since the reboot I have not been able to access my cdrom. I have very little knowledge on solaris. I have tried to mount the cdrom but I get:

Mount: /dev/cdrom or /cdrom, no such file or directory
or mount: mount point /cdrom0 does not exist

what is going on?

 

[news2me]

so Solaris automatically starts the CD but on my machine its not. I have started the Volume management but still I get nothing. I have a cdrom dir under / but ls -l gives total 0 The dir is owned by root:root is this correct?

 

[bigkatt]

news2me,
Have you checked the /etc/vold.conf file to see that you still have one? I am not thinking you should have a /cdrom dir if you do not have a cdrom in the drive. You might want to remove any media you have in the cdrom, remove the cdrom dir and reboot -- -r. The '-- -r' will pass the '-r' flag to the eeprom to reconfigure the /dev and /devices directories. You can also man vold, volume management daemon for the cdrom.

Good Luck,
BK

 

[news2me]

If I try and remove the /cdrom dir it gives me this error (no matter who is the owner) The drive is empty as well.

#rm -rf /cdrom
rm: Unable to remove directory /cdrom: File exists

there is nothing underneath this directory

# cd /cdrom
# ls -l
total 0

 

[071]

Hi there !
Do you have a core install ? If so type this command.

#mount -F hsfs -o ro /dev/dsk/c0t6d0s0 /cdrom



Cheers,
71

 

[071]

U can restart the daemon by restarting the
/etc/init.d/volmgt service.
Cheers,
71

 

[news2me]

neither of the last 2 replies worked. I started the volmgt and then tried the mount command but got this error:
mount: /dev/dsk/c0t6d0s0 no such device

I have to wait for the weekend to come around so I can bring the box down for a reboot.
Let me ask this:
When I do a reboot -- -r is this going to cause any problems with the way my /dev is set up now. I mean I don't want to screw anything up just to get my cdrom working.

What are the sys files or important files that could be missing something if its not seeing the cdrom. I brought down the box and brought it back up and then no cdrom.

This is too weird.

 

[bi]

Are you sure you have the device file name correct? My system has a different address (its an E450). I don't know how close the E450 and E250 are in terms of hardware addressing.

Here's the command I use on my system:
mount -F hsfs -o ro /dev/dsk/c1t6d0s0 /cdrom

Note that the device file is c1, not c0.

Check also the Sun site regarding a patch (106541_14, I think) that messed up the vold daemon.

 

[bi]

I forgot to add that the info about vold being messed up by the patch is at the very end of a 21-page readme about the patch set. That was several months ago. Hopefully Sun fixed it.

 

[news2me]

Is the cdrom owned by any user? I cannot rm -rf /cdrom without an error that a file exists. no matter who the dir is owned by. I performed a reboot -- -r and I found nothing different. I did see that it was stating it needed a user "nobody" Does anyone know what that is for???

I still can't get this cdrom to work. When it reboots the lights flash and seems to be initializing.

 

[bi]

The directory cdrom on my system is owned by root:nobody.

nobody is a system account. It is used by things like uucp and NFS. It should have been automatically set up on your system at installation. Here is the entry in my /etc/passwd for nobody:
nobody:x:60001:60001:Nobody:/:
And the line in shadow:
nobody:NP:6445::::::
And the line in group:
nobody::60001:

Removing this account and group could cause troubles. I recommend setting up the group and user again.

Have you tried cd'ing into /cdrom? When I cd into my /cdrom, I see directories from my last use of the CD, even though the CD isn't in the drive.

Here is what I would do:

Set up the nobody group and user.
Kill vold.
cd into cdrom and rm -R anything that is in there.
cd out of /cdrom and try unmounting again.
Restart vold after you have unmounted the cd. The command to restart it is /etc/rc2.d/S92volmgt start

 

[bigscouse]

We suffered a similar problem when we applied the latest patches back in November.
The problem has been resolved now by applying tha latest patch set from sunsolve.

Ged Jones

Top man

 

[stevenriz]

This post helped me... a little anyways... a ton of my processes aren't autostarting during restarts and by manually starting volmg start, my cdrom started working again. How does this start during reboots?

 

[bi]

Do a find in /etc for *volmgt*. You should have volmgt in /etc/init.d and an Sxxvolmgt in one of the /etc/rcx.d directories. On my system S92volmgt is in /etc/rc2.d. This is what restarts volmgt on reboot.