device busy when mounting cdrom

[James Ellis_1]

When I try to mount the cdrom using:

mount /dev/dsk/c0t1d0 /cdrom

I get the error message:
/dev/dsk/c0t1d0: Device Busy

I checked and did not see any cd in the cdrom. I forgot what caused this device busy.

Any suggestion on what to look at?
Thanks.

[Jeff Schussele]

Hi James,

Are you, or anyone, sitting in /cdrom?
DO a fuser -u /cdrom to tell
Is /cdrom still mounted?
Do a bdf to tell

Rgds,
Jeff

[Uday_S_Ankolekar]

Hello,

See with fuser command if anybody using cdrom

fuser -cu /cdrom

If not

Try mounting with pfs_mount

nohup /usr/sbin/pfs_mountd &
nohup /usr/sbin/pfsd &
/usr/sbin/pfs_mount -t rrip -x unix /dev/dsk/devname /cdrom

-USA..

[James Ellis_1]

I'll check to see if anyone is using /cdrom, but I doubt it bec BDF does not show /cdrom as mounted. Let me check and see. Thanks. I'll get back in a few minutes.

[MANOJ SRIVASTAVA]

I think /dev/dsk/c0t1d0 is not a cdrom , please do a ioscan -fnC cdrom and check for the device file , also ensure that no one is in /cdrom directory . This you may try by mounting the device on some other directory.


Manoj Srivastava

[James Ellis_1]

I did the fuser, and there are no one using the cdron, and I was sitting in the / directory.

Uday, I did what you suggested, except for the last line/command. I remember running the command you suggested when I was working with Oracle dba...BUT I used to be able to mount/umount /dev/dsk/c0t1d0 without any problems. Do I need to start using the pfs_mountd command?

Right now, I din't see any cdrom drive when I do a BDF. Why?

Thanks.

[Sajid_1]

hello,

first make sure that you not in the directory /cdrom:
# pwd
# cd /
then give the mount command.
Check 'fuser' and see anybody using /cdrom.
Check and find out the correct device name for CD drive:
# ioscan -fnC disk

[steven Burgess_2 · Accepted solution]

James

Eject the cd-rom then re-insert and try another mount

HTH

Steve

[James Ellis_1]

Manoj,

I was not able to get anything when I did
ioscan -fnC cdrom but

ioscan -fnC disk brought up a list of disks, and under DVD-ROM is shows the device as /dev/dsk/c0t1d0.

Thanks.

[Sajid_1]

hi again,

Did you find out the device file for the CD drive (ioscan)? May be the device file you are trying is wrong!

[Pete Randall]

James,

I think Manoj is right c0t1d0 is not normally a cdrom drive. Check your ioscan:

# ioscan -kfnCdisk
Class I H/W Path Driver S/W State H/W Type Description
============================================================================
disk 0 8/0/19/0.5.0 sdisk CLAIMED DEVICE SEAGATE ST34520W
S
/dev/dsk/c1t5d0 /dev/rdsk/c1t5d0
disk 1 8/0/19/0.6.0 sdisk CLAIMED DEVICE QUANTUM VIKING2-
4WS
/dev/dsk/c1t6d0 /dev/rdsk/c1t6d0
disk 2 8/16/5.2.0 sdisk CLAIMED DEVICE TOSHIBA CD-ROM X
M-5701TA
/dev/dsk/c2t2d0 /dev/rdsk/c2t2d0


In this one you can see the Toshiba CD-ROM is at /dev/dsk/c2t2d0.

Pete

[Pete Randall]

Disregard, then.

Pete

[Sajid_1]

hi again,

okay, now you found it's c0t1d0. Check what will be the output of this:
# diskinfo /dev/rdsk/c0t1d0
This should give you the details of the CD inside the drive (size), if there is a CD there.

[James Ellis_1]

Case is closed! Removing the CD and re-insterting did the trick! Oh well...thanks guys.