topic Re: Unable to mount cdrom, device busy in Operating System - HP-UX

Unable to mount cdrom, device busy

George_Dodds — Thu, 05 Mar 2009 08:09:32 GMT

I've got a problem with a few itanium servers running 11.22 where i cant mount the cdrom,

Different cd's/dvd's have been tried including HPUX install dvd's.

Checked BDF and cdrom is not mounted.

Below is a few other things i've checked.

disk 0 0/0/3/0.0.0.0 sdisk CLAIMED DEVICE TEAC DV-28E-C
/dev/dsk/c0t0d0 /dev/rdsk/c0t0d0

# / : # mount -F cdfs /dev/dsk/c0t0d0 /cdrom
/dev/dsk/c0t0d0: Device busy

# / : # fuser /dev/dsk/c0t0d0
/dev/dsk/c0t0d0:

# / : # diskinfo -v /dev/dsk/c0t0d0
diskinfo: can't open /dev/dsk/c0t0d0: Device busy

# / : # ls -ltr
drwxrwxrwx 2 root sys 96 Mar 9 2005 cdrom

Created a new directory /cdrom1 and tried to mount that with no success

Checked /etc/mnttab and no entries found

# /dev/dsk : # ls -ltr
total 0
brw-r----- 1 bin sys 31 0x000000 Mar 9 2005 c0t0d0

mayday1: /dev/rdsk : # ls -ltr
total 0
crw-r----- 1 bin sys 188 0x000000 Mar 9 2005 c0t0d0

Tried psf_mount on the offchance.

# /usr/sbin/pfs_mount -t rrip -o xlat=unix /dev/dsk/c0t0d0 /cdrom
pfs_mountd.rpc: Can't open /dev/dsk/c0t0d0: Device busy
/usr/sbin/pfs_mount: /dev/dsk/c0t0d0 on /cdrom: open failed: Device busy
/usr/sbin/pfs_mount: giving up on /cdrom

Have seen this in the past on PA_RISC systems and it required a patch update, has anyone come across the same issue on itanium servers.

Or is it just something silly i'm missing :-)

Cheers

George

Re: Unable to mount cdrom, device busy

Venkatesh BL — Thu, 05 Mar 2009 08:16:55 GMT

> # / : # diskinfo -v /dev/dsk/c0t0d0
> diskinfo: can't open /dev/dsk/c0t0d0: Device busy

Try "diskinfo -v /dev/rdsk/c0t0d0" (you need to give the char device name"

Re: Unable to mount cdrom, device busy

Steven E. Protter — Thu, 05 Mar 2009 08:18:21 GMT

Shalom,

There is no longer a need to use pfs_mount

Try: ioscan -fnC disk

Try using all the device names with diskinfo until you get an answer.

SEP

Re: Unable to mount cdrom, device busy

George_Dodds — Thu, 05 Mar 2009 08:20:34 GMT

Yup allready done, typo on my part.

# diskinfo -v /dev/rdsk/c0t0d0
diskinfo: can't open /dev/rdsk/c0t0d0: Device busy

Re: Unable to mount cdrom, device busy

George_Dodds — Thu, 05 Mar 2009 08:25:28 GMT

Allo SEP, i get a response using diskinfo on other disk devices, just the dvd drives that seem to be an issue.

Re: Unable to mount cdrom, device busy

George_Dodds — Thu, 05 Mar 2009 08:31:40 GMT

Os is 11.23 not 11.22 as stated

Re: Unable to mount cdrom, device busy

Shahul — Thu, 05 Mar 2009 08:34:41 GMT

Hi,

I had a similar problem on an Itanium server, it was because my EMC powerpath was blocking me to use the device file. If you have EMC powerpath, please check. Else ignore this.

Good luck
Shahul

Re: Unable to mount cdrom, device busy

George_Dodds — Thu, 05 Mar 2009 09:27:30 GMT

Hi Shahul

It doesnt have emc powerpath, but will have a look to see if anything else could be blocking the device file. Allthough i'm not sure how to do this.

Re: Unable to mount cdrom, device busy

likid0 — Thu, 05 Mar 2009 09:41:56 GMT

I had a similar problem, and when I whent physicaly to the server the cdrom light was bleeping like mad and it wouldn't open, after I forced opened it, and closed it again, it mounted with no problems.

Re: Unable to mount cdrom, device busy

likid0 — Thu, 05 Mar 2009 09:44:09 GMT

Ah clicked to soon, I also wanted to mention if you tried a lsof against the device, to see whats there ?

Re: Unable to mount cdrom, device busy

George_Dodds — Thu, 05 Mar 2009 10:05:38 GMT

This is an issue on more than on server and different dc/dvd's have been tried.

Will be awkward to get lsof installed due to the change process in place.

Re: Unable to mount cdrom, device busy

George_Dodds — Thu, 05 Mar 2009 11:00:01 GMT

Have tried recreating the device files for the dvd drive on one of the affected systems that has a confirmed ok dvd in the drive and still get the device busy error.

Re: Unable to mount cdrom, device busy

ferrell.scott — Thu, 03 Feb 2011 20:29:09 GMT

i have the same problem with rx4640 servers hp-ux 11.23. sometimes if i reboot and retry to mount it'll work but this server it's happening on now still displays 'mount: /dev/dsk/c0t0d0 on /media/dvdrom : Device busy'