topic Re: Unable to eject cdrom manually or via command line on Linux server in Operating System - Linux

Unable to eject cdrom manually or via command line on Linux server

frederick hannah — Fri, 17 Oct 2008 10:22:27 GMT

I unmounted a cdrom using "umount -l" but attempts to to manually eject the medium fails. I used the umount -l option since the basic umount command always returned "device busy". I can remount the disk without a problem. I just cant get it out of the server. The "eject -d" command doesnt work, either. Any suggestions?

Re: Unable to eject cdrom manually or via command line on Linux server

prasadb — Fri, 17 Oct 2008 11:02:09 GMT

hello frederick hannah ..

>>the basic umount command always returned "device busy".

it seems that you are on the same mount point,

you might have done cd /mnt (the mounted point) may in the other session..

please check it out..

Re: Unable to eject cdrom manually or via command line on Linux server

frederick hannah — Fri, 17 Oct 2008 11:04:35 GMT

I have unmount the cdrom, but i cant get it to eject manually or through the software

Re: Unable to eject cdrom manually or via command line on Linux server

melvyn burnard — Fri, 17 Oct 2008 11:32:03 GMT

Well as this seems to have nothing to do with HP-UX, I am moving it to a more appropriate forum

Re: Unable to eject cdrom manually or via command line on Linux server

Court Campbell — Fri, 17 Oct 2008 16:52:35 GMT

get a paper clip and use it to open the cdrom drive.

Re: Unable to eject cdrom manually or via command line on Linux server

Matti_Kurkela — Tue, 21 Oct 2008 10:53:16 GMT

You've done a "lazy" umount.

Now you'll need to find what is still holding the device open. It might be some process: run "lsof | grep ".

Before doing a lazy umount, the fuser command might have found out the culprit easily: "fuser -m ". Adding the -k option would have killed any process(es) hanging onto the mountpoint. I'm not sure if the fuser command works after a lazy umount.

If you had the cdrom exported as a NFS filesystem, the kernel itself may be hanging on to the cdrom. The lsof command might not be able to detect that. Unexport the cdrom mountpoint, or simply run "exportfs -ar" to refresh the NFS export state to match the current filesystem state.

MK

Re: Unable to eject cdrom manually or via command line on Linux server

Nuwan Alwis — Wed, 22 Oct 2008 03:39:07 GMT

Try if any luck with "eject" command

Re: Unable to eject cdrom manually or via command line on Linux server

frederick hannah — Wed, 22 Oct 2008 12:08:06 GMT

Using the "lazy" umount command was a last resort as none of the other mentioned commands worked. I know this is a bit extreme, but I see rebooting as the only option left.

Re: Unable to eject cdrom manually or via command line on Linux server

Ivan Kuznetsov — Thu, 23 Oct 2008 06:20:11 GMT

Hello

Probably your CDROM drive has a firmware bug and unlocking/ejecting the tray is someway broked. I have two drives doing the same after writing of some DVDs or CDs.