topic Re: CDROM hangs after manual eject in Operating System - HP-UX

CDROM hangs after manual eject

Robert Taylor_1 — Tue, 01 Jan 2002 23:52:05 GMT

Hi!

On a variety of systems running HPUX B.11.00, I have had this problem with standard CDROM drives and DVD drives - After using the drive for installs etc. I issue the "umount /cdrom" command. When I go to the drive and try and eject the tray, it does nothing. If I manually eject the tray using the old "paper clip in the hole" trick, sometimes (more often than not), the machine goes into some strange state, where it appears some process is consuming all the CPU for short bursts of time.

Anyone had this problem, and know of a solution??

Thanx in advance

Cheers
Robert

Re: CDROM hangs after manual eject

Scott Van Kalken — Tue, 01 Jan 2002 23:59:52 GMT

I've only seen this happen with oracle CD's that weren't mounted using the pfs mount command and all of the options.

However, this could also be a firmware or cable thing. I've not heard of dodgy firmware in CDROM's / DVD's but you never know.

Not very helpful I know...

Scott.

Re: CDROM hangs after manual eject

James R. Ferguson — Wed, 02 Jan 2002 00:04:26 GMT

Hi Robert:

One thought that comes to mind is to make sure that your current directory isn't the CD's mountpoint and/or that there are no user's of it:

# fuser -cu /cdrom_mountpoint

Regards!

...JRF...

Re: CDROM hangs after manual eject

Robert Taylor_1 — Wed, 02 Jan 2002 01:03:37 GMT

Thanks to Scott, who prompted me to check out the PFS thing.

These are in fact Oracle installation CD's.

What I found was that, after killing all the PFS daemons which were running, my problem "went away" (my favourite kind of problem, that!), and I was able to mount the next CDROM the normal (ie. non-PFS) way...

Thanks for your replies

Re: CDROM hangs after manual eject

Tom Geudens — Wed, 02 Jan 2002 05:37:51 GMT

Hi Robert,
An extra thought ...
I would not try to restart the pfs daemons later on on this machine. It's a classical case. Yes, you solved the immediate problem, but since you did not "follow the rules" a next pfs-mount will again cause trouble. Do a reboot of the machine first ...

Just my ???0.02
Tom Geudens

Re: CDROM hangs after manual eject

Sanjay_6 — Wed, 02 Jan 2002 06:06:50 GMT

Hi Robert,

Try these links,

http://us-support2.external.hp.com/cki/bin/doc.pl/sid=a3bbfaa207dfcf9d29/screen=ckiDisplayDocument?docId=200000054869764

http://us-support2.external.hp.com/cki/bin/doc.pl/sid=a3bbfaa207dfcf9d29/screen=ckiDisplayDocument?docId=200000035869288

Hope this helps.

Regds

Re: CDROM hangs after manual eject

Sanjay_6 — Wed, 02 Jan 2002 07:01:29 GMT

Hi Robert,

Try these threads to troubleshoot pfs mount cd problems,

http://us-support2.external.hp.com/cki/bin/doc.pl/sid=cef2be080726461aba/screen=ckiDisplayDocument?docId=200000053029462

http://us-support2.external.hp.com/cki/bin/doc.pl/sid=cef2be080726461aba/screen=ckiDisplayDocument?docId=200000055877498

Hope this helps.

Regds