topic Re: Processes hang when accessing cdrom in Operating System - HP-UX

Processes hang when accessing cdrom

Allen Jones — Wed, 01 Dec 2004 18:30:06 GMT

The system is HP-UX 11.11, and I've installed the PHKL_32035, PHCO_25841 and PHKL_26269 patches to enable the Rock Ridge extensions.

I have mounted an Oracle CD with the command:

mount -F cdfs -o rr /dev/dsk/c3t2d0 /cdrom

When I enter "ls /cdrom", all file names look OK, but when I try to read a file on the CD (eg: cat /cdrom/welcome.htm) or run a program from the CD (eg: /cdrom/runInstaller) the session hangs. If I disconnect the session and look at the processes (ps -ef|grep ), I can see the hung process. Kill -9 does not kill the process.

I suspect it has something to do with the way the cdrom is mounted. Any ideas?

Re: Processes hang when accessing cdrom

Nguyen Anh Tien — Wed, 01 Dec 2004 20:33:29 GMT

Allen.
what Oracle version do you use?. If it is oracle 8.1.7. you must mount by pfs_mountd command.
===
1. Determine pfsd and pfs_mountd agent is whether runing or not
#ps -ef|grep pfsd
#ps -ef|grep pfs_mountd
If they are not runing start by 2 command
#pfsd&
#pfs_mountd&
2. Mount Oracle
#pfs_mountd /dev/dsk/c3t2d0 /cdrom
===If you are using other version, Check installation guide inside Oracle CD

Re: Processes hang when accessing cdrom

Bharat Katkar — Thu, 02 Dec 2004 04:42:43 GMT

Hi,
Try doing this:
# mount -F cdfs /dev/dsk/c3t2d0 /cdrom
# cd /cdrom
# more filename

This should work but i doubt if your CD is in problem. It is hanging mean I/o to CD is getting stuck and this could be possible with bad cd. Try mounting another CD and see same thing happens.
Hope that helps.
Regards,

ps. pfs_mount is not required for 11i

Re: Processes hang when accessing cdrom

Allen Jones — Thu, 02 Dec 2004 11:33:16 GMT

Thank you both for your quick responses.

Nguyen: I'm trying to install the Oracle Client for version 10.1.0. I have already installed the Oracle server, mounting the CD's with pfs.

I tried to use pfs to mount the Client CD, but began having problems. After reading many posts in this forum, I applied the above named HPUX patches to enable Rock Ridge, but am still having problems, described above.

Bharat: I tried your suggestion but the file names are not in their correct format. I have to specify the "rr" option in the mount command so that Unix can read the files using their correct names.