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Problem:
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Whenever I mount CD manually or automatically, the system either hanged or reboot by itself...depending on which server I am doing it on
I did a "grep -i" for error/fail/warning and there are no error in the /var/log/messages file for either one of them
...
The only different between the two servers is the memory: one has 8G and one has 4G.
Latest version of CentOS5. Updated with latest patch since yesterday.
[root@ap01 ~]# uname -a
Linux ap01 2.6.18-92.1.22.el5 #1 SMP Tue Dec 16 11:57:43 EST 2008 x86_64 x86_64 x86_64 GNU/Linux
[root@ap01 mnt]# mkdir /mnt/cdrom
[root@ap01 mnt]# ls -la
total 20
drwxr-xr-x 3 root root 4096 Jan 14 08:44 .
drwxr-xr-x 27 root root 4096 Jan 14 08:26 ..
drwxr-xr-x 2 root root 4096 Jan 14 08:44 cdrom
[root@ap01 mnt]# mount -r /dev/cdrom /mnt/cdrom
mount: No medium found
[root@ap01 mnt]# eject
...
... put in the CentOS5 DVD
...
[root@ap01 mnt]# mount -r /dev/cdrom /mnt/cdrom
...
rebooted right away. I used the same CentOS 5 DVD I used for the install.
My Windows and Unbutu server can read this same DVD.
Both of the servers can also read it because they went into install mode as soon as it booted up.
[root@ap01 log]# eject -n
eject: device is `/dev/scd0'
I moved the old messages files before I did the mount, and these are the first lines in the files after the reboot/hanged:
Jan 16 14:34:23 ap01 syslogd 1.4.1: restart.
Jan 16 14:34:23 ap01 kernel: klogd 1.4.1, log source = /proc/kmsg started.
Jan 16 14:34:23 ap01 kernel: Linux version 2.6.18-92.1.22.el5 (mockbuild@builder10.centos.org) (gcc version 4.1.2 20071124 (Red Hat 4.1.2-42)) #1 SMP Tue Dec 16 11:57:43 EST 2008
Sorry, I am new to this, and I am not sure of all the acronyms. PSU as in Power Supply Unit?
I am not familiar with PSU problems/symptoms, but I was able to install the whole OS by using the CD/DVD.
If it was a PSU problem would it have shown up earlier?
Also, I forgot to mention this before, but when I had a old RHEL5 installed on them, I was able to mount/umount CD/DVD without any problem. I had to remove them because the I don't have support to download the latest version of RH.
So this kind of suggest something with the latest version of CentOS5 and the hardware?
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