Coretanium

During a routine scheduled upgrade window I upgraded to the latest Dell OMSA on a range of Dell PowerEdge servers running CentOS. After the upgrade, shell scripts that check the health of disks started reporting that no storage controllers can be found.


# omreport storage pdisk controller=0
Invalid controller value. Read, controller=0
No controllers found.


After some digging through the Dell mailling lists it became apparent that i’m missing the Dell Firmware Tools on my installation. Installing the firmware tools solved the problem.


# yum -y install dell_ft_install

# srvadmin-services.sh restart


Once done, all was fine.

Edit /etc/postfix/master.cf and uncomment the submission line;

smtp      inet  n       -       -       -       -       smtpd
submission inet n       -       -       -       -       smtpd

Your postfix installation will now accept connections on both port 25 & 587 which is useful to hand out to users who’s ISP’s block outgoing connections to port 25.

yum clean all

yum update

If you get the above error while trying to mount an ISO image, try to the following;

Option 1

MAKEDEV loop (If it doesn’t exist already)

modprobe loop

mount -t iso9660 -o loop yourisofile.iso /mnt/iso

Option 2

cd /dev/;mkdir loop;cd loop;mknod 0 b 7 0

mount -t iso9660 -o loop yourisofile.iso /mnt/iso

# touch -amt 200906220000 /tmp/date1
# touch -amt 200906222359 /tmp/date2
# find / -type f -newer /tmp/date1 -a ! -newer /tmp/date2–