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How to create Oracle ASM disks using disk or multipath devices in Red Hat Enterprise Linux?

Please use the following steps to create Oracle ASM disks with either disks or dm-multipath: Identify Device(s): determine self-identifier for the disk or multipath device using an environmental (E:) variable from udevadm command output. Create Rule(s): Create a udev rule file /etc/udev/rules.d/96-storage-asm.rules and add a udev rule for each disk or multipath device. Apply Rule(s): Reload the udev service for the above changes to take […]

Shebang Site

The Shebang (#!)   The Shebang (#!) #!/bin/bash This is the first line of the script above. The hash exclamation mark ( #! ) character sequence is referred to as the Shebang. Following it is the path to the interpreter (or program) that should be used to run (or interpret) the rest of the lines […]

RHEL mount hangs: nfs: server […] not responding, still trying

Environment Red Hat Enterprise Linux 7 Red Hat Enterprise Linux 6 Red Hat Enterprise Linux 5 NFS Client (nfs-utils package) Issue NFS shares hang with the following error(s) in /var/log/messages: kernel: nfs: server <NFSservername> not responding, still trying kernel: nfs: server <servername> not responding, timed out Resolution The fix on our system was to lazy unmount, stop […]

conflict between 64 bit and 32 bit package architectures

yum update or yum install fails with package conflict between 64 bit and 32 bit package architectures ? Environment Red Hat Enterprise Linux 5 Red Hat Enterprise Linux 6 64 bit architecture 32 bit packages installed sharing some files with the 64 bit ones Problems Files are conflicting between 64 and 32 bit packages, how […]