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How To Remove SAN Attached LUNs from RHEL 5 Servers Using powermt

Introduction It is one of those rare occasions where you get to reclaim SAN attached storage instead of giving more. From the EMC side of it you would think no problem. Remove the host from the storage group and un-mount and re-scan on the host and all is good, right? Well no, up rises device in use or not found and powermt check command won’t work. So how do we do it? Read on and see. Steps Several... read more

How To Install and Config PowerPath on RHEL

Introduction PowerPath is EMC licensed software for managing SAN attached storage on your systems. In this post we will cover how to install, license and scan for newly attached storage. Prerequisites Download the PowerPath software from EMC powerlink website. If you’ve purchased EMC support, you should have access to powerlink. For RHEL 4 EMCpower.LINUX-5.3.0.00.00-185.rhel.x86_64.rpm... read more

Retrieving EMC and Qlogic Fiber WWN on RHEL

Introduction So you need to add storage to a RHEL (RedHat Enterprise Linux) server and the storage guy has asked you for the WWN.  The question next is how do I get the WWN off my server? So how do we get QLogic and EMC WWN’s on RHEL. It is a lot easier than one might think. Let’s move forward and get the WWN information we need! Qlogic First identify your installed or recognized, this is... read more

How To Install Microsoft SQL drivers and unixODBC 2.3.0 on RHEL 6 64 bit

Microsoft’s SQL drivers can not use the 2.2.14 unixODBC installed with RedHat 6. It requires 2.3.0 which requires compiling and installing from source. First download the latest unixODBC from http://www.unixodbc.org/ . Put tarball in /tmp and extract. Extract the tar ball # tar xvzf unixODBC-2.3.0.tar.gz Change to the unixODBC-2.3.0 directory adn set a few compiler variables, configure, make and install... read more

xterm-256color error in Fedora 18 and 19

After upgrading to the latest release of Fedora I started noticing an error when connecting to older RHEL and Solaris servers and getting an error. This change was implemented in Fedora 18 to allow for support of 256 color terminals. xterm-256color: Unknown terminal type I don't know what kind of terminal you are on - all I have is 'xterm-256color' This was causing issues trying to edit configuration... read more

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