AIXpert Blog is about the AIX operating system from IBM running on POWER based machines called Power Systems and software related to it like IBM Systems Director, PowerVM for virtualisation and PowerSC for security plus performance monitoring and nmon
I was with a large UK based insurance company last week. They, and their facilities management team, run many very large machines like POWER6 595 and POWER7 Power 770/780. Most machines are 64 core and 2 TB of memory and running 160+ virtual machines (LPARs) on each. These are large, complex and well run machines - all of the AIX images and VIOS are pretty well up to date with current or N -1 releases. A very pleasant surprise and impressed. They told me that even with 2 TB of memory they tend to run out of memory before CPU cycles . Each... [More]
IBM is enhancing the AIX release and service strategy
effective February 15, 2011.
The key changes are: Three years of new fix support for
each AIX Technology Level update (starting with AIX TL 6) One Technology Level update per AIX
version per year (planned for the second half of the year) Service Packs for Technology
Levels will be released about four times per year These changes reflect client requests for IBM to provide new
fix support for individual Technology Level updates for a longer period. The
intent is to reduce the... [More]
That was a shock - right out of the blue, we are told HACMP (OK we should call it PowerHA SystemMirror but life is too short) now supports Versioned WPARs - I had customer questions on this earlier in the week but no idea it was about to be announced. We were recommending using HACMP at the AIX 7 level and treating the WAR as a very well controlled and isolated bunch of processes, file systems etc. as a single resource. But now its much simpler. Want to know more: Techdoc
I asked Scott about a Redbook for the new VIOS functions for Shared Storage Pools and he told me that chapters had already been added to the current PowerVM Redbooks. I almost fell of the chair! I have been ignoring the regular Redbook update emails - but I guess I should pay more attention. So I took a look and found the Shared Storage Pools have chapters in two regular PowerVM Redbooks - note you have to download the most recent updates. IBM PowerVM Virtualization - Introduction and Configuration SG24-7940 IBM PowerVM Virtualization -... [More]
This is an odd blog - it is about the withdrawal of POWER6 - which was announced in stealth mode! It has come as a shock to some customers. Given POWER7 comes with vast improvements in price performance you might say: Who cares and who would be buying POWER6 anyway? Well some customers with long term roll-out plans, need consistent equipment for reduced complexity and reduced testing and so still want POWER6 and could get caught out. So if you care, here is my list of withdrawal dates after which you can't buy new machines (nor POWER5 to... [More]
We have blogged on this really cool AIX 7 feature in the past - but here is my problem: Once I install the AIX 5.2 mksysb image in to the Workload Partition running on AIX7 it all works fine but ... then what can I show an audience to show off "AIX 5.2 running on top of AIX 7": I need a simple application that only runs on AIX 5.2 . Something simple enough that it does not take hours to install and hopefully that it is something visually interesting to see. I am told we can run Oracle 8 now including the kernel extension but its not... [More]
I have just released a second VIOS Shares Storage Pools movie that you may like to go and watch. We now have two movies covering first an Introduction (the new movie) and then second movie covering a hands-on look at setting it up and running it. There are also the example commands and the Info and download links. I am really liking the Shared Storage Pools simple operation, disk space saving and flexibility. I currently have just a tiny 40GB pool out of which I am running 6 Client Virtual Machine which each think that have 16 GBs. That is 96... [More]
In case, you missed it : AIX became 25 years old, today . AIX is IBM's name for their UNIX, it stands for Advanced Interactive eXecutive and based on AT&T's UNIX System 5.2 and 5.3. I was not at the launch of the IBM RT (the computer on which it ran) but I know people that were apparently there was a lot of dry ice on the stage. Nor was I with IBM at the time but working for a small software developer company. I do remember, having a loan RT from IBM for porting our software and was impressed with the rugged machine. We weren't given... [More]
Finally, I found the time to try this new exciting feature and it was really simple to create and operate. I captured movie footage of my first attempt and it all worked (once I removed my spelling mistakes in commands). It only took two commands. So the technology has advanced concepts but it really easy to use, COOL! Some of the commands come with long option names like "-custername". A quick misquote from Star-Trek, never goes wrong: "It is UNIX Jim, but not as we know it!" One command to create my cluster,... [More]
We all know that a VIOS level is only fully supported for 2 years ... right! If you have problems with an older VIOS, you may be asked to upgrade to a supported level before a fix can be issued. Most teams run a dual VIOS configuration to allow painless and live upgrades for just this reason. The other reason is to survive a VIOS crash but I have never had a VIOS failure but that would be because I don't go fiddling with them nor adding unsupported software. I quickly upgraded my POWER7 VIOS from 2.1 to the latest VIOS level and made a... [More]
You may have seen comments or even presentations with a few slides on VIOS Next Generation or VIOS NextGen in the past year. I did at the Power Technical Universities and was very interested. Well, the first phase has been release but you may well have missed it as it appears as VIOS 18.104.22.168 FixPack 24 Service Pack 01 - not a catchy title and it slipped out below my radar! It is a regular service pack for the current VIOS and include some other features and fixes too. The first thing you have to note is that only a few features are available... [More]
If you are running Systems Director and upgrading to the new version ... WATCH OUT !! Make sure you have 1 GB free space in /var Make sure you have 2 GB free space in /tmp I did not, this upgrade script does not check for free space and it crashed during the Systems Director updating itself (/tmp 100% full) and it never came back. I ended up with a corrupt Systems Director. The smart guys would (before the upgrade) also stopped Systems Director (smstop) and saved the database (smsave) before attempting the upgrade - so the older version... [More]
The new November Update is available from the download site from the regular website: http://www.ibm.com/systems/software/director/downloads/index.html When you have 6.2 or 22.214.171.124 installed get Systems Director to update itself - then update the plug-ins via the download site. There is lots of new features and quality improvements too. I will summarise these in a different blog entry. One quick note: if you are doing a fresh install - install DB2 as the database.
I've just told me this is now available from http://www.ibm.com/systems/support/tools/systemplanningtool/ Update to Version 4.10.323.0 (once you have 4.09.323 installed) OK, we have waited long enough so "hurray" its here at last. My colleague in Norway is going to use this to install a very large Power 795 in Norway next week. He is so happy because its going to save him hours and hours in setup time and will get it right first time.
I was asked at the Technical University: How can we tell (in a script) if we are running in a WPAR or a regular AIX? We also called it the Global AIX, if its running WPARs. It took me a good few minutes to find out how to do it and thought I would shared it to save you time: Use: uname -W It returns 0 for the Global AIX and a regular AIX or if it is in a WPAR it returns the WPAR Number (i.e. non-zero) Below we show how to use this in a script. wparno=`uname -W` if (( $wparno == "0" )) then echo Global AIX else echo... [More]