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1 PedBrenni commented Permalink

After spending the last 3-4 months with trying to get aix 5.2 version Wpars running on AIX 7.1 , in both Rootvg and SYSTEM form, and with alot of great support from IBM in the states I can say we now have a useable product , <div>&nbsp;</div> What shold be noted is that yes it is easy to create the wpar , but please perform alot of testing as there are limitations around what you can do , support wise and without certain Ifixes which I have aquired through IBM the product can be frustraiting to say the least <div>&nbsp;</div> <div>&nbsp;</div> Here are some of my experiances with AIX 5.2 Version Wpar with Rootvg <div>&nbsp;</div> 1. JFS support . <br /> This is an interesting one , If you need to use JFS ( not JFS2 ) and like us you have large Databases still on JFS and cannot afford the downtime to move to JFS2 then i suggest you use version wpar in system form , IE the aix 5.2 Filsystems exist on the 7.1 lpar not the hidden rootvg disk . <br /> Reason is quiet simple , should you need to change the filesystem size you have to do it on the AIX 7.1 Host , as Version wpar does not support the maniplualation of JFS filesystems . The only other option is to delete the file system and recreate as JFS2. <br /> 2. Nested mountpoints . <br /> If your mksysb contains multiple mountpoints ontop of ./usr /var etc , then unless you have the Ifix there are issues creating the actual Version wpar <br /> 3. Addtional luns added to version wpar <br /> AIX 7.1 TL1 broke this , so you need the I-fix to enable disks you add to the wpar to persist after a reboot , as at the moment they do not and when you log into your wpar after the reboot they are defined , which measns you need to delete and re-add <br /> 4. HACMP - Power HA <br /> I am currently working on a way to get a working environment , which alows changes to be made while the system is live , this is still in a testing phase <div>&nbsp;</div> In Summary , this is a great product , but has been let down slightly with issues in later releases of AX 7.1 , but there are Ifies out for these <div>&nbsp;</div> PS , constantly keep your eyes open for new fixes etc :-) <div>&nbsp;</div>

2 Sarah Reed commented Permalink

I am new to WPARs and will be attempting them probably soon. Are there any gotchas around AIX 5.3 WPARS on AIX 7 on Power 8 hardware? Or should it be similar to Power 7?

3 nagger commented Permalink

Hi Sarah Reed, You are thinking about this all the way. Versioned WPARs are dependant on AIX 7 not the hardware. There are no processor dependant parts to WPAR. Please take the time to watch some of my hands-on Youtube videos on WPARs then you will have few surprises http://youtube.com/nigelargriffiths Provided your AIX 5.3 mksysb is at the right AIX level and smallish it will all work. Also don't forget you can put a mksysb on a USB memory key these days for when you have to ship it to the target host machine. Cheers, Nigel