New HMC Version 7 Release 7.6.0

Will upgrade in a few days ! For me the most interesting parts are : Bug LPM very slow with multiple addresses on the MSPs : FIXED rmdev and cfgdev launched automatically by the HMC when doing DLPAR operations on

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PowerHA 6.1 SP9 : Bug with enhanced concurrent mode

If you upgraded to PowerHA 6.1 SP09, and if you have concurrent VGs, you may encounter this kind of error : in that case you need to apply efix IV27674 : –> Don’t be too hasty to apply the latest Service

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NIM : update your system easily with nimclient

I want to update my client to the latest AIX 7.1 service pack (service pack 5 for AIX 7.1) and I wanna get rid of the old « exportfs – mount – smit update_all – umount  » sequence, and use the

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Replicated rootvg, ghostdev and NPIV (from Chris Gibson)

Here is a very thorough article on the ghostdev attribute, which I wasn’t aware of until now ! Replicated rootvg, ghostdev and NPIV (from Chris Gibson) Since one or more of the physical devices will change when booting from an

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Inserting a line in a file with perl (sed -i doesn’t work on AIX)

The following line will insert « blah blah blah » at the beginning of the file.txt . If you wanna insert a line anywhere else, you just have to modify this « if $. == [line number] » part. If you just wanna modify

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LPM migration failed with reference code 2005 (lpar hung up)

Context I had a problem once which caused the crash of a migrating LPAR, because of a SCSI reserve on my rootvg (rootvg’s hdisk should be ALWAYS set with the no_reserve attribute for LPM, wether they are  managed by MPIO,

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vasistat command and LPM

The Gui on HMC/SDMC is not the best and most accurate way to check the progress of an LPAR live migration (sometimes you just jump from 0% to 76% with no explaination) The best way is to eavesdrop the vasi0

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Can’t achieve concurrent live partition migrations ? Check your max_virtual_slots value !

Context Here are my latest discoveries about concurrent LPM : We had at work a situation where we could not perform concurrent live partition migration between our two p795, however or whatever we tried (multiple HMC/SDMC, multiple MSPs, cross-site migrations…),

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MPIO : Nice and easy way to check if all paths are consistent and available

Sometimes on a server which had some fiber channel difficulties,  I always check if there are some missing or failed paths by issuing this command (sometimes the numbers are not equal, and we have to reconfigure missing paths) : If

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VIO : Forcing WWN on a virtual fc adapter

Unique generated WWNs  ? With the HMC gui, it seems that the WWNs created with a virtual FC adapter cannot be changed, unless you delete the virtual FC adapter and recreate it, but you will have a tiny problem : the

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