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Full Discussion: AIX help -reconnect EMC lun
Operating Systems AIX AIX help -reconnect EMC lun Post 302965234 by bakunin on Monday 25th of January 2016 08:34:20 PM
Old 01-25-2016
A few words from the moderator, some of them of possibly general interest:

@jhudson12: please heed the advice i left when editing your posts. When you agreed to the terms of service you agreed to use CODE-tags to further the readability of your posts. It might look petty to insist on it, but we try to make the threads we produce here of as much lasting value as is possible. Readability contributes to that goal a considerable amount. COLOR-, FONT- and similar tags make posts less readable on some devices which is why we try to avoid them as much as possible.

Normally we have an infraction system for the neglect to use proper formatting but i think the audience here is mature enough to understand why the rule is in place and willing to follow it once the reasoning is properly explained. Am i mistaken?



@agent.kgb: I kindly ask you to take a nights sleeping and read your words again:
Quote:
I like people, who mark wrong answers with "thanks".
I know you are one of the most capable experts (if not the most capable one of us all) here and you know that - seemingly - too. But i ask you to consider this: will it make your light shine brighter when you make the light of others look dimmer?

I do not suggest to forego XrAys hazardous suggestion and you are perfectly entitled to point out why and how it is hazardous. And you could do so and be the admired hero of this board for your unfailing expertise - instead you choose the form guaranteed to make the majority here accept your undisputed technical prowess through gnashed teeth. In my humble opinion this is a great loss for all involved, regardless of the outcome. And what drives me crazy is the thought that it would take such a minimal change to turn a lose-lose-lose situation into a win-win-win-situation.

Frankly, life is too short and i am too old for unavoidable tragic. Do an old man a favour and capitalize on the great work you do here. I like to think of here as my virtual living room and it aggrieves me to see unnecessary hardships here.



Finally, i have a few technical observations too, in addition to agent.kgbs posting:
Quote:
Code:
root@UDB> lsdev -Cc disk
[...]
hdisk6 Available 14-08-01      EMC CLARiiON FCP MPIO VRAID Disk
hdisk7 Available 14-08-01      EMC CLARiiON FCP MPIO LUNZ Disk

The existence of the LUNZ-device tells me there is something amiss with either the zoning, the FC-adapter or - generally - with the something inbetween the SAN and the LPAR. My suggestion is to remove all the devices hierarchy: pathes to the disk, fcnet and so on, down to the FC-adapter-device, then run cfgmgr again to make sure the configuration is accurate. It might be worthwile to check the integrity of the ODM and remove any artefacts before the cfgmgr run, but this is also advanced work and needs knowledge of AIX.

As far as i remember the CLARiiON there is a (Windows) GUI where you can create copies of the LUNs. I am not sure about snapshots, though, you might have to create a complete copy of the SAN volume. In any case, snapshots and/or copies, create at least one such fallback device before you proceed. It is better to have to throw away a copy you haven't needed than to bemoan the need of an additional copy you have not made while it was possible.

A last thing, because the powermt command is not in the PATH: do an

Code:
# lslpp -l \*EMC\*

and see what comes up. powermt should be in one of the filesets listed, so do a

Code:
# lslpp -f <pkgname> | grep powermt

for each fileset until you find it. Add the path it is in to your PATH variable.

I hope this helps.

bakunin
This User Gave Thanks to bakunin For This Post:
 

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