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AIX devices rescan "cfgmgr" does no longer discover a powerpatrh device
Hello,
Aix command "cfgmgr" does not discover a powerpath device.
The AIX server has powerpath devices, last time we created a 2 Tb Lun and associated it to a SG, then created an AIX Volume group and Filesystem
on it. We destroy everything again because the SuperBloc of the file system had a problem, now we cannot recreate a powerpath device again, no error
displayed.
Which commands to use to the hdiskpower ?
Thanks for help
Consty
jespinoza1
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September 13th, 2012 13:00
What command did you use to destroy the LUN? An "exportvg" followed by a "powermt remove dev=hdiskpowerX" ?.
Did you count the number of PowerPath pseuodos before and after this process (to determine if you really 'lost' the PowerPath pseudo, or if it came back under a different hdiskpowerX name) ?
If you remove the LUN from the array (as part of the "destroy" process), it could have come back as a different LUN w/ a different hdiskpower name.
Checking the output of "powermt display" after the "powermt config" should tell if a new hdiskpower got configured due to the" powermt config"
Consty
232 Posts
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September 14th, 2012 02:00
Thanks for your response.
I did an "exportvg" followed by "powermt remove dev...", I counted the number of pseudos, they were 6 from 0 to 5,
I've also ran "powermt config" then "cfgmgr", it's the same, no way to discover hdiskpower6 again.
Regards
jespinoza1
52 Posts
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September 14th, 2012 05:00
One reason PP will not configure a PP pseudo is when all paths are dead, or in a strange state (such a not-ready).
When cfgmgr was run, did the hdisk devices for the missing PP pseudo show up as available ?
dynamox
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September 14th, 2012 05:00
but native (hdisk) gets discovered ?
dynamox
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September 14th, 2012 07:00
compare output from "powermt display dev=all" and lsdev -Cc disk
Consty
232 Posts
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September 14th, 2012 07:00
Hello,
There are hdisks, it is difficult to know which ones were discovered afterwards .
How to see the corresponding hdisks for the missing PP ?
Thanks
Regards
Consty
232 Posts
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September 14th, 2012 08:00
Same hdiskpowerX from 0 to 5.
On remark, I saw some LUNZ hdiskY at the beginning and I deleted them
Thanks
Regards
Consty
232 Posts
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October 11th, 2012 09:00
Hello,
Everything was OK after rebooting the system.
Thanks for assistance
Consty