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тАО05-05-2010 05:44 AM
тАО05-05-2010 05:44 AM
Max PV bottleneck
I have few HP-UX 11.11 servers and many application VG are facing Max PV bottleneck. When it configured, used default ( 16 ) and Curr PV is now equal to the Max PV.
Application team wants to add more disks on these VGs; but it is not possible at the moment.
Is there any way can I modify these parameter?
Shibin
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тАО05-05-2010 05:57 AM
тАО05-05-2010 05:57 AM
Re: Max PV bottleneck
AFAIK, no. But youc can create a new VG with the desired parameters and use them for the application.
Regards,
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тАО05-05-2010 05:59 AM
тАО05-05-2010 05:59 AM
Re: Max PV bottleneck
I still hope something will be there.
Shibin
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тАО05-05-2010 06:06 AM
тАО05-05-2010 06:06 AM
Re: Max PV bottleneck
Greetings!,
You can use vgmodify with a patch that will allow to modify the vg parameters to get more PV or PE Size. And you can get rid of max PV bottleneck.
-Standard vgmodify support onyl 11.23 and 11.31 . 11.23 needs reboot to apply the patch.
-For 11.11 you can get vgmodify from hp response center.
Check this out:
http://docs.hp.com/en/B2355-60130/vgmodify.1M.html
http://forums13.itrc.hp.com/service/forums/questionanswer.do?threadId=1154249
Hth,
Raj.
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тАО05-05-2010 06:08 AM
тАО05-05-2010 06:08 AM
Re: Max PV bottleneck
It seems you can do it with "vgmodify" (see attach). But as you know it is not supported, so is up to you to use it. I think you may ask for it to HP support.
Regards,
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тАО05-05-2010 06:10 AM
тАО05-05-2010 06:10 AM
Re: Max PV bottleneck
Shibin
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тАО05-05-2010 11:37 PM
тАО05-05-2010 11:37 PM
Re: Max PV bottleneck
Increase the "maxvg" kernel oparameter to a desired value and try again
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тАО05-06-2010 05:07 AM
тАО05-06-2010 05:07 AM
Re: Max PV bottleneck
You have two options
1. you have to tell the apps team to use new mount points.
2. go for a vgmigration activity. create new vgs with high max-pv parameter value, copy data new lvs & then mount these old old mount points.
i have done this type of mygration in my site too... coz of same issue.
Gudluck
Prasanth
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тАО05-12-2010 07:59 AM
тАО05-12-2010 07:59 AM
Re: Max PV bottleneck
We decided to execute one of the 2 options.
1. Migrate to new VG.
2. Get new bigger disk and create mirror on each LV, sync the data and remove the old LUN.
Shibin