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тАО11-01-2005 11:11 PM
тАО11-01-2005 11:11 PM
pvchange: Physical voulume :/dev/dsk/c4t0d0" could not be changed:
No such device or address.
pvdisplay /dev/dsk/c4t0d0 has no problem in listing the parameters.
Solved! Go to Solution.
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тАО11-01-2005 11:25 PM
тАО11-01-2005 11:25 PM
Re: IO Timeout and Powerpath
Check your Powerpath version. You may have to update it.
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тАО11-01-2005 11:31 PM
тАО11-01-2005 11:31 PM
Re: IO Timeout and Powerpath
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тАО11-01-2005 11:45 PM
тАО11-01-2005 11:45 PM
Re: IO Timeout and Powerpath
If this does not help, someone in the Response Center can help you if you open a call.
They need to analyze an lssf, ioscan, a pvdisplay, diskinfo -v, look at the drivers in the kernel (specifically scsi drivers) and if there are any associated messages in syslog. There are some internal tools they can provide you that can help analyze the situation as well.
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тАО11-02-2005 12:02 AM
тАО11-02-2005 12:02 AM
Re: IO Timeout and Powerpath
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тАО11-02-2005 02:09 AM
тАО11-02-2005 02:09 AM
Re: IO Timeout and Powerpath
To answer Your question: I never tried it in a power path config, for we only use pvlink on our hp-ux boxes. You should clarify with EMC^2 if You really need to set it - in my experience it's crucial in Clariion/CX + pvlink environments and close to irrelevant with PowerPath and i.e. DMX.
OTOH the default of 30 seconds is a bit short for hot-wiring fibre links ;)
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тАО11-02-2005 05:54 AM
тАО11-02-2005 05:54 AM
Re: IO Timeout and Powerpath
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тАО11-02-2005 06:31 PM
тАО11-02-2005 06:31 PM
Re: IO Timeout and Powerpath
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тАО11-03-2005 12:11 AM
тАО11-03-2005 12:11 AM
Re: IO Timeout and Powerpath
It can be removed by running:
powermt check dev=path
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тАО11-03-2005 02:17 AM
тАО11-03-2005 02:17 AM
Re: IO Timeout and Powerpath
We used to have similar issues when adding LUNS.
But now before we do anything with the EMC disks we do the following:
1. powermt check
--> if it prompts to remove dead paths we remove all.
2. If adding LUNS we create them and assign them to the host at this point via Navisphere.
3. ioscan -fnC disk
4. insf -C disk
5. powermt config
6. powermt save
7. Then we review everything with powermt display dev=all and make sure it matches up with Navisphere.
This is only loosley related to your issue in that we do this to ensure dead paths are removed and that the devices you see with pvdisplay really exist.
Cheers.