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тАО05-31-2002 03:54 AM
тАО05-31-2002 03:54 AM
mediainit on a RAID disk system
I am running HP-UX 11.0 and a TAG RAID disk system ....
thanks
Jay
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тАО05-31-2002 05:00 AM
тАО05-31-2002 05:00 AM
Re: mediainit on a RAID disk system
Im not sure you need to do a mediainit. I think just a pvcreate -f on the /dev/rdsk/c... device would do, then add it into a VG..
Normally mediainit is used for single disks only (ie. the HP can see the whole disk - not a LUN which could be parts of many disks) and it is used to verify the media - mask out bad blocks etc.
I would try pvcreate -f first, if it doesnt work then try a mediainit -v on it (from the HP).
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тАО05-31-2002 05:10 AM
тАО05-31-2002 05:10 AM
Re: mediainit on a RAID disk system
Typically, the raid system should have a mechanism to test and f/w upgrade each individual disk in the lun/array. This is not hp-ux's responsibility.
Perhaps you could try with mstm/xstm if their are expert functions available for the device, however, I don't know your array well, so can't be sure of that.
You should contact the array manufacturer. They'll possibly have s/w to do what you like.
Later,
Bill
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тАО05-31-2002 05:15 AM
тАО05-31-2002 05:15 AM
Re: mediainit on a RAID disk system
I think that you need not do a mediainit on the disk. You can use the Disk array utilities if present. Just a pvcreate -f /dev/rdsk/c1t2d0 will do.
Piyush
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тАО05-31-2002 06:01 AM
тАО05-31-2002 06:01 AM
Re: mediainit on a RAID disk system
thanks for all your help...
Jay
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тАО05-31-2002 07:10 AM
тАО05-31-2002 07:10 AM
Re: mediainit on a RAID disk system
you should format the disk in the array using the array controller utilities. Then once you have created the lun, just do a pvcreate and proceed with your normal vg creation / restore. You should not have to do mediainit from the hp side.
Hope this helps.
Regds
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тАО06-03-2002 04:27 AM
тАО06-03-2002 04:27 AM
Re: mediainit on a RAID disk system
I have tried to do a pvcreate
-f /dev/rdsk/c0t3d0 (device for the RAID disk) but it tells me that the device is assigned in the lvmtab already. Additionally, SAM will not set up a volume group for the same reason. Do I need to physically (using command line) go in and do a lvremove and vgremove and delete the file system entries from fstab?? then do a vgscan??
I appreciate any help I can get.....
Jay
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тАО06-04-2002 06:19 AM
тАО06-04-2002 06:19 AM
Re: mediainit on a RAID disk system
You should be able to perform a vgexport for the volume group associated to the array. After that, you can move the /etc/lvmtab to /etc/lvmtab.orig then run vgscan -a. That should clear up the problem you describe. Once you've done that, run the previously mentioned steps "pvcreate -f". You should then be able to perform LVM functions normally. I don't believe it's necessary to do anything with the fstab entry. Should you find it to be a problem, edit the file and place a '#' in front of the associated entry.
When using SAM, you may find it doesn't work well with the device. In order for SAM to be able to perform functions, it typically will need an entry in the pd_devinfo.tx file. However, you may find it works fine. I'm not familiar with your particular array model.
HTH,
Dave