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I want to know disks in xp48 available to the server

Mouad_1
Frequent Advisor

I want to know disks in xp48 available to the server

I need space in some vg, and want to add disks (lun) from the xp48, but don't have access to the xp48.
There are some /dev/dsk/CxTyDz that are not used by any vg. Are these luns that are mapped from the xp48, and are they free to pvcreate them and then vgextend ?
Attached `xpinfo`, `ls /dev/dsk/*` and strings `/etc/lvmtab`
Thanks a lot.
3 REPLIES
Leif Halvarsson_2
Honored Contributor

Re: I want to know disks in xp48 available to the server

Hi,
Two other useful command is :
ioscan -fnC disk
diskinfo /dev/rdsk/..... (raw devicefile name)


Is zoning/presentation/lun-masking (or whatever it is called for rhe xp array) correct configured. If not, it is of course a risk that the lun is used by another system.
Mouad_1
Frequent Advisor

Re: I want to know disks in xp48 available to the server

Thanks for reply. I don't know if lun mapping was correctly configured (by HP :)
but i need to know where those disks in /dev/dsk (not used by any vg) come from ?
Here is an ioscan -nfkCdisk.
Marek Smejkal
Frequent Advisor

Re: I want to know disks in xp48 available to the server

If you run diskinfo on those "disk-subsystems" devices, they should be 0 size. It is bug from XP (usualy created when non continuous LUN mapping on XP), maybe there is a patch to fix ioscan. Generaly this is no harm to the system.

Marek