new IBM pseries and new disks


 
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Operating Systems AIX new IBM pseries and new disks
# 1  
Old 07-19-2007
Error new IBM pseries and new disks

Hello Gurus,
i'm quite new person in AIX world, actually i'm SAP consultant. But due to my job faced with AIX.
Trying to configure new server for installation SAP. We have 4 disks one of them (hdisk3) has VG rootvg. How i can extend rootvg with another disk?
i tried:
# extendvg rootvg hdisk0
0516-1254 extendvg: Changing the PVID in the ODM.
0516-1397 extendvg: The physical volume hdisk0, will not be added to
the volume group.
0516-792 extendvg: Unable to extend volume group.

# lspv
hdisk0 none None
hdisk1 none None
hdisk2 none None
hdisk3 00c448cf7780a976 rootvg active

# lspv -l hdisk0
0516-304 : Unable to find device id 00000000000000000000000000000000 in the Device
Configuration Database.

# chdev -l hdisk0 -a pv=yes
Method error (/etc/methods/chgdisk):
0514-068 Cause not known.

Please Help me....
# 2  
Old 07-19-2007
Well the "extendvg" should of worked so something else is amiss in the system you're working on.

You can try the following:
Code:
rmdev -d -l hdisk0   # remove old hdisk definition
rmdev -d -l hdisk1   # remove old hdisk definition
rmdev -d -l hdisk2   # remove old hdisk definition
cfgmgr               # re-builds the definitions for any new found devices 
lspv                 # verify the hdisks are back

If the hdisks are back ok, then re-do the command --> extendvg rootvg hdisk0.

If it still fails something else is hosed. Look at the errlog (command is --> errpt), it should give a clue. If not, then I'd suggest getting IBM support on the phone and work thru it with them.
# 3  
Old 07-19-2007
bootinfo -s hdisk0 should return the size of the disk in MBs . If it returns "0",

That is either of the following

a) A Failed disk
b) A SAN disk which is exclusively used by the other host to which it is twin-tailed.
c) A SAN disk which was zoned to this system in the past, not anymore.

Regards,

Kaps
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