setting default PP size


 
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Operating Systems AIX setting default PP size
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Old 06-21-2009
Is there a way to increase the PP Size of a volume group say rootvg ?

non-rootvg could be done by taking backup--- delete VG -- Create new VG with new PP SIZE and restore DATA...

But for ROOTVG anything in AIX 6 ?

Another weird thing:

I installed AIX 6 on two different LPARs -- each disk size was 50GB
On One LPAR PP SIZE became 64MB and on the other it became 32MB
This was direct installation from CD ( not via NIM )

references:
Storage Management in AIX 5L Version 5.3

IBM: AIX - Problems with extendvg rootvg hdisk1
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devinfo(1M)						  System Administration Commands					       devinfo(1M)

NAME
devinfo - print device specific information SYNOPSIS
/usr/sbin/devinfo -i device /usr/sbin/devinfo -p device DESCRIPTION
The devinfo command is used to print device specific information about disk devices on standard out. The command can only be used by the superuser. OPTIONS
-i Prints the following device information: o Device name o Software version (not supported and prints as 0) o Drive id number (not supported and prints as 0) o Device blocks per cylinder o Device bytes per block o Number of device partitions with a block size greater than zero -p Prints the following device partition information: o Device name o Device major and minor numbers (in hexadecimal) o Partition start block o Number of blocks allocated to the partition o Partition flag o Partition tag This command is used by various other commands to obtain device specific information for the making of file systems and determining parti- tion information. If the device cannot be opened, an error message is reported. OPERANDS
device Device name. EXIT STATUS
0 Successful operation. 2 Operation failed. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWcsu | +-----------------------------+-----------------------------+ SEE ALSO
prtvtoc(1M), attributes(5) SunOS 5.10 8 May 1997 devinfo(1M)