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calculating extent values

 
newunix
Frequent Advisor

calculating extent values

Hi michael

http://forums11.itrc.hp.com/service/forums/questionanswer.do?threadId=1404400

vgmodify -e 4500 -s 16 /dev/vg07 /dev/dsk/c10t2/d5

PE_SIZE defaults to 4 MB but can be increase to any power of 2. I.e., 1,2,4,8,16 ... 256.

MAX_PE (* total PE's on in a VG *) defaults to 1016.

Note these formulaa:

PE_SIZE = 2 * ( 30 + MAX_PE ) / 1024

256 = 2 * ( 30 + x ) /1024
256 * 1024 = 2 * ( 30 + x)
262144 /2 -30 = x
131042

so finally u got 131042 ,, where did u use this value

y u used 2 and 30 in the above formula