3PAR存储在创建CPG时，提示系统空间不足？

createcpg could also fail if more than 3 cages are available but there are not enough free chunklets per devtype on a cage. 

Example of createcpg failing : 

createcpg -sdgs 8g -t r5 -ssz 8 -ha mag -p -devtype FC 3PARCPG 

The showspace command show that there is enough available space 

3PAR cli% showspace -t r5 -ssz 8 -ha mag -p -devtype FC
--Estimated(MB)---
RawFree UsableFree
1118208     978432 

showeventlog -debug output 

createcpg -sdgs 8192 -sdga {-t r5 -ssz 8 -ha mag -p -devtype FC} -saga {-p -devtype FC} 3PARCPG Error: Error: no available space for given (invalid?) parameters} {} 

Workaround 

Creating the cpg forcing the SA space to go on only two cages or reducing the set size will work, every configuration is different, these are only examples: 

createcpg -sdgs 8g -t r5 -ssz 8 -ha mag -p -devtype FC -saga "-p -cg 1-2" 3PARCPG
createcpg -sdgs 8g -t r5 -ssz 8 -ha mag -p -devtype FC -saga "-p -devtype FC -ha mag -ssz 4" 3PARCPG