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[ljvsss <ljvsss@xxxxxxxxx>]

hi all

if i create an instance flavor of m1.large(4u,8GRAM.80G disk),at floder
here /var/lib/nova/instances/instance-0000006 will have two img：disk and
disk.local
they format is same，qcow2 or raw
what i want is the "disk" (instance os disk) format  is qcow2,and the
disk.local's format is  raw,because qcow2 is small and easy to make
snapshots,raw's speed is bettter

what should i do?

thanks :)