[Openstack] base(backing file) 파일 수정 rebase
1. qemu이미지 파일 확인
qemu-img info [DISK]
image: [DISK]
file format: qcow2
virtual size: [PROVISIONED_SIZE] GiB
disk size: [USAGE_SIZE] GiB
cluster_size: 65536
backing file: [ORI_BASE_PATH]
backing file format: raw
Format specific information:
compat: 1.1
compression type: zlib
lazy refcounts: false
refcount bits: 16
corrupt: false
extended l2: false
Child node '/file':
filename: disk
protocol type: file
file length: 11.1 GiB (11923750912 bytes)
disk size: 11.1 GiB
Format specific information:
extent size hint: 1048576
2. rebase로 backing_file 수정
qemu-img rebase -f [qcow2] -u -F [qcow2] -b [NEW_BASE_PATH] [DISK]
options:
-f : backing file's format
-F : root disk's file format
-b : new backing file's path
-u : unsafe mode (does not check similarity of base image and new base image)