qCOW 이미지

1 개요

QEMU Copy-On-Write; qcow

큐카우

• QEMU에서 사용하는 디스크이미지 파일포맷
• 확장자: .qcow

root@zetawiki:~# file Fedora-Cloud-Base-20141203-21.i386.qcow2 
Fedora-Cloud-Base-20141203-21.i386.qcow2: QEMU QCOW Image (v2), 3221225472 bytes

root@zetawiki:~# qemu-img info Fedora-Cloud-Base-20141203-21.i386.qcow2 
image: Fedora-Cloud-Base-20141203-21.i386.qcow2
file format: qcow2
virtual size: 3.0G (3221225472 bytes)
disk size: 162M
cluster_size: 65536
Format specific information:
    compat: 0.10

root@zetawiki:~# qemu-img check Fedora-Cloud-Base-20141203-21.i386.qcow2
No errors were found on the image.
7167/49152 = 14.58% allocated, 97.60% fragmented, 96.76% compressed clusters
Image end offset: 169410560

root@zetawiki:~# vbox-img info --filename Fedora-Cloud-Base-20141203-21.i386.qcow2 
--- Dumping VD Disk, Images=1
Dumping VD image "Fedora-Cloud-Base-20141203-21.i386.qcow2" (Backend=QCOW)
Header: Geometry PCHS=0/0/0 LCHS=0/0/0 cSector=6291456

2 같이 보기

• 디스크 이미지
• .qed
• QEMU
• 카피-온-라이트 COW
• qcow2 샘플 다운로드
• qcow2 파일 검사

3 참고 자료

• https://en.wikipedia.org/wiki/Qcow