Friday, July 9, 2010

qcow2 - QEMU's Copy-on-write

qcow2 is a QEMU disk image format. As its name implies, it is a Copy-on-write format. QEMU can use a base image which is read-only, and store all writes to the qcow2 image.

Qcow helps in taking vm snapshots - or any file system snapshots.

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