Name of the initialization vector generator algorithm. Name of the cipher algorithm and key length. ( encrypt.format=luks) or encryption key ( encrypt.format=aes). Provides the ID of a secret object that contains the passphrase Remains in the command line utilities, for the purposes of data liberationĪnd interoperability with old versions of QEMU. The use of this is no longer supported in system emulators. Though even this is ineffective with many modern storage technologies. Original file must then be securely erased using a program like shred, The files mustīe cloned, using a different encryption passphrase in the new file.
A poorlyĬhosen or short passphrase will compromise the security of the encryption.
full mode preallocates spaceįor image by writing data to underlying storage. falloc mode preallocates space for image byĬalling posix_fallocate(). Preallocation mode (allowed values: off, falloc,įull).
Use qemu-img info to know the real size used by the Linux or NTFS on Windows), then only the written sectors will reserve If yourįile system supports holes (for example in ext2 or ext3 on This format has the advantage ofīeing simple and easily exportable to all other emulators. This section describes each format and the options that are supported for it.
Qemu-img create and qemu-img convert using the -o option. Older QEMU versions or other hypervisors.ĭepending on the image format, different options can be passed to Raw and qcow2 as well as formats that are supported for compatibility with QEMU supports many image file formats that can be used with VMs as well as withĪny of the tools (like qemu-img). State is not saved or restored properly (in particular USB).
Info snapshots) and a snapshot of every writable disk image. System Emulation Guest Hardware Specifications.System Emulation Management and Interoperability.Managing device boot order with bootindex properties.Keys in the character backend multiplexer.