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Revision de90930a

IDde90930a0c45760e7523138fac57ff07312bf51d

Added by Stefan Hajnoczi over 10 years ago

block: add drive_backup HMP command

Make "drive_backup" available on the HMP monitor:

drive_backup [-n] [-f] device target [format]

The -n flag requests QEMU to reuse the image found in new-image-file,
instead of recreating it from scratch.

The -f flag requests QEMU to copy the whole disk, so that the result
does not need a backing file. Note that this flag must currently be
passed since the other sync modes ('none' and 'top') have not been
implemented yet. Requiring it ensures that "drive_backup" behaves like
"drive_mirror".

Signed-off-by: Stefan Hajnoczi <>
Reviewed-by: Eric Blake <>
Signed-off-by: Kevin Wolf <>

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