Try to use copy offloading to move data from source image to target. This option improves performance,īut is only recommended for preallocated devices like host devices or other Number of parallel coroutines for the convert process -W ¶Īllow out-of-order writes to the destination. Skip the creation of the target volume -m ¶ Parameters to convert subcommand: -bitmaps ¶Īdditionally copy all persistent bitmaps from the top layer of the source -n ¶ Strict mode - fail on different image size or sector allocation Specifies the cache mode that should be used with the source file(s). The documentation of the emulator’s -drive cache=. Specifies the cache mode that should be used with the (destination) file. Indicates the consecutive number of bytes that must contain only zerosįor qemu-img to create a sparse image during conversion. Quiet mode - do not print any output (except errors). Progress is reported when the process receives a SIGUSR1 or If the -p option is not used for a command that supports it, the p ¶ĭisplay progress bar (compare, convert and rebase commands only). With or without a command, shows help and lists the supported formats.
Indicates that target image must be compressed (qcow format only). Will enumerate information about backing files in a disk image chain. Note that this could produce inconsistent results because ofĬoncurrent metadata changes, etc. Get the image information (with ‘info’ subcommand) when the image is used by a Other QEMU processes to open it in write mode. If specified, qemu-img will open the image in shared mode, allowing This parameter is mutuallyĮxclusive with the -O parameters.
Indicates that the OUTPUT_FILENAME parameter(s) are to be interpreted asĪ full option string, not a plain filename. This parameter is mutuallyĮxclusive with the -f parameter. Indicates that the source FILENAME parameter is to be interpreted as aįull option string, not a plain filename. Object type is a secret, which is used to supply passwords and/or
Manual page for a description of the object properties. Is a QEMU user creatable object definition. SNAPSHOT_PARAM is param used for internal snapshot, format is Use -o ? for an overview of the options supportedīy the used format or see the format descriptions below for details. OPTIONS is a comma separated list of format specific options in a
OUTPUT_FILENAME is the destination disk image filename. K (kilobyte, 1024) M (megabyte, 1024k) and G (gigabyte,ġ024M) and T (terabyte, 1024G) are supported. See below for a description of the supported disk formats. It is guessed automatically in mostĬases. ] FILENAME BITMAP ¶ check ] FILENAME ¶ commit FILENAME ¶ compare FILENAME1 FILENAME2 ¶ convert ] FILENAME ] OUTPUT_FILENAME ¶ create FILENAME ¶ dd if=INPUT of=OUTPUT ¶ info FILENAME ¶ map FILENAME ¶ measure FILENAME] ¶ snapshot FILENAME ¶ rebase -b BACKING_FILE FILENAME ¶ resize FILENAME SIZE ¶įMT is the disk image format. The following commands are supported: amend -o OPTIONS FILENAME ¶ bench FILENAME ¶ bitmap (-merge SOURCE | -add | -remove | -clear | -enable | -disable).
This option is only available if QEMU has been compiled with