qemu-img version 2.10.0(Debian 1:2.10+dfsg-0ubuntu1) Copyright (c) 2003-2017 Fabrice Bellard and the QEMU Project developers

qemu-img version 2.10.0(Debian 1:2.10+dfsg-0ubuntu1) Copyright (c) 2003-2017 Fabrice Bellard and the QEMU Project developers usage: qemu-img [standard options] command [command options] QEMU disk image utility '-h', '--help' display this help and exit '-V', '--version' output version information and exit '-T', '--trace' [[enable=]<pattern>][,events=<file>][,file=<file>] specify tracing options Command syntax: amend [--object objectdef] [--image-opts] [-p] [-q] [-f fmt] [-t cache] -o options filename bench [-c count] [-d depth] [-f fmt] [--flush-interval=flush_interval] [-n] [--no-drain] [-o offset] [--pattern=pattern] [-q] [-s buffer_size] [-S step_size] [-t cache] [-w] [-U] filename check [-q] [--object objectdef] [--image-opts] [-f fmt] [--output=ofmt] [-r [leaks | all]] [-T src_cache] [-U] filename commit [-q] [--object objectdef] [--image-opts] [-f fmt] [-t cache] [-b base] [-d] [-p] filename compare [--object objectdef] [--image-opts] [-f fmt] [-F fmt] [-T src_cache] [-p] [-q] [-s] [-U] filename1 filename2 convert [--object objectdef] [--image-opts] [--target-image-opts] [-U] [-c] [-p] [-q] [-n] [-f fmt] [-t cache] [-T src_cache] [-O output_fmt] [-B backing_file] [-o options] [-s snapshot_id_or_name] [-l snapshot_param] [-S sparse_size] [-m num_coroutines] [-W] filename [filename2 [...]] output_filename create [-q] [--object objectdef] [-f fmt] [-b backing_file] [-F backing_fmt] [-u] [-o options] filename [size] dd [--image-opts] [-U] [-f fmt] [-O output_fmt] [bs=block_size] [count=blocks] [skip=blocks] if=input of=output info [--object objectdef] [--image-opts] [-f fmt] [--output=ofmt] [--backing-chain] [-U] filename map [--object objectdef] [--image-opts] [-f fmt] [--output=ofmt] [-U] filename measure [--output=ofmt] [-O output_fmt] [-o options] [--size N | [--object objectdef] [--image-opts] [-f fmt] [-l snapshot_param] filename] snapshot [--object objectdef] [--image-opts] [-U] [-q] [-l | -a snapshot | -c snapshot | -d snapshot] filename rebase [--object objectdef] [--image-opts] [-U] [-q] [-f fmt] [-t cache] [-T src_cache] [-p] [-u] -b backing_file [-F backing_fmt] filename resize [--object objectdef] [--image-opts] [-q] filename [+ | -]size Command parameters: 'filename' is a disk image filename 'objectdef' is a QEMU user creatable object definition. See the qemu(1) manual page for a description of the object properties. The most common object type is a 'secret', which is used to supply passwords and/or encryption keys. 'fmt' is the disk image format. It is guessed automatically in most cases 'cache' is the cache mode used to write the output disk image, the valid options are: 'none', 'writeback' (default, except for convert), 'writethrough', 'directsync' and 'unsafe' (default for convert) 'src_cache' is the cache mode used to read input disk images, the valid options are the same as for the 'cache' option 'size' is the disk image size in bytes. Optional suffixes 'k' or 'K' (kilobyte, 1024), 'M' (megabyte, 1024k), 'G' (gigabyte, 1024M), 'T' (terabyte, 1024G), 'P' (petabyte, 1024T) and 'E' (exabyte, 1024P) are supported. 'b' is ignored. 'output_filename' is the destination disk image filename 'output_fmt' is the destination format 'options' is a comma separated list of format specific options in a name=value format. Use -o ? for an overview of the options supported by the used format 'snapshot_param' is param used for internal snapshot, format is 'snapshot.id=[ID],snapshot.name=[NAME]', or '[ID_OR_NAME]' 'snapshot_id_or_name' is deprecated, use 'snapshot_param' instead '-c' indicates that target image must be compressed (qcow format only) '-u' allows unsafe backing chains. For rebasing, it is assumed that old and new backing file match exactly. The image doesn't need a working backing file before rebasing in this case (useful for renaming the backing file). For image creation, allow creating without attempting to open the backing file. '-h' with or without a command shows this help and lists the supported formats '-p' show progress of command (only certain commands) '-q' use Quiet mode - do not print any output (except errors) '-S' indicates the consecutive number of bytes (defaults to 4k) that must contain only zeros for qemu-img to create a sparse image during conversion. If the number of bytes is 0, the source will not be scanned for unallocated or zero sectors, and the destination image will always be fully allocated '--output' takes the format in which the output must be done (human or json) '-n' skips the target volume creation (useful if the volume is created prior to running qemu-img) Parameters to check subcommand: '-r' tries to repair any inconsistencies that are found during the check. '-r leaks' repairs only cluster leaks, whereas '-r all' fixes all kinds of errors, with a higher risk of choosing the wrong fix or hiding corruption that has already occurred. Parameters to convert subcommand: '-m' specifies how many coroutines work in parallel during the convert process (defaults to 8) '-W' allow to write to the target out of order rather than sequential Parameters to snapshot subcommand: 'snapshot' is the name of the snapshot to create, apply or delete '-a' applies a snapshot (revert disk to saved state) '-c' creates a snapshot '-d' deletes a snapshot '-l' lists all snapshots in the given image Parameters to compare subcommand: '-f' first image format '-F' second image format '-s' run in Strict mode - fail on different image size or sector allocation Parameters to dd subcommand: 'bs=BYTES' read and write up to BYTES bytes at a time (default: 512) 'count=N' copy only N input blocks 'if=FILE' read from FILE 'of=FILE' write to FILE 'skip=N' skip N bs-sized blocks at the start of input Supported formats: blkdebug blkreplay blkverify bochs cloop dmg file ftp ftps host_cdrom host_device http https iscsi iser luks nbd null-aio null-co parallels qcow qcow2 qed quorum raw rbd replication sheepdog vdi vhdx vmdk vpc vvfat See <http://qemu.org/contribute/report-a-bug> for how to report bugs. More information on the QEMU project at <http://qemu.org>.