Usage: qemu-io [OPTIONS]... [-c STRING]... [file]
QEMU Disk exerciser

  --object OBJECTDEF   define an object such as 'secret' for
                       passwords and/or encryption keys
  --image-opts         treat file as option string
  -c, --cmd STRING     execute command with its arguments
                       from the given string
  -f, --format FMT     specifies the block driver to use
  -r, --read-only      export read-only
  -s, --snapshot       use snapshot file
  -n, --nocache        disable host cache, short for -t none
  -C, --copy-on-read   enable copy-on-read
  -m, --misalign       misalign allocations for O_DIRECT
  -k, --native-aio     use kernel AIO implementation
                       (Linux only, prefer use of -i)
  -i, --aio=MODE       use AIO mode (threads, native or io_uring)
  -t, --cache=MODE     use the given cache mode for the image
  -d, --discard=MODE   use the given discard mode for the image
  -T, --trace [[enable=]<pattern>][,events=<file>][,file=<file>]
                       specify tracing options
                       see qemu-img(1) man page for full description
  -U, --force-share    force shared permissions
  -h, --help           display this help and exit
  -V, --version        output version information and exit

See 'qemu-io -c help' for information on available commands.

See <https://qemu.org/contribute/report-a-bug> for how to report bugs.
More information on the QEMU project at <https://qemu.org>.