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19.3. Disk Options

This section provides information about disk options.

-drive <option>[,<option>[,<option>[,...]]]

Supported with the following options:

readonly[on|off]
werror[enospc|report|stop|ignore]
rerror[report|stop|ignore]
id=<id>
Id of the drive has the following limitation for if=none:
- IDE disk has to have <id> in following format: drive-ide0-<BUS>-<UNIT>
  Example of correct format:
  -drive if=none,id=drive-ide0-<BUS>-<UNIT>,... -device ide-drive,drive=drive-ide0-<BUS>-<UNIT>,bus=ide.<BUS>,unit=<UNIT>
file=<file>
Value of <file> is parsed with the following rules:
- Passing floppy device as <file> is not supported.
- Passing cd-rom device as <file> is supported only with cdrom media type (media=cdrom) and only as IDE drive (either if=ide or if=none + -device ide-drive).
- If <file> is neither block nor character device, it must not contain ':'.
if=<interface>
The following interfaces are supported: none, ide, virtio, floppy.
index=<index>
media=<media>
cache=<cache>
Supported values: none, writeback or writethrough.
copy-on-read=[on|off]
snapshot=[yes|no]
serial=<serial>
aio=<aio>
format=<format>
This option is not required and can be omitted. However, this is not recommended for raw images because it represents security risk. Supported formats are:
- qcow2
- raw

-boot [order=<drives>][,menu=[on|off]]

-snapshot