diff options
Diffstat (limited to 'qemu-options.hx')
| -rw-r--r-- | qemu-options.hx | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/qemu-options.hx b/qemu-options.hx index 2832d82148..51ff726490 100644 --- a/qemu-options.hx +++ b/qemu-options.hx @@ -440,6 +440,8 @@ These options have the same definition as they have in @option{-hdachs}. @var{cache} is "none", "writeback", "unsafe", "directsync" or "writethrough" and controls how the host cache is used to access block data. @item aio=@var{aio} @var{aio} is "threads", or "native" and selects between pthread based disk I/O and native Linux AIO. +@item discard=@var{discard} +@var{discard} is one of "ignore" (or "off") or "unmap" (or "on") and controls whether @dfn{discard} (also known as @dfn{trim} or @dfn{unmap}) requests are ignored or passed to the filesystem. Some machine types may not support discard requests. @item format=@var{format} Specify which disk @var{format} will be used rather than detecting the format. Can be used to specifiy format=raw to avoid interpreting |