diff options
Diffstat (limited to 'qemu-nbd.texi')
-rw-r--r-- | qemu-nbd.texi | 38 |
1 files changed, 19 insertions, 19 deletions
diff --git a/qemu-nbd.texi b/qemu-nbd.texi index 5331d697c4..0027841ecb 100644 --- a/qemu-nbd.texi +++ b/qemu-nbd.texi @@ -19,60 +19,60 @@ Export a QEMU disk image using the NBD protocol. @table @option @item -p, --port=@var{port} -port to listen on (default @samp{10809}) +The TCP port to listen on (default @samp{10809}) @item -o, --offset=@var{offset} -offset into the image +The offset into the image @item -b, --bind=@var{iface} -interface to bind to (default @samp{0.0.0.0}) +The interface to bind to (default @samp{0.0.0.0}) @item -k, --socket=@var{path} Use a unix socket with path @var{path} @item -f, --format=@var{fmt} -force the use of the block driver for format @var{fmt} instead of +Force the use of the block driver for format @var{fmt} instead of auto-detecting @item -r, --read-only -export read-only +Export the disk as read-only @item -P, --partition=@var{num} -only expose partition @var{num} +Only expose partition @var{num} @item -s, --snapshot -use @var{filename} as an external snapshot, create a temporary +Use @var{filename} as an external snapshot, create a temporary file with backing_file=@var{filename}, redirect the write to the temporary one @item -l, --load-snapshot=@var{snapshot_param} -load an internal snapshot inside @var{filename} and export it +Load an internal snapshot inside @var{filename} and export it as an read-only device, @var{snapshot_param} format is 'snapshot.id=[ID],snapshot.name=[NAME]' or '[ID_OR_NAME]' @item -n, --nocache @itemx --cache=@var{cache} -set cache mode to be used with the file. See the documentation of +The cache mode to be used with the file. See the documentation of the emulator's @code{-drive cache=...} option for allowed values. @item --aio=@var{aio} -choose asynchronous I/O mode between @samp{threads} (the default) +Set the asynchronous I/O mode between @samp{threads} (the default) and @samp{native} (Linux only). @item --discard=@var{discard} -controls whether @dfn{discard} (also known as @dfn{trim} or @dfn{unmap}) +Control whether @dfn{discard} (also known as @dfn{trim} or @dfn{unmap}) requests are ignored or passed to the filesystem. @var{discard} is one of @samp{ignore} (or @samp{off}), @samp{unmap} (or @samp{on}). The default is @samp{ignore}. @item --detect-zeroes=@var{detect-zeroes} -enables the automatic conversion of plain zero writes by the OS to +Control the automatic conversion of plain zero writes by the OS to driver-specific optimized zero write commands. @var{detect-zeroes} is one of @samp{off}, @samp{on} or @samp{unmap}. @samp{unmap} converts a zero write to an unmap operation and can only be used if @var{discard} is set to @samp{unmap}. The default is @samp{off}. @item -c, --connect=@var{dev} -connect @var{filename} to NBD device @var{dev} +Connect @var{filename} to NBD device @var{dev} @item -d, --disconnect -disconnect the specified device +Disconnect the device @var{dev} @item -e, --shared=@var{num} -device can be shared by @var{num} clients (default @samp{1}) +Allow up to @var{num} clients to share the device (default @samp{1}) @item -t, --persistent -don't exit on the last connection +Don't exit on the last connection @item -v, --verbose -display extra debugging information +Display extra debugging information @item -h, --help -display this help and exit +Display this help and exit @item -V, --version -output version information and exit +Display version information and exit @end table @c man end |