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[Qemu-devel] [PATCH v2 2/3] qemu-nbd: Minor texi updates

From: Sitsofe Wheeler
Subject: [Qemu-devel] [PATCH v2 2/3] qemu-nbd: Minor texi updates
Date: Tue, 5 Jan 2016 07:33:31 +0000

- Change some spacing.
- Add disconnect usage to synopsis.
- Highlight the command and its options in the synopsis.
- Fix up the grammar in the description.
- Move filename variable description out of the option table.
- Add a description of the dev variable.
- Remove duplicate entry for --format.
- Reword --discard documentation.
- Add --detect-zeroes documentation.
- Add reference to qemu man page to see also section.

Signed-off-by: Sitsofe Wheeler <address@hidden>
 qemu-nbd.texi | 34 ++++++++++++++++++++++------------
 1 file changed, 22 insertions(+), 12 deletions(-)

diff --git a/qemu-nbd.texi b/qemu-nbd.texi
index 26cc985..5331d69 100644
--- a/qemu-nbd.texi
+++ b/qemu-nbd.texi
@@ -1,19 +1,23 @@
 @c man begin SYNOPSIS
-usage: qemu-nbd [OPTION]...  @var{filename}
address@hidden [OPTION]... @var{filename}
address@hidden @option{-d} @var{dev}
 @c man end
 @end example
 @c man begin DESCRIPTION
-Export QEMU disk image using NBD protocol.
+Export a QEMU disk image using the NBD protocol.
 @c man end
 @c man begin OPTIONS
address@hidden is a disk image filename.
address@hidden is an NBD device.
 @table @option
address@hidden @var{filename}
-is a disk image filename
 @item -p, address@hidden
 port to listen on (default @samp{10809})
 @item -o, address@hidden
@@ -22,8 +26,9 @@ offset into the image
 interface to bind to (default @samp{})
 @item -k, address@hidden
 Use a unix socket with path @var{path}
address@hidden -f, address@hidden
-Set image format as @var{format}
address@hidden -f, address@hidden
+force the use of the block driver for format @var{fmt} instead of
 @item -r, --read-only
 export read-only
 @item -P, address@hidden
@@ -44,17 +49,22 @@ the emulator's @code{-drive cache=...} option for allowed 
 choose asynchronous I/O mode between @samp{threads} (the default)
 and @samp{native} (Linux only).
 @item address@hidden
-toggles whether @dfn{discard} (also known as @dfn{trim} or @dfn{unmap})
-requests are ignored or passed to the filesystem.  The default is no
+controls whether @dfn{discard} (also known as @dfn{trim} or @dfn{unmap})
+requests are ignored or passed to the filesystem.  @var{discard} is one of
address@hidden (or @samp{off}), @samp{unmap} (or @samp{on}).  The default is
address@hidden address@hidden
+enables the automatic conversion of plain zero writes by the OS to
+driver-specific optimized zero write commands.  @var{detect-zeroes} is one of
address@hidden, @samp{on} or @samp{unmap}.  @samp{unmap}
+converts a zero write to an unmap operation and can only be used if
address@hidden is set to @samp{unmap}.  The default is @samp{off}.
 @item -c, address@hidden
 connect @var{filename} to NBD device @var{dev}
 @item -d, --disconnect
 disconnect the specified device
 @item -e, address@hidden
 device can be shared by @var{num} clients (default @samp{1})
address@hidden -f, address@hidden
-force block driver for format @var{fmt} instead of auto-detecting
 @item -t, --persistent
 don't exit on the last connection
 @item -v, --verbose
@@ -79,7 +89,7 @@ warranty; not even for MERCHANTABILITY or FITNESS FOR A 
 @c man end
 @c man begin SEEALSO
+qemu(1), qemu-img(1)
 @c man end
 @end ignore

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