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[Qemu-trivial] [PATCH 2/2] qemu-nbd: Minor texi updates
From: |
Sitsofe Wheeler |
Subject: |
[Qemu-trivial] [PATCH 2/2] qemu-nbd: Minor texi updates |
Date: |
Wed, 30 Dec 2015 19:57:44 +0000 |
User-agent: |
Mutt/1.5.21 (2010-09-15) |
- Change some spacing.
- Remove duplicate entry for --format.
- Reword --discard documentation.
- Add --detect-zeroes documentation.
Signed-off-by: Sitsofe Wheeler <address@hidden>
---
qemu-nbd.texi | 22 ++++++++++++++--------
1 file changed, 14 insertions(+), 8 deletions(-)
diff --git a/qemu-nbd.texi b/qemu-nbd.texi
index 26cc985..ac4e613 100644
--- a/qemu-nbd.texi
+++ b/qemu-nbd.texi
@@ -1,6 +1,6 @@
@example
@c man begin SYNOPSIS
-usage: qemu-nbd [OPTION]... @var{filename}
+usage: qemu-nbd [OPTION]... @var{filename}
@c man end
@end example
@@ -22,8 +22,9 @@ offset into the image
interface to bind to (default @samp{0.0.0.0})
@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
+auto-detecting
@item -r, --read-only
export read-only
@item -P, address@hidden
@@ -44,17 +45,22 @@ the emulator's @code{-drive cache=...} option for allowed
values.
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
-(@samp{--discard=ignore}).
+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 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
--
2.4.3
--
Sitsofe | http://sucs.org/~sits/