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From: Han Han <hhan@redhat.com>
To: qemu-devel@nongnu.org
Cc: Han Han <hhan@redhat.com>
Subject: [PATCH] qemu-img.texi: Describe data_file and data_file_raw
Date: Fri, 18 Oct 2019 17:59:24 +0800	[thread overview]
Message-ID: <20191018095924.4409-1-hhan@redhat.com> (raw)

https://bugzilla.redhat.com/show_bug.cgi?id=1763105

Signed-off-by: Han Han <hhan@redhat.com>
---
 qemu-img.texi | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/qemu-img.texi b/qemu-img.texi
index b5156d6316..44596c2d93 100644
--- a/qemu-img.texi
+++ b/qemu-img.texi
@@ -763,6 +763,16 @@ file which is COW and has data blocks already, it couldn't be changed to NOCOW
 by setting @code{nocow=on}. One can issue @code{lsattr filename} to check if
 the NOCOW flag is set or not (Capital 'C' is NOCOW flag).
 
+@item data_file
+File name of data file that is stored in the image and used as a default for
+opening the image. If the option is used, qcow2 file only stores the metadata
+of the image.
+
+@item data_file_raw
+This option requires @option{data_file}. If this option is set to @code{on},
+qemu will always keep the external data file consistent as a standalone
+read-only raw image. Default value is @code{off}.
+
 @end table
 
 @item Other
-- 
2.20.1



             reply	other threads:[~2019-10-18 10:00 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-10-18  9:59 Han Han [this message]
2019-10-18 14:13 ` [PATCH] qemu-img.texi: Describe data_file and data_file_raw Eric Blake
2019-10-18 20:58 ` John Snow
2019-10-21  1:06   ` Han Han

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