[v2] qemu-img.texi: Describe data_file and data_file_raw
diff mbox series

Message ID 20191021010714.24060-1-hhan@redhat.com
State New
Headers show
  • [v2] qemu-img.texi: Describe data_file and data_file_raw
Related show

Commit Message

Han Han Oct. 21, 2019, 1:07 a.m. UTC

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

diff mbox series

diff --git a/qemu-img.texi b/qemu-img.texi
index b5156d6316..983c6122f8 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
+for 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