The src_cache option (-T) specifies the cache mode for backing files.
It applies both the image's old backing file as well as the new backing
file:
ret = bdrv_open(&bs_old_backing, backing_name, NULL, NULL, src_flags,
old_backing_drv, &local_err);
if (ret) {
...
}
if (out_baseimg[0]) {
bs_new_backing = bdrv_new("new_backing", &error_abort);
ret = bdrv_open(&bs_new_backing, out_baseimg, NULL, NULL, src_flags,
new_backing_drv, &local_err);
if (ret) {
...
}
}
The documentation only mentions the new backing file but it really
applies to both.
Suggested-by: Jeff Nelson <[email protected]>
Signed-off-by: Stefan Hajnoczi <[email protected]>
Reviewed-by: Max Reitz <[email protected]>
---
qemu-img.texi | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/qemu-img.texi b/qemu-img.texi
index 4380d56..cc4668e 100644
--- a/qemu-img.texi
+++ b/qemu-img.texi
@@ -341,7 +341,7 @@ string), then the image is rebased onto no backing file
(i.e. it will exist
independently of any backing file).
@var{cache} specifies the cache mode to be used for @var{filename}, whereas
-@var{src_cache} specifies the cache mode for reading the new backing file.
+@var{src_cache} specifies the cache mode for reading backing files.
There are two different modes in which @code{rebase} can operate:
@table @option
--
1.9.3
