Suggested-by: Paolo Bonzini <pbonz...@redhat.com>
Reviewed-by: Paolo Bonzini <pbonz...@redhat.com>
Signed-off-by: Peter Lieven <p...@kamp.de>
---
qemu-img.c | 4 ++--
qemu-img.texi | 2 +-
2 files changed, 3 insertions(+), 3 deletions(-)
diff --git a/qemu-img.c b/qemu-img.c
index 9bb1f6f..8b5f3da 100644
--- a/qemu-img.c
+++ b/qemu-img.c
@@ -100,7 +100,7 @@ static void help(void)
" '-h' with or without a command shows this help and lists the
supported formats\n"
" '-p' show progress of command (only certain commands)\n"
" '-q' use Quiet mode - do not print any output (except errors)\n"
- " '-S' indicates the consecutive number of bytes (defaults to 4k)
that must\n"
+ " '-S' indicates the consecutive number of bytes (defaults to 64k)
that must\n"
" contain only zeros for qemu-img to create a sparse image
during\n"
" conversion. If the number of bytes is 0, the source will
not be scanned for\n"
" unallocated or zero sectors, and the destination image will
always be\n"
@@ -1141,7 +1141,7 @@ static int img_convert(int argc, char **argv)
QEMUOptionParameter *out_baseimg_param;
char *options = NULL;
const char *snapshot_name = NULL;
- int min_sparse = 8; /* Need at least 4k of zeros for sparse detection */
+ int min_sparse = 128; /* Need at least 64k of zeros for sparse detection */
bool quiet = false;
Error *local_err = NULL;
diff --git a/qemu-img.texi b/qemu-img.texi
index da36975..4add6ce 100644
--- a/qemu-img.texi
+++ b/qemu-img.texi
@@ -193,7 +193,7 @@ Image conversion is also useful to get smaller image when
using a
growable format such as @code{qcow} or @code{cow}: the empty sectors
are detected and suppressed from the destination image.
-@var{sparse_size} indicates the consecutive number of bytes (defaults to 4k)
+@var{sparse_size} indicates the consecutive number of bytes (defaults to 64k)
that must contain only zeros for qemu-img to create a sparse image during
conversion. If @var{sparse_size} is 0, the source will not be scanned for
unallocated or zero sectors, and the destination image will always be
--
1.7.9.5
