[Qemu-devel] [PATCHv3 1.8 8/9] qemu-img: increase min_sparse to 128 sectors (64kb)

[Peter Lieven <pl@kamp.de>]

Suggested-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Peter Lieven <pl@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