Create: default to bitmap=internal for large arrays.

Here, "large" means components are 100G or more.  It is
usually beneficial to have write-intent bitmaps on such arrays.
They can be suppressed with --bitmap=none

Signed-off-by: NeilBrown <neilb@suse.de>

1 files changed, 2 insertions, 0 deletions

diff --git a/Build.c b/Build.c
index 5c97d630..317404af 100644
--- a/Build.c
+++ b/Build.c
@@ -154,6 +154,8 @@ int Build(char *mddev, struct mddev_dev *devlist,
 		goto abort;
 	}
 
+	if (s->bitmap_file && strcmp(s->bitmap_file, "none") == 0)
+		s->bitmap_file = NULL;
 	if (s->bitmap_file && s->level <= 0) {
 		pr_err("bitmaps not meaningful with level %s\n",
 			map_num(pers, s->level)?:"given");