Add --update=force-no-bbl.

This forcibly removed the bad-block log.  There can be situations where it is hard to
remove bad blocks by writing to them - partiularly on RAID5.

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

1 files changed, 5 insertions, 0 deletions

diff --git a/super1.c b/super1.c
index 2df590e..10e0065 100644
--- a/super1.c
+++ b/super1.c
@@ -1282,6 +1282,11 @@ static int update_super1(struct supertype *st, struct mdinfo *info,
 			sb->bblog_shift = 0;
 			sb->bblog_offset = 0;
 		}
+	} else if (strcmp(update, "force-no-bbl") == 0) {
+		sb->feature_map &= ~ __cpu_to_le32(MD_FEATURE_BAD_BLOCKS);
+		sb->bblog_size = 0;
+		sb->bblog_shift = 0;
+		sb->bblog_offset = 0;
 	} else if (strcmp(update, "name") == 0) {
 		if (info->name[0] == 0)
 			sprintf(info->name, "%d", info->array.md_minor);