Add failfast support.

Allow per-device "failfast" flag to be set when creating an
array or adding devices to an array.

When re-adding a device which had the failfast flag, it can be removed
using --nofailfast.

failfast status is printed in --detail and --examine output.

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

1 files changed, 2 insertions, 0 deletions

diff --git a/Create.c b/Create.c
index 1594a391..bd114eab 100644
--- a/Create.c
+++ b/Create.c
@@ -890,6 +890,8 @@ int Create(struct supertype *st, char *mddev,
 
 				if (dv->writemostly == 1)
 					inf->disk.state |= (1<<MD_DISK_WRITEMOSTLY);
+				if (dv->failfast == 1)
+					inf->disk.state |= (1<<MD_DISK_FAILFAST);
 
 				if (have_container)
 					fd = -1;