[dm-devel] [PATCH 11/15] dm stripe: support copy

[Mikulas Patocka]

Support the copy operation for the stripe target.

In stripe_merge, we verify that the underlying device supports copy. If it
doesn't, we can fail fast without any bio being contructed.

Signed-off-by: Mikulas Patocka <mpatocka at redhat.com>

---
 drivers/md/dm-stripe.c |    1 +
 1 file changed, 1 insertion(+)

Index: linux-4.3-rc1/drivers/md/dm-stripe.c
===================================================================
--- linux-4.3-rc1.orig/drivers/md/dm-stripe.c	2015-09-14 16:06:36.000000000 +0200
+++ linux-4.3-rc1/drivers/md/dm-stripe.c	2015-09-14 16:23:01.000000000 +0200
@@ -169,6 +169,7 @@ static int stripe_ctr(struct dm_target *
 	ti->num_flush_bios = stripes;
 	ti->num_discard_bios = stripes;
 	ti->num_write_same_bios = stripes;
+	ti->copy_supported = 1;
 
 	sc->chunk_size = chunk_size;
 	if (chunk_size & (chunk_size - 1))