[PATCH 2/2] btrfs-progs: Replace the overkill assert with normal error message.

[Qu Wenruo <quwenruo@cn.fujitsu.com>]

When 'btrfs replace status' encounters an unknown dev replace status, it
will cause an assert, which is somewhat overkilled and can be replaced
with a normal error message.

Signed-off-by: Qu Wenruo <quwenruo@cn.fujitsu.com>
---
 cmds-replace.c | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/cmds-replace.c b/cmds-replace.c
index 645dc98..9eb981b 100644
--- a/cmds-replace.c
+++ b/cmds-replace.c
@@ -449,7 +449,10 @@ static int print_replace_status(int fd, const char *path, int once)
 			break;
 		default:
 			prevent_loop = 1;
-			assert(0);
+			fprintf(stderr,
+				"Unknown btrfs dev replace status:%llu",
+				status->replace_state);
+			ret = -EINVAL;
 			break;
 		}
 
@@ -459,9 +462,9 @@ static int print_replace_status(int fd, const char *path, int once)
 				(unsigned long long)status->num_write_errors,
 				(unsigned long long)
 				 status->num_uncorrectable_read_errors);
-		if (once || prevent_loop) {
+		if (once || prevent_loop || ret) {
 			printf("\n");
-			return 0;
+			return ret;
 		}
 
 		fflush(stdout);
-- 
1.9.2