[sheepdog] [PATCH v2 1/3] md: create .stale for newly plugged disk

[Liu Yuan]

From: Liu Yuan <tailai.ly at taobao.com>

Signed-off-by: Liu Yuan <tailai.ly at taobao.com>
---
 sheep/md.c |    7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/sheep/md.c b/sheep/md.c
index eaf7c4a..0bfadd0 100644
--- a/sheep/md.c
+++ b/sheep/md.c
@@ -254,12 +254,19 @@ out:
 static uint64_t init_path_space(char *path)
 {
 	uint64_t size;
+	char stale[PATH_MAX];
 
 	if (!is_xattr_enabled(path)) {
 		sd_iprintf("multi-disk support need xattr feature");
 		goto broken_path;
 	}
 
+	snprintf(stale, PATH_MAX, "%s/.stale", path);
+	if (xmkdir(stale, sd_def_dmode) < 0) {
+		sd_eprintf("can't mkdir for %s, %m", stale);
+		goto broken_path;
+	}
+
 	if (getxattr(path, MDNAME, &size, MDSIZE) < 0) {
 		if (errno == ENODATA) {
 			goto create;
-- 
1.7.9.5