[sheepdog] [PATCH] sheep: some debug output enhancement

[Liu Yuan]

- do_epoch_log_read() will flood the ERROR message because epoch file not exist
  but this is a valid case when node have some epoch missing. So change it to
  sd_debug.

- enhance md_move_object() for better debug

Signed-off-by: Liu Yuan <namei.unix at gmail.com>
---
 sheep/md.c    | 2 +-
 sheep/store.c | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/sheep/md.c b/sheep/md.c
index 1c065b7..e535454 100644
--- a/sheep/md.c
+++ b/sheep/md.c
@@ -497,7 +497,7 @@ static int md_move_object(uint64_t oid, const char *old, const char *new)
 
 	ret = strbuf_read(&buf, fd, sz);
 	if (ret != sz) {
-		sd_err("failed to read %s, %d", old, ret);
+		sd_err("failed to read %s, size %zu, %d, %m", old, sz, ret);
 		ret = -1;
 		goto out_close;
 	}
diff --git a/sheep/store.c b/sheep/store.c
index d74be4c..c20b381 100644
--- a/sheep/store.c
+++ b/sheep/store.c
@@ -51,7 +51,7 @@ static int do_epoch_log_read(uint32_t epoch, struct sd_node *nodes, int len,
 	snprintf(path, sizeof(path), "%s%08u", epoch_path, epoch);
 	fd = open(path, O_RDONLY);
 	if (fd < 0) {
-		sd_err("failed to open epoch %"PRIu32" log, %m", epoch);
+		sd_debug("failed to open epoch %"PRIu32" log, %m", epoch);
 		goto err;
 	}
 
-- 
1.8.1.2