os/bluestore/BlueStore: better error msg for bdev label check

Signed-off-by: Sage Weil <sage@redhat.com>

diff --git a/src/os/bluestore/BlueStore.cc b/src/os/bluestore/BlueStore.cc
index e77fdf53e6fa7cf0d2a256a24a9f7f732235a23f..e7f107263117b599cc8c8559c45ed8a07d306e0c 100644 (file)
--- a/src/os/bluestore/BlueStore.cc
+++ b/src/os/bluestore/BlueStore.cc
@@ -829,6 +829,8 @@ int BlueStore::_read_bdev_label(string path, bluestore_bdev_label_t *label)
     ::decode(expected_crc, p);
   }
   catch (buffer::error& e) {
+    derr << __func__ << " unable to decode label at offset " << p.get_off()
+        << dendl;
     return -EINVAL;
   }
   if (crc != expected_crc) {