filejournal: improve debug error messge

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

diff --git a/src/os/FileJournal.cc b/src/os/FileJournal.cc
index 6f28450fa1daee575b91de4ca70a71f8fa5d4684..0d9d62a227257f40616307ec38edb21977eda855 100644 (file)
--- a/src/os/FileJournal.cc
+++ b/src/os/FileJournal.cc
@@ -1084,7 +1084,7 @@ void FileJournal::wrap_read_bl(off64_t& pos, int64_t olen, bufferlist& bl)
     bufferptr bp = buffer::create(len);
     int r = safe_read_exact(fd, bp.c_str(), len);
     if (r) {
-      derr << "FileJournal::wrap_read_bl: safe_read_exact returned "
+      derr << "FileJournal::wrap_read_bl: safe_read_exact " << pos << "~" << len << " returned "
           << r << dendl;
       ceph_abort();
     }