osd/SnapMapper: Crimson - fix OSDriver::get_next

There are other omap_keys that we may return which are not
SnapMapper entries (_biginfo, _epoch, _fastinfo etc.).

Signed-off-by: Matan Breizman <mbreizma@redhat.com>

diff --git a/src/osd/SnapMapper.cc b/src/osd/SnapMapper.cc
index 40611f7a646a817b609b291d47a3edff79a9076f..8f1be7052693cfeaac3078d3668c0e23fd346000 100644 (file)
--- a/src/osd/SnapMapper.cc
+++ b/src/osd/SnapMapper.cc
@@ -119,7 +119,8 @@ int OSDriver::get_next(
     ch, hoid, key
   ).safe_then_unpack([&key, next] (bool, FuturizedStore::Shard::omap_values_t&& vals) {
     CRIMSON_DEBUG("OSDriver::get_next key {} got omap values", key);
-    if (auto nit = std::begin(vals); nit == std::end(vals)) {
+    if (auto nit = std::begin(vals);
+        nit == std::end(vals) || !SnapMapper::is_mapping(nit->first)) {
       CRIMSON_DEBUG("OSDriver::get_next key {} no more values", key);
       return -ENOENT;
     } else {