if a block is missing during gc, log an error but still continue (#289)

1 files changed, 8 insertions, 4 deletions

diff --git a/src/zenstore/blockstore.cpp b/src/zenstore/blockstore.cpp
index 378d9fd52..0593ff06b 100644
--- a/src/zenstore/blockstore.cpp
+++ b/src/zenstore/blockstore.cpp
@@ -481,10 +481,14 @@ BlockStore::ReclaimSpace(const ReclaimSnapshotState&			Snapshot,
 			if (!OldBlockFile)
 			{
 				// If the block file pointed to does not exist, move them all to deleted list
-				BlockDeleteChunks[ChunkMapIndex].insert(BlockDeleteChunks[ChunkMapIndex].end(),
-														BlockKeepChunks[ChunkMapIndex].begin(),
-														BlockKeepChunks[ChunkMapIndex].end());
-				BlockKeepChunks[ChunkMapIndex].clear();
+				ChunkIndexArray& KeepMap = BlockKeepChunks[ChunkMapIndex];
+				ZEN_ERROR("Expected to find block {} in {} - this should never happen, marking {} entries as deleted.",
+						  BlockIndex,
+						  m_BlocksBasePath,
+						  KeepMap.size());
+
+				BlockDeleteChunks[ChunkMapIndex].insert(BlockDeleteChunks[ChunkMapIndex].end(), KeepMap.begin(), KeepMap.end());
+				KeepMap.clear();
 			}
 
 			const ChunkIndexArray& KeepMap = BlockKeepChunks[ChunkMapIndex];