disk layer gc and error/warnings cleanup (#515)

- Improvement: Use GC reserve when writing index/manifest for a disk cache bucket when disk is low when available
- Improvement: Demote errors to warning for issues that are not critical and we handle gracefully
- Improvement: Treat more out of memory errors from windows as Out Of Memory errors

Fixed wrong sizeof() statement for compactcas index (luckily the two structs are of same size)

1 files changed, 2 insertions, 2 deletions

diff --git a/src/zenstore/compactcas.cpp b/src/zenstore/compactcas.cpp
index de2800895..00a018948 100644
--- a/src/zenstore/compactcas.cpp
+++ b/src/zenstore/compactcas.cpp
@@ -885,8 +885,8 @@ CasContainerStrategy::MakeIndexSnapshot()
 
 		Header.Checksum = CasDiskIndexHeader::ComputeChecksum(Header);
 
-		ObjectIndexFile.Write(&Header, sizeof(CasDiskIndexEntry), 0);
-		ObjectIndexFile.Write(Entries.data(), Entries.size() * sizeof(CasDiskIndexEntry), sizeof(CasDiskIndexEntry));
+		ObjectIndexFile.Write(&Header, sizeof(CasDiskIndexHeader), 0);
+		ObjectIndexFile.Write(Entries.data(), Entries.size() * sizeof(CasDiskIndexEntry), sizeof(CasDiskIndexHeader));
 		ObjectIndexFile.Flush();
 		ObjectIndexFile.Close();
 		EntryCount		   = Entries.size();