HDF5: VFD handles ENOSPC OK at the moment (though FileWriter is still not 100% happy)

writer/HDF5Objects.cpp

@@ -3,6 +3,7 @@
 
 #include <cstring>
 #include <filesystem>
+#include <spdlog/spdlog.h>
 
 #include <bitshuffle/bshuf_h5filter.h>
 #include "HDF5Objects.h"
@@ -16,10 +17,7 @@ static void HDF5PoisonCallback(
     int error_number,
     void *user_data
 ) {
-    /*
-     * Mark writer failed, log, cancel acquisition, etc.
-     * Avoid throwing from this C callback.
-     */
+    spdlog::info("HDF5 Poison callback triggered: filename={}, operation={}, error_number={}", filename, operation, error_number);
 }
 
 hid_t HDF5Id::GetID() const {