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-rw-r--r--src/H5FDsec2.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/src/H5FDsec2.c b/src/H5FDsec2.c
index 98021ca..70347fa 100644
--- a/src/H5FDsec2.c
+++ b/src/H5FDsec2.c
@@ -525,6 +525,12 @@ H5FD_sec2_query(const H5FD_t *_file, unsigned long *flags /* out */)
FUNC_ENTER_NOAPI_NOINIT_NOERR
/* Set the VFL feature flags that this driver supports */
+ /* Notice: the Mirror VFD Writer currently uses only the Sec2 driver as
+ * the underying driver -- as such, the Mirror VFD implementation copies
+ * these feature flags as its own. Any modifications made here must be
+ * reflected in H5FDmirror.c
+ * -- JOS 2020-01-13
+ */
if(flags) {
*flags = 0;
*flags |= H5FD_FEAT_AGGREGATE_METADATA; /* OK to aggregate metadata allocations */