Subfiling updates for release (#1963)

* Remove generated file h5fuse.sh

* Link pthreads library when Subfiling VFD is built

* Switch to MPI I/O driver for Subfiling HDF5 stub file

* Rough first implementation for Subfiling file deletion

* Subfiling VFD - get file dirname for file deletion

* Subfiling VFD - set lock callback to NULL for now to avoid performance
issues

* Committing clang-format changes

* Minor tidying up of Subfiling testing

* Fixups for Subfiling VFD support in tools

* Tidy up Subfiling public interface and add Doxygen

* Respect Subfiling configuration settings from application

* Add release note for Subfiling VFD

* Committing clang-format changes

* Committing clang-format changes

* Shorten some Subfiling environment variable names

Co-authored-by: github-actions <41898282+github-actions[bot]@users.noreply.github.com>

2 files changed, 27 insertions, 9 deletions

diff --git a/tools/lib/h5tools.c b/tools/lib/h5tools.c
index 9c4f746..e0de100 100644
--- a/tools/lib/h5tools.c
+++ b/tools/lib/h5tools.c
@@ -81,11 +81,20 @@ const char *volnames[] = {
  *
  */
 const char *drivernames[] = {
-    [SEC2_VFD_IDX] = "sec2",       [DIRECT_VFD_IDX] = "direct", [LOG_VFD_IDX] = "log",
-    [WINDOWS_VFD_IDX] = "windows", [STDIO_VFD_IDX] = "stdio",   [CORE_VFD_IDX] = "core",
-    [FAMILY_VFD_IDX] = "family",   [SPLIT_VFD_IDX] = "split",   [MULTI_VFD_IDX] = "multi",
-    [MPIO_VFD_IDX] = "mpio",       [ROS3_VFD_IDX] = "ros3",     [HDFS_VFD_IDX] = "hdfs",
-    [ONION_VFD_IDX] = "onion",
+    [SEC2_VFD_IDX]      = "sec2",
+    [DIRECT_VFD_IDX]    = "direct",
+    [LOG_VFD_IDX]       = "log",
+    [WINDOWS_VFD_IDX]   = "windows",
+    [STDIO_VFD_IDX]     = "stdio",
+    [CORE_VFD_IDX]      = "core",
+    [FAMILY_VFD_IDX]    = "family",
+    [SPLIT_VFD_IDX]     = "split",
+    [MULTI_VFD_IDX]     = "multi",
+    [MPIO_VFD_IDX]      = "mpio",
+    [ROS3_VFD_IDX]      = "ros3",
+    [HDFS_VFD_IDX]      = "hdfs",
+    [SUBFILING_VFD_IDX] = H5FD_SUBFILING_NAME,
+    [ONION_VFD_IDX]     = "onion",
 };
 
 #define NUM_VOLS    (sizeof(volnames) / sizeof(volnames[0]))
@@ -574,6 +583,14 @@ h5tools_set_fapl_vfd(hid_t fapl_id, h5tools_vfd_info_t *vfd_info)
                 H5TOOLS_GOTO_ERROR(FAIL, "The HDFS VFD is not enabled");
 #endif
             }
+            else if (!HDstrcmp(vfd_info->u.name, drivernames[SUBFILING_VFD_IDX])) {
+#ifdef H5_HAVE_SUBFILING_VFD
+                if (H5Pset_fapl_subfiling(fapl_id, (const H5FD_subfiling_config_t *)vfd_info->info) < 0)
+                    H5TOOLS_GOTO_ERROR(FAIL, "H5Pset_fapl_subfiling() failed");
+#else
+                H5TOOLS_GOTO_ERROR(FAIL, "The Subfiling VFD is not enabled");
+#endif
+            }
             else if (!HDstrcmp(vfd_info->u.name, drivernames[ONION_VFD_IDX])) {
                 /* Onion driver */
                 if (!vfd_info->info)
diff --git a/tools/lib/h5tools.h b/tools/lib/h5tools.h
index 6561b68..37ea36f 100644
--- a/tools/lib/h5tools.h
+++ b/tools/lib/h5tools.h
@@ -578,15 +578,15 @@ typedef struct h5tools_vfd_info_t {
     } u;
 } h5tools_vfd_info_t;
 
-/* This enum should match the entries in the above 'volnames'
- * since they are indices into the 'volnames' array. */
+/* This enum should match the entries in the 'volnames'
+ * array since they are indices into that array. */
 typedef enum {
     NATIVE_VOL_IDX = 0,
     PASS_THROUGH_VOL_IDX,
 } vol_idx;
 
-/* This enum should match the entries in the above 'drivernames'
- * since they are indices into the 'drivernames' array. */
+/* This enum should match the entries in the 'drivernames'
+ * array since they are indices into that array. */
 typedef enum {
     SEC2_VFD_IDX = 0,
     DIRECT_VFD_IDX,
@@ -600,6 +600,7 @@ typedef enum {
     MPIO_VFD_IDX,
     ROS3_VFD_IDX,
     HDFS_VFD_IDX,
+    SUBFILING_VFD_IDX,
     ONION_VFD_IDX,
 } driver_idx;