Merge pull request #931 in HDFFV/hdf5 from ~VCHOI/my_hdf5_fork:develop to develop

* commit 'f08b8fa10e7bac5ae26e3b06f938d38ebb3f28e1':
  Enhancement to the tool h5clear (HDFFV-10360)
  Fix for HDFFV-10209 VDS SWMR test failure Free the object header when there are chksum retries.

41 files changed, 1148 insertions, 105 deletions

diff --git a/MANIFEST b/MANIFEST
index 7d28f12..df368aa 100644
--- a/MANIFEST
+++ b/MANIFEST
@@ -1488,15 +1488,38 @@
 ./tools/test/misc/testh5mkgrp.sh.in
 ./tools/test/misc/testh5repart.sh.in
 ./tools/test/misc/talign.c
+./tools/test/misc/testfiles/h5clear_equal_after_size.ddl
+./tools/test/misc/testfiles/h5clear_equal_before_size.ddl
+./tools/test/misc/testfiles/h5clear_greater_after_size.ddl
+./tools/test/misc/testfiles/h5clear_greater_before_size.ddl
+./tools/test/misc/testfiles/h5clear_less_after_size.ddl
+./tools/test/misc/testfiles/h5clear_less_before_size.ddl
 ./tools/test/misc/testfiles/h5clear_missing_file.ddl
+./tools/test/misc/testfiles/h5clear_noclose_after_size.ddl
+./tools/test/misc/testfiles/h5clear_noclose_before_size.ddl
 ./tools/test/misc/testfiles/h5clear_no_mdc_image.ddl
 ./tools/test/misc/testfiles/h5clear_open_fail.ddl
+./tools/test/misc/testfiles/h5clear_status_noclose_after_size.ddl
 ./tools/test/misc/testfiles/h5clear_usage.ddl
+./tools/test/misc/testfiles/h5clear_user_equal_after_size.ddl
+./tools/test/misc/testfiles/h5clear_user_equal_before_size.ddl
+./tools/test/misc/testfiles/h5clear_user_greater_after_size.ddl
+./tools/test/misc/testfiles/h5clear_user_greater_before_size.ddl
+./tools/test/misc/testfiles/h5clear_user_less_after_size.ddl
+./tools/test/misc/testfiles/h5clear_user_less_before_size.ddl
+./tools/test/misc/testfiles/h5clear_fsm_persist_equal.h5
+./tools/test/misc/testfiles/h5clear_fsm_persist_greater.h5
+./tools/test/misc/testfiles/h5clear_fsm_persist_less.h5
+./tools/test/misc/testfiles/h5clear_fsm_persist_noclose.h5
+./tools/test/misc/testfiles/h5clear_fsm_persist_user_equal.h5
+./tools/test/misc/testfiles/h5clear_fsm_persist_user_greater.h5
+./tools/test/misc/testfiles/h5clear_fsm_persist_user_less.h5
 ./tools/test/misc/testfiles/h5clear_log_v3.h5
 ./tools/test/misc/testfiles/h5clear_mdc_image.h5
 ./tools/test/misc/testfiles/h5clear_sec2_v0.h5
 ./tools/test/misc/testfiles/h5clear_sec2_v2.h5
 ./tools/test/misc/testfiles/h5clear_sec2_v3.h5
+./tools/test/misc/testfiles/h5clear_status_noclose.h5
 ./tools/test/misc/testfiles/latest_h5clear_log_v3.h5
 ./tools/test/misc/testfiles/latest_h5clear_sec2_v3.h5
 ./tools/test/misc/testfiles/mod_h5clear_mdc_image.h5
diff --git a/src/H5F.c b/src/H5F.c
index 8e5f65a..2cd65cb 100644
--- a/src/H5F.c
+++ b/src/H5F.c
@@ -845,8 +845,6 @@ herr_t
 H5Fget_filesize(hid_t file_id, hsize_t *size)
 {
     H5F_t       *file;                  /* File object for file ID */
-    haddr_t     eof;                    /* End of file address */
-    haddr_t     eoa;                    /* End of allocation address */
     haddr_t     max_eof_eoa;            /* Maximum of the EOA & EOF */
     haddr_t     base_addr;              /* Base address for the file */
     herr_t      ret_value = SUCCEED;    /* Return value */
@@ -859,11 +857,9 @@ H5Fget_filesize(hid_t file_id, hsize_t *size)
         HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "not a file ID")
 
     /* Go get the actual file size */
-    eof = H5FD_get_eof(file->shared->lf, H5FD_MEM_DEFAULT);
-    eoa = H5FD_get_eoa(file->shared->lf, H5FD_MEM_DEFAULT);
-    max_eof_eoa = MAX(eof, eoa);
-    if(HADDR_UNDEF == max_eof_eoa)
-        HGOTO_ERROR(H5E_FILE, H5E_CANTGET, FAIL, "file get eof/eoa requests failed")
+    if(H5F__get_max_eof_eoa(file, &max_eof_eoa) < 0)
+        HGOTO_ERROR(H5E_FILE, H5E_CANTGET, FAIL, "file can't get max eof/eoa ")
+
     base_addr = H5FD_get_base_addr(file->shared->lf);
 
     if(size)
@@ -1949,3 +1945,87 @@ done:
     FUNC_LEAVE_API(ret_value)
 } /* H5Fget_mdc_image_info() */
 
+
+/*-------------------------------------------------------------------------
+ * Function:    H5Fget_eoa
+ *
+ * Purpose:     Returns the address of the first byte after the last
+ *              allocated memory in the file.
+ *              (See H5FDget_eoa() in H5FD.c)
+ *
+ * Return:      Success:    First byte after allocated memory.
+ *              Failure:    HADDR_UNDEF
+ *
+ * Return:      Non-negative on success/Negative on errors
+ *-------------------------------------------------------------------------
+ */
+herr_t
+H5Fget_eoa(hid_t file_id, haddr_t *eoa)
+{
+    H5F_t *file;                    /* File object for file ID */
+    haddr_t rel_eoa;                /* Relative address of EOA */
+    herr_t ret_value = SUCCEED;     /* Return value */
+
+    FUNC_ENTER_API(FAIL)
+    H5TRACE2("e", "i*a", file_id, eoa);
+
+    /* Check args */
+    if(NULL == (file = (H5F_t *)H5I_object_verify(file_id, H5I_FILE)))
+        HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "hid_t identifier is not a file ID")
+
+    /* This public routine will work only for drivers with this feature enabled.*/
+    /* We might introduce a new feature flag in the future */
+    if(!H5F_HAS_FEATURE(file, H5FD_FEAT_SUPPORTS_SWMR_IO))
+        HGOTO_ERROR(H5E_FILE, H5E_BADVALUE, FAIL, "must use a SWMR-compatible VFD for this public routine")
+
+    /* The real work */
+    if(HADDR_UNDEF == (rel_eoa = H5FD_get_eoa(file->shared->lf, H5FD_MEM_DEFAULT)))
+        HGOTO_ERROR(H5E_FILE, H5E_CANTGET, FAIL, "get_eoa request failed")
+
+    /* (Note compensating for base address subtraction in internal routine) */
+    if(eoa)
+        *eoa = rel_eoa + H5FD_get_base_addr(file->shared->lf);
+done:
+    FUNC_LEAVE_API(ret_value)
+} /* H5Fget_eoa() */
+
+
+/*-------------------------------------------------------------------------
+ * Function:    H5Fincrement_filesize
+ *
+ * Purpose:     Set the EOA for the file to the maximum of (EOA, EOF) + increment
+ *
+ * Return:      Non-negative on success/Negative on errors
+ *-------------------------------------------------------------------------
+ */
+herr_t
+H5Fincrement_filesize(hid_t file_id, hsize_t increment)
+{
+    H5F_t *file;                /* File object for file ID */
+    haddr_t max_eof_eoa;        /* Maximum of the relative EOA & EOF */
+    herr_t ret_value = SUCCEED; /* Return value */
+
+    FUNC_ENTER_API(FAIL)
+    H5TRACE2("e", "ih", file_id, increment);
+
+    /* Check args */
+    if(NULL == (file = (H5F_t *)H5I_object_verify(file_id, H5I_FILE)))
+        HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "hid_t identifier is not a file ID")
+
+    /* This public routine will work only for drivers with this feature enabled.*/
+    /* We might introduce a new feature flag in the future */
+    if(!H5F_HAS_FEATURE(file, H5FD_FEAT_SUPPORTS_SWMR_IO))
+        HGOTO_ERROR(H5E_FILE, H5E_BADVALUE, FAIL, "must use a SWMR-compatible VFD for this public routine")
+
+    /* Get the maximum of EOA and EOF */
+    if(H5F__get_max_eof_eoa(file, &max_eof_eoa) < 0)
+        HGOTO_ERROR(H5E_FILE, H5E_CANTGET, FAIL, "file can't get max eof/eoa ")
+
+    /* Set EOA to the maximum value + increment */
+    /* H5FD_set_eoa() will add base_addr to max_eof_eoa */
+    if(H5FD_set_eoa(file->shared->lf, H5FD_MEM_DEFAULT, max_eof_eoa + increment) < 0)
+        HGOTO_ERROR(H5E_FILE, H5E_CANTSET, FAIL, "driver set_eoa request failed")
+
+done:
+    FUNC_LEAVE_API(ret_value)
+} /* H5Fincrement_filesize() */
diff --git a/src/H5Fint.c b/src/H5Fint.c
index cc5931a..24844a4 100644
--- a/src/H5Fint.c
+++ b/src/H5Fint.c
@@ -124,7 +124,6 @@ H5F_get_access_plist(H5F_t *f, hbool_t app_ref)
     H5FD_driver_prop_t driver_prop;         /* Property for driver ID & info */
     hbool_t driver_prop_copied = FALSE;     /* Whether the driver property has been set up */
     unsigned   efc_size = 0;
-    hbool_t    latest_format = FALSE;       /* Always use the latest format? */
     hid_t      ret_value = SUCCEED;         /* Return value */
 
     FUNC_ENTER_NOAPI(FAIL)
@@ -820,7 +819,6 @@ H5F_new(H5F_file_t *shared, unsigned flags, hid_t fcpl_id, hid_t fapl_id, H5FD_t
     else {
         H5P_genplist_t *plist;          /* Property list */
         unsigned efc_size;              /* External file cache size */
-        hbool_t latest_format;          /* Always use the latest format?    */
         size_t u;                       /* Local index variable */
 
         HDassert(lf != NULL);
@@ -1602,7 +1600,7 @@ H5F_open(const char *name, unsigned flags, hid_t fcpl_id, hid_t fapl_id,
     } /* end if */
     else if (1 == shared->nrefs) {
         /* Read the superblock if it hasn't been read before. */
-        if(H5F__super_read(file, meta_dxpl_id, raw_dxpl_id, TRUE) < 0)
+        if(H5F__super_read(file, meta_dxpl_id, raw_dxpl_id, fapl_id, TRUE) < 0)
             HGOTO_ERROR(H5E_FILE, H5E_READERROR, NULL, "unable to read superblock")
 
         /* Create the page buffer before initializing the superblock */
@@ -2921,6 +2919,43 @@ done:
     FUNC_LEAVE_NOAPI(ret_value)
 } /* end H5F__set_paged_aggr() */
 
+/*-------------------------------------------------------------------------
+ * Function: H5F__get_max_eof_eoa
+ *
+ * Purpose:  Determine the maximum of (EOA, EOF) for the file
+ *
+ * Return:   Non-negative on success/Negative on failure
+ *-------------------------------------------------------------------------
+ */
+herr_t
+H5F__get_max_eof_eoa(const H5F_t *f, haddr_t *max_eof_eoa)
+{
+    haddr_t eof;                /* Relative address for EOF */
+    haddr_t eoa;                /* Relative address for EOA */
+    haddr_t tmp_max;
+    herr_t ret_value = SUCCEED; /* Return value */
+
+    FUNC_ENTER_PACKAGE
+
+    /* Sanity checks */
+    HDassert(f);
+    HDassert(f->shared);
+
+    /* Get the relative EOA and EOF */
+    eoa = H5FD_get_eoa(f->shared->lf, H5FD_MEM_DEFAULT);
+    eof = H5FD_get_eof(f->shared->lf, H5FD_MEM_DEFAULT);
+
+    /* Determine the maximum */
+    tmp_max = MAX(eof, eoa);
+    if(HADDR_UNDEF == tmp_max)
+        HGOTO_ERROR(H5E_FILE, H5E_CANTGET, FAIL, "file get eof/eoa requests failed")
+
+    *max_eof_eoa = tmp_max;
+
+done:
+    FUNC_LEAVE_NOAPI(ret_value)
+} /* end H5F__get_max_eof_eoa() */
+
 #ifdef H5_HAVE_PARALLEL
 
 /*-------------------------------------------------------------------------
diff --git a/src/H5Fpkg.h b/src/H5Fpkg.h
index c9aba56..a4c1a24 100644
--- a/src/H5Fpkg.h
+++ b/src/H5Fpkg.h
@@ -412,7 +412,7 @@ H5_DLL herr_t H5F_mount_count_ids(H5F_t *f, unsigned *nopen_files, unsigned *nop
 
 /* Superblock related routines */
 H5_DLL herr_t H5F__super_init(H5F_t *f, hid_t dxpl_id);
-H5_DLL herr_t H5F__super_read(H5F_t *f, hid_t meta_dxpl_id, hid_t raw_dxpl_id,
+H5_DLL herr_t H5F__super_read(H5F_t *f, hid_t meta_dxpl_id, hid_t raw_dxpl_id, hid_t fapl_id,
     hbool_t initial_read);
 H5_DLL herr_t H5F__super_size(H5F_t *f, hid_t dxpl_id, hsize_t *super_size, hsize_t *super_ext_size);
 H5_DLL herr_t H5F__super_free(H5F_super_t *sblock);
@@ -457,6 +457,7 @@ H5_DLL htri_t H5F_try_extend(H5F_t *f, hid_t dxpl_id, H5FD_mem_t type,
 H5_DLL herr_t H5F__set_eoa(const H5F_t *f, H5F_mem_t type, haddr_t addr);
 H5_DLL herr_t H5F__set_base_addr(const H5F_t *f, haddr_t addr);
 H5_DLL herr_t H5F__set_paged_aggr(const H5F_t *f, hbool_t paged);
+H5_DLL herr_t H5F__get_max_eof_eoa(const H5F_t *f, haddr_t *max_eof_eoa);
 
 /* Functions that flush or evict */
 H5_DLL herr_t H5F__evict_cache_entries(H5F_t *f, hid_t dxpl_id);
diff --git a/src/H5Fprivate.h b/src/H5Fprivate.h
index 856e618..28ebbd2 100644
--- a/src/H5Fprivate.h
+++ b/src/H5Fprivate.h
@@ -492,6 +492,10 @@ typedef struct H5F_t H5F_t;
 #define H5F_ACS_EFC_SIZE_NAME                   "efc_size"      /* Size of external file cache */
 #define H5F_ACS_FILE_IMAGE_INFO_NAME            "file_image_info" /* struct containing initial file image and callback info */
 #define H5F_ACS_CLEAR_STATUS_FLAGS_NAME         "clear_status_flags" /* Whether to clear superblock status_flags (private property only used by h5clear) */
+#define H5F_ACS_NULL_FSM_ADDR_NAME              "null_fsm_addr"   /* Nullify addresses of free-space managers */
+                                                                  /* Private property used only by h5clear */
+#define H5F_ACS_SKIP_EOF_CHECK_NAME             "skip_eof_check"  /* Skip EOF check */
+                                                                  /* Private property used only by h5clear */
 #define H5F_ACS_USE_MDC_LOGGING_NAME            "use_mdc_logging" /* Whether to use metadata cache logging */
 #define H5F_ACS_MDC_LOG_LOCATION_NAME           "mdc_log_location" /* Name of metadata cache log location */
 #define H5F_ACS_START_MDC_LOG_ON_ACCESS_NAME    "start_mdc_log_on_access" /* Whether logging starts on file create/open */
diff --git a/src/H5Fpublic.h b/src/H5Fpublic.h
index d333fa7..73c59f5 100644
--- a/src/H5Fpublic.h
+++ b/src/H5Fpublic.h
@@ -241,6 +241,8 @@ H5_DLL herr_t H5Fmount(hid_t loc, const char *name, hid_t child, hid_t plist);
 H5_DLL herr_t H5Funmount(hid_t loc, const char *name);
 H5_DLL hssize_t H5Fget_freespace(hid_t file_id);
 H5_DLL herr_t H5Fget_filesize(hid_t file_id, hsize_t *size);
+H5_DLL herr_t H5Fget_eoa(hid_t file_id, haddr_t *eoa);
+H5_DLL herr_t H5Fincrement_filesize(hid_t file_id, hsize_t increment);
 H5_DLL ssize_t H5Fget_file_image(hid_t file_id, void * buf_ptr, size_t buf_len);
 H5_DLL herr_t H5Fget_mdc_config(hid_t file_id,
 				H5AC_cache_config_t * config_ptr);
diff --git a/src/H5Fsuper.c b/src/H5Fsuper.c
index 4250ff0..3db9b2f 100644
--- a/src/H5Fsuper.c
+++ b/src/H5Fsuper.c
@@ -324,7 +324,7 @@ done:
  *-------------------------------------------------------------------------
  */
 herr_t
-H5F__super_read(H5F_t *f, hid_t meta_dxpl_id, hid_t raw_dxpl_id, hbool_t initial_read)
+H5F__super_read(H5F_t *f, hid_t meta_dxpl_id, hid_t raw_dxpl_id, hid_t fapl_id, hbool_t initial_read)
 {
     H5P_genplist_t     *dxpl = NULL;        /* DXPL object */
     H5AC_ring_t         ring, orig_ring = H5AC_RING_INV;
@@ -337,7 +337,8 @@ H5F__super_read(H5F_t *f, hid_t meta_dxpl_id, hid_t raw_dxpl_id, hbool_t initial
     haddr_t             eof;                /* End of file address */
     unsigned            rw_flags;           /* Read/write permissions for file */
     hbool_t             skip_eof_check = FALSE; /* Whether to skip checking the EOF value */
-    herr_t              ret_value = SUCCEED; /* Return value */
+    H5P_genplist_t      *a_plist;               /* File access property list */
+    herr_t              ret_value = SUCCEED;    /* Return value */
 #ifdef H5_HAVE_PARALLEL
     int                 mpi_rank = 0, mpi_size = 1;
     int                 mpi_result;
@@ -595,6 +596,20 @@ H5F__super_read(H5F_t *f, hid_t meta_dxpl_id, hid_t raw_dxpl_id, hbool_t initial
      * as the file can appear truncated if only part of it has been
      * been flushed to disk by the SWMR writer process.
      */
+    /* The EOF check is also skipped when the private property 
+     * H5F_ACS_SKIP_EOF_CHECK_NAME exists in the fapl.  
+     * This property is enabled by the tool h5clear with these
+     * two options: (1) --filesize (2) --increment
+     */
+
+    /* Check if this private property exists in fapl */
+    if(NULL == (a_plist = (H5P_genplist_t *)H5I_object(fapl_id)))
+        HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not file access property list")
+    if(H5P_exist_plist(a_plist, H5F_ACS_SKIP_EOF_CHECK_NAME) > 0) {
+        if(H5P_get(a_plist, H5F_ACS_SKIP_EOF_CHECK_NAME, &skip_eof_check) < 0)
+            HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, FAIL, "can't get clearance for persisting fsm addr")
+    }
+
     if(H5F_INTENT(f) & H5F_ACC_SWMR_READ) {
         /* 
          * When the file is opened for SWMR read access, skip the check if:
@@ -757,6 +772,7 @@ H5F__super_read(H5F_t *f, hid_t meta_dxpl_id, hid_t raw_dxpl_id, hbool_t initial
         if(status) {
             H5O_fsinfo_t fsinfo;   /* File space info message from superblock extension */
             uint8_t flags;          /* Message flags */
+            hbool_t null_fsm_addr = FALSE;  /* Whether to drop free-space to the floor */
 
             /* Get message flags */
             if(H5O_msg_get_flags(&ext_loc, H5O_FSINFO_ID, meta_dxpl_id, &flags) < 0)
@@ -765,6 +781,13 @@ H5F__super_read(H5F_t *f, hid_t meta_dxpl_id, hid_t raw_dxpl_id, hbool_t initial
             /* If message is NOT marked "unknown"--set up file space info  */
             if(!(flags & H5O_MSG_FLAG_WAS_UNKNOWN)) {
 
+                /* The tool h5clear uses this property to tell the library
+                   to drop free-space to the floor */
+                if(H5P_exist_plist(a_plist, H5F_ACS_NULL_FSM_ADDR_NAME) > 0) {
+                    if(H5P_get(a_plist, H5F_ACS_NULL_FSM_ADDR_NAME, &null_fsm_addr) < 0)
+                        HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, FAIL, "can't get clearance for persisting fsm addr")
+                }
+
                 /* Retrieve the 'file space info' structure */
                 if(NULL == H5O_msg_read(&ext_loc, H5O_FSINFO_ID, &fsinfo, meta_dxpl_id))
                     HGOTO_ERROR(H5E_FILE, H5E_CANTGET, FAIL, "unable to get free-space manager info message")
@@ -808,13 +831,30 @@ H5F__super_read(H5F_t *f, hid_t meta_dxpl_id, hid_t raw_dxpl_id, hbool_t initial
                 if(f->shared->eoa_pre_fsm_fsalloc != fsinfo.eoa_pre_fsm_fsalloc)
                     f->shared->eoa_pre_fsm_fsalloc = fsinfo.eoa_pre_fsm_fsalloc;
 
-                /* f->shared->eoa_pre_fsm_fsalloc must always be HADDR_UNDEF
-                 * in the absence of persistant free space managers.
+               /* f->shared->eoa_pre_fsm_fsalloc must always be HADDR_UNDEF
+                * in the absence of persistant free space managers.
+                */
+                /* If the following two conditions are true:
+                 *       (1) skipping EOF check (skip_eof_check)
+                 *       (2) dropping free-space to the floor (null_fsm_addr)
+                 *  skip the asserts as "eoa_pre_fsm_fsalloc" may be undefined
+                 *  for a crashed file with persistant free space managers.
+                 *  #1 and #2 are enabled when the tool h5clear --increment
+                 *  option is used.
                  */
-                HDassert((!f->shared->fs_persist) || (f->shared->eoa_pre_fsm_fsalloc != HADDR_UNDEF));
-                HDassert(!f->shared->first_alloc_dealloc);
+                if(!skip_eof_check && !null_fsm_addr) {
+                     HDassert((!f->shared->fs_persist) || (f->shared->eoa_pre_fsm_fsalloc != HADDR_UNDEF));
+                     HDassert(!f->shared->first_alloc_dealloc);
+                }
 
-                if((f->shared->eoa_pre_fsm_fsalloc != HADDR_UNDEF) &&
+                /* As "eoa_pre_fsm_fsalloc" may be undefined for a crashed file
+                 * with persistant free space managers, therefore, set
+                 * "first_alloc_dealloc" when the condition 
+                 * "dropping free-space to the floor is true.
+                 * This will ensure that no action is done to settle things on file
+                 * close via H5MF_settle_meta_data_fsm() and H5MF_settle_raw_data_fsm().
+                 */
+                if((f->shared->eoa_pre_fsm_fsalloc != HADDR_UNDEF || null_fsm_addr) &&
                    (H5F_INTENT(f) & H5F_ACC_RDWR))
                     f->shared->first_alloc_dealloc = TRUE;
 
@@ -822,7 +862,20 @@ H5F__super_read(H5F_t *f, hid_t meta_dxpl_id, hid_t raw_dxpl_id, hbool_t initial
                 for(u = 1; u < NELMTS(f->shared->fs_addr); u++)
                     f->shared->fs_addr[u] = fsinfo.fs_addr[u - 1];
 
-                if(fsinfo.mapped && (rw_flags & H5AC__READ_ONLY_FLAG) == 0) {
+                /* If the following two conditions are true:
+                 *      (1) file is persisting free-space 
+                 *      (2) dropping free-space to the floor (null_fsm_addr)
+                 * nullify the addresses of the FSMs 
+                 */
+                if(f->shared->fs_persist && null_fsm_addr) {
+                    for(u = 0; u < NELMTS(fsinfo.fs_addr); u++)
+                        f->shared->fs_addr[u] = fsinfo.fs_addr[u] = HADDR_UNDEF;
+                } 
+
+                /* For fsinfo.mapped: remove the FSINFO message from the superblock extension
+                   and write a new message to the extension */
+                /* For null_fsm_addr: just update FSINFO message in the superblock extension */
+                if(((fsinfo.mapped || null_fsm_addr) && (rw_flags & H5AC__READ_ONLY_FLAG) == 0)) {
 
                     /* Do the same kluge until we know for sure.  VC */
 #if 1 /* bug fix test code -- tidy this up if all goes well */ /* JRM */
@@ -836,11 +889,16 @@ H5F__super_read(H5F_t *f, hid_t meta_dxpl_id, hid_t raw_dxpl_id, hbool_t initial
                      f->shared->sblock = sblock;
 #endif /* JRM */
 
-                    if(H5F_super_ext_remove_msg(f, meta_dxpl_id, H5O_FSINFO_ID) < 0)
-                        HGOTO_ERROR(H5E_FILE, H5E_CANTDELETE, FAIL,  "error in removing message from superblock extension")
+                    if(null_fsm_addr) {
+                        if(H5F_super_ext_write_msg(f, meta_dxpl_id, H5O_FSINFO_ID, &fsinfo, FALSE, H5O_MSG_FLAG_MARK_IF_UNKNOWN) < 0)
+                            HGOTO_ERROR(H5E_FILE, H5E_WRITEERROR, FAIL, "error in writing fsinfo message to superblock extension")
+                    } else {
+                        if(H5F_super_ext_remove_msg(f, meta_dxpl_id, H5O_FSINFO_ID) < 0)
+                            HGOTO_ERROR(H5E_FILE, H5E_CANTDELETE, FAIL,  "error in removing message from superblock extension")
 
-                    if(H5F_super_ext_write_msg(f, meta_dxpl_id, H5O_FSINFO_ID, &fsinfo, TRUE, H5O_MSG_FLAG_MARK_IF_UNKNOWN) < 0)
-                        HGOTO_ERROR(H5E_FILE, H5E_WRITEERROR, FAIL, "error in writing fsinfo message to superblock extension")
+                        if(H5F_super_ext_write_msg(f, meta_dxpl_id, H5O_FSINFO_ID, &fsinfo, TRUE, H5O_MSG_FLAG_MARK_IF_UNKNOWN) < 0)
+                            HGOTO_ERROR(H5E_FILE, H5E_WRITEERROR, FAIL, "error in writing fsinfo message to superblock extension")
+                    }
 #if 1 /* bug fix test code -- tidy this up if all goes well */ /* JRM */
                     f->shared->sblock = NULL;
 #endif /* JRM */
@@ -1637,13 +1695,13 @@ H5F_super_ext_write_msg(H5F_t *f, hid_t dxpl_id, unsigned id, void *mesg,
 
     /* Open/create the superblock extension object header */
     if(H5F_addr_defined(f->shared->sblock->ext_addr)) {
-	if(H5F_super_ext_open(f, f->shared->sblock->ext_addr, &ext_loc) < 0)
-	    HGOTO_ERROR(H5E_FILE, H5E_CANTOPENOBJ, FAIL, "unable to open file's superblock extension")
+        if(H5F_super_ext_open(f, f->shared->sblock->ext_addr, &ext_loc) < 0)
+            HGOTO_ERROR(H5E_FILE, H5E_CANTOPENOBJ, FAIL, "unable to open file's superblock extension")
     } /* end if */
     else {
         HDassert(may_create);
-	if(H5F_super_ext_create(f, dxpl_id, &ext_loc) < 0)
-	    HGOTO_ERROR(H5E_FILE, H5E_CANTCREATE, FAIL, "unable to create file's superblock extension")
+        if(H5F_super_ext_create(f, dxpl_id, &ext_loc) < 0)
+            HGOTO_ERROR(H5E_FILE, H5E_CANTCREATE, FAIL, "unable to create file's superblock extension")
         ext_created = TRUE;
     } /* end else */
     HDassert(H5F_addr_defined(ext_loc.addr));
@@ -1651,24 +1709,24 @@ H5F_super_ext_write_msg(H5F_t *f, hid_t dxpl_id, unsigned id, void *mesg,
 
     /* Check if message with ID does not exist in the object header */
     if((status = H5O_msg_exists(&ext_loc, id, dxpl_id)) < 0)
-	HGOTO_ERROR(H5E_OHDR, H5E_CANTGET, FAIL, "unable to check object header for message or message exists")
+        HGOTO_ERROR(H5E_OHDR, H5E_CANTGET, FAIL, "unable to check object header for message or message exists")
 
     /* Check for creating vs. writing */
     if(may_create) {
-	if(status)
-	    HGOTO_ERROR(H5E_OHDR, H5E_CANTGET, FAIL, "Message should not exist")
+        if(status)
+            HGOTO_ERROR(H5E_OHDR, H5E_CANTGET, FAIL, "Message should not exist")
 
-	/* Create the message with ID in the superblock extension */
-	if(H5O_msg_create(&ext_loc, id, (mesg_flags | H5O_MSG_FLAG_DONTSHARE), H5O_UPDATE_TIME, mesg, dxpl_id) < 0)
-	    HGOTO_ERROR(H5E_OHDR, H5E_CANTGET, FAIL, "unable to create the message in object header")
+        /* Create the message with ID in the superblock extension */
+        if(H5O_msg_create(&ext_loc, id, (mesg_flags | H5O_MSG_FLAG_DONTSHARE), H5O_UPDATE_TIME, mesg, dxpl_id) < 0)
+            HGOTO_ERROR(H5E_OHDR, H5E_CANTGET, FAIL, "unable to create the message in object header")
     } /* end if */
     else {
-	if(!status)
-	    HGOTO_ERROR(H5E_OHDR, H5E_CANTGET, FAIL, "Message should exist")
+        if(!status)
+            HGOTO_ERROR(H5E_OHDR, H5E_CANTGET, FAIL, "Message should exist")
 
-	/* Update the message with ID in the superblock extension */
-	if(H5O_msg_write(&ext_loc, id, (mesg_flags | H5O_MSG_FLAG_DONTSHARE), H5O_UPDATE_TIME, mesg, dxpl_id) < 0)
-	    HGOTO_ERROR(H5E_OHDR, H5E_CANTGET, FAIL, "unable to write the message in object header")
+        /* Update the message with ID in the superblock extension */
+        if(H5O_msg_write(&ext_loc, id, (mesg_flags | H5O_MSG_FLAG_DONTSHARE), H5O_UPDATE_TIME, mesg, dxpl_id) < 0)
+            HGOTO_ERROR(H5E_OHDR, H5E_CANTGET, FAIL, "unable to write the message in object header")
     } /* end else */
 
 done:
diff --git a/src/H5Ocache.c b/src/H5Ocache.c
index 94049ef..2260e12 100644
--- a/src/H5Ocache.c
+++ b/src/H5Ocache.c
@@ -262,12 +262,23 @@ H5O__cache_verify_chksum(const void *_image, size_t len, void *_udata)
         uint32_t stored_chksum;     /* Stored metadata checksum value */
         uint32_t computed_chksum;   /* Computed metadata checksum value */
 
-	/* Get stored and computed checksums */
-	H5F_get_checksums(image, len, &stored_chksum, &computed_chksum);
-
-	if(stored_chksum != computed_chksum)
-	    ret_value = FALSE;
+        /* Get stored and computed checksums */
+        H5F_get_checksums(image, len, &stored_chksum, &computed_chksum);
+
+        if(stored_chksum != computed_chksum) {
+            /* These fields are not deserialized yet in H5O__prefix_deserialize() */
+            HDassert(udata->oh->chunk == NULL);
+            HDassert(udata->oh->mesg == NULL);
+            HDassert(udata->oh->proxy == NULL);
+
+            /* Indicate that udata->oh is to be freed later
+               in H5O__prefix_deserialize() */
+            udata->free_oh = TRUE;
+            ret_value = FALSE;
+        } /* end if */
     } /* end if */
+    else
+        HDassert(!(udata->common.file_intent & H5F_ACC_SWMR_WRITE));
 
     FUNC_LEAVE_NOAPI(ret_value)
 } /* end H5O__cache_verify_chksum() */
@@ -1263,8 +1274,22 @@ H5O__prefix_deserialize(const uint8_t *_image, H5O_cache_ud_t *udata)
     /* Verify object header prefix length */
     HDassert((size_t)(image - _image) == (size_t)(H5O_SIZEOF_HDR(oh) - H5O_SIZEOF_CHKSUM_OH(oh)));
 
-    /* Save the object header for later use in 'deserialize' callback */
-    udata->oh = oh;
+    /* If udata->oh is to be freed (see H5O__cache_verify_chksum), 
+       save the pointer to udata->oh and free it later after setting
+       udata->oh with the new object header */
+    if(udata->free_oh) {
+        H5O_t *saved_oh = udata->oh;
+        HDassert(udata->oh); 
+
+        /* Save the object header for later use in 'deserialize' callback */
+        udata->oh = oh;
+        if(H5O__free(saved_oh) < 0)
+            HGOTO_ERROR(H5E_OHDR, H5E_CANTRELEASE, FAIL, "can't destroy object header")
+        udata->free_oh = FALSE;
+    } else 
+        /* Save the object header for later use in 'deserialize' callback */
+        udata->oh = oh;
+
     oh = NULL;
 
 done:
diff --git a/src/H5Oint.c b/src/H5Oint.c
index 08eb28d..2351779 100644
--- a/src/H5Oint.c
+++ b/src/H5Oint.c
@@ -875,6 +875,7 @@ H5O_protect(const H5O_loc_t *loc, hid_t dxpl_id, unsigned prot_flags,
     udata.v1_pfx_nmesgs = 0;
     udata.chunk0_size = 0;
     udata.oh = NULL;
+    udata.free_oh = FALSE;
     udata.common.f = loc->file;
     udata.common.dxpl_id = dxpl_id;
     udata.common.file_intent = file_intent;
diff --git a/src/H5Opkg.h b/src/H5Opkg.h
index e970406..9392fa8 100644
--- a/src/H5Opkg.h
+++ b/src/H5Opkg.h
@@ -379,6 +379,7 @@ typedef struct H5O_cache_ud_t {
     unsigned v1_pfx_nmesgs;             /* Number of messages from v1 prefix header */
     size_t chunk0_size;                 /* Size of serialized first chunk    */
     H5O_t *oh;                          /* Partially deserialized object header, for later use */
+    hbool_t free_oh;                    /* Whether to free the object header or not */
     H5O_common_cache_ud_t common;       /* Common object header cache callback info */
 } H5O_cache_ud_t;
 
diff --git a/src/H5Pfapl.c b/src/H5Pfapl.c
index 148c247..eded286 100644
--- a/src/H5Pfapl.c
+++ b/src/H5Pfapl.c
@@ -193,6 +193,14 @@
 /* Definition for status_flags in the superblock */
 #define H5F_ACS_CLEAR_STATUS_FLAGS_SIZE         sizeof(hbool_t)
 #define H5F_ACS_CLEAR_STATUS_FLAGS_DEF          FALSE
+
+/* Definition for dropping free-space to the floor when reading in the superblock */
+#define H5F_ACS_NULL_FSM_ADDR_SIZE          sizeof(hbool_t)
+#define H5F_ACS_NULL_FSM_ADDR_DEF           FALSE
+/* Definition for skipping EOF check when reading in the superblock */
+#define H5F_ACS_SKIP_EOF_CHECK_SIZE         sizeof(hbool_t)
+#define H5F_ACS_SKIP_EOF_CHECK_DEF          FALSE
+
 /* Definition for 'use metadata cache logging' flag */
 #define H5F_ACS_USE_MDC_LOGGING_SIZE            sizeof(hbool_t)
 #define H5F_ACS_USE_MDC_LOGGING_DEF             FALSE
@@ -374,6 +382,9 @@ static const size_t H5F_def_core_write_tracking_page_size_g = H5F_ACS_CORE_WRITE
 static const unsigned H5F_def_metadata_read_attempts_g = H5F_ACS_METADATA_READ_ATTEMPTS_DEF;  /* Default setting for the # of metadata read attempts */
 static const H5F_object_flush_t H5F_def_object_flush_cb_g = H5F_ACS_OBJECT_FLUSH_CB_DEF;      /* Default setting for object flush callback */
 static const hbool_t H5F_def_clear_status_flags_g = H5F_ACS_CLEAR_STATUS_FLAGS_DEF;           /* Default to clear the superblock status_flags */
+static const hbool_t H5F_def_skip_eof_check_g = H5F_ACS_SKIP_EOF_CHECK_DEF;    /* Default setting for skipping EOF check */
+static const hbool_t H5F_def_null_fsm_addr_g = H5F_ACS_NULL_FSM_ADDR_DEF;      /* Default setting for dropping free-space to the floor */
+
 static const hbool_t H5F_def_use_mdc_logging_g = H5F_ACS_USE_MDC_LOGGING_DEF;                 /* Default metadata cache logging flag */
 static const char *H5F_def_mdc_log_location_g = H5F_ACS_MDC_LOG_LOCATION_DEF;                 /* Default mdc log location */
 static const hbool_t H5F_def_start_mdc_log_on_access_g = H5F_ACS_START_MDC_LOG_ON_ACCESS_DEF; /* Default mdc log start on access flag */
@@ -565,6 +576,16 @@ H5P__facc_reg_prop(H5P_genclass_t *pclass)
             NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL) < 0)
         HGOTO_ERROR(H5E_PLIST, H5E_CANTINSERT, FAIL, "can't insert property into class")
 
+    /* Register the private property of whether to skip EOF check. It's used by h5clear only. */
+    if(H5P_register_real(pclass, H5F_ACS_SKIP_EOF_CHECK_NAME, H5F_ACS_SKIP_EOF_CHECK_SIZE, &H5F_def_skip_eof_check_g,
+            NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL) < 0)
+        HGOTO_ERROR(H5E_PLIST, H5E_CANTINSERT, FAIL, "can't insert property into class")
+
+    /* Register the private property of whether to drop free-space to the floor. It's used by h5clear only. */
+    if(H5P_register_real(pclass, H5F_ACS_NULL_FSM_ADDR_NAME, H5F_ACS_NULL_FSM_ADDR_SIZE, &H5F_def_null_fsm_addr_g,
+            NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL) < 0)
+        HGOTO_ERROR(H5E_PLIST, H5E_CANTINSERT, FAIL, "can't insert property into class")
+
     /* Register the metadata cache logging flag. */
     if(H5P_register_real(pclass, H5F_ACS_USE_MDC_LOGGING_NAME, H5F_ACS_USE_MDC_LOGGING_SIZE, &H5F_def_use_mdc_logging_g,
             NULL, NULL, NULL, H5F_ACS_USE_MDC_LOGGING_ENC, H5F_ACS_USE_MDC_LOGGING_DEC, NULL, NULL, NULL, NULL) < 0)
diff --git a/test/tfile.c b/test/tfile.c
index f3d5a8f..80c1e11 100644
--- a/test/tfile.c
+++ b/test/tfile.c
@@ -134,6 +134,9 @@
 #define NGROUPS            2
 #define NDSETS            4
 
+/* Declaration for test_incr_filesize() */
+#define FILE8            "tfile8.h5"    /* Test file */
+
 /* Files created under 1.6 branch and 1.8 branch--used in test_filespace_compatible() */
 const char *OLD_FILENAME[] = {
     "filespace_1_6.h5",    /* 1.6 HDF5 file */
@@ -6926,6 +6929,130 @@ test_libver_macros2(void)
 
 /****************************************************************
 **
+**  test_filesize():
+**    Verify H5Fincrement_filesize() and H5Fget_eoa() works as
+**    indicated in the "RFC: Enhancement to the tool h5clear".
+**
+****************************************************************/
+static void
+test_incr_filesize(const char *env_h5_drvr)
+{
+    hid_t    fid;                       /* File opened with read-write permission */
+    h5_stat_size_t filesize;            /* Size of file when empty */
+    hid_t    fcpl;                      /* File creation property list */
+    hid_t    fapl;                      /* File access property list */
+    hid_t    dspace;                    /* Dataspace ID */
+    hid_t    dset;                      /* Dataset ID */
+    hid_t    dcpl;                      /* Dataset creation property list */
+    unsigned u;                         /* Local index variable */
+    char     filename[FILENAME_LEN];    /* Filename to use */
+    char     name[32];                  /* Dataset name */
+    haddr_t  stored_eoa;                /* The stored EOA value */
+    hid_t    driver_id = -1;            /* ID for this VFD */
+    unsigned long driver_flags = 0;     /* VFD feature flags */
+    herr_t   ret;                       /* Return value */
+
+    /* Output message about test being performed */
+    MESSAGE(5, ("Testing H5Fincrement_filesize() and H5Fget_eoa())\n"));
+
+    fapl = h5_fileaccess();
+    h5_fixname(FILE8, fapl, filename, sizeof filename);
+
+    /* Get the VFD feature flags */
+    driver_id = H5Pget_driver(fapl);
+    CHECK(driver_id, FAIL, "H5Pget_driver");
+
+    ret = H5FDdriver_query(driver_id, &driver_flags);
+    CHECK(ret, FAIL, "H5PDdriver_query");
+
+    /* Check whether the VFD feature flag supports these two public routines */
+    if(driver_flags & H5FD_FEAT_SUPPORTS_SWMR_IO) {
+
+        fcpl = H5Pcreate(H5P_FILE_CREATE);
+        CHECK(fcpl, FAIL, "H5Pcreate");
+
+        /* Set file space strategy */
+        ret = H5Pset_file_space_strategy(fcpl, H5F_FSPACE_STRATEGY_FSM_AGGR, FALSE, (hsize_t)1);
+        CHECK(ret, FAIL, "H5P_set_file_space_strategy");
+
+        /* Create the test file */
+        fid = H5Fcreate(filename, H5F_ACC_TRUNC, fcpl, fapl);
+        CHECK(fid, FAIL, "H5Fcreate");
+
+        /* Create dataspace for datasets */
+        dspace = H5Screate(H5S_SCALAR);
+        CHECK(dspace, FAIL, "H5Screate");
+
+        /* Create a dataset creation property list */
+        dcpl = H5Pcreate(H5P_DATASET_CREATE);
+        CHECK(dcpl, FAIL, "H5Pcreate");
+
+        /* Set the space allocation time to early */
+        ret = H5Pset_alloc_time(dcpl, H5D_ALLOC_TIME_EARLY);
+        CHECK(ret, FAIL, "H5Pset_alloc_time");
+
+        /* Create datasets in file */
+        for(u = 0; u < 10; u++) {
+            sprintf(name, "Dataset %u", u);
+            dset = H5Dcreate2(fid, name, H5T_STD_U32LE, dspace, H5P_DEFAULT, dcpl, H5P_DEFAULT);
+            CHECK(dset, FAIL, "H5Dcreate2");
+
+            ret = H5Dclose(dset);
+            CHECK(ret, FAIL, "H5Dclose");
+        } /* end for */
+
+        /* Close dataspace */
+        ret = H5Sclose(dspace);
+        CHECK(ret, FAIL, "H5Sclose");
+
+        /* Close dataset creation property list */
+        ret = H5Pclose(dcpl);
+        CHECK(ret, FAIL, "H5Pclose");
+
+        /* Close file */
+        ret = H5Fclose(fid);
+        CHECK(ret, FAIL, "H5Fclose");
+
+        /* Get the file size */
+        filesize = h5_get_file_size(filename, fapl);
+
+        /* Open the file */
+        fid = H5Fopen(filename, H5F_ACC_RDWR, fapl);
+        CHECK(fid, FAIL, "H5Fopen");
+
+        /* Get the stored EOA */
+        ret = H5Fget_eoa(fid, &stored_eoa);
+        CHECK(ret, FAIL, "H5Fget_eoa");
+        
+        /* Verify the stored EOA is the same as filesize */
+        VERIFY(filesize, stored_eoa, "file size");
+
+        /* Set the EOA to the MAX(EOA, EOF) + 512 */
+        ret = H5Fincrement_filesize(fid, 512);
+        CHECK(ret, FAIL, "H5Fincrement_filesize");
+
+        /* Close file */
+        ret = H5Fclose(fid);
+        CHECK(ret, FAIL, "H5Fclose");
+
+        /* Get the file size */
+        filesize = h5_get_file_size(filename, fapl);
+
+        /* Verify the filesize is the previous stored_eoa + 512 */
+        VERIFY(filesize, stored_eoa+512, "file size");
+
+        /* Close the file access property list */
+        ret = H5Pclose(fapl);
+        CHECK(ret, FAIL, "H5Pclose");
+
+        /* Close the file creation property list */
+        ret = H5Pclose(fcpl);
+        CHECK(ret, FAIL, "H5Pclose");
+    }
+} /* end test_incr_filesize() */
+
+/****************************************************************
+**
 **  test_deprec():
 **    Test deprecated functionality.
 **
@@ -7210,6 +7337,7 @@ test_file(void)
     test_libver_bounds_low_high();
     test_libver_macros();                       /* Test the macros for library version comparison */
     test_libver_macros2();                      /* Test the macros for library version comparison */
+    test_incr_filesize(env_h5_drvr);            /* Test H5Fincrement_filesize() and H5Fget_eoa() */
 #ifndef H5_NO_DEPRECATED_SYMBOLS
     test_deprec();                              /* Test deprecated routines */
 #endif /* H5_NO_DEPRECATED_SYMBOLS */
diff --git a/tools/src/misc/h5clear.c b/tools/src/misc/h5clear.c
index e3b989d..5724e1b 100644
--- a/tools/src/misc/h5clear.c
+++ b/tools/src/misc/h5clear.c
@@ -12,9 +12,11 @@
  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
 
 /*
- * Purpose: A tool to clear the status_flags field from the file's superblock via -s option.
- *          A tool to remove cache image from the file via -m option.
- *          
+ * Purpose: A tool used to do the following:
+ *      (1) -s, --status:   clear the status_flags field from the file's superblock
+ *      (2) -m, --image:    remove the metadata cache image from the file
+ *      (3) --increment=C:  set the file's EOA to the maximum of (EOA, EOF) + C
+ *      (4) --filesize:     print the file's EOA and EOF
  */
 #include "hdf5.h"
 #include "H5private.h"
@@ -24,18 +26,25 @@
 /* Name of tool */
 #define PROGRAMNAME     "h5clear"
 
-/* Make this private property (defined in H5Fprivate.h) available to h5clear. */
-#define H5F_ACS_CLEAR_STATUS_FLAGS_NAME            "clear_status_flags"
+/* Make these private properties (defined in H5Fprivate.h) available to h5clear. */
+#define H5F_ACS_CLEAR_STATUS_FLAGS_NAME         "clear_status_flags"
+#define H5F_ACS_NULL_FSM_ADDR_NAME              "null_fsm_addr"
+#define H5F_ACS_SKIP_EOF_CHECK_NAME             "skip_eof_check"
+
+/* Default increment is 1 megabytes for the --increment option */
+#define DEFAULT_INCREMENT   1024*1024
 
 static char *fname_g = NULL;
 static hbool_t clear_status_flags = FALSE;
 static hbool_t remove_cache_image = FALSE;
+static hbool_t print_filesize = FALSE;
+static hbool_t increment_eoa_eof = FALSE;
+static hsize_t increment = DEFAULT_INCREMENT;
 
 /*
- * Command-line options: The user can specify short or long-named
- * parameters.
+ * Command-line options: only publicize long options
  */
-static const char *s_opts = "hVsm";
+static const char *s_opts = "hVsmzi*";
 static struct long_options l_opts[] = {
         { "help", no_arg, 'h' },
         { "hel", no_arg, 'h'},
@@ -54,6 +63,21 @@ static struct long_options l_opts[] = {
         { "imag", no_arg, 'm' },
         { "ima", no_arg, 'm' },
         { "im", no_arg, 'm' },
+        { "filesize", no_arg, 'z' },
+        { "filesiz", no_arg, 'z' },
+        { "filesi", no_arg, 'z' },
+        { "files", no_arg, 'z' },
+        { "file", no_arg, 'z' },
+        { "fil", no_arg, 'z' },
+        { "fi", no_arg, 'z' },
+        { "increment", optional_arg, 'i' },
+        { "incremen", optional_arg, 'i' },
+        { "increme", optional_arg, 'i' },
+        { "increm", optional_arg, 'i' },
+        { "incre", optional_arg, 'i' },
+        { "incr", optional_arg, 'i' },
+        { "inc", optional_arg, 'i' },
+        { "in", optional_arg, 'i' },
         { NULL, 0, '\0' }
 };
 
@@ -76,6 +100,9 @@ static void usage(const char *prog)
     HDfprintf(stdout, "   -V, --version             Print version number and exit\n");
     HDfprintf(stdout, "   -s, --status              Clear the status_flags field in the file's superblock\n");
     HDfprintf(stdout, "   -m, --image               Remove the metadata cache image from the file\n");
+    HDfprintf(stdout, "   --filesize                Print the file's EOA and EOF\n");
+    HDfprintf(stdout, "   --increment=C             Set the file's EOA to the maximum of (EOA, EOF) + C for the file <file_name>\n");
+    HDfprintf(stdout, "                             C is >= 0; C is optional and will default to 1M when not set");
     HDfprintf(stdout, "\n");
     HDfprintf(stdout, "Examples of use:\n");
     HDfprintf(stdout, "\n");
@@ -84,6 +111,12 @@ static void usage(const char *prog)
     HDfprintf(stdout, "\n");
     HDfprintf(stdout, "h5clear -m file_name\n");
     HDfprintf(stdout, "  Remove the metadata cache image from the HDF5 file <file_name>.\n");
+    HDfprintf(stdout, "\n");
+    HDfprintf(stdout, "h5clear --increment file_name\n");
+    HDfprintf(stdout, "  Set the EOA to the maximum of (EOA, EOF) + 1M for the file <file_name>.\n");
+    HDfprintf(stdout, "\n");
+    HDfprintf(stdout, "h5clear --increment=512 file_name\n");
+    HDfprintf(stdout, "  Set the EOA to the maximum of (EOA, EOF) + 512 for the file <file_name>.\n");
 } /* usage() */
 
 
@@ -131,6 +164,18 @@ parse_command_line(int argc, const char **argv)
                 remove_cache_image = TRUE;
                 break;
 
+            case 'z':
+                print_filesize = TRUE;
+                break;
+
+            case 'i':
+                increment_eoa_eof = TRUE;
+                if(opt_arg != NULL && (increment = HDatoi(opt_arg)) < 0) {
+                    usage(h5tools_getprogname());
+                    goto done;
+                }
+                break;
+
             default:
                 usage(h5tools_getprogname());
                 h5tools_setstatus(EXIT_FAILURE);
@@ -176,8 +221,24 @@ leave(int ret)
 /*-------------------------------------------------------------------------
  * Function:    main
  *
- * Purpose:     To clear the status_flags field in the file's superblock (-s option).
- *              To remove the cache image from the file (-m option).
+ * Purpose: The options are:
+ *          (1) -s, --status:   clear the status_flags field from the file's superblock
+ *          (2) -m, --image:    remove the metadata cache image from the file
+ *          (3) --increment=C:  set the file's EOA to the maximum of (EOA, EOF) + C
+ *          (4) --filesize:     print the file's EOA and EOF
+ *
+ *          The three options: -s, -m, and --increment will modify the file
+ *          so the file is opened with write access.
+ *          The --filesize option just prints the EOA and EOF, so the file
+ *          is opened with read access.
+ *      
+ *          The -s option will activate the private property:
+ *              --H5F_ACS_CLEAR_STATUS_FLAGS_NAME         
+ *          The --increment option will active these two private properties:
+ *              --H5F_ACS_NULL_FSM_ADDR_NAME              
+ *              --H5F_ACS_SKIP_EOF_CHECK_NAME            
+ *          The --filesize will activate the private property:
+ *              --H5F_ACS_SKIP_EOF_CHECK_NAME            
  *
  * Return:      Success: 0
  *              Failure: 1
@@ -187,11 +248,12 @@ leave(int ret)
 int
 main (int argc, const char *argv[])
 {
-    char *fname = NULL;    /* File name */
-    hid_t fapl = -1;       /* File access property list */
-    hid_t fid = -1;        /* File ID */
+    char *fname = NULL;             /* File name */
+    hid_t fapl = -1;                /* File access property list */
+    hid_t fid = -1;                 /* File ID */
     haddr_t image_addr;
     hsize_t image_len;
+    unsigned flags = H5F_ACC_RDWR;    /* file access flags */
 
     h5tools_setprogname(PROGRAMNAME);
     h5tools_setstatus(EXIT_SUCCESS);
@@ -209,12 +271,22 @@ main (int argc, const char *argv[])
     if(fname_g == NULL)
         goto done;
 
-    if(!clear_status_flags && !remove_cache_image) {
+    /* Print usage/exit if not using at least one of the options */
+    if(!clear_status_flags && !remove_cache_image &&
+       !increment_eoa_eof && !print_filesize) {
         usage(h5tools_getprogname());
         h5tools_setstatus(EXIT_FAILURE);
         goto done;
     }
 
+    /* Cannot combine the --filesize option with other options */
+    if(print_filesize && 
+       (clear_status_flags || remove_cache_image || increment_eoa_eof)) {
+        error_msg("Cannot combine --filesize with other options\n");
+        h5tools_setstatus(EXIT_FAILURE);
+        goto done;
+    }
+
     /* Duplicate the file name */
     fname = HDstrdup(fname_g);
 
@@ -228,7 +300,7 @@ main (int argc, const char *argv[])
     /* -s option */
     if(clear_status_flags) { 
         /* Set to clear the status_flags in the file's superblock */
-        /* This is a private property used by h5clear only */
+        /* Activate this private property */
         if(H5Pset(fapl, H5F_ACS_CLEAR_STATUS_FLAGS_NAME, &clear_status_flags) < 0) {
             error_msg("H5Pset\n");
             h5tools_setstatus(EXIT_FAILURE);
@@ -236,12 +308,64 @@ main (int argc, const char *argv[])
         }
     }
 
-    if((fid = h5tools_fopen(fname, H5F_ACC_RDWR, fapl, NULL, NULL, (size_t)0)) < 0) {
+    /* --increment option */
+    if(increment_eoa_eof) { 
+        /* Activate this private property */
+        if(H5Pset(fapl, H5F_ACS_SKIP_EOF_CHECK_NAME, &increment_eoa_eof) < 0) {
+            error_msg("H5Pset\n");
+            h5tools_setstatus(EXIT_FAILURE);
+            goto done;
+        }
+        /* Activate this private property */
+        if(H5Pset(fapl, H5F_ACS_NULL_FSM_ADDR_NAME, &increment_eoa_eof) < 0) {
+            error_msg("H5Pset\n");
+            h5tools_setstatus(EXIT_FAILURE);
+            goto done;
+        }
+    }
+
+    /* --filesize option; open the file read-only */
+    if(print_filesize) { 
+        /* Activate this private property */
+        if(H5Pset(fapl, H5F_ACS_SKIP_EOF_CHECK_NAME, &print_filesize) < 0) {
+            error_msg("H5Pset\n");
+            h5tools_setstatus(EXIT_FAILURE);
+            goto done;
+        }
+        flags = H5F_ACC_RDONLY;
+    } 
+
+    /* Open the file */
+    if((fid = h5tools_fopen(fname, flags, fapl, NULL, NULL, (size_t)0)) < 0) {
         error_msg("h5tools_fopen\n");
         h5tools_setstatus(EXIT_FAILURE);
         goto done;
     }
 
+    /* --filesize option */
+    if(print_filesize) {
+        h5_stat_t st;   /* Stat info call */
+        haddr_t eoa;    /* The EOA value */
+
+        /* Get the file's EOA and EOF */
+        if(H5Fget_eoa(fid, &eoa) < 0 || HDstat(fname, &st) < 0) {
+            error_msg("H5Fget_eoa or HDstat\n");
+            h5tools_setstatus(EXIT_FAILURE);
+            goto done;
+        }
+        HDfprintf(stdout, "EOA is %a; EOF is %a \n", eoa, st.st_size);
+    }
+
+    /* --increment option */
+    if(increment_eoa_eof) {
+        /* Set the file's EOA to the maximum of (EOA, EOF) + increment */
+        if(H5Fincrement_filesize(fid, increment) < 0) {
+            error_msg("H5Fset_eoa\n");
+            h5tools_setstatus(EXIT_FAILURE);
+            goto done;
+        }
+    }
+
     /* -m option */
     if(remove_cache_image) { 
         if(H5Fget_mdc_image_info(fid, &image_addr, &image_len) < 0) {
@@ -253,7 +377,9 @@ main (int argc, const char *argv[])
             warn_msg("No cache image in the file\n");
     } 
 
+
     h5tools_setstatus(EXIT_SUCCESS);
+
 done:
     if(fname)
         HDfree(fname);
diff --git a/tools/test/misc/CMakeTestsClear.cmake b/tools/test/misc/CMakeTestsClear.cmake
index 942ae7a..5efce0a 100644
--- a/tools/test/misc/CMakeTestsClear.cmake
+++ b/tools/test/misc/CMakeTestsClear.cmake
@@ -20,11 +20,19 @@
   # Copy all the HDF5 files from the source directory into the test directory
   # --------------------------------------------------------------------
   set (HDF5_TEST_FILES
+      h5clear_fsm_persist_equal.h5
+      h5clear_fsm_persist_greater.h5
+      h5clear_fsm_persist_less.h5
+      h5clear_fsm_persist_noclose.h5
+      h5clear_fsm_persist_user_equal.h5
+      h5clear_fsm_persist_user_greater.h5
+      h5clear_fsm_persist_user_less.h5
       h5clear_log_v3.h5
       h5clear_mdc_image.h5
-      mod_h5clear_mdc_image.h5
+      h5clear_status_noclose.h5
       latest_h5clear_log_v3.h5
       latest_h5clear_sec2_v3.h5
+      mod_h5clear_mdc_image.h5
   )
   set (HDF5_SEC2_TEST_FILES
       h5clear_sec2_v0.h5
@@ -32,10 +40,25 @@
       h5clear_sec2_v3.h5
   )
   set (HDF5_REFERENCE_TEST_FILES
-      h5clear_usage.ddl
-      h5clear_open_fail.ddl
+      h5clear_equal_after_size.ddl
+      h5clear_equal_before_size.ddl
+      h5clear_greater_after_size.ddl
+      h5clear_greater_before_size.ddl
+      h5clear_less_after_size.ddl
+      h5clear_less_before_size.ddl
       h5clear_missing_file.ddl
+      h5clear_noclose_after_size.ddl
+      h5clear_noclose_before_size.ddl
       h5clear_no_mdc_image.ddl
+      h5clear_open_fail.ddl
+      h5clear_status_noclose_after_size.ddl
+      h5clear_usage.ddl
+      h5clear_user_equal_after_size.ddl
+      h5clear_user_equal_before_size.ddl
+      h5clear_user_greater_after_size.ddl
+      h5clear_user_greater_before_size.ddl
+      h5clear_user_less_after_size.ddl
+      h5clear_user_less_before_size.ddl
   )
 
   foreach (h5_file ${HDF5_TEST_FILES} ${HDF5_SEC2_TEST_FILES} ${HDF5_REFERENCE_TEST_FILES})
@@ -270,3 +293,74 @@ endif()
   ADD_H5_TEST (latest_h5clr_log_v3 latest_h5clear_log_v3 "true")
   ADD_H5_TEST (h5clr_sec2_v0 h5clear_sec2_v0 "false")
   ADD_H5_TEST (h5clr_sec2_v2 h5clear_sec2_v2 "false")
+#
+#
+#
+# The following tests verify the filesize, increment the filesize, then verify the filesize again.
+#
+# (1) h5clear_status_noclose.h5
+# "h5clear --filesize h5clear_status_noclose.h5"        (unable to open the file because status_flags is enabled)
+# "h5clear -s --increment=0 h5clear_status_noclose.h5"  (clear status_flag, EOA = MAX(EOA, EOF) + 0)
+#                                                       (no output, check exit code)
+# "h5clear --filesize h5clear_status_noclose.h5"        (print EOA/EOF after the last action)
+  ADD_H5_CMP (h5clr_open_fail_s h5clear_open_fail 1 "--filesize" h5clear_status_noclose.h5)
+  ADD_H5_RETTEST (h5clr_mdc_image "false" "-s" "--increment=0" h5clear_status_noclose.h5)
+  ADD_H5_CMP (h5clr_no_mdc_image_m h5clear_status_noclose_after_size 0 "--filesize" h5clear_status_noclose.h5)
+#
+# (2) h5clear_fsm_persist_noclose.h5
+# "h5clear --filesize h5clear_fsm_persist_noclose.h5"       (print EOA/EOF before the next action)
+# "h5clear --increment=0 h5clear_fsm_persist_noclose.h5"    (EOA = MAX(EOA, EOF)) (no output, just check exit code)
+# "h5clear --filesize h5clear_fsm_persist_noclose.h5"       (print EOA/EOF after the last action)
+  ADD_H5_CMP (h5clr_open_fail_s h5clear_noclose_before_size 0 "--filesize" h5clear_fsm_persist_noclose.h5)
+  ADD_H5_RETTEST (h5clr_mdc_image "false" "--increment=0" h5clear_fsm_persist_noclose.h5)
+  ADD_H5_CMP (h5clr_no_mdc_image_m h5clear_noclose_after_size 0 "--filesize" h5clear_fsm_persist_noclose.h5)
+#
+# (3) h5clear_fsm_persist_equal.h5
+# "h5clear --filesize h5clear_fsm_persist_equal.h5"     (print EOA/EOF before the next action)
+# "h5clear --increment h5clear_fsm_persist_equal.h5"    (EOA = MAX(EOA, EOF) + 1M) (no output, check exit code)
+# "h5clear --filesize h5clear_fsm_persist_equal.h5"     (print EOA/EOF after the last action)
+  ADD_H5_CMP (h5clr_equal_before_size h5clear_equal_before_size 0 "--filesize" h5clear_fsm_persist_equal.h5)
+  ADD_H5_RETTEST (h5clr_equal_incr "false" "--increment" h5clear_fsm_persist_equal.h5)
+  ADD_H5_CMP (h5clr_equal_after_size h5clear_equal_after_size 0 "--filesize" h5clear_fsm_persist_equal.h5)
+#
+# (4) h5clear_fsm_persist_greater.h5
+# "h5clear --filesize h5clear_fsm_persist_greater.h5"       (print EOA/EOF before the next action)
+# "h5clear --increment=0 h5clear_fsm_persist_greater.h5"    (EOA = MAX(EOA, EOF) + 0) (no output, check exit code)
+# "h5clear --filesize h5clear_fsm_persist_greater.h5"       (print EOA/EOF after the last action)
+  ADD_H5_CMP (h5clr_greater_before_size h5clear_greater_before_size 0 "--filesize" h5clear_fsm_persist_greater.h5)
+  ADD_H5_RETTEST (h5clr_greater_incr "false" "--increment=0" h5clear_fsm_persist_greater.h5)
+  ADD_H5_CMP (h5clr_greater_after_size h5clear_greater_after_size 0 "--filesize" h5clear_fsm_persist_greater.h5)
+#
+# (5) h5clear_fsm_persist_less.h5
+# "h5clear --filesize h5clear_fsm_persist_less.h5"      (print EOA/EOF before the next action)
+# "h5clear --increment=200 h5clear_fsm_persist_less.h5" (EOA = MAX(EOA, EOF) + 200) (no output, check exit code)
+# "h5clear --filesize h5clear_fsm_persist_less.h5"      (print EOA/EOF after the last action)
+  ADD_H5_CMP (h5clr_less_before_size h5clear_less_before_size 0 "--filesize" h5clear_fsm_persist_less.h5)
+  ADD_H5_RETTEST (h5clr_less_incr "false" "--increment=200" h5clear_fsm_persist_less.h5)
+  ADD_H5_CMP (h5clr_less_after_size h5clear_less_after_size 0 "--filesize" h5clear_fsm_persist_less.h5)
+#
+# (6) h5clear_fsm_persist_user_equal.h5
+# "h5clear --filesize h5clear_fsm_persist_user_equal.h5"    (print EOA/EOF before the next action)
+# "h5clear --increment h5clear_fsm_persist_user_equal.h5"   (EOA = MAX(EOA, EOF) + 1M) (no output, check exit code)
+# "h5clear --filesize h5clear_fsm_persist_user_equal.h5"    (print EOA/EOF after the last action)
+  ADD_H5_CMP (h5clr_user_equal_before_size h5clear_user_equal_before_size 0 "--filesize" h5clear_fsm_persist_user_equal.h5)
+  ADD_H5_RETTEST (h5clr_user_equal_incr "false" "--increment" h5clear_fsm_persist_user_equal.h5)
+  ADD_H5_CMP (h5clr_user_equal_after_size h5clear_user_equal_after_size 0 "--filesize" h5clear_fsm_persist_user_equal.h5)
+#
+# (7) h5clear_fsm_persist_user_greater.h5
+# "h5clear --filesize h5clear_fsm_persist_user_greater.h5"      (print EOA/EOF before the next action)
+# "h5clear --increment=0 h5clear_fsm_persist_user_greater.h5"   (EOA = MAX(EOA, EOF) + 0) (no output, check exit code)
+# "h5clear --filesize h5clear_fsm_persist_user_greater.h5"      (print EOA/EOF after the last action)
+  ADD_H5_CMP (h5clr_user_greater_before_size h5clear_user_greater_before_size 0 "--filesize" h5clear_fsm_persist_user_greater.h5)
+  ADD_H5_RETTEST (h5clr_user_greater_incr "false" "--increment=0" h5clear_fsm_persist_user_greater.h5)
+  ADD_H5_CMP (h5clr_user_greater_after_size h5clear_user_greater_after_size 0 "--filesize" h5clear_fsm_persist_user_greater.h5)
+#
+# (8) h5clear_fsm_persist_user_less.h5
+# "h5clear --filesize h5clear_fsm_persist_user_greater.h5"      (print EOA/EOF before the next action)
+# "h5clear --increment=0 h5clear_fsm_persist_user_greater.h5"   (EOA = MAX(EOA, EOF) + 0) (no output, check exit code)
+# "h5clear --filesize h5clear_fsm_persist_user_greater.h5"      (print EOA/EOF after the last action)
+  ADD_H5_CMP (h5clr_user_less_before_size h5clear_user_less_before_size 0 "--filesize" h5clear_fsm_persist_user_less.h5)
+  ADD_H5_RETTEST (h5clr_user_less_incr "false" "--increment=0" h5clear_fsm_persist_user_less.h5)
+  ADD_H5_CMP (h5clr_user_less_after_size h5clear_user_less_after_size 0 "--filesize" h5clear_fsm_persist_user_less.h5)
+#
+#
diff --git a/tools/test/misc/h5clear_gentest.c b/tools/test/misc/h5clear_gentest.c
index 326109c..ccb510f 100644
--- a/tools/test/misc/h5clear_gentest.c
+++ b/tools/test/misc/h5clear_gentest.c
@@ -21,10 +21,25 @@ const char *FILENAME[] = {
     "h5clear_sec2_v2.h5"		/* 3 -- sec2 file with superblock version 2 */
 };
 
+const char *FILENAME_ENHANCE[] = {
+    "h5clear_fsm_persist_equal.h5",         /* 0: persisting free-space, stored EOA = actual EOF */
+    "h5clear_fsm_persist_greater.h5",       /* 1: persisting free-space, stored EOA > actual EOF */
+    "h5clear_fsm_persist_less.h5",          /* 2: persisting free-space, stored EOA < actual EOF */
+    "h5clear_fsm_persist_user_equal.h5",    /* 3: user block, persisting free-space, stored EOA = actual EOF */
+    "h5clear_fsm_persist_user_greater.h5",  /* 4: user block, persisting free-space, stored EOA > actual EOF */
+    "h5clear_fsm_persist_user_less.h5",     /* 5: user block, persisting free-space, stored EOA < actual EOF */
+    "h5clear_status_noclose.h5",	        /* 6 -- v3 superblock, nonzero status_flags, no flush, exit, 
+                                               stored EOA < actual EOF */
+    "h5clear_fsm_persist_noclose.h5"        /* 7 -- persisting free-space, no flush, exit, stored EOA < actual EOF */
+};
+
 #define KB 		1024U
 
 #define CACHE_IMAGE_FILE    "h5clear_mdc_image.h5"
 #define DSET                "DSET"
+#define DATASET             "dset"
+#define NUM_ELMTS           100
+#define USERBLOCK           512
 
 /*-------------------------------------------------------------------------
  * Function:	gen_cache_image_file
@@ -118,26 +133,224 @@ error:
         H5Pclose(dcpl);
     } H5E_END_TRY;
     return 1;
-}
+} /* gen_cache_image_file() */
+
+/*-------------------------------------------------------------------------
+ * Function:	gen_enhance_files
+ *
+ * Purpose:	    To create the first 6 files in FILENAME_ENHANCE[]:
+ *                  (0) FILENAME_ENHANCE[0]: "h5clear_fsm_persist_equal.h5"
+ *                  (1) FILENAME_ENHANCE[1]: "h5clear_fsm_persist_greater.h5"
+ *                  (2) FILENAME_ENHANCE[2]: "h5clear_fsm_persist_less.h5"
+ *                  (3) FILENAME_ENHANCE[3]: "h5clear_user_fsm_persist_equal.h5"
+ *                  (4) FILENAME_ENHANCE[4]: "h5clear_user_fsm_persist_greater.h5"
+ *                  (5) FILENAME_ENHANCE[5]: "h5clear_user_fsm_persist_less.h5"
+ *              After creating the files for #1, #2, #4 #5, write invalid EOA
+ *              value to the location where the EOA is stored in the superblock.
+ *              Also modify the chksum in the superblock due to this change.
+ *
+ *              The first call to this routine (without user block) will generate 
+ *              the first 3 files.
+ *              The second call to this routine (with user block) will generate
+ *              the last 3 files.
+ *
+ * Return:      Success:	0
+ *              Failure:	1
+ *
+ * Programmer:	Vailin Choi; March 2017
+ *
+ *-------------------------------------------------------------------------
+ */
+static int
+gen_enhance_files(hbool_t user)
+{
+    hid_t fid = -1;         /* File ID */
+    hid_t fcpl = -1;        /* File creation property list */
+    hid_t fapl = -1;        /* File access property list */
+    hid_t sid = -1;         /* Dataspace ID */
+    hid_t did = -1;         /* Dataset ID */
+    hsize_t dim[1];         /* Dimension sizes */
+    int data[NUM_ELMTS];    /* Buffer for data */
+    int fd = -1;            /* The file descriptor ID */
+    int64_t eoa;            /* The EOA value */
+    int32_t chksum;         /* The chksum value */
+    int i = 0 , j = 0, u = 0;   /* Local index variable */
+
+    /* Get a copy of the default file creation property */
+    if((fcpl = H5Pcreate(H5P_FILE_CREATE)) < 0)
+        goto error;
+
+    /* Check to see if user block will be added */
+    if(user) {
+        if(H5Pset_userblock(fcpl, (hsize_t)USERBLOCK) < 0)
+            goto error;
+        u = 3;
+    }
+
+    /* Set file space strategy and persisting free-space */
+    if(H5Pset_file_space_strategy(fcpl, H5F_FSPACE_STRATEGY_FSM_AGGR, TRUE, (hsize_t)1) < 0)
+        goto error;
+
+    /* 
+     * Create the file, then write invalid EOA to the file.
+     */
+    for(i = 0+u; i < 3+u; i++) {
+
+        /* Create the file with the file space strategy and persisting free-space */
+        if((fid = H5Fcreate(FILENAME_ENHANCE[i], H5F_ACC_TRUNC, fcpl, H5P_DEFAULT)) < 0)
+            goto error;
+
+        /* Create the dataset */
+        dim[0] = NUM_ELMTS;
+        if((sid = H5Screate_simple(1, dim, NULL)) < 0)
+           goto error;
+        if((did = H5Dcreate2(fid, DATASET, H5T_NATIVE_INT, sid, H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT)) < 0)
+            goto error;
+
+        for(j = 0; j < NUM_ELMTS; j++)
+            data[j] = j;
+
+        /* Write the dataset */
+        if(H5Dwrite(did, H5T_NATIVE_INT, H5S_ALL, H5S_ALL, H5P_DEFAULT, data) < 0)
+            goto error;
+
+        /* Closing */
+        if(H5Dclose(did) < 0)
+            goto error;
+        if(H5Sclose(sid) < 0)
+            goto error;
+        if(H5Fclose(fid) < 0)
+            goto error;
+
+        /* 
+         * No further action for:
+         *      --FILENAME_ENHANCE[0]: "h5clear_fsm_persist_equal.h5" 
+         *      --FILENAME_ENHANCE[3]: "h5clear_fsm_persist_user_equal.h5",
+         */
+        if(!(i % 3))
+            continue;
+        /* 
+         * For the following files:
+         *      --FILENAME_ENHANCE[1]: "h5clear_fsm_persist_greater.h5"
+         *      --FILENAME_ENHANCE[2]: "h5clear_fsm_persist_less.h5"
+         *      --FILENAME_ENHANCE[4]: "h5clear_fsm_persist_greater.h5"
+         *      --FILENAME_ENHANCE[5]: "h5clear_fsm_persist_less.h5"
+         *
+         *  Write invalid value to the location for stored eoa and 
+         *  update the chksum value.
+         */
+        /* Open the file */
+        if((fd = open(FILENAME_ENHANCE[i], O_RDWR, 0663)) < 0)
+            goto error;
+
+        switch(i) {
+            case 1: /* stored EOA is > EOF */
+                eoa = 3048;
+                chksum = 268376587;
+                break;
+
+            case 2: /* stored EOA is < EOF */
+                eoa = 512;
+                chksum = 372920305;
+                break;
+
+            case 4: /* with userblock, stored EOA > EOF */
+                eoa = 4000;
+                chksum = 4168810027;
+                break;
+
+            case 5: /* with userblock, stored EOA < EOF */
+                eoa = 3000;
+                chksum = 3716054346;
+                break;
+
+            default:
+                break;
+        }
+
+        /* location of "end of file address" */
+        if(lseek(fd, (off_t)(28+(user?USERBLOCK:0)), SEEK_SET) < 0)
+            goto error;
+
+        /* Write the bad eoa value to the file */
+        if(write(fd, &eoa, sizeof(eoa)) < 0)
+            goto error;
+
+        /* location of "superblock checksum" */
+        if(lseek(fd, (off_t)(44+(user?USERBLOCK:0)), SEEK_SET) < 0)
+            goto error;
+
+        /* Write the chksum value to the file */
+        if(write(fd, &chksum, sizeof(chksum)) < 0)
+            goto error;
+
+        /* Close the file */
+        if(close(fd) < 0)
+            goto error;
+
+    } /* end for */
+
+    /* Close the property list */
+    if(H5Pclose(fcpl) < 0)
+        goto error;
+
+    return 0;
+
+error:
+    H5E_BEGIN_TRY {
+        H5Sclose(sid);
+        H5Dclose(did);
+        H5Fclose(fid);
+        H5Pclose(fcpl);
+    } H5E_END_TRY;
+    return 1;
+} /* gen_enhance_files() */
 
 /*-------------------------------------------------------------------------
  * Function:	main
  *
- * Purpose:	To create HDF5 files with non-zero status_flags in the superblock
- *		via flushing and exiting without closing the library.
+ * Purpose:	 Generate test files used by h5clear.
  *
- *		Due to file locking, status_flags in the superblock will be 
- *		nonzero after H5Fcreate.  The library will clear status_flags
- *		on file closing.  This program, after "H5Fcreate" the files,
- *		exits without going through library closing. Thus, status_flags
- *		for these files are not cleared.
- *		The library will check consistency of status_flags when opening
- *		a file with superblock >= v3 and will return error accordingly.
- *		The library will not check status_flags when opening a file 
- *		with < v3 superblock.
+ *      (A) gen_cache_image_file():
+ *          --generate a file with cache image feature
+ *          --"h5clear_mdc_image.h5"
+ *      (B) gen_enhance_files():
+ *          --generate the first 6 files in FILENAME_ENHANCE[]:
+ *              (0) "h5clear_fsm_persist_equal.h5"
+ *              (1) "h5clear_fsm_persist_greater.h5"
+ *              (2) "h5clear_fsm_persist_less.h5"       
+ *              (3) "h5clear_fsm_persist_user_equal.h5"   
+ *              (4) "h5clear_fsm_persist_user_greater.h5"
+ *              (5) "h5clear_fsm_persist_user_less.h5"  
  *
- *		These files are used by "h5clear" to see if the tool clears
- *		status_flags properly so users can open the files afterwards.
+ *      (C) Generate the following FILENAME[] files in main():
+ *              (0a) "h5clear_sec2_v3.h5"
+ *              (0b) "latest_h5clear_sec2_v3.h5"
+ *              (1a) "h5clear_log_v3.h5",
+ *              (1b) "latest_h5clear_log_v3.h5"
+ *              (2) "h5clear_sec2_v0.h5"
+ *              (3) "h5clear_sec2_v2.h5"       
+ *              
+ *          These HDF5 files are created with non-zero status_flags in 
+ *          the superblock via flushing and exiting without closing the
+ *          library.
+ *		    Due to file locking, status_flags in the superblock will be 
+ *		    nonzero after H5Fcreate.  The library will clear status_flags
+ *		    on file closing.  
+ *          This program, after "H5Fcreate" the files, exits without
+ *		    going through library closing. Thus, status_flags for these
+ *		    files are not cleared.
+ *		    The library will check consistency of status_flags when
+ *		    opening a file with superblock >= v3 and will return error 
+ *          accordingly.
+ *		    The library will not check status_flags when opening a file 
+ *		    with < v3 superblock.
+ *		    These files are used by "h5clear" to see if the tool clears
+ *		    status_flags properly so users can open the files afterwards.
+ *      
+ *      (D) Generate the last two files in FILENAME_ENHANCE[] in main():
+ *              (6) "h5clear_status_noclose.h5",	      
+ *              (7) "h5clear_fsm_persist_noclose.h5"
  *
  * Return:	Success:	0
  *		    Failure:	1
@@ -149,20 +362,30 @@ error:
 int
 main(void)
 {
-    hid_t fid;			/* File ID */
-    hid_t fcpl;			/* File creation property list */
-    hid_t fapl, new_fapl;	/* File access property lists */
+    hid_t fid = -1;			/* File ID */
+    hid_t fcpl = -1;		/* File creation property list */
+    hid_t fapl = -1, new_fapl = -1;	/* File access property lists */
     char fname[512];		/* File name */
-    unsigned new_format;		/* To use latest library format or not */
+    unsigned new_format;    /* To use latest library format or not */
+    hid_t sid = -1;         /* Dataspace ID */
+    hid_t did = -1;         /* Dataset ID */
+    hsize_t dim[1];         /* Dimension sizes */
+    int data[NUM_ELMTS];    /* Buffer for data */
+    int i;                  /* Local index variables */
 
     /* Generate a file with cache image feature enabled */
     if(gen_cache_image_file(CACHE_IMAGE_FILE) < 0)
         goto error;
 
+    /* Generate the first 6 files in FILENAME_ENHANCE[]  */
+    if(gen_enhance_files(FALSE) < 0)
+        goto error;
+    if(gen_enhance_files(TRUE) < 0)
+        goto error;
+
     /* 
-     * Generate files with invalid status_flags 
+     * Generate files in FILENAME[]
      */
-
     /* Create a copy of the file access property list */
     if((fapl = H5Pcreate(H5P_FILE_ACCESS)) < 0)
         goto error;
@@ -174,7 +397,11 @@ main(void)
     if(H5Pset_libver_bounds(new_fapl, H5F_LIBVER_LATEST, H5F_LIBVER_LATEST) < 0)
         goto error;
 
-    /* Files created within this for loop will have v3 superblock and nonzero status_flags */
+    /* 
+     * Files created within this for loop will have v3 superblock and nonzero status_flags
+     *      --FILENAME[0]: "h5clear_sec2_v3.h5", "latest_h5clear_sec2_v3.h5"
+     *      --FILENAME[1]: "h5clear_log_v3.h5", "latest_h5clear_log_v3.h5"
+     */
     for(new_format = FALSE; new_format <= TRUE; new_format++) {
         hid_t fapl2, my_fapl;	/* File access property lists */
 
@@ -228,7 +455,8 @@ main(void)
     } /* end for */
 
     /* 
-     * Create a sec2 file with v0 superblock but nonzero status_flags
+     * Create a sec2 file with v0 superblock but nonzero status_flags:
+     *      FILENAME[2]: "h5clear_sec2_v0.h5"
      */
     if((fid = H5Fcreate(FILENAME[2], H5F_ACC_TRUNC, H5P_DEFAULT, fapl)) < 0) 
         goto error;
@@ -239,7 +467,8 @@ main(void)
 
 
     /* 
-     * Create a sec2 file with v2 superblock but nonzero status_flags
+     * Create a sec2 file with v2 superblock but nonzero status_flags:
+     *      FILENAME[3]: "h5clear_sec2_v2.h5"       
      */
     if((fcpl = H5Pcreate(H5P_FILE_CREATE)) < 0)
         goto error;
@@ -264,6 +493,100 @@ main(void)
     if(H5Pclose(fcpl) < 0)
         goto error;
 
+    /* 
+     * Create the last two files in FILENAME_ENHANCE[]:
+     * --FILENAME_ENHANCE[6]: h5clear_status_noclose.h5
+     * --FILENAME_ENHANCE[7]: h5clear_fsm_persist_noclose.h5 
+     */
+    /*
+     * FILENAME_ENHANCE[6]: h5clear_status_noclose.h5
+     *  --stored EOA < actual EOF
+     *  --version 3 superblock
+     *  --nonzero status_flags
+     *  --does not persist free-space
+     *  --does not flush the file, just exit without closing file: 
+     *  --this file is similar to the user-suppplied test file attached with HDFFV-10347
+     */
+    if((fapl = H5Pcreate(H5P_FILE_ACCESS)) < 0)
+       goto error;
+
+    /* Set to latest format */
+    if(H5Pset_libver_bounds(fapl, H5F_LIBVER_LATEST, H5F_LIBVER_LATEST) < 0)
+       goto error;
+
+    /* Create file with SWMR-write access */
+    if((fid = H5Fcreate(FILENAME_ENHANCE[6], H5F_ACC_TRUNC|H5F_ACC_SWMR_WRITE, H5P_DEFAULT, fapl)) < 0)
+        goto error;
+
+    /* Create the dataset */
+    dim[0] = NUM_ELMTS;
+    if((sid = H5Screate_simple(1, dim, NULL)) < 0)
+        goto error;
+    if((did = H5Dcreate2(fid, DATASET, H5T_NATIVE_INT, sid, H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT)) < 0)
+        goto error;
+
+    for(i = 0; i < NUM_ELMTS; i++)
+        data[i] = i;
+
+    /* Write the dataset */
+    if(H5Dwrite(did, H5T_NATIVE_INT, H5S_ALL, H5S_ALL, H5P_DEFAULT, data) < 0)
+        goto error;
+
+    /* Closing */
+    if(H5Dclose(did) < 0)
+        goto error;
+    if(H5Sclose(sid) < 0)
+        goto error;
+    if(H5Pclose(fapl) < 0)
+        goto error;
+
+    /* Does not flush and does not close the file */
+
+
+    /* 
+     * FILENAME_ENHANCE[7]: h5clear_fsm_persist_noclose.h5 
+     *  --stored EOA < actual EOF
+     *  --persisting free-space
+     *  --undefined fsinfo.eoa_pre_fsm_fsalloc
+     *  --undefined fsinfo.fs_addr
+     *  --does not flush the file, just exit without closing
+     */
+    if((fcpl = H5Pcreate(H5P_FILE_CREATE)) < 0)
+        goto error;
+
+    /* Set file space strategy and persisting free-space */
+    if(H5Pset_file_space_strategy(fcpl, H5F_FSPACE_STRATEGY_FSM_AGGR, TRUE, (hsize_t)1) < 0)
+       goto error;
+
+    /* Create the file with the set file space info */
+    if((fid = H5Fcreate(FILENAME_ENHANCE[7], H5F_ACC_TRUNC, fcpl, H5P_DEFAULT)) < 0)
+        goto error;
+
+    /* Create the dataset */
+    dim[0] = NUM_ELMTS;
+    if((sid = H5Screate_simple(1, dim, NULL)) < 0)
+        goto error;
+    if((did = H5Dcreate2(fid, DATASET, H5T_NATIVE_INT, sid, H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT)) < 0)
+        goto error;
+
+    for(i = 0; i < NUM_ELMTS; i++)
+        data[i] = i;
+
+    /* Write the dataset */
+    if(H5Dwrite(did, H5T_NATIVE_INT, H5S_ALL, H5S_ALL, H5P_DEFAULT, data) < 0)
+        goto error;
+
+    /* Closing */
+    if(H5Dclose(did) < 0)
+        goto error;
+    if(H5Sclose(sid) < 0)
+        goto error;
+    if(H5Pclose(fcpl) < 0)
+        goto error;
+
+    /* Does not flush and does not close the file */
+
+
     fflush(stdout);
     fflush(stderr);
 
diff --git a/tools/test/misc/testfiles/h5clear_equal_after_size.ddl b/tools/test/misc/testfiles/h5clear_equal_after_size.ddl
new file mode 100644
index 0000000..1b9a4e4
--- /dev/null
+++ b/tools/test/misc/testfiles/h5clear_equal_after_size.ddl
@@ -0,0 +1 @@
+EOA is 1051141; EOF is 1051141 
diff --git a/tools/test/misc/testfiles/h5clear_equal_before_size.ddl b/tools/test/misc/testfiles/h5clear_equal_before_size.ddl
new file mode 100644
index 0000000..9beed42
--- /dev/null
+++ b/tools/test/misc/testfiles/h5clear_equal_before_size.ddl
@@ -0,0 +1 @@
+EOA is 2565; EOF is 2565 
diff --git a/tools/test/misc/testfiles/h5clear_fsm_persist_equal.h5 b/tools/test/misc/testfiles/h5clear_fsm_persist_equal.h5
new file mode 100644
index 0000000..0577690
--- /dev/null
+++ b/tools/test/misc/testfiles/h5clear_fsm_persist_equal.h5
diff --git a/tools/test/misc/testfiles/h5clear_fsm_persist_greater.h5 b/tools/test/misc/testfiles/h5clear_fsm_persist_greater.h5
new file mode 100644
index 0000000..6358878
--- /dev/null
+++ b/tools/test/misc/testfiles/h5clear_fsm_persist_greater.h5
diff --git a/tools/test/misc/testfiles/h5clear_fsm_persist_less.h5 b/tools/test/misc/testfiles/h5clear_fsm_persist_less.h5
new file mode 100644
index 0000000..c1f3221
--- /dev/null
+++ b/tools/test/misc/testfiles/h5clear_fsm_persist_less.h5
diff --git a/tools/test/misc/testfiles/h5clear_fsm_persist_noclose.h5 b/tools/test/misc/testfiles/h5clear_fsm_persist_noclose.h5
new file mode 100644
index 0000000..57462db
--- /dev/null
+++ b/tools/test/misc/testfiles/h5clear_fsm_persist_noclose.h5
diff --git a/tools/test/misc/testfiles/h5clear_fsm_persist_user_equal.h5 b/tools/test/misc/testfiles/h5clear_fsm_persist_user_equal.h5
new file mode 100644
index 0000000..5389c41
--- /dev/null
+++ b/tools/test/misc/testfiles/h5clear_fsm_persist_user_equal.h5
diff --git a/tools/test/misc/testfiles/h5clear_fsm_persist_user_greater.h5 b/tools/test/misc/testfiles/h5clear_fsm_persist_user_greater.h5
new file mode 100644
index 0000000..f40e760
--- /dev/null
+++ b/tools/test/misc/testfiles/h5clear_fsm_persist_user_greater.h5
diff --git a/tools/test/misc/testfiles/h5clear_fsm_persist_user_less.h5 b/tools/test/misc/testfiles/h5clear_fsm_persist_user_less.h5
new file mode 100644
index 0000000..55d0cc5
--- /dev/null
+++ b/tools/test/misc/testfiles/h5clear_fsm_persist_user_less.h5
diff --git a/tools/test/misc/testfiles/h5clear_greater_after_size.ddl b/tools/test/misc/testfiles/h5clear_greater_after_size.ddl
new file mode 100644
index 0000000..74c8f19
--- /dev/null
+++ b/tools/test/misc/testfiles/h5clear_greater_after_size.ddl
@@ -0,0 +1 @@
+EOA is 3048; EOF is 3048 
diff --git a/tools/test/misc/testfiles/h5clear_greater_before_size.ddl b/tools/test/misc/testfiles/h5clear_greater_before_size.ddl
new file mode 100644
index 0000000..03b22fb
--- /dev/null
+++ b/tools/test/misc/testfiles/h5clear_greater_before_size.ddl
@@ -0,0 +1 @@
+EOA is 3048; EOF is 2565 
diff --git a/tools/test/misc/testfiles/h5clear_less_after_size.ddl b/tools/test/misc/testfiles/h5clear_less_after_size.ddl
new file mode 100644
index 0000000..bedf0d2
--- /dev/null
+++ b/tools/test/misc/testfiles/h5clear_less_after_size.ddl
@@ -0,0 +1 @@
+EOA is 2765; EOF is 2765 
diff --git a/tools/test/misc/testfiles/h5clear_less_before_size.ddl b/tools/test/misc/testfiles/h5clear_less_before_size.ddl
new file mode 100644
index 0000000..50ba4c4
--- /dev/null
+++ b/tools/test/misc/testfiles/h5clear_less_before_size.ddl
@@ -0,0 +1 @@
+EOA is 512; EOF is 2565 
diff --git a/tools/test/misc/testfiles/h5clear_missing_file.ddl b/tools/test/misc/testfiles/h5clear_missing_file.ddl
index 1e5150c..13eb2c9 100644
--- a/tools/test/misc/testfiles/h5clear_missing_file.ddl
+++ b/tools/test/misc/testfiles/h5clear_missing_file.ddl
@@ -4,7 +4,9 @@ usage: h5clear [OPTIONS] file_name
    -V, --version             Print version number and exit
    -s, --status              Clear the status_flags field in the file's superblock
    -m, --image               Remove the metadata cache image from the file
-
+   --filesize                Print the file's EOA and EOF
+   --increment=C             Set the file's EOA to the maximum of (EOA, EOF) + C for the file <file_name>
+                             C is >= 0; C is optional and will default to 1M when not set
 Examples of use:
 
 h5clear -s file_name
@@ -12,4 +14,10 @@ h5clear -s file_name
 
 h5clear -m file_name
   Remove the metadata cache image from the HDF5 file <file_name>.
+
+h5clear --increment file_name
+  Set the EOA to the maximum of (EOA, EOF) + 1M for the file <file_name>.
+
+h5clear --increment=512 file_name
+  Set the EOA to the maximum of (EOA, EOF) + 512 for the file <file_name>.
 h5clear error: missing file name
diff --git a/tools/test/misc/testfiles/h5clear_noclose_after_size.ddl b/tools/test/misc/testfiles/h5clear_noclose_after_size.ddl
new file mode 100644
index 0000000..7846b47
--- /dev/null
+++ b/tools/test/misc/testfiles/h5clear_noclose_after_size.ddl
@@ -0,0 +1 @@
+EOA is 2448; EOF is 2448 
diff --git a/tools/test/misc/testfiles/h5clear_noclose_before_size.ddl b/tools/test/misc/testfiles/h5clear_noclose_before_size.ddl
new file mode 100644
index 0000000..f294a6d
--- /dev/null
+++ b/tools/test/misc/testfiles/h5clear_noclose_before_size.ddl
@@ -0,0 +1 @@
+EOA is 2048; EOF is 2448 
diff --git a/tools/test/misc/testfiles/h5clear_status_noclose.h5 b/tools/test/misc/testfiles/h5clear_status_noclose.h5
new file mode 100644
index 0000000..94a950d
--- /dev/null
+++ b/tools/test/misc/testfiles/h5clear_status_noclose.h5
diff --git a/tools/test/misc/testfiles/h5clear_status_noclose_after_size.ddl b/tools/test/misc/testfiles/h5clear_status_noclose_after_size.ddl
new file mode 100644
index 0000000..7846b47
--- /dev/null
+++ b/tools/test/misc/testfiles/h5clear_status_noclose_after_size.ddl
@@ -0,0 +1 @@
+EOA is 2448; EOF is 2448 
diff --git a/tools/test/misc/testfiles/h5clear_usage.ddl b/tools/test/misc/testfiles/h5clear_usage.ddl
index a399ae7..32dd549 100644
--- a/tools/test/misc/testfiles/h5clear_usage.ddl
+++ b/tools/test/misc/testfiles/h5clear_usage.ddl
@@ -4,7 +4,9 @@ usage: h5clear [OPTIONS] file_name
    -V, --version             Print version number and exit
    -s, --status              Clear the status_flags field in the file's superblock
    -m, --image               Remove the metadata cache image from the file
-
+   --filesize                Print the file's EOA and EOF
+   --increment=C             Set the file's EOA to the maximum of (EOA, EOF) + C for the file <file_name>
+                             C is >= 0; C is optional and will default to 1M when not set
 Examples of use:
 
 h5clear -s file_name
@@ -12,3 +14,9 @@ h5clear -s file_name
 
 h5clear -m file_name
   Remove the metadata cache image from the HDF5 file <file_name>.
+
+h5clear --increment file_name
+  Set the EOA to the maximum of (EOA, EOF) + 1M for the file <file_name>.
+
+h5clear --increment=512 file_name
+  Set the EOA to the maximum of (EOA, EOF) + 512 for the file <file_name>.
diff --git a/tools/test/misc/testfiles/h5clear_user_equal_after_size.ddl b/tools/test/misc/testfiles/h5clear_user_equal_after_size.ddl
new file mode 100644
index 0000000..028e134
--- /dev/null
+++ b/tools/test/misc/testfiles/h5clear_user_equal_after_size.ddl
@@ -0,0 +1 @@
+EOA is 1051653; EOF is 1051653 
diff --git a/tools/test/misc/testfiles/h5clear_user_equal_before_size.ddl b/tools/test/misc/testfiles/h5clear_user_equal_before_size.ddl
new file mode 100644
index 0000000..ef7c391
--- /dev/null
+++ b/tools/test/misc/testfiles/h5clear_user_equal_before_size.ddl
@@ -0,0 +1 @@
+EOA is 3077; EOF is 3077 
diff --git a/tools/test/misc/testfiles/h5clear_user_greater_after_size.ddl b/tools/test/misc/testfiles/h5clear_user_greater_after_size.ddl
new file mode 100644
index 0000000..9d7de6f
--- /dev/null
+++ b/tools/test/misc/testfiles/h5clear_user_greater_after_size.ddl
@@ -0,0 +1 @@
+EOA is 4000; EOF is 4000 
diff --git a/tools/test/misc/testfiles/h5clear_user_greater_before_size.ddl b/tools/test/misc/testfiles/h5clear_user_greater_before_size.ddl
new file mode 100644
index 0000000..c3fe625
--- /dev/null
+++ b/tools/test/misc/testfiles/h5clear_user_greater_before_size.ddl
@@ -0,0 +1 @@
+EOA is 4000; EOF is 3077 
diff --git a/tools/test/misc/testfiles/h5clear_user_less_after_size.ddl b/tools/test/misc/testfiles/h5clear_user_less_after_size.ddl
new file mode 100644
index 0000000..02c0d2a
--- /dev/null
+++ b/tools/test/misc/testfiles/h5clear_user_less_after_size.ddl
@@ -0,0 +1 @@
+EOA is 3277; EOF is 3277 
diff --git a/tools/test/misc/testfiles/h5clear_user_less_before_size.ddl b/tools/test/misc/testfiles/h5clear_user_less_before_size.ddl
new file mode 100644
index 0000000..0651c2b
--- /dev/null
+++ b/tools/test/misc/testfiles/h5clear_user_less_before_size.ddl
@@ -0,0 +1 @@
+EOA is 3000; EOF is 3077 
diff --git a/tools/test/misc/testh5clear.sh.in b/tools/test/misc/testh5clear.sh.in
index 2966b2c..11c2ff9 100644
--- a/tools/test/misc/testh5clear.sh.in
+++ b/tools/test/misc/testh5clear.sh.in
@@ -66,6 +66,21 @@ $SRC_H5CLEAR_TESTFILES/h5clear_usage.ddl
 $SRC_H5CLEAR_TESTFILES/h5clear_open_fail.ddl
 $SRC_H5CLEAR_TESTFILES/h5clear_missing_file.ddl
 $SRC_H5CLEAR_TESTFILES/h5clear_no_mdc_image.ddl
+$SRC_H5CLEAR_TESTFILES/h5clear_status_noclose_after_size.ddl
+$SRC_H5CLEAR_TESTFILES/h5clear_noclose_before_size.ddl
+$SRC_H5CLEAR_TESTFILES/h5clear_noclose_after_size.ddl
+$SRC_H5CLEAR_TESTFILES/h5clear_equal_before_size.ddl
+$SRC_H5CLEAR_TESTFILES/h5clear_equal_after_size.ddl
+$SRC_H5CLEAR_TESTFILES/h5clear_greater_before_size.ddl
+$SRC_H5CLEAR_TESTFILES/h5clear_greater_after_size.ddl
+$SRC_H5CLEAR_TESTFILES/h5clear_less_before_size.ddl
+$SRC_H5CLEAR_TESTFILES/h5clear_less_after_size.ddl
+$SRC_H5CLEAR_TESTFILES/h5clear_user_equal_before_size.ddl
+$SRC_H5CLEAR_TESTFILES/h5clear_user_equal_after_size.ddl
+$SRC_H5CLEAR_TESTFILES/h5clear_user_greater_before_size.ddl
+$SRC_H5CLEAR_TESTFILES/h5clear_user_greater_after_size.ddl
+$SRC_H5CLEAR_TESTFILES/h5clear_user_less_before_size.ddl
+$SRC_H5CLEAR_TESTFILES/h5clear_user_less_after_size.ddl
 $SRC_H5CLEAR_TESTFILES/h5clear_sec2_v0.h5
 $SRC_H5CLEAR_TESTFILES/h5clear_sec2_v2.h5
 $SRC_H5CLEAR_TESTFILES/h5clear_sec2_v3.h5
@@ -74,6 +89,14 @@ $SRC_H5CLEAR_TESTFILES/latest_h5clear_log_v3.h5
 $SRC_H5CLEAR_TESTFILES/latest_h5clear_sec2_v3.h5
 $SRC_H5CLEAR_TESTFILES/h5clear_mdc_image.h5
 $SRC_H5CLEAR_TESTFILES/mod_h5clear_mdc_image.h5
+$SRC_H5CLEAR_TESTFILES/h5clear_status_noclose.h5
+$SRC_H5CLEAR_TESTFILES/h5clear_fsm_persist_noclose.h5
+$SRC_H5CLEAR_TESTFILES/h5clear_fsm_persist_equal.h5
+$SRC_H5CLEAR_TESTFILES/h5clear_fsm_persist_greater.h5
+$SRC_H5CLEAR_TESTFILES/h5clear_fsm_persist_less.h5
+$SRC_H5CLEAR_TESTFILES/h5clear_fsm_persist_user_equal.h5
+$SRC_H5CLEAR_TESTFILES/h5clear_fsm_persist_user_greater.h5
+$SRC_H5CLEAR_TESTFILES/h5clear_fsm_persist_user_less.h5
 "
 
 COPY_TESTFILES_TO_TESTDIR()
@@ -152,7 +175,8 @@ TOOLTEST_OUT() {
     fname=$1
     option1=$2
     option2=$3
-    expected=$4
+    option3=$4
+    expected=$5
     # Prepare expected and actual output
     expect="$TESTDIR/$expected"
     actual="$TESTDIR/`basename $expected .ddl`.out"
@@ -161,10 +185,10 @@ TOOLTEST_OUT() {
     actual_err_sav=${actual_err}-sav
 
     # Run test.
-    TESTING $H5CLEAR $option1 $option2 $fname
+    TESTING $H5CLEAR $option1 $option2 $option3 $option4 $fname
     (
         cd $TESTDIR
-        $RUNSERIAL $H5CLEAR_BIN $option1 $option2 $fname
+        $RUNSERIAL $H5CLEAR_BIN $option1 $option2 $option3 $option4 $fname
     ) >$actual 2>$actual_err
     cp $actual $actual_sav
     cp $actual_err $actual_err_sav
@@ -245,17 +269,16 @@ $CP -f $TESTDIR/h5clear_sec2_v3.h5 $TESTDIR/orig_h5clear_sec2_v3.h5
 # "h5clear -m -s junk.h5"                   (valid 2 options, nonexisting file)
 # "h5clear -m orig_h5clear_sec2_v2.h5"      (valid 1 option, existing file, no cache image)
 # "h5clear -s -m orig_h5clear_sec2_v0.h5"   (valid 2 options, existing file, no cache image)
-TOOLTEST_OUT "" -h "" h5clear_usage.ddl
-TOOLTEST_OUT "" "" "" h5clear_usage.ddl
-TOOLTEST_OUT junk.h5 "" "" h5clear_usage.ddl
-TOOLTEST_OUT orig_h5clear_sec2_v3.h5 "" "" h5clear_usage.ddl
-TOOLTEST_OUT "" -m "" h5clear_missing_file.ddl
-TOOLTEST_OUT junk.h5 -s "" h5clear_open_fail.ddl
-TOOLTEST_OUT "" -m -s h5clear_missing_file.ddl
-TOOLTEST_OUT junk.h5 -m -s h5clear_open_fail.ddl
-TOOLTEST_OUT orig_h5clear_sec2_v2.h5 -m "" h5clear_no_mdc_image.ddl
-TOOLTEST_OUT orig_h5clear_sec2_v0.h5 -s -m h5clear_no_mdc_image.ddl
-#
+TOOLTEST_OUT "" -h "" "" h5clear_usage.ddl
+TOOLTEST_OUT "" "" "" "" h5clear_usage.ddl
+TOOLTEST_OUT junk.h5 "" "" "" h5clear_usage.ddl
+TOOLTEST_OUT orig_h5clear_sec2_v3.h5 "" "" "" h5clear_usage.ddl
+TOOLTEST_OUT "" -m "" "" h5clear_missing_file.ddl
+TOOLTEST_OUT junk.h5 -s "" "" h5clear_open_fail.ddl
+TOOLTEST_OUT "" -m -s "" h5clear_missing_file.ddl
+TOOLTEST_OUT junk.h5 -m -s "" h5clear_open_fail.ddl
+TOOLTEST_OUT orig_h5clear_sec2_v2.h5 -m "" "" h5clear_no_mdc_image.ddl
+TOOLTEST_OUT orig_h5clear_sec2_v0.h5 -s -m "" h5clear_no_mdc_image.ddl
 #
 #
 # The following are tests to verify the expected exit code from h5clear:
@@ -285,8 +308,8 @@ TOOLTEST h5clear_sec2_v0.h5 -l -m $FAIL
 #
 #
 # h5clear_mdc_image.h5 already has cache image removed earlier, verify the expected warning from h5clear:
-TOOLTEST_OUT mod_h5clear_mdc_image.h5 -m "" h5clear_no_mdc_image.ddl
-TOOLTEST_OUT mod_h5clear_mdc_image.h5 -s -m h5clear_no_mdc_image.ddl
+TOOLTEST_OUT mod_h5clear_mdc_image.h5 -m "" "" h5clear_no_mdc_image.ddl
+TOOLTEST_OUT mod_h5clear_mdc_image.h5 -s -m "" h5clear_no_mdc_image.ddl
 #
 #
 #
@@ -319,6 +342,73 @@ OPEN_CHK h5clear_sec2_v2.h5 $SUCCEED
 #
 #
 #
+# (1) h5clear_status_noclose.h5 
+# "h5clear --filesize h5clear_status_noclose.h5"        (unable to open the file because status_flag is on)
+# "h5clear -s --increment=0 h5clear_status_noclose.h5"  (clear status_flag, EOA = MAX(EOA, EOF) + 0) 
+#                                                       (no output, check exit code)
+# "h5clear --filesize h5clear_status_noclose_user.h5"   (print EOA/EOF after the last action)
+TOOLTEST_OUT h5clear_status_noclose.h5 --filesize "" "" h5clear_open_fail.ddl
+TOOLTEST h5clear_status_noclose.h5 -s --increment=0 $SUCCEED
+TOOLTEST_OUT h5clear_status_noclose.h5 --filesize "" "" h5clear_status_noclose_after_size.ddl
+#
+# (2) h5clear_fsm_persist_noclose.h5 
+# "h5clear --filesize h5clear_fsm_persist_noclose.h5"       (print EOA/EOF before the next action)
+# "h5clear --increment=0 h5clear_fsm_persist_noclose.h5"    (EOA = MAX(EOA, EOF)) (no output, check exit code)
+# "h5clear --filesize h5clear_fsm_persist_noclose.h5"       (print EOA/EOF after the last action)
+TOOLTEST_OUT h5clear_fsm_persist_noclose.h5 --filesize "" "" h5clear_noclose_before_size.ddl
+TOOLTEST h5clear_fsm_persist_noclose.h5 --increment=0 "" $SUCCEED
+TOOLTEST_OUT h5clear_fsm_persist_noclose.h5 --filesize "" "" h5clear_noclose_after_size.ddl
+#
+# (3) h5clear_fsm_persist_equal.h5
+# "h5clear --filesize h5clear_fsm_persist_equal.h5"     (print EOA/EOF before the next action)
+# "h5clear --increment h5clear_fsm_persist_equal.h5"    (EOA = MAX(EOA, EOF) + 1M) (no output, check exit code)
+# "h5clear --filesize h5clear_fsm_persist_equal.h5"     (print EOA/EOF after the last action)
+TOOLTEST_OUT h5clear_fsm_persist_equal.h5 --filesize "" "" h5clear_equal_before_size.ddl
+TOOLTEST h5clear_fsm_persist_equal.h5 --increment "" $SUCCEED 
+TOOLTEST_OUT h5clear_fsm_persist_equal.h5 --filesize "" "" h5clear_equal_after_size.ddl
+#
+# (4) h5clear_fsm_persist_greater.h5
+# "h5clear --filesize h5clear_fsm_persist_greater.h5"       (print EOA/EOF before the next action)
+# "h5clear --increment=0 h5clear_fsm_persist_greater.h5"    (EOA = MAX(EOA, EOF) + 0) (no output, check exit code)
+# "h5clear --filesize h5clear_fsm_persist_greater.h5"       (print EOA/EOF after the last action)
+TOOLTEST_OUT h5clear_fsm_persist_greater.h5 --filesize "" "" h5clear_greater_before_size.ddl
+TOOLTEST h5clear_fsm_persist_greater.h5 --increment=0 "" $SUCCEED 
+TOOLTEST_OUT h5clear_fsm_persist_greater.h5 --filesize "" "" h5clear_greater_after_size.ddl
+#
+# (5) h5clear_fsm_persist_less.h5
+# "h5clear --filesize h5clear_fsm_persist_less.h5"      (print EOA/EOF before the next action)
+# "h5clear --increment=200 h5clear_fsm_persist_less.h5" (EOA = MAX(EOA, EOF) + 200) (no output, check exit code)
+# "h5clear --filesize h5clear_fsm_persist_less.h5"      (print EOA/EOF after the last action)
+TOOLTEST_OUT h5clear_fsm_persist_less.h5 --filesize "" "" h5clear_less_before_size.ddl
+TOOLTEST h5clear_fsm_persist_less.h5 --increment=200 "" $SUCCEED 
+TOOLTEST_OUT h5clear_fsm_persist_less.h5 --filesize "" "" h5clear_less_after_size.ddl
+#
+# (6) h5clear_fsm_persist_user_equal.h5
+# "h5clear --filesize h5clear_fsm_persist_user_equal.h5"    (print EOA/EOF before the next action)
+# "h5clear --increment h5clear_fsm_persist_user_equal.h5"   (EOA = MAX(EOA, EOF) + 1M) (no output, check exit code)
+# "h5clear --filesize h5clear_fsm_persist_user_equal.h5"    (print EOA/EOF after the last action)
+TOOLTEST_OUT h5clear_fsm_persist_user_equal.h5 --filesize "" "" h5clear_user_equal_before_size.ddl
+TOOLTEST h5clear_fsm_persist_user_equal.h5 --increment "" $SUCCEED 
+TOOLTEST_OUT h5clear_fsm_persist_user_equal.h5 --filesize "" "" h5clear_user_equal_after_size.ddl
+#
+# (7) h5clear_fsm_persist_user_greater.h5
+# "h5clear --filesize h5clear_fsm_persist_user_greater.h5"      (print EOA/EOF before the next action)
+# "h5clear --increment=0 h5clear_fsm_persist_user_greater.h5"   (EOA = MAX(EOA, EOF) + 0) (no output, check exit code)
+# "h5clear --filesize h5clear_fsm_persist_user_greater.h5"      (print EOA/EOF after the last action)
+TOOLTEST_OUT h5clear_fsm_persist_user_greater.h5 --filesize "" "" h5clear_user_greater_before_size.ddl
+TOOLTEST h5clear_fsm_persist_user_greater.h5 --increment=0 "" $SUCCEED 
+TOOLTEST_OUT h5clear_fsm_persist_user_greater.h5 --filesize "" "" h5clear_user_greater_after_size.ddl
+#
+# (8) h5clear_fsm_persist_user_less.h5
+# "h5clear --filesize h5clear_fsm_persist_user_less.h5"         (print EOA/EOF before the next action)
+# "h5clear --increment=200 h5clear_fsm_persist_user_less.h5"    (EOA = MAX(EOA, EOF) + 200) (no output, check exit code)
+# "h5clear --filesize h5clear_fsm_persist_user_less.h5"         (print EOA/EOF after the last action)
+TOOLTEST_OUT h5clear_fsm_persist_user_less.h5 --filesize "" "" h5clear_user_less_before_size.ddl
+TOOLTEST h5clear_fsm_persist_user_less.h5 --increment=200 "" $SUCCEED 
+TOOLTEST_OUT h5clear_fsm_persist_user_less.h5 --filesize "" "" h5clear_user_less_after_size.ddl
+#
+#
+#
 # Clean up test files
 if test -z "$HDF5_NOCLEANUP"; then
    rm -f h5clear_*.h5 latest_h5clear*.h5