diff options
Diffstat (limited to 'src/H5D.c')
| -rw-r--r-- | src/H5D.c | 47 |
1 files changed, 27 insertions, 20 deletions
@@ -1099,13 +1099,16 @@ H5D_open(H5G_t *loc, const char *name) #ifdef HAVE_PARALLEL /* * If the dataset uses chunk storage and is accessed via - * parallel I/O, allocate file space for all chunks now. + * parallel I/O, and file is open writable, + * allocate file space for chunks that have not been + * allocated in its "previous access". */ - if (dataset->ent.file->shared->access_parms->driver == H5F_LOW_MPIO && - dataset->layout.type == H5D_CHUNKED){ + if (dataset->ent.file->shared->access_parms->driver==H5F_LOW_MPIO && + dataset->layout.type == H5D_CHUNKED && + (f->intent & H5F_ACC_RDWR)){ if (H5D_allocate(dataset)==FAIL){ HGOTO_ERROR(H5E_DATASET, H5E_CANTINIT, NULL, - "fail in file space allocation for chunks"); + "fail in file space allocation dataset"); } } #endif /* HAVE_PARALLEL */ @@ -1890,25 +1893,27 @@ H5D_extend (H5D_t *dataset, const hsize_t *size) } /* Save the new dataspace in the file if necessary */ - if (changed>0 && - H5S_modify (&(dataset->ent), space)<0) { - HGOTO_ERROR (H5E_DATASET, H5E_WRITEERROR, FAIL, + if (changed>0){ + if (H5S_modify (&(dataset->ent), space)<0) { + HGOTO_ERROR (H5E_DATASET, H5E_WRITEERROR, FAIL, "unable to update file with new dataspace"); - } - + } #ifdef HAVE_PARALLEL - /* - * If the dataset uses chunk storage and is accessed via - * parallel I/O, need to allocate file space for all chunks now. - */ - if (/*dataset->ent.file->shared->access_parms->driver == H5F_LOW_MPIO &&*/ - dataset->layout.type == H5D_CHUNKED){ - if (H5D_allocate(dataset)==FAIL){ - HGOTO_ERROR(H5E_DATASET, H5E_CANTINIT, FAIL, - "fail in file space allocation for chunks"); + /* + * If the dataset uses chunk storage and is accessed via + * parallel I/O, need to allocate file space for all extended + * chunks now. + */ + if (dataset->ent.file->shared->access_parms->driver==H5F_LOW_MPIO && + dataset->layout.type==H5D_CHUNKED){ + if (H5D_allocate(dataset)==FAIL){ + HGOTO_ERROR(H5E_DATASET, H5E_CANTINIT, FAIL, + "fail in file space allocation for chunks"); + } } - } #endif /* HAVE_PARALLEL */ + } + ret_value = SUCCEED; @@ -1993,7 +1998,7 @@ static herr_t H5D_allocate (H5D_t *dataset) { H5S_t *space = NULL; - herr_t ret_value = SUCCEED; + herr_t ret_value = FAIL; hsize_t space_dim[H5O_LAYOUT_NDIMS]; intn space_ndims; H5O_layout_t *layout; @@ -2040,6 +2045,8 @@ printf("Enter %s:\n", FUNC); HGOTO_ERROR(H5E_DATASET, H5E_UNSUPPORTED, FAIL, "not implemented yet"); } + ret_value = SUCCEED; + done: if (space) H5S_close(space); |