156 строки
4.5 KiB
C
156 строки
4.5 KiB
C
/*
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* Copyright (c) 2004-2005 The Trustees of Indiana University and Indiana
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* University Research and Technology
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* Corporation. All rights reserved.
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* Copyright (c) 2004-2006 The University of Tennessee and The University
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* of Tennessee Research Foundation. All rights
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* reserved.
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* Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
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* University of Stuttgart. All rights reserved.
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* Copyright (c) 2004-2005 The Regents of the University of California.
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* All rights reserved.
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* Copyright (c) 2008-2011 University of Houston. All rights reserved.
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* $COPYRIGHT$
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*
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* Additional copyrights may follow
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*
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* $HEADER$
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*
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* These symbols are in a file by themselves to provide nice linker
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* semantics. Since linkers generally pull in symbols by object fules,
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* keeping these symbols as the only symbols in this file prevents
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* utility programs such as "ompi_info" from having to import entire
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* modules just to query their version and parameters
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*/
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#include "ompi_config.h"
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#include "mpi.h"
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#include "ompi/mca/fs/fs.h"
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#include "ompi/mca/fs/base/base.h"
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#include "ompi/mca/fs/lustre/fs_lustre.h"
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#ifdef HAVE_SYS_STATFS_H
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#include <sys/statfs.h> /* or <sys/vfs.h> */
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#endif
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#ifdef HAVE_SYS_PARAM_H
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#include <sys/param.h>
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#endif
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#ifdef HAVE_SYS_MOUNT_H
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#include <sys/mount.h>
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#endif
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#ifdef HAVE_SYS_STAT_H
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#include <sys/stat.h>
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#endif
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#include <sys/ioctl.h>
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#include <lustre/liblustreapi.h>
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#include <lustre/lustre_user.h>
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/*
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* *******************************************************************
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* ************************ actions structure ************************
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* *******************************************************************
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*/
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static mca_fs_base_module_1_0_0_t lustre = {
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mca_fs_lustre_module_init, /* initalise after being selected */
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mca_fs_lustre_module_finalize, /* close a module on a communicator */
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mca_fs_lustre_file_open,
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mca_fs_lustre_file_close,
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mca_fs_lustre_file_delete,
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mca_fs_lustre_file_set_size,
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mca_fs_lustre_file_get_size,
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mca_fs_lustre_file_set_info,
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mca_fs_lustre_file_sync
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};
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/*
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* *******************************************************************
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* ************************* structure ends **************************
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* *******************************************************************
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*/
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int mca_fs_lustre_component_init_query(bool enable_progress_threads,
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bool enable_mpi_threads)
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{
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/* Nothing to do */
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return OMPI_SUCCESS;
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}
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struct mca_fs_base_module_1_0_0_t *
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mca_fs_lustre_component_file_query (mca_io_ompio_file_t *fh, int *priority)
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{
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int err;
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char *dir;
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struct statfs fsbuf;
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char *tmp;
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/* The code in this function is based on the ADIO FS selection in ROMIO
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* Copyright (C) 1997 University of Chicago.
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* See COPYRIGHT notice in top-level directory.
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*/
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*priority = mca_fs_lustre_priority;
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tmp = strchr (fh->f_filename, ':');
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if (!tmp) {
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if (OMPIO_ROOT == fh->f_rank) {
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do {
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err = statfs (fh->f_filename, &fsbuf);
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} while (err && (errno == ESTALE));
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if (err && (errno == ENOENT)) {
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mca_fs_base_get_parent_dir (fh->f_filename, &dir);
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err = statfs (dir, &fsbuf);
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free (dir);
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}
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#ifndef LL_SUPER_MAGIC
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#define LL_SUPER_MAGIC 0x0BD00BD0
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#endif
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if (fsbuf.f_type == LL_SUPER_MAGIC) {
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fh->f_fstype = LUSTRE;
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}
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}
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fh->f_comm->c_coll.coll_bcast (&(fh->f_fstype),
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1,
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MPI_INT,
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OMPIO_ROOT,
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fh->f_comm,
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fh->f_comm->c_coll.coll_bcast_module);
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}
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else {
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if (!strncmp(fh->f_filename, "lustre:", 7) ||
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!strncmp(fh->f_filename, "LUSTRE:", 7)) {
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fh->f_fstype = LUSTRE;
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}
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}
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if (LUSTRE == fh->f_fstype) {
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if (*priority < 50) {
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*priority = 50;
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return &lustre;
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}
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}
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return NULL;
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}
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int mca_fs_lustre_component_file_unquery (mca_io_ompio_file_t *file)
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{
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/* This function might be needed for some purposes later. for now it
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* does not have anything to do since there are no steps which need
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* to be undone if this module is not selected */
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return OMPI_SUCCESS;
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}
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int mca_fs_lustre_module_init (mca_io_ompio_file_t *file)
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{
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return OMPI_SUCCESS;
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}
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int mca_fs_lustre_module_finalize (mca_io_ompio_file_t *file)
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{
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return OMPI_SUCCESS;
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}
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