LXR linux/fs/exofs/pnfs.h

   1/*
   2 * Copyright (C) 2008, 2009
   3 * Boaz Harrosh <bharrosh@panasas.com>
   4 *
   5 * This file is part of exofs.
   6 *
   7 * exofs is free software; you can redistribute it and/or modify it under the
   8 * terms of the GNU General Public License  version 2 as published by the Free
   9 * Software Foundation.
  10 *
  11 */
  12
  13/* FIXME: Remove this file once pnfs hits mainline */
  14
  15#ifndef __EXOFS_PNFS_H__
  16#define __EXOFS_PNFS_H__
  17
  18#if ! defined(__PNFS_OSD_XDR_H__)
  19
  20enum pnfs_iomode {
  21        IOMODE_READ = 1,
  22        IOMODE_RW = 2,
  23        IOMODE_ANY = 3,
  24};
  25
  26/* Layout Structure */
  27enum pnfs_osd_raid_algorithm4 {
  28        PNFS_OSD_RAID_0         = 1,
  29        PNFS_OSD_RAID_4         = 2,
  30        PNFS_OSD_RAID_5         = 3,
  31        PNFS_OSD_RAID_PQ        = 4     /* Reed-Solomon P+Q */
  32};
  33
  34struct pnfs_osd_data_map {
  35        u32     odm_num_comps;
  36        u64     odm_stripe_unit;
  37        u32     odm_group_width;
  38        u32     odm_group_depth;
  39        u32     odm_mirror_cnt;
  40        u32     odm_raid_algorithm;
  41};
  42
  43#endif /* ! defined(__PNFS_OSD_XDR_H__) */
  44
  45#endif /* __EXOFS_PNFS_H__ */
  46