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
  20 enum pnfs_iomode {
  21         IOMODE_READ = 1,
  22         IOMODE_RW = 2,
  23         IOMODE_ANY = 3,
  24 };
  25
  26 /* Layout Structure */
  27 enum 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
  34 struct 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__ */