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(CONFIG_PNFS)
  19
  20
  21 /* FIXME: move this file to: linux/exportfs/pnfs_osd_xdr.h */
  22 #include "../nfs/objlayout/pnfs_osd_xdr.h"
  23
  24 #else /* defined(CONFIG_PNFS) */
  25
  26 enum pnfs_iomode {
  27         IOMODE_READ = 1,
  28         IOMODE_RW = 2,
  29         IOMODE_ANY = 3,
  30 };
  31
  32 /* Layout Structure */
  33 enum pnfs_osd_raid_algorithm4 {
  34         PNFS_OSD_RAID_0         = 1,
  35         PNFS_OSD_RAID_4         = 2,
  36         PNFS_OSD_RAID_5         = 3,
  37         PNFS_OSD_RAID_PQ        = 4     /* Reed-Solomon P+Q */
  38 };
  39
  40 struct pnfs_osd_data_map {
  41         u32     odm_num_comps;
  42         u64     odm_stripe_unit;
  43         u32     odm_group_width;
  44         u32     odm_group_depth;
  45         u32     odm_mirror_cnt;
  46         u32     odm_raid_algorithm;
  47 };
  48
  49 #endif /* else defined(CONFIG_PNFS) */
  50
  51 #endif /* __EXOFS_PNFS_H__ */