Annotation of sys/dev/raidframe/rf_reconmap.h, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: rf_reconmap.h,v 1.3 2002/12/16 07:01:05 tdeval Exp $ */
! 2: /* $NetBSD: rf_reconmap.h,v 1.3 1999/02/05 00:06:16 oster Exp $ */
! 3:
! 4: /*
! 5: * Copyright (c) 1995 Carnegie-Mellon University.
! 6: * All rights reserved.
! 7: *
! 8: * Author: Mark Holland
! 9: *
! 10: * Permission to use, copy, modify and distribute this software and
! 11: * its documentation is hereby granted, provided that both the copyright
! 12: * notice and this permission notice appear in all copies of the
! 13: * software, derivative works or modified versions, and any portions
! 14: * thereof, and that both notices appear in supporting documentation.
! 15: *
! 16: * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
! 17: * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
! 18: * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
! 19: *
! 20: * Carnegie Mellon requests users of this software to return to
! 21: *
! 22: * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
! 23: * School of Computer Science
! 24: * Carnegie Mellon University
! 25: * Pittsburgh PA 15213-3890
! 26: *
! 27: * any improvements or extensions that they make and grant Carnegie the
! 28: * rights to redistribute these changes.
! 29: */
! 30:
! 31: /******************************************************************************
! 32: * rf_reconMap.h
! 33: *
! 34: * -- Header file describing reconstruction status data structure.
! 35: ******************************************************************************/
! 36:
! 37: #ifndef _RF__RF_RECONMAP_H_
! 38: #define _RF__RF_RECONMAP_H_
! 39:
! 40: #include "rf_types.h"
! 41: #include "rf_threadstuff.h"
! 42:
! 43: /*
! 44: * Main reconstruction status descriptor; size and maxsize are used for
! 45: * monitoring only: they have no function for reconstruction.
! 46: */
! 47: struct RF_ReconMap_s {
! 48: RF_SectorCount_t sectorsPerReconUnit;
! 49: /*
! 50: * Sectors per reconstruct
! 51: * unit.
! 52: */
! 53: RF_SectorCount_t sectorsInDisk;/* Total sectors in disk. */
! 54: RF_SectorCount_t unitsLeft; /* Recon units left to recon. */
! 55: RF_ReconUnitCount_t totalRUs; /* Total recon units on disk. */
! 56: RF_ReconUnitCount_t spareRUs; /*
! 57: * Total number of spare RUs on
! 58: * failed disk.
! 59: */
! 60: RF_StripeCount_t totalParityStripes;
! 61: /*
! 62: * Total number of parity
! 63: * stripes in array.
! 64: */
! 65: u_int size; /*
! 66: * Overall size of this
! 67: * structure.
! 68: */
! 69: u_int maxSize; /* Maximum size so far. */
! 70: RF_ReconMapListElem_t **status; /*
! 71: * Array of ptrs to list
! 72: * elements.
! 73: */
! 74: RF_DECLARE_MUTEX (mutex);
! 75: };
! 76:
! 77: /* A list element. */
! 78: struct RF_ReconMapListElem_s {
! 79: /* Bounding sect nums on this block. */
! 80: RF_SectorNum_t startSector;
! 81: RF_SectorNum_t stopSector;
! 82: RF_ReconMapListElem_t *next; /* Next element in list. */
! 83: };
! 84:
! 85: RF_ReconMap_t *rf_MakeReconMap(RF_Raid_t *,
! 86: RF_SectorCount_t, RF_SectorCount_t, RF_ReconUnitCount_t);
! 87:
! 88: void rf_ReconMapUpdate(RF_Raid_t *, RF_ReconMap_t *,
! 89: RF_SectorNum_t, RF_SectorNum_t);
! 90:
! 91: void rf_FreeReconMap(RF_ReconMap_t *);
! 92:
! 93: int rf_CheckRUReconstructed(RF_ReconMap_t *, RF_SectorNum_t);
! 94:
! 95: RF_ReconUnitCount_t rf_UnitsLeftToReconstruct(RF_ReconMap_t *);
! 96:
! 97: void rf_PrintReconMap(RF_Raid_t *, RF_ReconMap_t *, RF_RowCol_t, RF_RowCol_t);
! 98:
! 99: void rf_PrintReconSchedule(RF_ReconMap_t *, struct timeval *);
! 100:
! 101: #endif /* !_RF__RF_RECONMAP_H_ */
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