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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_ */