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Annotation of sys/dev/raidframe/rf_reconmap.h, Revision 1.1.1.1

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_ */