xref: /src/sys/dev/raidframe/rf_reconmap.h

/*	$NetBSD: rf_reconmap.h,v 1.2 1999/01/26 02:34:01 oster Exp $	*/
/*
 * Copyright (c) 1995 Carnegie-Mellon University.
 * All rights reserved.
 *
 * Author: Mark Holland
 *
 * Permission to use, copy, modify and distribute this software and
 * its documentation is hereby granted, provided that both the copyright
 * notice and this permission notice appear in all copies of the
 * software, derivative works or modified versions, and any portions
 * thereof, and that both notices appear in supporting documentation.
 *
 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
 * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
 * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
 *
 * Carnegie Mellon requests users of this software to return to
 *
 *  Software Distribution Coordinator  or  Software.Distribution (at) CS.CMU.EDU
 *  School of Computer Science
 *  Carnegie Mellon University
 *  Pittsburgh PA 15213-3890
 *
 * any improvements or extensions that they make and grant Carnegie the
 * rights to redistribute these changes.
 */

/******************************************************************************
 * rf_reconMap.h -- Header file describing reconstruction status data structure
 ******************************************************************************/

#ifndef _RF__RF_RECONMAP_H_
#define _RF__RF_RECONMAP_H_

#include "rf_types.h"
#include "rf_threadstuff.h"

/*
 * Main reconstruction status descriptor. size and maxsize are used for
 * monitoring only:  they have no function for reconstruction.
 */
struct RF_ReconMap_s {
  RF_SectorCount_t         sectorsPerReconUnit; /* sectors per reconstruct unit */
  RF_SectorCount_t         sectorsInDisk;       /* total sectors in disk */
  RF_SectorCount_t         unitsLeft;           /* recon units left to recon */
  RF_ReconUnitCount_t      totalRUs;            /* total recon units on disk */
  RF_ReconUnitCount_t      spareRUs;            /* total number of spare RUs on failed disk */
  RF_StripeCount_t         totalParityStripes;  /* total number of parity stripes in array */
  u_int                    size;				/* overall size of this structure */
  u_int                    maxSize;			    /* maximum size so far */
  RF_ReconMapListElem_t  **status;              /* array of ptrs to list elements */
  RF_DECLARE_MUTEX(mutex)
};

/* a list element */
struct RF_ReconMapListElem_s {
  RF_SectorNum_t          startSector; /* bounding sect nums on this block */
  RF_SectorNum_t          stopSector;
  RF_ReconMapListElem_t  *next;        /* next element in list */
};

RF_ReconMap_t *rf_MakeReconMap(RF_Raid_t *raidPtr, RF_SectorCount_t ru_sectors,
	RF_SectorCount_t disk_sectors, RF_ReconUnitCount_t spareUnitsPerDisk);

void rf_ReconMapUpdate(RF_Raid_t *raidPtr, RF_ReconMap_t *mapPtr,
	RF_SectorNum_t startSector, RF_SectorNum_t stopSector);

void rf_FreeReconMap(RF_ReconMap_t *mapPtr);

int rf_CheckRUReconstructed(RF_ReconMap_t *mapPtr, RF_SectorNum_t startSector);

RF_ReconUnitCount_t rf_UnitsLeftToReconstruct(RF_ReconMap_t *mapPtr);

void rf_PrintReconMap(RF_Raid_t *raidPtr, RF_ReconMap_t *mapPtr,
	RF_RowCol_t frow, RF_RowCol_t fcol);

void rf_PrintReconSchedule(RF_ReconMap_t *mapPtr, struct timeval *starttime);

#endif /* !_RF__RF_RECONMAP_H_ */