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rf_reconmap.h revision 1.4 
      1 /*	$NetBSD: rf_reconmap.h,v 1.4 2001/10/04 15:58:55 oster Exp $	*/
      2 /*
      3  * Copyright (c) 1995 Carnegie-Mellon University.
      4  * All rights reserved.
      5  *
      6  * Author: Mark Holland
      7  *
      8  * Permission to use, copy, modify and distribute this software and
      9  * its documentation is hereby granted, provided that both the copyright
     10  * notice and this permission notice appear in all copies of the
     11  * software, derivative works or modified versions, and any portions
     12  * thereof, and that both notices appear in supporting documentation.
     13  *
     14  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
     15  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
     16  * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
     17  *
     18  * Carnegie Mellon requests users of this software to return to
     19  *
     20  *  Software Distribution Coordinator  or  Software.Distribution (at) CS.CMU.EDU
     21  *  School of Computer Science
     22  *  Carnegie Mellon University
     23  *  Pittsburgh PA 15213-3890
     24  *
     25  * any improvements or extensions that they make and grant Carnegie the
     26  * rights to redistribute these changes.
     27  */
     28 
     29 /******************************************************************************
     30  * rf_reconMap.h -- Header file describing reconstruction status data structure
     31  ******************************************************************************/
     32 
     33 #ifndef _RF__RF_RECONMAP_H_
     34 #define _RF__RF_RECONMAP_H_
     35 
     36 #include <dev/raidframe/raidframevar.h>
     37 
     38 #include "rf_threadstuff.h"
     39 
     40 /*
     41  * Main reconstruction status descriptor. size and maxsize are used for
     42  * monitoring only:  they have no function for reconstruction.
     43  */
     44 struct RF_ReconMap_s {
     45 	RF_SectorCount_t sectorsPerReconUnit;	/* sectors per reconstruct
     46 						 * unit */
     47 	RF_SectorCount_t sectorsInDisk;	/* total sectors in disk */
     48 	RF_SectorCount_t unitsLeft;	/* recon units left to recon */
     49 	RF_ReconUnitCount_t totalRUs;	/* total recon units on disk */
     50 	RF_ReconUnitCount_t spareRUs;	/* total number of spare RUs on failed
     51 					 * disk */
     52 	RF_StripeCount_t totalParityStripes;	/* total number of parity
     53 						 * stripes in array */
     54 	u_int   size;		/* overall size of this structure */
     55 	u_int   maxSize;	/* maximum size so far */
     56 	RF_ReconMapListElem_t **status;	/* array of ptrs to list elements */
     57 	        RF_DECLARE_MUTEX(mutex)
     58 };
     59 /* a list element */
     60 struct RF_ReconMapListElem_s {
     61 	RF_SectorNum_t startSector;	/* bounding sect nums on this block */
     62 	RF_SectorNum_t stopSector;
     63 	RF_ReconMapListElem_t *next;	/* next element in list */
     64 };
     65 
     66 RF_ReconMap_t *
     67 rf_MakeReconMap(RF_Raid_t * raidPtr, RF_SectorCount_t ru_sectors,
     68     RF_SectorCount_t disk_sectors, RF_ReconUnitCount_t spareUnitsPerDisk);
     69 
     70 void
     71 rf_ReconMapUpdate(RF_Raid_t * raidPtr, RF_ReconMap_t * mapPtr,
     72     RF_SectorNum_t startSector, RF_SectorNum_t stopSector);
     73 
     74 void    rf_FreeReconMap(RF_ReconMap_t * mapPtr);
     75 
     76 int     rf_CheckRUReconstructed(RF_ReconMap_t * mapPtr, RF_SectorNum_t startSector);
     77 
     78 RF_ReconUnitCount_t rf_UnitsLeftToReconstruct(RF_ReconMap_t * mapPtr);
     79 
     80 void
     81 rf_PrintReconMap(RF_Raid_t * raidPtr, RF_ReconMap_t * mapPtr,
     82     RF_RowCol_t frow, RF_RowCol_t fcol);
     83 
     84 void    rf_PrintReconSchedule(RF_ReconMap_t * mapPtr, struct timeval * starttime);
     85 
     86 #endif				/* !_RF__RF_RECONMAP_H_ */
     87