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@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