1 /* $NetBSD: rf_raid1.h,v 1.1 1998/11/13 04:20:33 oster Exp $ */ 2 /* 3 * Copyright (c) 1995 Carnegie-Mellon University. 4 * All rights reserved. 5 * 6 * Author: William V. Courtright II 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 /* header file for RAID Level 1 */ 30 31 /* 32 * : 33 * Log: rf_raid1.h,v 34 * Revision 1.17 1996/07/27 23:36:08 jimz 35 * Solaris port of simulator 36 * 37 * Revision 1.16 1996/07/13 00:00:59 jimz 38 * sanitized generalized reconstruction architecture 39 * cleaned up head sep, rbuf problems 40 * 41 * Revision 1.15 1996/07/11 19:08:00 jimz 42 * generalize reconstruction mechanism 43 * allow raid1 reconstructs via copyback (done with array 44 * quiesced, not online, therefore not disk-directed) 45 * 46 * Revision 1.14 1996/06/19 22:23:01 jimz 47 * parity verification is now a layout-configurable thing 48 * not all layouts currently support it (correctly, anyway) 49 * 50 * Revision 1.13 1996/06/10 11:55:47 jimz 51 * Straightened out some per-array/not-per-array distinctions, fixed 52 * a couple bugs related to confusion. Added shutdown lists. Removed 53 * layout shutdown function (now subsumed by shutdown lists). 54 * 55 * Revision 1.12 1996/06/07 22:26:27 jimz 56 * type-ify which_ru (RF_ReconUnitNum_t) 57 * 58 * Revision 1.11 1996/06/07 21:33:04 jimz 59 * begin using consistent types for sector numbers, 60 * stripe numbers, row+col numbers, recon unit numbers 61 * 62 * Revision 1.10 1996/06/03 23:28:26 jimz 63 * more bugfixes 64 * check in tree to sync for IPDS runs with current bugfixes 65 * there still may be a problem with threads in the script test 66 * getting I/Os stuck- not trivially reproducible (runs ~50 times 67 * in a row without getting stuck) 68 * 69 * Revision 1.9 1996/05/31 22:26:54 jimz 70 * fix a lot of mapping problems, memory allocation problems 71 * found some weird lock issues, fixed 'em 72 * more code cleanup 73 * 74 * Revision 1.8 1996/05/27 18:56:37 jimz 75 * more code cleanup 76 * better typing 77 * compiles in all 3 environments 78 * 79 * Revision 1.7 1996/05/24 01:59:45 jimz 80 * another checkpoint in code cleanup for release 81 * time to sync kernel tree 82 * 83 * Revision 1.6 1996/05/18 19:51:34 jimz 84 * major code cleanup- fix syntax, make some types consistent, 85 * add prototypes, clean out dead code, et cetera 86 * 87 * Revision 1.5 1996/05/03 19:35:34 wvcii 88 * moved dags to dag library 89 * 90 * Revision 1.4 1995/11/30 16:07:26 wvcii 91 * added copyright info 92 * 93 * Revision 1.3 1995/11/16 14:56:41 wvcii 94 * updated prototypes 95 * 96 * Revision 1.2 1995/11/07 15:23:01 wvcii 97 * changed RAID1DagSelect prototype 98 * function no longer generates numHdrSucc, numTermAnt 99 * 100 * Revision 1.1 1995/10/04 03:52:59 wvcii 101 * Initial revision 102 * 103 * 104 */ 105 106 #ifndef _RF__RF_RAID1_H_ 107 #define _RF__RF_RAID1_H_ 108 109 #include "rf_types.h" 110 111 int rf_ConfigureRAID1(RF_ShutdownList_t **listp, RF_Raid_t *raidPtr, 112 RF_Config_t *cfgPtr); 113 void rf_MapSectorRAID1(RF_Raid_t *raidPtr, RF_RaidAddr_t raidSector, 114 RF_RowCol_t *row, RF_RowCol_t *col, RF_SectorNum_t *diskSector, int remap); 115 void rf_MapParityRAID1(RF_Raid_t *raidPtr, RF_RaidAddr_t raidSector, 116 RF_RowCol_t *row, RF_RowCol_t *col, RF_SectorNum_t *diskSector, int remap); 117 void rf_IdentifyStripeRAID1(RF_Raid_t *raidPtr, RF_RaidAddr_t addr, 118 RF_RowCol_t **diskids, RF_RowCol_t *outRow); 119 void rf_MapSIDToPSIDRAID1(RF_RaidLayout_t *layoutPtr, 120 RF_StripeNum_t stripeID, RF_StripeNum_t *psID, 121 RF_ReconUnitNum_t *which_ru); 122 void rf_RAID1DagSelect(RF_Raid_t *raidPtr, RF_IoType_t type, 123 RF_AccessStripeMap_t *asmap, RF_VoidFuncPtr *createFunc); 124 int rf_VerifyParityRAID1(RF_Raid_t *raidPtr, RF_RaidAddr_t raidAddr, 125 RF_PhysDiskAddr_t *parityPDA, int correct_it, RF_RaidAccessFlags_t flags); 126 int rf_SubmitReconBufferRAID1(RF_ReconBuffer_t *rbuf, int keep_int, 127 int use_committed); 128 129 #endif /* !_RF__RF_RAID1_H_ */ 130