38a3987b69
Carnegie Mellon University. Full RAID implementation, including levels 0, 1, 4, 5, 6, parity logging, and a few other goodies. Ported to NetBSD by Greg Oster.
109 lines
3.9 KiB
C
109 lines
3.9 KiB
C
/* $NetBSD: rf_raid4.h,v 1.1 1998/11/13 04:20:33 oster Exp $ */
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/*
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* Copyright (c) 1995 Carnegie-Mellon University.
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* All rights reserved.
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*
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* Author: Rachad Youssef
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*
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* Permission to use, copy, modify and distribute this software and
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* its documentation is hereby granted, provided that both the copyright
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* notice and this permission notice appear in all copies of the
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* software, derivative works or modified versions, and any portions
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* thereof, and that both notices appear in supporting documentation.
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*
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* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
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* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
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* FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
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*
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* Carnegie Mellon requests users of this software to return to
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*
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* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
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* School of Computer Science
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* Carnegie Mellon University
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* Pittsburgh PA 15213-3890
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*
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* any improvements or extensions that they make and grant Carnegie the
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* rights to redistribute these changes.
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*/
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/* rf_raid4.h header file for RAID Level 4 */
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/*
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* :
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* Log: rf_raid4.h,v
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* Revision 1.15 1996/07/27 23:36:08 jimz
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* Solaris port of simulator
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*
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* Revision 1.14 1996/07/13 00:00:59 jimz
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* sanitized generalized reconstruction architecture
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* cleaned up head sep, rbuf problems
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*
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* Revision 1.13 1996/06/10 11:55:47 jimz
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* Straightened out some per-array/not-per-array distinctions, fixed
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* a couple bugs related to confusion. Added shutdown lists. Removed
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* layout shutdown function (now subsumed by shutdown lists).
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*
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* Revision 1.12 1996/06/07 22:26:27 jimz
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* type-ify which_ru (RF_ReconUnitNum_t)
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*
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* Revision 1.11 1996/06/07 21:33:04 jimz
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* begin using consistent types for sector numbers,
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* stripe numbers, row+col numbers, recon unit numbers
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*
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* Revision 1.10 1996/06/03 23:28:26 jimz
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* more bugfixes
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* check in tree to sync for IPDS runs with current bugfixes
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* there still may be a problem with threads in the script test
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* getting I/Os stuck- not trivially reproducible (runs ~50 times
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* in a row without getting stuck)
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*
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* Revision 1.9 1996/05/31 22:26:54 jimz
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* fix a lot of mapping problems, memory allocation problems
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* found some weird lock issues, fixed 'em
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* more code cleanup
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*
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* Revision 1.8 1996/05/27 18:56:37 jimz
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* more code cleanup
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* better typing
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* compiles in all 3 environments
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*
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* Revision 1.7 1996/05/24 01:59:45 jimz
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* another checkpoint in code cleanup for release
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* time to sync kernel tree
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*
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* Revision 1.6 1996/05/18 19:51:34 jimz
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* major code cleanup- fix syntax, make some types consistent,
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* add prototypes, clean out dead code, et cetera
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*
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* Revision 1.5 1995/12/06 15:07:03 root
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* added copyright info
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*
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* Revision 1.4 1995/11/17 18:58:46 wvcii
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* added prototyping to MapParity
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*
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* Revision 1.3 1995/06/23 13:38:46 robby
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* updeated to prototypes in rf_layout.h
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*
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*/
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#ifndef _RF__RF_RAID4_H_
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#define _RF__RF_RAID4_H_
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int rf_ConfigureRAID4(RF_ShutdownList_t **listp, RF_Raid_t *raidPtr,
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RF_Config_t *cfgPtr);
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int rf_GetDefaultNumFloatingReconBuffersRAID4(RF_Raid_t *raidPtr);
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RF_HeadSepLimit_t rf_GetDefaultHeadSepLimitRAID4(RF_Raid_t *raidPtr);
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void rf_MapSectorRAID4(RF_Raid_t *raidPtr, RF_RaidAddr_t raidSector,
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RF_RowCol_t *row, RF_RowCol_t *col, RF_SectorNum_t *diskSector, int remap);
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void rf_MapParityRAID4(RF_Raid_t *raidPtr, RF_RaidAddr_t raidSector,
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RF_RowCol_t *row, RF_RowCol_t *col, RF_SectorNum_t *diskSector, int remap);
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void rf_IdentifyStripeRAID4(RF_Raid_t *raidPtr, RF_RaidAddr_t addr,
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RF_RowCol_t **diskids, RF_RowCol_t *outRow);
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void rf_MapSIDToPSIDRAID4(RF_RaidLayout_t *layoutPtr,
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RF_StripeNum_t stripeID, RF_StripeNum_t *psID,
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RF_ReconUnitNum_t *which_ru);
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void rf_RAID4DagSelect(RF_Raid_t *raidPtr, RF_IoType_t type,
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RF_AccessStripeMap_t *asmap, RF_VoidFuncPtr *createFunc);
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#endif /* !_RF__RF_RAID4_H_ */
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