88 lines
3.4 KiB
C
88 lines
3.4 KiB
C
/* $NetBSD: rf_reconmap.h,v 1.12 2011/05/10 07:04:17 mrg 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: Mark Holland
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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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/******************************************************************************
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* rf_reconMap.h -- Header file describing reconstruction status data structure
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******************************************************************************/
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#ifndef _RF__RF_RECONMAP_H_
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#define _RF__RF_RECONMAP_H_
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#include <dev/raidframe/raidframevar.h>
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#include <sys/pool.h>
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#include "rf_threadstuff.h"
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/* the number of recon units in the status table. */
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#define RF_RECONMAP_SIZE 32
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/*
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* Main reconstruction status descriptor.
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*/
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struct RF_ReconMap_s {
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RF_SectorCount_t sectorsPerReconUnit; /* sectors per reconstruct
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* unit */
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RF_SectorCount_t sectorsInDisk; /* total sectors in disk */
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RF_SectorCount_t unitsLeft; /* recon units left to recon */
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RF_ReconUnitCount_t totalRUs; /* total recon units on disk */
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RF_ReconUnitCount_t spareRUs; /* total number of spare RUs on failed
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* disk */
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RF_ReconUnitCount_t low_ru; /* lowest reconstruction unit number in
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the status array */
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RF_ReconUnitCount_t high_ru; /* highest reconstruction unit number
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in the status array */
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RF_ReconUnitCount_t head; /* the position in the array where
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low_ru is found */
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RF_ReconUnitCount_t status_size; /* number of recon units in status */
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RF_StripeCount_t totalParityStripes; /* total number of parity
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* stripes in array */
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RF_ReconMapListElem_t **status; /* array of ptrs to list elements */
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struct pool elem_pool; /* pool of RF_ReconMapListElem_t's */
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rf_declare_mutex2(mutex);
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rf_declare_cond2(cv);
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int lock; /* 1 if someone has the recon map
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locked, 0 otherwise */
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};
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/* a list element */
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struct RF_ReconMapListElem_s {
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RF_SectorNum_t startSector; /* bounding sect nums on this block */
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RF_SectorNum_t stopSector;
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RF_ReconMapListElem_t *next; /* next element in list */
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};
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RF_ReconMap_t *rf_MakeReconMap(RF_Raid_t *, RF_SectorCount_t,
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RF_SectorCount_t, RF_ReconUnitCount_t);
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void rf_ReconMapUpdate(RF_Raid_t *, RF_ReconMap_t *, RF_SectorNum_t, RF_SectorNum_t);
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void rf_FreeReconMap(RF_ReconMap_t *);
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int rf_CheckRUReconstructed(RF_ReconMap_t *, RF_SectorNum_t);
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RF_ReconUnitCount_t rf_UnitsLeftToReconstruct(RF_ReconMap_t *);
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void rf_PrintReconMap(RF_Raid_t *, RF_ReconMap_t *, RF_RowCol_t);
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void rf_PrintReconSchedule(RF_ReconMap_t *, struct timeval *);
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#endif /* !_RF__RF_RECONMAP_H_ */
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