/* $NetBSD: rf_reconmap.h,v 1.12 2011/05/10 07:04:17 mrg Exp $ */
/*
* Copyright (c) 1995 Carnegie-Mellon University.
* All rights reserved.
*
* Author: Mark Holland
*
* Permission to use, copy, modify and distribute this software and
* its documentation is hereby granted, provided that both the copyright
* notice and this permission notice appear in all copies of the
* software, derivative works or modified versions, and any portions
* thereof, and that both notices appear in supporting documentation.
*
* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
* FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
*
* Carnegie Mellon requests users of this software to return to
*
* Software Distribution Coordinator or
[email protected]
* School of Computer Science
* Carnegie Mellon University
* Pittsburgh PA 15213-3890
*
* any improvements or extensions that they make and grant Carnegie the
* rights to redistribute these changes.
*/
/******************************************************************************
* rf_reconMap.h -- Header file describing reconstruction status data structure
******************************************************************************/
#ifndef _RF__RF_RECONMAP_H_
#define _RF__RF_RECONMAP_H_
#include <dev/raidframe/raidframevar.h>
#include <sys/pool.h>
#include "rf_threadstuff.h"
/* the number of recon units in the status table. */
#define RF_RECONMAP_SIZE 32
/*
* Main reconstruction status descriptor.
*/
struct RF_ReconMap_s {
RF_SectorCount_t sectorsPerReconUnit; /* sectors per reconstruct
* unit */
RF_SectorCount_t sectorsInDisk; /* total sectors in disk */
RF_SectorCount_t unitsLeft; /* recon units left to recon */
RF_ReconUnitCount_t totalRUs; /* total recon units on disk */
RF_ReconUnitCount_t spareRUs; /* total number of spare RUs on failed
* disk */
RF_ReconUnitCount_t low_ru; /* lowest reconstruction unit number in
the status array */
RF_ReconUnitCount_t high_ru; /* highest reconstruction unit number
in the status array */
RF_ReconUnitCount_t head; /* the position in the array where
low_ru is found */
RF_ReconUnitCount_t status_size; /* number of recon units in status */
RF_StripeCount_t totalParityStripes; /* total number of parity
* stripes in array */
RF_ReconMapListElem_t **status; /* array of ptrs to list elements */
struct pool elem_pool; /* pool of RF_ReconMapListElem_t's */
rf_declare_mutex2(mutex);
rf_declare_cond2(cv);
int lock; /* 1 if someone has the recon map
locked, 0 otherwise */
};
/* a list element */
struct RF_ReconMapListElem_s {
RF_SectorNum_t startSector; /* bounding sect nums on this block */
RF_SectorNum_t stopSector;
RF_ReconMapListElem_t *next; /* next element in list */
};
RF_ReconMap_t *rf_MakeReconMap(RF_Raid_t *, RF_SectorCount_t,
RF_SectorCount_t, RF_ReconUnitCount_t);
void rf_ReconMapUpdate(RF_Raid_t *, RF_ReconMap_t *, RF_SectorNum_t, RF_SectorNum_t);
void rf_FreeReconMap(RF_ReconMap_t *);
int rf_CheckRUReconstructed(RF_ReconMap_t *, RF_SectorNum_t);
RF_ReconUnitCount_t rf_UnitsLeftToReconstruct(RF_ReconMap_t *);
void rf_PrintReconMap(RF_Raid_t *, RF_ReconMap_t *, RF_RowCol_t);
void rf_PrintReconSchedule(RF_ReconMap_t *, struct timeval *);
#endif /* !_RF__RF_RECONMAP_H_ */
