108 lines
3.9 KiB
C
108 lines
3.9 KiB
C
/* $NetBSD: rf_disks.h,v 1.8 2000/03/27 03:25:17 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: 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_disks.h -- header file for code related to physical disks
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*/
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#ifndef _RF__RF_DISKS_H_
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#define _RF__RF_DISKS_H_
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#include <sys/types.h>
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#include "rf_archs.h"
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#include "rf_types.h"
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#include "rf_netbsd.h"
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/*
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* A physical disk can be in one of several states:
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* IF YOU ADD A STATE, CHECK TO SEE IF YOU NEED TO MODIFY RF_DEAD_DISK() BELOW.
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*/
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enum RF_DiskStatus_e {
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rf_ds_optimal, /* no problems */
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rf_ds_failed, /* reconstruction ongoing */
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rf_ds_reconstructing, /* reconstruction complete to spare, dead disk
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* not yet replaced */
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rf_ds_dist_spared, /* reconstruction complete to distributed
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* spare space, dead disk not yet replaced */
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rf_ds_spared, /* reconstruction complete to distributed
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* spare space, dead disk not yet replaced */
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rf_ds_spare, /* an available spare disk */
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rf_ds_used_spare /* a spare which has been used, and hence is
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* not available */
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};
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typedef enum RF_DiskStatus_e RF_DiskStatus_t;
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struct RF_RaidDisk_s {
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char devname[56]; /* name of device file */
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RF_DiskStatus_t status; /* whether it is up or down */
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RF_RowCol_t spareRow; /* if in status "spared", this identifies the
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* spare disk */
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RF_RowCol_t spareCol; /* if in status "spared", this identifies the
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* spare disk */
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RF_SectorCount_t numBlocks; /* number of blocks, obtained via READ
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* CAPACITY */
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int blockSize;
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RF_SectorCount_t partitionSize; /* The *actual* and *full* size of
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the partition, from the disklabel */
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int auto_configured;/* 1 if this component was autoconfigured.
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0 otherwise. */
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dev_t dev;
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};
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/*
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* An RF_DiskOp_t ptr is really a pointer to a UAGT_CCB, but I want
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* to isolate the cam layer from all other layers, so I typecast to/from
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* RF_DiskOp_t * (i.e. void *) at the interfaces.
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*/
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typedef void RF_DiskOp_t;
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/* if a disk is in any of these states, it is inaccessible */
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#define RF_DEAD_DISK(_dstat_) (((_dstat_) == rf_ds_spared) || \
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((_dstat_) == rf_ds_reconstructing) || ((_dstat_) == rf_ds_failed) || \
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((_dstat_) == rf_ds_dist_spared))
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#ifdef _KERNEL
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#include "rf_netbsd.h"
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int rf_ConfigureDisks(RF_ShutdownList_t ** listp, RF_Raid_t * raidPtr,
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RF_Config_t * cfgPtr);
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int rf_ConfigureSpareDisks(RF_ShutdownList_t ** listp, RF_Raid_t * raidPtr,
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RF_Config_t * cfgPtr);
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int rf_ConfigureDisk(RF_Raid_t * raidPtr, char *buf, RF_RaidDisk_t * diskPtr,
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RF_RowCol_t row, RF_RowCol_t col);
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int rf_AutoConfigureDisks(RF_Raid_t *raidPtr, RF_Config_t *cfgPtr,
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RF_AutoConfig_t *auto_config);
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int rf_CheckLabels( RF_Raid_t *, RF_Config_t *);
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int rf_add_hot_spare(RF_Raid_t *raidPtr, RF_SingleComponent_t *sparePtr);
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int rf_remove_hot_spare(RF_Raid_t *raidPtr, RF_SingleComponent_t *sparePtr);
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int rf_delete_component(RF_Raid_t *raidPtr, RF_SingleComponent_t *component);
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int rf_incorporate_hot_spare(RF_Raid_t *raidPtr,
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RF_SingleComponent_t *component);
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#endif /* _KERNEL */
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#endif /* !_RF__RF_DISKS_H_ */
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