Annotation of sys/dev/raidframe/rf_disks.h, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: rf_disks.h,v 1.5 2002/12/16 07:01:03 tdeval Exp $ */
2: /* $NetBSD: rf_disks.h,v 1.8 2000/03/27 03:25:17 oster Exp $ */
3:
4: /*
5: * Copyright (c) 1995 Carnegie-Mellon University.
6: * All rights reserved.
7: *
8: * Author: Mark Holland
9: *
10: * Permission to use, copy, modify and distribute this software and
11: * its documentation is hereby granted, provided that both the copyright
12: * notice and this permission notice appear in all copies of the
13: * software, derivative works or modified versions, and any portions
14: * thereof, and that both notices appear in supporting documentation.
15: *
16: * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
17: * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
18: * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
19: *
20: * Carnegie Mellon requests users of this software to return to
21: *
22: * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
23: * School of Computer Science
24: * Carnegie Mellon University
25: * Pittsburgh PA 15213-3890
26: *
27: * any improvements or extensions that they make and grant Carnegie the
28: * rights to redistribute these changes.
29: */
30:
31: /*
32: * rf_disks.h -- Header file for code related to physical disks.
33: */
34:
35: #ifndef _RF__RF_DISKS_H_
36: #define _RF__RF_DISKS_H_
37:
38: #include <sys/types.h>
39:
40: #include "rf_archs.h"
41: #include "rf_types.h"
42:
43: #if defined(__NetBSD__)
44: #include "rf_netbsd.h"
45: #elif defined(__OpenBSD__)
46: #include "rf_openbsd.h"
47: #endif
48:
49: /*
50: * A physical disk can be in one of several states:
51: * IF YOU ADD A STATE, CHECK TO SEE IF YOU NEED TO MODIFY RF_DEAD_DISK() BELOW.
52: */
53: enum RF_DiskStatus_e {
54: rf_ds_optimal, /* No problems. */
55: rf_ds_failed, /* Reconstruction ongoing. */
56: rf_ds_reconstructing, /*
57: * Reconstruction complete to spare, dead disk
58: * not yet replaced.
59: */
60: rf_ds_dist_spared, /*
61: * Reconstruction complete to distributed
62: * spare space, dead disk not yet replaced.
63: */
64: rf_ds_spared, /*
65: * Reconstruction complete to distributed
66: * spare space, dead disk not yet replaced.
67: */
68: rf_ds_spare, /* An available spare disk. */
69: rf_ds_used_spare /*
70: * A spare which has been used, and hence is
71: * not available.
72: */
73: };
74: typedef enum RF_DiskStatus_e RF_DiskStatus_t;
75:
76: struct RF_RaidDisk_s {
77: char devname[56]; /* Name of device file. */
78: RF_DiskStatus_t status; /* Whether it is up or down. */
79: RF_RowCol_t spareRow; /*
80: * If in status "spared", this
81: * identifies the spare disk.
82: */
83: RF_RowCol_t spareCol; /*
84: * If in status "spared", this
85: * identifies the spare disk.
86: */
87: RF_SectorCount_t numBlocks; /*
88: * Number of blocks, obtained via
89: * READ CAPACITY.
90: */
91: int blockSize;
92: RF_SectorCount_t partitionSize; /*
93: * The *actual* and *full* size of
94: * the partition, from the disklabel.
95: */
96: int auto_configured; /*
97: * 1 if this component was
98: * autoconfigured. 0 otherwise.
99: */
100: dev_t dev;
101: };
102:
103: /*
104: * An RF_DiskOp_t ptr is really a pointer to a UAGT_CCB, but I want
105: * to isolate the CAM layer from all other layers, so I typecast to/from
106: * RF_DiskOp_t * (i.e. void *) at the interfaces.
107: */
108: typedef void RF_DiskOp_t;
109:
110: /* If a disk is in any of these states, it is inaccessible. */
111: #define RF_DEAD_DISK(_dstat_) \
112: (((_dstat_) == rf_ds_spared) || \
113: ((_dstat_) == rf_ds_reconstructing) || \
114: ((_dstat_) == rf_ds_failed) || \
115: ((_dstat_) == rf_ds_dist_spared))
116:
117: #ifdef _KERNEL
118: #if defined(__NetBSD__)
119: #include "rf_netbsd.h"
120: #elif defined(__OpenBSD__)
121: #include "rf_openbsd.h"
122: #endif
123:
124: int rf_ConfigureDisks(RF_ShutdownList_t **, RF_Raid_t *, RF_Config_t *);
125: int rf_ConfigureSpareDisks(RF_ShutdownList_t **, RF_Raid_t *, RF_Config_t *);
126: int rf_ConfigureDisk(RF_Raid_t *, char *, RF_RaidDisk_t *,
127: RF_RowCol_t, RF_RowCol_t);
128: int rf_AutoConfigureDisks(RF_Raid_t *, RF_Config_t *, RF_AutoConfig_t *);
129: int rf_CheckLabels(RF_Raid_t *, RF_Config_t *);
130: int rf_add_hot_spare(RF_Raid_t *, RF_SingleComponent_t *);
131: int rf_remove_hot_spare(RF_Raid_t *, RF_SingleComponent_t *);
132: int rf_delete_component(RF_Raid_t *, RF_SingleComponent_t *);
133: int rf_incorporate_hot_spare(RF_Raid_t *, RF_SingleComponent_t *);
134: #endif /* _KERNEL */
135:
136: #endif /* !_RF__RF_DISKS_H_ */
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