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- /*
- * devRaidDisk.h --
- *
- * Declarations of ...
- *
- * Copyright 1989 Regents of the University of California
- * Permission to use, copy, modify, and distribute this
- * software and its documentation for any purpose and without
- * fee is hereby granted, provided that the above copyright
- * notice appear in all copies. The University of California
- * makes no representations about the suitability of this
- * software for any purpose. It is provided "as is" without
- * express or implied warranty.
- *
- * $Header: /cdrom/src/kernel/Cvsroot/kernel/raid/devRaidDisk.h,v 1.6 90/11/09 13:15:54 eklee Exp $ SPRITE (Berkeley)
- */
-
- #ifndef _DEVRAIDDISK
- #define _DEVRAIDDISK
-
- #include "devRaid.h"
- #include "semaphore.h"
-
- /*
- * Data structure for each disk used by raid device.
- *
- * RAID_DISK_INVALID ==> could not attach device
- * RAID_DISK_READY ==> device operational
- * RAID_DISK_FAILED ==> device considered failed (a write error occured)
- * RAID_DISK_REPLACED ==> the device is nolonger a part of the array
- * RAID_DISK_RECONSTRUCT==> the device is currently being reonstructed
- * (IO's to the reconstructed part of the device
- * are allowed)
- */
- typedef enum {
- RAID_DISK_INVALID, RAID_DISK_READY, RAID_DISK_FAILED, RAID_DISK_REPLACED,
- } RaidDiskState;
-
- typedef struct RaidDisk {
- Sema lock;
- RaidDiskState state;
- unsigned numValidSector; /* Used during reconstruction. */
- int row;
- int col;
- int version;
- Fs_Device device;
- DevBlockDeviceHandle *handlePtr;
- } RaidDisk;
-
- /*
- * Is specified range of disk sectors "valid" on specified disk?
- */
- #define IsValid(diskPtr, startSector, numSector) \
- ((startSector) + (numSector) <= (diskPtr)->numValidSector)
-
- #endif _DEVRAIDDISK
-