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/*-
* Copyright (c) 1997, 1998
* Nan Yang Computer Services Limited. All rights reserved.
*
* This software is distributed under the so-called ``Berkeley
* License'':
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Nan Yang Computer
* Services Limited.
* 4. Neither the name of the Company nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* This software is provided ``as is'', and any express or implied
* warranties, including, but not limited to, the implied warranties of
* merchantability and fitness for a particular purpose are disclaimed.
* In no event shall the company or contributors be liable for any
* direct, indirect, incidental, special, exemplary, or consequential
* damages (including, but not limited to, procurement of substitute
* goods or services; loss of use, data, or profits; or business
* interruption) however caused and on any theory of liability, whether
* in contract, strict liability, or tort (including negligence or
* otherwise) arising in any way out of the use of this software, even if
* advised of the possibility of such damage.
*
* $FreeBSD$
*/
/*
* This file gets read by makestatetext to create text files
* with the names of the states, so don't change the file
* format
*/
enum volumestate {
volume_unallocated,
/* present but unused. Must be 0 */
volume_uninit,
/* mentioned elsewhere but not known to the configuration */
volume_down,
/* The volume is up and functional, but not all plexes may be available */
volume_up,
volume_laststate = volume_up /* last value, for table dimensions */
};
enum plexstate {
/* An empty entry, not a plex at all. */
plex_unallocated,
/* The plex has been referenced by a volume */
plex_referenced,
/*
* The plex has been allocated, but there configuration
* is not complete
*/
plex_init,
/*
* A plex which has gone completely down because of
* I/O errors.
*/
plex_faulty,
/*
* A plex which has been taken down by the
* administrator.
*/
plex_down,
/* A plex which is being initialized */
plex_initializing,
/*
* *** The remaining states represent plexes which are
* at least partially up. Keep these separate so that
* they can be checked more easily.
*/
/*
* A plex entry which is at least partially up. Not
* all subdisks are available, and an inconsistency
* has occurred. If no other plex is uncorrupted,
* the volume is no longer consistent.
*/
plex_corrupt,
plex_firstup = plex_corrupt, /* first "up" state */
/*
* A RAID-5 plex entry which is accessible, but one
* subdisk is down, requiring recovery for many
* I/O requests.
*/
plex_degraded,
/*
* A plex which is really up, but which has a reborn
* subdisk which we don't completely trust, and
* which we don't want to read if we can avoid it
*/
plex_flaky,
/*
* A plex entry which is completely up. All subdisks
* are up.
*/
plex_up,
plex_laststate = plex_up /* last value, for table dimensions */
};
/* subdisk states */
enum sdstate {
/* An empty entry, not a subdisk at all. */
sd_unallocated,
/*
* A subdisk entry which has not been created
* completely. Some fields may be empty.
*/
sd_uninit,
/* The subdisk has been referenced by a plex */
sd_referenced,
/*
* A subdisk entry which has been created completely.
* All fields are correct, but the disk hasn't
* been updated.
*/
sd_init,
/*
* A subdisk entry which has been created completely.
* All fields are correct, and the disk has been
* updated, but there is no data on the disk.
*/
sd_empty,
/*
* A subdisk entry which has been created completely and
* which is currently being initialized
*/
sd_initializing,
/*
* A subdisk entry which has been initialized,
* but which can't come up because it would
* cause inconsistencies.
*/
sd_initialized,
/* *** The following states represent invalid data */
/*
* A subdisk entry which has been created completely.
* All fields are correct, the config on disk has been
* updated, and the data was valid, but since then the
* drive has been taken down, and as a result updates
* have been missed.
*/
sd_obsolete,
/*
* A subdisk entry which has been created completely.
* All fields are correct, the disk has been updated,
* and the data was valid, but since then the drive
* has been crashed and updates have been lost.
*/
sd_stale,
/* *** The following states represent valid, inaccessible data */
/*
* A subdisk entry which has been created completely.
* All fields are correct, the disk has been updated,
* and the data was valid, but since then the drive
* has gone down. No attempt has been made to write
* to the subdisk since the crash, so the data is valid.
*/
sd_crashed,
/*
* A subdisk entry which was up, which contained
* valid data, and which was taken down by the
* administrator. The data is valid.
*/
sd_down,
/*
* *** This is invalid data (the subdisk previously had
* a numerically lower state), but it is currently in the
* process of being revived. We can write but not read.
*/
sd_reviving,
/*
* *** The following states represent accessible subdisks
* with valid data
*/
/*
* A subdisk entry which has been created completely.
* All fields are correct, the disk has been updated,
* and the data was valid, but since then the drive
* has gone down and up again. No updates were lost,
* but it is possible that the subdisk has been
* damaged. We won't read from this subdisk if we
* have a choice. If this is the only subdisk which
* covers this address space in the plex, we set its
* state to sd_up under these circumstances, so this
* status implies that there is another subdisk to
* fulfil the request.
*/
sd_reborn,
/*
* A subdisk entry which has been created completely.
* All fields are correct, the disk has been updated,
* and the data is valid.
*/
sd_up,
sd_laststate = sd_up /* last value, for table dimensions */
};
enum drivestate {
drive_unallocated,
/* present but unused. Must be 0 */
drive_referenced,
/* just mentioned in some other config entry */
drive_down,
/* not accessible */
drive_up,
/* up and running */
drive_laststate = drive_up /* last value, for table dimensions */
};
/* Local Variables: */
/* fill-column: 50 */
/* End: */
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