mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-17 10:26:15 +00:00
258 lines
7.5 KiB
C
258 lines
7.5 KiB
C
/*-
|
|
* 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: */
|