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Diffstat (limited to 'sys/dev/vinum/vinumstate.h')
| -rw-r--r-- | sys/dev/vinum/vinumstate.h | 213 |
1 files changed, 213 insertions, 0 deletions
diff --git a/sys/dev/vinum/vinumstate.h b/sys/dev/vinum/vinumstate.h new file mode 100644 index 0000000..78bec4e --- /dev/null +++ b/sys/dev/vinum/vinumstate.h @@ -0,0 +1,213 @@ +/*- + * 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. + * + * $Id: vinumstate.h,v 1.1.1.1 1998/09/16 05:56:21 grog Exp $ + */ + +/* 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 defined */ + + 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 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 currently being brought up after + * being not up. This involves copying data from + * another plex */ + plex_reviving, + + /* 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 plex entry which is at least partially up. Not + * all subdisks are available, but so far no + * inconsistency has occurred (this will change with + * the first write to the address space occupied by + * a defective subdisk). A RAID 5 plex with one subdisk + * down will remain degraded even after a write */ + 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, + + /* 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 and + * which is currently being initialized */ + sd_initializing, + + /* 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, + + /* *** The following states represent invalid 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 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 gone down, updates have been lost, and then + * the drive came up again. + */ + 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. + */ + 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, + + /* *** 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_uninit, + /* just mentioned in some other config entry */ + + drive_down, + /* not accessible */ + + drive_coming_up, + /* in the process of being brought up */ + + drive_up, + /* up and running */ + + drive_laststate = drive_up /* last value, for table dimensions */ +}; |
