drivers/block/drbd/drbd_strings.c

   1 /*
   2   drbd.h
   3
   4   This file is part of DRBD by Philipp Reisner and Lars Ellenberg.
   5
   6   Copyright (C) 2003-2008, LINBIT Information Technologies GmbH.
   7   Copyright (C) 2003-2008, Philipp Reisner <philipp.reisner@linbit.com>.
   8   Copyright (C) 2003-2008, Lars Ellenberg <lars.ellenberg@linbit.com>.
   9
  10   drbd is free software; you can redistribute it and/or modify
  11   it under the terms of the GNU General Public License as published by
  12   the Free Software Foundation; either version 2, or (at your option)
  13   any later version.
  14
  15   drbd is distributed in the hope that it will be useful,
  16   but WITHOUT ANY WARRANTY; without even the implied warranty of
  17   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18   GNU General Public License for more details.
  19
  20   You should have received a copy of the GNU General Public License
  21   along with drbd; see the file COPYING.  If not, write to
  22   the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
  23
  24 */
  25
  26 #include <linux/drbd.h>
  27
  28 static const char *drbd_conn_s_names[] = {
  29         [C_STANDALONE]       = "StandAlone",
  30         [C_DISCONNECTING]    = "Disconnecting",
  31         [C_UNCONNECTED]      = "Unconnected",
  32         [C_TIMEOUT]          = "Timeout",
  33         [C_BROKEN_PIPE]      = "BrokenPipe",
  34         [C_NETWORK_FAILURE]  = "NetworkFailure",
  35         [C_PROTOCOL_ERROR]   = "ProtocolError",
  36         [C_WF_CONNECTION]    = "WFConnection",
  37         [C_WF_REPORT_PARAMS] = "WFReportParams",
  38         [C_TEAR_DOWN]        = "TearDown",
  39         [C_CONNECTED]        = "Connected",
  40         [C_STARTING_SYNC_S]  = "StartingSyncS",
  41         [C_STARTING_SYNC_T]  = "StartingSyncT",
  42         [C_WF_BITMAP_S]      = "WFBitMapS",
  43         [C_WF_BITMAP_T]      = "WFBitMapT",
  44         [C_WF_SYNC_UUID]     = "WFSyncUUID",
  45         [C_SYNC_SOURCE]      = "SyncSource",
  46         [C_SYNC_TARGET]      = "SyncTarget",
  47         [C_PAUSED_SYNC_S]    = "PausedSyncS",
  48         [C_PAUSED_SYNC_T]    = "PausedSyncT",
  49         [C_VERIFY_S]         = "VerifyS",
  50         [C_VERIFY_T]         = "VerifyT",
  51         [C_AHEAD]            = "Ahead",
  52         [C_BEHIND]           = "Behind",
  53 };
  54
  55 static const char *drbd_role_s_names[] = {
  56         [R_PRIMARY]   = "Primary",
  57         [R_SECONDARY] = "Secondary",
  58         [R_UNKNOWN]   = "Unknown"
  59 };
  60
  61 static const char *drbd_disk_s_names[] = {
  62         [D_DISKLESS]     = "Diskless",
  63         [D_ATTACHING]    = "Attaching",
  64         [D_FAILED]       = "Failed",
  65         [D_NEGOTIATING]  = "Negotiating",
  66         [D_INCONSISTENT] = "Inconsistent",
  67         [D_OUTDATED]     = "Outdated",
  68         [D_UNKNOWN]      = "DUnknown",
  69         [D_CONSISTENT]   = "Consistent",
  70         [D_UP_TO_DATE]   = "UpToDate",
  71 };
  72
  73 static const char *drbd_state_sw_errors[] = {
  74         [-SS_TWO_PRIMARIES] = "Multiple primaries not allowed by config",
  75         [-SS_NO_UP_TO_DATE_DISK] = "Need access to UpToDate data",
  76         [-SS_NO_LOCAL_DISK] = "Can not resync without local disk",
  77         [-SS_NO_REMOTE_DISK] = "Can not resync without remote disk",
  78         [-SS_CONNECTED_OUTDATES] = "Refusing to be Outdated while Connected",
  79         [-SS_PRIMARY_NOP] = "Refusing to be Primary while peer is not outdated",
  80         [-SS_RESYNC_RUNNING] = "Can not start OV/resync since it is already active",
  81         [-SS_ALREADY_STANDALONE] = "Can not disconnect a StandAlone device",
  82         [-SS_CW_FAILED_BY_PEER] = "State change was refused by peer node",
  83         [-SS_IS_DISKLESS] = "Device is diskless, the requested operation requires a disk",
  84         [-SS_DEVICE_IN_USE] = "Device is held open by someone",
  85         [-SS_NO_NET_CONFIG] = "Have no net/connection configuration",
  86         [-SS_NO_VERIFY_ALG] = "Need a verify algorithm to start online verify",
  87         [-SS_NEED_CONNECTION] = "Need a connection to start verify or resync",
  88         [-SS_NOT_SUPPORTED] = "Peer does not support protocol",
  89         [-SS_LOWER_THAN_OUTDATED] = "Disk state is lower than outdated",
  90         [-SS_IN_TRANSIENT_STATE] = "In transient state, retry after next state change",
  91         [-SS_CONCURRENT_ST_CHG] = "Concurrent state changes detected and aborted",
  92         [-SS_OUTDATE_WO_CONN] = "Need a connection for a graceful disconnect/outdate peer",
  93         [-SS_O_VOL_PEER_PRI] = "Other vol primary on peer not allowed by config",
  94 };
  95
  96 const char *drbd_conn_str(enum drbd_conns s)
  97 {
  98         /* enums are unsigned... */
  99         return s > C_BEHIND ? "TOO_LARGE" : drbd_conn_s_names[s];
 100 }
 101
 102 const char *drbd_role_str(enum drbd_role s)
 103 {
 104         return s > R_SECONDARY   ? "TOO_LARGE" : drbd_role_s_names[s];
 105 }
 106
 107 const char *drbd_disk_str(enum drbd_disk_state s)
 108 {
 109         return s > D_UP_TO_DATE    ? "TOO_LARGE" : drbd_disk_s_names[s];
 110 }
 111
 112 const char *drbd_set_st_err_str(enum drbd_state_rv err)
 113 {
 114         return err <= SS_AFTER_LAST_ERROR ? "TOO_SMALL" :
 115                err > SS_TWO_PRIMARIES ? "TOO_LARGE"
 116                         : drbd_state_sw_errors[-err];
 117 }