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 #include "drbd_strings.h"
28 
29 static const char *drbd_conn_s_names[] = {
30 	[C_STANDALONE]       = "StandAlone",
31 	[C_DISCONNECTING]    = "Disconnecting",
32 	[C_UNCONNECTED]      = "Unconnected",
33 	[C_TIMEOUT]          = "Timeout",
34 	[C_BROKEN_PIPE]      = "BrokenPipe",
35 	[C_NETWORK_FAILURE]  = "NetworkFailure",
36 	[C_PROTOCOL_ERROR]   = "ProtocolError",
37 	[C_WF_CONNECTION]    = "WFConnection",
38 	[C_WF_REPORT_PARAMS] = "WFReportParams",
39 	[C_TEAR_DOWN]        = "TearDown",
40 	[C_CONNECTED]        = "Connected",
41 	[C_STARTING_SYNC_S]  = "StartingSyncS",
42 	[C_STARTING_SYNC_T]  = "StartingSyncT",
43 	[C_WF_BITMAP_S]      = "WFBitMapS",
44 	[C_WF_BITMAP_T]      = "WFBitMapT",
45 	[C_WF_SYNC_UUID]     = "WFSyncUUID",
46 	[C_SYNC_SOURCE]      = "SyncSource",
47 	[C_SYNC_TARGET]      = "SyncTarget",
48 	[C_PAUSED_SYNC_S]    = "PausedSyncS",
49 	[C_PAUSED_SYNC_T]    = "PausedSyncT",
50 	[C_VERIFY_S]         = "VerifyS",
51 	[C_VERIFY_T]         = "VerifyT",
52 	[C_AHEAD]            = "Ahead",
53 	[C_BEHIND]           = "Behind",
54 };
55 
56 static const char *drbd_role_s_names[] = {
57 	[R_PRIMARY]   = "Primary",
58 	[R_SECONDARY] = "Secondary",
59 	[R_UNKNOWN]   = "Unknown"
60 };
61 
62 static const char *drbd_disk_s_names[] = {
63 	[D_DISKLESS]     = "Diskless",
64 	[D_ATTACHING]    = "Attaching",
65 	[D_FAILED]       = "Failed",
66 	[D_NEGOTIATING]  = "Negotiating",
67 	[D_INCONSISTENT] = "Inconsistent",
68 	[D_OUTDATED]     = "Outdated",
69 	[D_UNKNOWN]      = "DUnknown",
70 	[D_CONSISTENT]   = "Consistent",
71 	[D_UP_TO_DATE]   = "UpToDate",
72 };
73 
74 static const char *drbd_state_sw_errors[] = {
75 	[-SS_TWO_PRIMARIES] = "Multiple primaries not allowed by config",
76 	[-SS_NO_UP_TO_DATE_DISK] = "Need access to UpToDate data",
77 	[-SS_NO_LOCAL_DISK] = "Can not resync without local disk",
78 	[-SS_NO_REMOTE_DISK] = "Can not resync without remote disk",
79 	[-SS_CONNECTED_OUTDATES] = "Refusing to be Outdated while Connected",
80 	[-SS_PRIMARY_NOP] = "Refusing to be Primary while peer is not outdated",
81 	[-SS_RESYNC_RUNNING] = "Can not start OV/resync since it is already active",
82 	[-SS_ALREADY_STANDALONE] = "Can not disconnect a StandAlone device",
83 	[-SS_CW_FAILED_BY_PEER] = "State change was refused by peer node",
84 	[-SS_IS_DISKLESS] = "Device is diskless, the requested operation requires a disk",
85 	[-SS_DEVICE_IN_USE] = "Device is held open by someone",
86 	[-SS_NO_NET_CONFIG] = "Have no net/connection configuration",
87 	[-SS_NO_VERIFY_ALG] = "Need a verify algorithm to start online verify",
88 	[-SS_NEED_CONNECTION] = "Need a connection to start verify or resync",
89 	[-SS_NOT_SUPPORTED] = "Peer does not support protocol",
90 	[-SS_LOWER_THAN_OUTDATED] = "Disk state is lower than outdated",
91 	[-SS_IN_TRANSIENT_STATE] = "In transient state, retry after next state change",
92 	[-SS_CONCURRENT_ST_CHG] = "Concurrent state changes detected and aborted",
93 	[-SS_OUTDATE_WO_CONN] = "Need a connection for a graceful disconnect/outdate peer",
94 	[-SS_O_VOL_PEER_PRI] = "Other vol primary on peer not allowed by config",
95 };
96 
97 const char *drbd_conn_str(enum drbd_conns s)
98 {
99 	/* enums are unsigned... */
100 	return s > C_BEHIND ? "TOO_LARGE" : drbd_conn_s_names[s];
101 }
102 
103 const char *drbd_role_str(enum drbd_role s)
104 {
105 	return s > R_SECONDARY   ? "TOO_LARGE" : drbd_role_s_names[s];
106 }
107 
108 const char *drbd_disk_str(enum drbd_disk_state s)
109 {
110 	return s > D_UP_TO_DATE    ? "TOO_LARGE" : drbd_disk_s_names[s];
111 }
112 
113 const char *drbd_set_st_err_str(enum drbd_state_rv err)
114 {
115 	return err <= SS_AFTER_LAST_ERROR ? "TOO_SMALL" :
116 	       err > SS_TWO_PRIMARIES ? "TOO_LARGE"
117 			: drbd_state_sw_errors[-err];
118 }
119