1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3   drbd.h
4 
5   This file is part of DRBD by Philipp Reisner and Lars Ellenberg.
6 
7   Copyright (C) 2003-2008, LINBIT Information Technologies GmbH.
8   Copyright (C) 2003-2008, Philipp Reisner <philipp.reisner@linbit.com>.
9   Copyright (C) 2003-2008, Lars Ellenberg <lars.ellenberg@linbit.com>.
10 
11 
12 */
13 
14 #include <linux/drbd.h>
15 #include "drbd_strings.h"
16 
17 static const char * const drbd_conn_s_names[] = {
18 	[C_STANDALONE]       = "StandAlone",
19 	[C_DISCONNECTING]    = "Disconnecting",
20 	[C_UNCONNECTED]      = "Unconnected",
21 	[C_TIMEOUT]          = "Timeout",
22 	[C_BROKEN_PIPE]      = "BrokenPipe",
23 	[C_NETWORK_FAILURE]  = "NetworkFailure",
24 	[C_PROTOCOL_ERROR]   = "ProtocolError",
25 	[C_WF_CONNECTION]    = "WFConnection",
26 	[C_WF_REPORT_PARAMS] = "WFReportParams",
27 	[C_TEAR_DOWN]        = "TearDown",
28 	[C_CONNECTED]        = "Connected",
29 	[C_STARTING_SYNC_S]  = "StartingSyncS",
30 	[C_STARTING_SYNC_T]  = "StartingSyncT",
31 	[C_WF_BITMAP_S]      = "WFBitMapS",
32 	[C_WF_BITMAP_T]      = "WFBitMapT",
33 	[C_WF_SYNC_UUID]     = "WFSyncUUID",
34 	[C_SYNC_SOURCE]      = "SyncSource",
35 	[C_SYNC_TARGET]      = "SyncTarget",
36 	[C_PAUSED_SYNC_S]    = "PausedSyncS",
37 	[C_PAUSED_SYNC_T]    = "PausedSyncT",
38 	[C_VERIFY_S]         = "VerifyS",
39 	[C_VERIFY_T]         = "VerifyT",
40 	[C_AHEAD]            = "Ahead",
41 	[C_BEHIND]           = "Behind",
42 };
43 
44 static const char * const drbd_role_s_names[] = {
45 	[R_PRIMARY]   = "Primary",
46 	[R_SECONDARY] = "Secondary",
47 	[R_UNKNOWN]   = "Unknown"
48 };
49 
50 static const char * const drbd_disk_s_names[] = {
51 	[D_DISKLESS]     = "Diskless",
52 	[D_ATTACHING]    = "Attaching",
53 	[D_FAILED]       = "Failed",
54 	[D_NEGOTIATING]  = "Negotiating",
55 	[D_INCONSISTENT] = "Inconsistent",
56 	[D_OUTDATED]     = "Outdated",
57 	[D_UNKNOWN]      = "DUnknown",
58 	[D_CONSISTENT]   = "Consistent",
59 	[D_UP_TO_DATE]   = "UpToDate",
60 };
61 
62 static const char * const drbd_state_sw_errors[] = {
63 	[-SS_TWO_PRIMARIES] = "Multiple primaries not allowed by config",
64 	[-SS_NO_UP_TO_DATE_DISK] = "Need access to UpToDate data",
65 	[-SS_NO_LOCAL_DISK] = "Can not resync without local disk",
66 	[-SS_NO_REMOTE_DISK] = "Can not resync without remote disk",
67 	[-SS_CONNECTED_OUTDATES] = "Refusing to be Outdated while Connected",
68 	[-SS_PRIMARY_NOP] = "Refusing to be Primary while peer is not outdated",
69 	[-SS_RESYNC_RUNNING] = "Can not start OV/resync since it is already active",
70 	[-SS_ALREADY_STANDALONE] = "Can not disconnect a StandAlone device",
71 	[-SS_CW_FAILED_BY_PEER] = "State change was refused by peer node",
72 	[-SS_IS_DISKLESS] = "Device is diskless, the requested operation requires a disk",
73 	[-SS_DEVICE_IN_USE] = "Device is held open by someone",
74 	[-SS_NO_NET_CONFIG] = "Have no net/connection configuration",
75 	[-SS_NO_VERIFY_ALG] = "Need a verify algorithm to start online verify",
76 	[-SS_NEED_CONNECTION] = "Need a connection to start verify or resync",
77 	[-SS_NOT_SUPPORTED] = "Peer does not support protocol",
78 	[-SS_LOWER_THAN_OUTDATED] = "Disk state is lower than outdated",
79 	[-SS_IN_TRANSIENT_STATE] = "In transient state, retry after next state change",
80 	[-SS_CONCURRENT_ST_CHG] = "Concurrent state changes detected and aborted",
81 	[-SS_OUTDATE_WO_CONN] = "Need a connection for a graceful disconnect/outdate peer",
82 	[-SS_O_VOL_PEER_PRI] = "Other vol primary on peer not allowed by config",
83 };
84 
85 const char *drbd_conn_str(enum drbd_conns s)
86 {
87 	/* enums are unsigned... */
88 	return s > C_BEHIND ? "TOO_LARGE" : drbd_conn_s_names[s];
89 }
90 
91 const char *drbd_role_str(enum drbd_role s)
92 {
93 	return s > R_SECONDARY   ? "TOO_LARGE" : drbd_role_s_names[s];
94 }
95 
96 const char *drbd_disk_str(enum drbd_disk_state s)
97 {
98 	return s > D_UP_TO_DATE    ? "TOO_LARGE" : drbd_disk_s_names[s];
99 }
100 
101 const char *drbd_set_st_err_str(enum drbd_state_rv err)
102 {
103 	return err <= SS_AFTER_LAST_ERROR ? "TOO_SMALL" :
104 	       err > SS_TWO_PRIMARIES ? "TOO_LARGE"
105 			: drbd_state_sw_errors[-err];
106 }
107