Merge branch 'for-2.6.37/drivers' into for-linus
[linux-2.6.git] / 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 };
52
53 static const char *drbd_role_s_names[] = {
54         [R_PRIMARY]   = "Primary",
55         [R_SECONDARY] = "Secondary",
56         [R_UNKNOWN]   = "Unknown"
57 };
58
59 static const char *drbd_disk_s_names[] = {
60         [D_DISKLESS]     = "Diskless",
61         [D_ATTACHING]    = "Attaching",
62         [D_FAILED]       = "Failed",
63         [D_NEGOTIATING]  = "Negotiating",
64         [D_INCONSISTENT] = "Inconsistent",
65         [D_OUTDATED]     = "Outdated",
66         [D_UNKNOWN]      = "DUnknown",
67         [D_CONSISTENT]   = "Consistent",
68         [D_UP_TO_DATE]   = "UpToDate",
69 };
70
71 static const char *drbd_state_sw_errors[] = {
72         [-SS_TWO_PRIMARIES] = "Multiple primaries not allowed by config",
73         [-SS_NO_UP_TO_DATE_DISK] = "Need access to UpToDate data",
74         [-SS_NO_LOCAL_DISK] = "Can not resync without local disk",
75         [-SS_NO_REMOTE_DISK] = "Can not resync without remote disk",
76         [-SS_CONNECTED_OUTDATES] = "Refusing to be Outdated while Connected",
77         [-SS_PRIMARY_NOP] = "Refusing to be Primary while peer is not outdated",
78         [-SS_RESYNC_RUNNING] = "Can not start OV/resync since it is already active",
79         [-SS_ALREADY_STANDALONE] = "Can not disconnect a StandAlone device",
80         [-SS_CW_FAILED_BY_PEER] = "State change was refused by peer node",
81         [-SS_IS_DISKLESS] = "Device is diskless, the requested operation requires a disk",
82         [-SS_DEVICE_IN_USE] = "Device is held open by someone",
83         [-SS_NO_NET_CONFIG] = "Have no net/connection configuration",
84         [-SS_NO_VERIFY_ALG] = "Need a verify algorithm to start online verify",
85         [-SS_NEED_CONNECTION] = "Need a connection to start verify or resync",
86         [-SS_NOT_SUPPORTED] = "Peer does not support protocol",
87         [-SS_LOWER_THAN_OUTDATED] = "Disk state is lower than outdated",
88         [-SS_IN_TRANSIENT_STATE] = "In transient state, retry after next state change",
89         [-SS_CONCURRENT_ST_CHG] = "Concurrent state changes detected and aborted",
90 };
91
92 const char *drbd_conn_str(enum drbd_conns s)
93 {
94         /* enums are unsigned... */
95         return s > C_PAUSED_SYNC_T ? "TOO_LARGE" : drbd_conn_s_names[s];
96 }
97
98 const char *drbd_role_str(enum drbd_role s)
99 {
100         return s > R_SECONDARY   ? "TOO_LARGE" : drbd_role_s_names[s];
101 }
102
103 const char *drbd_disk_str(enum drbd_disk_state s)
104 {
105         return s > D_UP_TO_DATE    ? "TOO_LARGE" : drbd_disk_s_names[s];
106 }
107
108 const char *drbd_set_st_err_str(enum drbd_state_ret_codes err)
109 {
110         return err <= SS_AFTER_LAST_ERROR ? "TOO_SMALL" :
111                err > SS_TWO_PRIMARIES ? "TOO_LARGE"
112                         : drbd_state_sw_errors[-err];
113 }