1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
|
// SPDX-License-Identifier: GPL-2.0
#include "bcachefs.h"
#include "error.h"
#include "io.h"
#include "super.h"
#define FSCK_ERR_RATELIMIT_NR 10
bool bch2_inconsistent_error(struct bch_fs *c)
{
set_bit(BCH_FS_ERROR, &c->flags);
switch (c->opts.errors) {
case BCH_ON_ERROR_continue:
return false;
case BCH_ON_ERROR_ro:
if (bch2_fs_emergency_read_only(c))
bch_err(c, "inconsistency detected - emergency read only");
return true;
case BCH_ON_ERROR_panic:
panic(bch2_fmt(c, "panic after error"));
return true;
default:
BUG();
}
}
void bch2_topology_error(struct bch_fs *c)
{
set_bit(BCH_FS_TOPOLOGY_ERROR, &c->flags);
if (test_bit(BCH_FS_INITIAL_GC_DONE, &c->flags))
bch2_inconsistent_error(c);
}
void bch2_fatal_error(struct bch_fs *c)
{
if (bch2_fs_emergency_read_only(c))
bch_err(c, "fatal error - emergency read only");
}
void bch2_io_error_work(struct work_struct *work)
{
struct bch_dev *ca = container_of(work, struct bch_dev, io_error_work);
struct bch_fs *c = ca->fs;
bool dev;
down_write(&c->state_lock);
dev = bch2_dev_state_allowed(c, ca, BCH_MEMBER_STATE_ro,
BCH_FORCE_IF_DEGRADED);
if (dev
? __bch2_dev_set_state(c, ca, BCH_MEMBER_STATE_ro,
BCH_FORCE_IF_DEGRADED)
: bch2_fs_emergency_read_only(c))
bch_err(ca,
"too many IO errors, setting %s RO",
dev ? "device" : "filesystem");
up_write(&c->state_lock);
}
void bch2_io_error(struct bch_dev *ca)
{
//queue_work(system_long_wq, &ca->io_error_work);
}
#ifdef __KERNEL__
#define ask_yn() false
#else
#include "tools-util.h"
#endif
static struct fsck_err_state *fsck_err_get(struct bch_fs *c, const char *fmt)
{
struct fsck_err_state *s;
if (test_bit(BCH_FS_FSCK_DONE, &c->flags))
return NULL;
list_for_each_entry(s, &c->fsck_errors, list)
if (s->fmt == fmt) {
/*
* move it to the head of the list: repeated fsck errors
* are common
*/
list_move(&s->list, &c->fsck_errors);
return s;
}
s = kzalloc(sizeof(*s), GFP_NOFS);
if (!s) {
if (!c->fsck_alloc_err)
bch_err(c, "kmalloc err, cannot ratelimit fsck errs");
c->fsck_alloc_err = true;
return NULL;
}
INIT_LIST_HEAD(&s->list);
s->fmt = fmt;
s->buf = PRINTBUF;
list_add(&s->list, &c->fsck_errors);
return s;
}
int bch2_fsck_err(struct bch_fs *c, unsigned flags, const char *fmt, ...)
{
struct fsck_err_state *s = NULL;
va_list args;
bool print = true, suppressing = false;
struct printbuf buf = PRINTBUF, *out = &buf;
int ret = -BCH_ERR_fsck_ignore;
mutex_lock(&c->fsck_error_lock);
s = fsck_err_get(c, fmt);
if (s) {
if (c->opts.ratelimit_errors &&
!(flags & FSCK_NO_RATELIMIT) &&
s->nr >= FSCK_ERR_RATELIMIT_NR) {
if (s->nr == FSCK_ERR_RATELIMIT_NR)
suppressing = true;
else
print = false;
}
printbuf_reset(&s->buf);
out = &s->buf;
s->nr++;
}
if (!strncmp(fmt, "bcachefs:", 9))
prt_printf(out, bch2_log_msg(c, ""));
va_start(args, fmt);
prt_vprintf(out, fmt, args);
va_end(args);
if (test_bit(BCH_FS_FSCK_DONE, &c->flags)) {
if (c->opts.errors != BCH_ON_ERROR_continue ||
!(flags & (FSCK_CAN_FIX|FSCK_CAN_IGNORE))) {
prt_str(out, ", shutting down");
bch2_inconsistent_error(c);
ret = -BCH_ERR_fsck_errors_not_fixed;
} else if (flags & FSCK_CAN_FIX) {
prt_str(out, ", fixing");
ret = -BCH_ERR_fsck_fix;
} else {
prt_str(out, ", continuing");
ret = -BCH_ERR_fsck_ignore;
}
} else if (c->opts.fix_errors == FSCK_OPT_EXIT) {
prt_str(out, ", exiting");
ret = -BCH_ERR_fsck_errors_not_fixed;
} else if (flags & FSCK_CAN_FIX) {
if (c->opts.fix_errors == FSCK_OPT_ASK) {
prt_str(out, ": fix?");
bch2_print_string_as_lines(KERN_ERR, out->buf);
print = false;
ret = ask_yn()
? -BCH_ERR_fsck_fix
: -BCH_ERR_fsck_ignore;
} else if (c->opts.fix_errors == FSCK_OPT_YES ||
(c->opts.nochanges &&
!(flags & FSCK_CAN_IGNORE))) {
prt_str(out, ", fixing");
ret = -BCH_ERR_fsck_fix;
} else {
prt_str(out, ", not fixing");
}
} else if (flags & FSCK_NEED_FSCK) {
prt_str(out, " (run fsck to correct)");
} else {
prt_str(out, " (repair unimplemented)");
}
if (ret == -BCH_ERR_fsck_ignore &&
(c->opts.fix_errors == FSCK_OPT_EXIT ||
!(flags & FSCK_CAN_IGNORE)))
ret = -BCH_ERR_fsck_errors_not_fixed;
if (print)
bch2_print_string_as_lines(KERN_ERR, out->buf);
if (!test_bit(BCH_FS_FSCK_DONE, &c->flags) &&
(ret != -BCH_ERR_fsck_fix &&
ret != -BCH_ERR_fsck_ignore))
bch_err(c, "Unable to continue, halting");
else if (suppressing)
bch_err(c, "Ratelimiting new instances of previous error");
mutex_unlock(&c->fsck_error_lock);
printbuf_exit(&buf);
if (ret == -BCH_ERR_fsck_fix) {
set_bit(BCH_FS_ERRORS_FIXED, &c->flags);
} else {
set_bit(BCH_FS_ERRORS_NOT_FIXED, &c->flags);
set_bit(BCH_FS_ERROR, &c->flags);
}
return ret;
}
void bch2_flush_fsck_errs(struct bch_fs *c)
{
struct fsck_err_state *s, *n;
mutex_lock(&c->fsck_error_lock);
list_for_each_entry_safe(s, n, &c->fsck_errors, list) {
if (s->ratelimited)
bch_err(c, "Saw %llu errors like:\n %s", s->nr, s->buf.buf);
list_del(&s->list);
printbuf_exit(&s->buf);
kfree(s);
}
mutex_unlock(&c->fsck_error_lock);
}
|
