1 // SPDX-License-Identifier: GPL-2.0
7 #define FSCK_ERR_RATELIMIT_NR 10
9 bool bch2_inconsistent_error(struct bch_fs *c)
11 set_bit(BCH_FS_ERROR, &c->flags);
13 switch (c->opts.errors) {
14 case BCH_ON_ERROR_continue:
17 if (bch2_fs_emergency_read_only(c))
18 bch_err(c, "inconsistency detected - emergency read only");
20 case BCH_ON_ERROR_panic:
21 panic(bch2_fmt(c, "panic after error"));
28 void bch2_topology_error(struct bch_fs *c)
30 if (!test_bit(BCH_FS_TOPOLOGY_REPAIR_DONE, &c->flags))
33 set_bit(BCH_FS_TOPOLOGY_ERROR, &c->flags);
34 if (test_bit(BCH_FS_FSCK_DONE, &c->flags))
35 bch2_inconsistent_error(c);
38 void bch2_fatal_error(struct bch_fs *c)
40 if (bch2_fs_emergency_read_only(c))
41 bch_err(c, "fatal error - emergency read only");
44 void bch2_io_error_work(struct work_struct *work)
46 struct bch_dev *ca = container_of(work, struct bch_dev, io_error_work);
47 struct bch_fs *c = ca->fs;
50 down_write(&c->state_lock);
51 dev = bch2_dev_state_allowed(c, ca, BCH_MEMBER_STATE_ro,
52 BCH_FORCE_IF_DEGRADED);
54 ? __bch2_dev_set_state(c, ca, BCH_MEMBER_STATE_ro,
55 BCH_FORCE_IF_DEGRADED)
56 : bch2_fs_emergency_read_only(c))
58 "too many IO errors, setting %s RO",
59 dev ? "device" : "filesystem");
60 up_write(&c->state_lock);
63 void bch2_io_error(struct bch_dev *ca)
65 //queue_work(system_long_wq, &ca->io_error_work);
76 #define bch2_fsck_ask_yn() YN_NO
79 #include "tools-util.h"
81 enum ask_yn bch2_fsck_ask_yn(void)
88 fputs(" (y,n, or Y,N for all errors of this type) ", stdout);
91 if (getline(&buf, &buflen, stdin) < 0)
92 die("error reading from standard input");
116 static struct fsck_err_state *fsck_err_get(struct bch_fs *c, const char *fmt)
118 struct fsck_err_state *s;
120 if (test_bit(BCH_FS_FSCK_DONE, &c->flags))
123 list_for_each_entry(s, &c->fsck_errors, list)
126 * move it to the head of the list: repeated fsck errors
129 list_move(&s->list, &c->fsck_errors);
133 s = kzalloc(sizeof(*s), GFP_NOFS);
135 if (!c->fsck_alloc_err)
136 bch_err(c, "kmalloc err, cannot ratelimit fsck errs");
137 c->fsck_alloc_err = true;
141 INIT_LIST_HEAD(&s->list);
143 list_add(&s->list, &c->fsck_errors);
147 int bch2_fsck_err(struct bch_fs *c, unsigned flags, const char *fmt, ...)
149 struct fsck_err_state *s = NULL;
151 bool print = true, suppressing = false, inconsistent = false;
152 struct printbuf buf = PRINTBUF, *out = &buf;
153 int ret = -BCH_ERR_fsck_ignore;
156 prt_vprintf(out, fmt, args);
159 mutex_lock(&c->fsck_error_lock);
160 s = fsck_err_get(c, fmt);
163 * We may be called multiple times for the same error on
164 * transaction restart - this memoizes instead of asking the user
165 * multiple times for the same error:
167 if (s->last_msg && !strcmp(buf.buf, s->last_msg)) {
169 mutex_unlock(&c->fsck_error_lock);
175 s->last_msg = kstrdup(buf.buf, GFP_KERNEL);
177 if (c->opts.ratelimit_errors &&
178 !(flags & FSCK_NO_RATELIMIT) &&
179 s->nr >= FSCK_ERR_RATELIMIT_NR) {
180 if (s->nr == FSCK_ERR_RATELIMIT_NR)
189 #ifdef BCACHEFS_LOG_PREFIX
190 if (!strncmp(fmt, "bcachefs:", 9))
191 prt_printf(out, bch2_log_msg(c, ""));
194 if (test_bit(BCH_FS_FSCK_DONE, &c->flags)) {
195 if (c->opts.errors != BCH_ON_ERROR_continue ||
196 !(flags & (FSCK_CAN_FIX|FSCK_CAN_IGNORE))) {
197 prt_str(out, ", shutting down");
199 ret = -BCH_ERR_fsck_errors_not_fixed;
200 } else if (flags & FSCK_CAN_FIX) {
201 prt_str(out, ", fixing");
202 ret = -BCH_ERR_fsck_fix;
204 prt_str(out, ", continuing");
205 ret = -BCH_ERR_fsck_ignore;
207 } else if (c->opts.fix_errors == FSCK_FIX_exit) {
208 prt_str(out, ", exiting");
209 ret = -BCH_ERR_fsck_errors_not_fixed;
210 } else if (flags & FSCK_CAN_FIX) {
211 int fix = s && s->fix
213 : c->opts.fix_errors;
215 if (fix == FSCK_FIX_ask) {
218 prt_str(out, ": fix?");
219 bch2_print_string_as_lines(KERN_ERR, out->buf);
222 ask = bch2_fsck_ask_yn();
224 if (ask >= YN_ALLNO && s)
225 s->fix = ask == YN_ALLNO
231 : -BCH_ERR_fsck_ignore;
232 } else if (fix == FSCK_FIX_yes ||
233 (c->opts.nochanges &&
234 !(flags & FSCK_CAN_IGNORE))) {
235 prt_str(out, ", fixing");
236 ret = -BCH_ERR_fsck_fix;
238 prt_str(out, ", not fixing");
240 } else if (flags & FSCK_NEED_FSCK) {
241 prt_str(out, " (run fsck to correct)");
243 prt_str(out, " (repair unimplemented)");
246 if (ret == -BCH_ERR_fsck_ignore &&
247 (c->opts.fix_errors == FSCK_FIX_exit ||
248 !(flags & FSCK_CAN_IGNORE)))
249 ret = -BCH_ERR_fsck_errors_not_fixed;
252 bch2_print_string_as_lines(KERN_ERR, out->buf);
254 if (!test_bit(BCH_FS_FSCK_DONE, &c->flags) &&
255 (ret != -BCH_ERR_fsck_fix &&
256 ret != -BCH_ERR_fsck_ignore))
257 bch_err(c, "Unable to continue, halting");
258 else if (suppressing)
259 bch_err(c, "Ratelimiting new instances of previous error");
264 mutex_unlock(&c->fsck_error_lock);
269 bch2_inconsistent_error(c);
271 if (ret == -BCH_ERR_fsck_fix) {
272 set_bit(BCH_FS_ERRORS_FIXED, &c->flags);
274 set_bit(BCH_FS_ERRORS_NOT_FIXED, &c->flags);
275 set_bit(BCH_FS_ERROR, &c->flags);
281 void bch2_flush_fsck_errs(struct bch_fs *c)
283 struct fsck_err_state *s, *n;
285 mutex_lock(&c->fsck_error_lock);
287 list_for_each_entry_safe(s, n, &c->fsck_errors, list) {
288 if (s->ratelimited && s->last_msg)
289 bch_err(c, "Saw %llu errors like:\n %s", s->nr, s->last_msg);
296 mutex_unlock(&c->fsck_error_lock);