1 // SPDX-License-Identifier: GPL-2.0
6 #include "thread_with_file.h"
8 #define FSCK_ERR_RATELIMIT_NR 10
10 bool bch2_inconsistent_error(struct bch_fs *c)
12 set_bit(BCH_FS_error, &c->flags);
14 switch (c->opts.errors) {
15 case BCH_ON_ERROR_continue:
18 if (bch2_fs_emergency_read_only(c))
19 bch_err(c, "inconsistency detected - emergency read only");
21 case BCH_ON_ERROR_panic:
22 panic(bch2_fmt(c, "panic after error"));
29 int bch2_topology_error(struct bch_fs *c)
31 set_bit(BCH_FS_topology_error, &c->flags);
32 if (!test_bit(BCH_FS_fsck_running, &c->flags)) {
33 bch2_inconsistent_error(c);
34 return -BCH_ERR_btree_need_topology_repair;
36 return bch2_run_explicit_recovery_pass(c, BCH_RECOVERY_PASS_check_topology) ?:
37 -BCH_ERR_btree_node_read_validate_error;
41 void bch2_fatal_error(struct bch_fs *c)
43 if (bch2_fs_emergency_read_only(c))
44 bch_err(c, "fatal error - emergency read only");
47 void bch2_io_error_work(struct work_struct *work)
49 struct bch_dev *ca = container_of(work, struct bch_dev, io_error_work);
50 struct bch_fs *c = ca->fs;
53 down_write(&c->state_lock);
54 dev = bch2_dev_state_allowed(c, ca, BCH_MEMBER_STATE_ro,
55 BCH_FORCE_IF_DEGRADED);
57 ? __bch2_dev_set_state(c, ca, BCH_MEMBER_STATE_ro,
58 BCH_FORCE_IF_DEGRADED)
59 : bch2_fs_emergency_read_only(c))
61 "too many IO errors, setting %s RO",
62 dev ? "device" : "filesystem");
63 up_write(&c->state_lock);
66 void bch2_io_error(struct bch_dev *ca, enum bch_member_error_type type)
68 atomic64_inc(&ca->errors[type]);
69 //queue_work(system_long_wq, &ca->io_error_work);
79 static enum ask_yn parse_yn_response(char *buf)
98 static enum ask_yn bch2_fsck_ask_yn(struct bch_fs *c)
100 struct stdio_redirect *stdio = c->stdio;
102 if (c->stdio_filter && c->stdio_filter != current)
112 bch2_print(c, " (y,n, or Y,N for all errors of this type) ");
114 int r = bch2_stdio_redirect_readline(stdio, buf, sizeof(buf) - 1);
118 } while ((ret = parse_yn_response(buf)) < 0);
124 #include "tools-util.h"
126 static enum ask_yn bch2_fsck_ask_yn(struct bch_fs *c)
133 fputs(" (y,n, or Y,N for all errors of this type) ", stdout);
136 if (getline(&buf, &buflen, stdin) < 0)
137 die("error reading from standard input");
138 } while ((ret = parse_yn_response(buf)) < 0);
146 static struct fsck_err_state *fsck_err_get(struct bch_fs *c, const char *fmt)
148 struct fsck_err_state *s;
150 if (!test_bit(BCH_FS_fsck_running, &c->flags))
153 list_for_each_entry(s, &c->fsck_error_msgs, list)
156 * move it to the head of the list: repeated fsck errors
159 list_move(&s->list, &c->fsck_error_msgs);
163 s = kzalloc(sizeof(*s), GFP_NOFS);
165 if (!c->fsck_alloc_msgs_err)
166 bch_err(c, "kmalloc err, cannot ratelimit fsck errs");
167 c->fsck_alloc_msgs_err = true;
171 INIT_LIST_HEAD(&s->list);
173 list_add(&s->list, &c->fsck_error_msgs);
177 int bch2_fsck_err(struct bch_fs *c,
178 enum bch_fsck_flags flags,
179 enum bch_sb_error_id err,
180 const char *fmt, ...)
182 struct fsck_err_state *s = NULL;
184 bool print = true, suppressing = false, inconsistent = false;
185 struct printbuf buf = PRINTBUF, *out = &buf;
186 int ret = -BCH_ERR_fsck_ignore;
188 if ((flags & FSCK_CAN_FIX) &&
189 test_bit(err, c->sb.errors_silent))
190 return -BCH_ERR_fsck_fix;
192 bch2_sb_error_count(c, err);
195 prt_vprintf(out, fmt, args);
198 mutex_lock(&c->fsck_error_msgs_lock);
199 s = fsck_err_get(c, fmt);
202 * We may be called multiple times for the same error on
203 * transaction restart - this memoizes instead of asking the user
204 * multiple times for the same error:
206 if (s->last_msg && !strcmp(buf.buf, s->last_msg)) {
208 mutex_unlock(&c->fsck_error_msgs_lock);
214 s->last_msg = kstrdup(buf.buf, GFP_KERNEL);
216 if (c->opts.ratelimit_errors &&
217 !(flags & FSCK_NO_RATELIMIT) &&
218 s->nr >= FSCK_ERR_RATELIMIT_NR) {
219 if (s->nr == FSCK_ERR_RATELIMIT_NR)
228 #ifdef BCACHEFS_LOG_PREFIX
229 if (!strncmp(fmt, "bcachefs:", 9))
230 prt_printf(out, bch2_log_msg(c, ""));
233 if (!test_bit(BCH_FS_fsck_running, &c->flags)) {
234 if (c->opts.errors != BCH_ON_ERROR_continue ||
235 !(flags & (FSCK_CAN_FIX|FSCK_CAN_IGNORE))) {
236 prt_str(out, ", shutting down");
238 ret = -BCH_ERR_fsck_errors_not_fixed;
239 } else if (flags & FSCK_CAN_FIX) {
240 prt_str(out, ", fixing");
241 ret = -BCH_ERR_fsck_fix;
243 prt_str(out, ", continuing");
244 ret = -BCH_ERR_fsck_ignore;
246 } else if (c->opts.fix_errors == FSCK_FIX_exit) {
247 prt_str(out, ", exiting");
248 ret = -BCH_ERR_fsck_errors_not_fixed;
249 } else if (flags & FSCK_CAN_FIX) {
250 int fix = s && s->fix
252 : c->opts.fix_errors;
254 if (fix == FSCK_FIX_ask) {
257 prt_str(out, ": fix?");
258 if (bch2_fs_stdio_redirect(c))
259 bch2_print(c, "%s", out->buf);
261 bch2_print_string_as_lines(KERN_ERR, out->buf);
264 ask = bch2_fsck_ask_yn(c);
266 if (ask >= YN_ALLNO && s)
267 s->fix = ask == YN_ALLNO
273 : -BCH_ERR_fsck_ignore;
274 } else if (fix == FSCK_FIX_yes ||
275 (c->opts.nochanges &&
276 !(flags & FSCK_CAN_IGNORE))) {
277 prt_str(out, ", fixing");
278 ret = -BCH_ERR_fsck_fix;
280 prt_str(out, ", not fixing");
282 } else if (flags & FSCK_NEED_FSCK) {
283 prt_str(out, " (run fsck to correct)");
285 prt_str(out, " (repair unimplemented)");
288 if (ret == -BCH_ERR_fsck_ignore &&
289 (c->opts.fix_errors == FSCK_FIX_exit ||
290 !(flags & FSCK_CAN_IGNORE)))
291 ret = -BCH_ERR_fsck_errors_not_fixed;
294 if (bch2_fs_stdio_redirect(c))
295 bch2_print(c, "%s\n", out->buf);
297 bch2_print_string_as_lines(KERN_ERR, out->buf);
300 if (test_bit(BCH_FS_fsck_running, &c->flags) &&
301 (ret != -BCH_ERR_fsck_fix &&
302 ret != -BCH_ERR_fsck_ignore))
303 bch_err(c, "Unable to continue, halting");
304 else if (suppressing)
305 bch_err(c, "Ratelimiting new instances of previous error");
310 mutex_unlock(&c->fsck_error_msgs_lock);
315 bch2_inconsistent_error(c);
317 if (ret == -BCH_ERR_fsck_fix) {
318 set_bit(BCH_FS_errors_fixed, &c->flags);
320 set_bit(BCH_FS_errors_not_fixed, &c->flags);
321 set_bit(BCH_FS_error, &c->flags);
327 void bch2_flush_fsck_errs(struct bch_fs *c)
329 struct fsck_err_state *s, *n;
331 mutex_lock(&c->fsck_error_msgs_lock);
333 list_for_each_entry_safe(s, n, &c->fsck_error_msgs, list) {
334 if (s->ratelimited && s->last_msg)
335 bch_err(c, "Saw %llu errors like:\n %s", s->nr, s->last_msg);
342 mutex_unlock(&c->fsck_error_msgs_lock);