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,Y,N) ", stdout);
91 if (getline(&buf, &buflen, stdin) < 0)
92 die("error reading from standard input");
115 static struct fsck_err_state *fsck_err_get(struct bch_fs *c, const char *fmt)
117 struct fsck_err_state *s;
119 if (test_bit(BCH_FS_FSCK_DONE, &c->flags))
122 list_for_each_entry(s, &c->fsck_errors, list)
125 * move it to the head of the list: repeated fsck errors
128 list_move(&s->list, &c->fsck_errors);
132 s = kzalloc(sizeof(*s), GFP_NOFS);
134 if (!c->fsck_alloc_err)
135 bch_err(c, "kmalloc err, cannot ratelimit fsck errs");
136 c->fsck_alloc_err = true;
140 INIT_LIST_HEAD(&s->list);
142 list_add(&s->list, &c->fsck_errors);
146 int bch2_fsck_err(struct bch_fs *c, unsigned flags, const char *fmt, ...)
148 struct fsck_err_state *s = NULL;
150 bool print = true, suppressing = false, inconsistent = false;
151 struct printbuf buf = PRINTBUF, *out = &buf;
152 int ret = -BCH_ERR_fsck_ignore;
155 prt_vprintf(out, fmt, args);
158 mutex_lock(&c->fsck_error_lock);
159 s = fsck_err_get(c, fmt);
162 * We may be called multiple times for the same error on
163 * transaction restart - this memoizes instead of asking the user
164 * multiple times for the same error:
166 if (s->last_msg && !strcmp(buf.buf, s->last_msg)) {
168 mutex_unlock(&c->fsck_error_lock);
174 s->last_msg = kstrdup(buf.buf, GFP_KERNEL);
176 if (c->opts.ratelimit_errors &&
177 !(flags & FSCK_NO_RATELIMIT) &&
178 s->nr >= FSCK_ERR_RATELIMIT_NR) {
179 if (s->nr == FSCK_ERR_RATELIMIT_NR)
188 #ifdef BCACHEFS_LOG_PREFIX
189 if (!strncmp(fmt, "bcachefs:", 9))
190 prt_printf(out, bch2_log_msg(c, ""));
193 if (test_bit(BCH_FS_FSCK_DONE, &c->flags)) {
194 if (c->opts.errors != BCH_ON_ERROR_continue ||
195 !(flags & (FSCK_CAN_FIX|FSCK_CAN_IGNORE))) {
196 prt_str(out, ", shutting down");
198 ret = -BCH_ERR_fsck_errors_not_fixed;
199 } else if (flags & FSCK_CAN_FIX) {
200 prt_str(out, ", fixing");
201 ret = -BCH_ERR_fsck_fix;
203 prt_str(out, ", continuing");
204 ret = -BCH_ERR_fsck_ignore;
206 } else if (c->opts.fix_errors == FSCK_OPT_EXIT) {
207 prt_str(out, ", exiting");
208 ret = -BCH_ERR_fsck_errors_not_fixed;
209 } else if (flags & FSCK_CAN_FIX) {
210 int fix = s && s->fix
212 : c->opts.fix_errors;
214 if (fix == FSCK_OPT_ASK) {
217 prt_str(out, ": fix?");
218 bch2_print_string_as_lines(KERN_ERR, out->buf);
221 ask = bch2_fsck_ask_yn();
223 if (ask >= YN_ALLNO && s)
224 s->fix = ask == YN_ALLNO
230 : -BCH_ERR_fsck_ignore;
231 } else if (fix == FSCK_OPT_YES ||
232 (c->opts.nochanges &&
233 !(flags & FSCK_CAN_IGNORE))) {
234 prt_str(out, ", fixing");
235 ret = -BCH_ERR_fsck_fix;
237 prt_str(out, ", not fixing");
239 } else if (flags & FSCK_NEED_FSCK) {
240 prt_str(out, " (run fsck to correct)");
242 prt_str(out, " (repair unimplemented)");
245 if (ret == -BCH_ERR_fsck_ignore &&
246 (c->opts.fix_errors == FSCK_OPT_EXIT ||
247 !(flags & FSCK_CAN_IGNORE)))
248 ret = -BCH_ERR_fsck_errors_not_fixed;
251 bch2_print_string_as_lines(KERN_ERR, out->buf);
253 if (!test_bit(BCH_FS_FSCK_DONE, &c->flags) &&
254 (ret != -BCH_ERR_fsck_fix &&
255 ret != -BCH_ERR_fsck_ignore))
256 bch_err(c, "Unable to continue, halting");
257 else if (suppressing)
258 bch_err(c, "Ratelimiting new instances of previous error");
263 mutex_unlock(&c->fsck_error_lock);
268 bch2_inconsistent_error(c);
270 if (ret == -BCH_ERR_fsck_fix) {
271 set_bit(BCH_FS_ERRORS_FIXED, &c->flags);
273 set_bit(BCH_FS_ERRORS_NOT_FIXED, &c->flags);
274 set_bit(BCH_FS_ERROR, &c->flags);
280 void bch2_flush_fsck_errs(struct bch_fs *c)
282 struct fsck_err_state *s, *n;
284 mutex_lock(&c->fsck_error_lock);
286 list_for_each_entry_safe(s, n, &c->fsck_errors, list) {
287 if (s->ratelimited && s->last_msg)
288 bch_err(c, "Saw %llu errors like:\n %s", s->nr, s->last_msg);
295 mutex_unlock(&c->fsck_error_lock);