git.sesse.net Git - bcachefs-tools-debian/blob - libbcachefs/error.c

   1 #include "bcachefs.h"
   2 #include "error.h"
   3 #include "io.h"
   4 #include "super.h"
   5
   6 bool bch2_inconsistent_error(struct bch_fs *c)
   7 {
   8         set_bit(BCH_FS_ERROR, &c->flags);
   9
  10         switch (c->opts.errors) {
  11         case BCH_ON_ERROR_CONTINUE:
  12                 return false;
  13         case BCH_ON_ERROR_RO:
  14                 if (bch2_fs_emergency_read_only(c))
  15                         bch_err(c, "emergency read only");
  16                 return true;
  17         case BCH_ON_ERROR_PANIC:
  18                 panic(bch2_fmt(c, "panic after error"));
  19                 return true;
  20         default:
  21                 BUG();
  22         }
  23 }
  24
  25 void bch2_fatal_error(struct bch_fs *c)
  26 {
  27         if (bch2_fs_emergency_read_only(c))
  28                 bch_err(c, "emergency read only");
  29 }
  30
  31 void bch2_io_error_work(struct work_struct *work)
  32 {
  33         struct bch_dev *ca = container_of(work, struct bch_dev, io_error_work);
  34         struct bch_fs *c = ca->fs;
  35         bool dev;
  36
  37         mutex_lock(&c->state_lock);
  38         dev = bch2_dev_state_allowed(c, ca, BCH_MEMBER_STATE_RO,
  39                                     BCH_FORCE_IF_DEGRADED);
  40         if (dev
  41             ? __bch2_dev_set_state(c, ca, BCH_MEMBER_STATE_RO,
  42                                   BCH_FORCE_IF_DEGRADED)
  43             : bch2_fs_emergency_read_only(c))
  44                 bch_err(ca,
  45                         "too many IO errors, setting %s RO",
  46                         dev ? "device" : "filesystem");
  47         mutex_unlock(&c->state_lock);
  48 }
  49
  50 void bch2_io_error(struct bch_dev *ca)
  51 {
  52         //queue_work(system_long_wq, &ca->io_error_work);
  53 }
  54
  55 #ifdef __KERNEL__
  56 #define ask_yn()        false
  57 #else
  58 #include "tools-util.h"
  59 #endif
  60
  61 enum fsck_err_ret bch2_fsck_err(struct bch_fs *c, unsigned flags,
  62                                 const char *fmt, ...)
  63 {
  64         struct fsck_err_state *s;
  65         va_list args;
  66         bool fix = false, print = true, suppressing = false;
  67         char _buf[sizeof(s->buf)], *buf = _buf;
  68
  69         mutex_lock(&c->fsck_error_lock);
  70
  71         if (test_bit(BCH_FS_FSCK_DONE, &c->flags))
  72                 goto print;
  73
  74         list_for_each_entry(s, &c->fsck_errors, list)
  75                 if (s->fmt == fmt)
  76                         goto found;
  77
  78         s = kzalloc(sizeof(*s), GFP_KERNEL);
  79         if (!s) {
  80                 if (!c->fsck_alloc_err)
  81                         bch_err(c, "kmalloc err, cannot ratelimit fsck errs");
  82                 c->fsck_alloc_err = true;
  83                 buf = _buf;
  84                 goto print;
  85         }
  86
  87         INIT_LIST_HEAD(&s->list);
  88         s->fmt = fmt;
  89 found:
  90         list_move(&s->list, &c->fsck_errors);
  91         s->nr++;
  92         suppressing     = s->nr == 10;
  93         print           = s->nr <= 10;
  94         buf             = s->buf;
  95 print:
  96         va_start(args, fmt);
  97         vscnprintf(buf, sizeof(_buf), fmt, args);
  98         va_end(args);
  99
 100         if (c->opts.fix_errors == FSCK_OPT_EXIT) {
 101                 bch_err(c, "%s, exiting", buf);
 102                 mutex_unlock(&c->fsck_error_lock);
 103                 return FSCK_ERR_EXIT;
 104         }
 105
 106         if (flags & FSCK_CAN_FIX) {
 107                 if (c->opts.fix_errors == FSCK_OPT_ASK) {
 108                         printk(KERN_ERR "%s: fix?", buf);
 109                         fix = ask_yn();
 110                 } else if (c->opts.fix_errors == FSCK_OPT_YES ||
 111                            (c->opts.nochanges &&
 112                             !(flags & FSCK_CAN_IGNORE))) {
 113                         if (print)
 114                                 bch_err(c, "%s, fixing", buf);
 115                         fix = true;
 116                 } else {
 117                         if (print)
 118                                 bch_err(c, "%s, not fixing", buf);
 119                         fix = false;
 120                 }
 121         } else if (flags & FSCK_NEED_FSCK) {
 122                 if (print)
 123                         bch_err(c, "%s (run fsck to correct)", buf);
 124         } else {
 125                 if (print)
 126                         bch_err(c, "%s (repair unimplemented)", buf);
 127         }
 128
 129         if (suppressing)
 130                 bch_err(c, "Ratelimiting new instances of previous error");
 131
 132         mutex_unlock(&c->fsck_error_lock);
 133
 134         if (fix)
 135                 set_bit(BCH_FS_FSCK_FIXED_ERRORS, &c->flags);
 136
 137         return fix                              ? FSCK_ERR_FIX
 138                 : flags & FSCK_CAN_IGNORE       ? FSCK_ERR_IGNORE
 139                                                 : FSCK_ERR_EXIT;
 140 }
 141
 142 void bch2_flush_fsck_errs(struct bch_fs *c)
 143 {
 144         struct fsck_err_state *s, *n;
 145
 146         mutex_lock(&c->fsck_error_lock);
 147         set_bit(BCH_FS_FSCK_DONE, &c->flags);
 148
 149         list_for_each_entry_safe(s, n, &c->fsck_errors, list) {
 150                 if (s->nr > 10)
 151                         bch_err(c, "Saw %llu errors like:\n    %s", s->nr, s->buf);
 152
 153                 list_del(&s->list);
 154                 kfree(s);
 155         }
 156
 157         mutex_unlock(&c->fsck_error_lock);
 158 }