bcachefs: More informative error message when shutting down due to error

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

fs/bcachefs/error.c

@@ -478,7 +478,9 @@ int __bch2_fsck_err(struct bch_fs *c,
 	} else if (!test_bit(BCH_FS_fsck_running, &c->flags)) {
 		if (c->opts.errors != BCH_ON_ERROR_continue ||
 		    !(flags & (FSCK_CAN_FIX|FSCK_CAN_IGNORE))) {
-			prt_str(out, ", shutting down");
+			prt_str_indented(out, ", shutting down\n"
+					 "error not marked as autofix and not in fsck\n"
+					 "run fsck, and forward to devs so error can be marked for self-healing");
 			inconsistent = true;
 			print = true;
 			ret = -BCH_ERR_fsck_errors_not_fixed;