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18#include "xfs.h"
19#include "xfs_fs.h"
20#include "xfs_types.h"
21#include "xfs_bit.h"
22#include "xfs_log.h"
23#include "xfs_inum.h"
24#include "xfs_trans.h"
25#include "xfs_sb.h"
26#include "xfs_ag.h"
27#include "xfs_mount.h"
28#include "xfs_error.h"
29#include "xfs_bmap_btree.h"
30#include "xfs_alloc_btree.h"
31#include "xfs_ialloc_btree.h"
32#include "xfs_dinode.h"
33#include "xfs_inode.h"
34#include "xfs_inode_item.h"
35#include "xfs_alloc.h"
36#include "xfs_ialloc.h"
37#include "xfs_log_priv.h"
38#include "xfs_buf_item.h"
39#include "xfs_log_recover.h"
40#include "xfs_extfree_item.h"
41#include "xfs_trans_priv.h"
42#include "xfs_quota.h"
43#include "xfs_rw.h"
44#include "xfs_utils.h"
45#include "xfs_trace.h"
46
47STATIC int xlog_find_zeroed(xlog_t *, xfs_daddr_t *);
48STATIC int xlog_clear_stale_blocks(xlog_t *, xfs_lsn_t);
49#if defined(DEBUG)
50STATIC void xlog_recover_check_summary(xlog_t *);
51#else
52#define xlog_recover_check_summary(log)
53#endif
54
55
56
57
58
59struct xfs_buf_cancel {
60 xfs_daddr_t bc_blkno;
61 uint bc_len;
62 int bc_refcount;
63 struct list_head bc_list;
64};
65
66
67
68
69
70
71
72
73
74
75
76static inline int
77xlog_buf_bbcount_valid(
78 xlog_t *log,
79 int bbcount)
80{
81 return bbcount > 0 && bbcount <= log->l_logBBsize;
82}
83
84
85
86
87
88
89STATIC xfs_buf_t *
90xlog_get_bp(
91 xlog_t *log,
92 int nbblks)
93{
94 if (!xlog_buf_bbcount_valid(log, nbblks)) {
95 xfs_warn(log->l_mp, "Invalid block length (0x%x) for buffer",
96 nbblks);
97 XFS_ERROR_REPORT(__func__, XFS_ERRLEVEL_HIGH, log->l_mp);
98 return NULL;
99 }
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117 if (nbblks > 1 && log->l_sectBBsize > 1)
118 nbblks += log->l_sectBBsize;
119 nbblks = round_up(nbblks, log->l_sectBBsize);
120
121 return xfs_buf_get_uncached(log->l_mp->m_logdev_targp,
122 BBTOB(nbblks), 0);
123}
124
125STATIC void
126xlog_put_bp(
127 xfs_buf_t *bp)
128{
129 xfs_buf_free(bp);
130}
131
132
133
134
135
136STATIC xfs_caddr_t
137xlog_align(
138 xlog_t *log,
139 xfs_daddr_t blk_no,
140 int nbblks,
141 xfs_buf_t *bp)
142{
143 xfs_daddr_t offset = blk_no & ((xfs_daddr_t)log->l_sectBBsize - 1);
144
145 ASSERT(BBTOB(offset + nbblks) <= XFS_BUF_SIZE(bp));
146 return XFS_BUF_PTR(bp) + BBTOB(offset);
147}
148
149
150
151
152
153STATIC int
154xlog_bread_noalign(
155 xlog_t *log,
156 xfs_daddr_t blk_no,
157 int nbblks,
158 xfs_buf_t *bp)
159{
160 int error;
161
162 if (!xlog_buf_bbcount_valid(log, nbblks)) {
163 xfs_warn(log->l_mp, "Invalid block length (0x%x) for buffer",
164 nbblks);
165 XFS_ERROR_REPORT(__func__, XFS_ERRLEVEL_HIGH, log->l_mp);
166 return EFSCORRUPTED;
167 }
168
169 blk_no = round_down(blk_no, log->l_sectBBsize);
170 nbblks = round_up(nbblks, log->l_sectBBsize);
171
172 ASSERT(nbblks > 0);
173 ASSERT(BBTOB(nbblks) <= XFS_BUF_SIZE(bp));
174
175 XFS_BUF_SET_ADDR(bp, log->l_logBBstart + blk_no);
176 XFS_BUF_READ(bp);
177 XFS_BUF_BUSY(bp);
178 XFS_BUF_SET_COUNT(bp, BBTOB(nbblks));
179 XFS_BUF_SET_TARGET(bp, log->l_mp->m_logdev_targp);
180
181 xfsbdstrat(log->l_mp, bp);
182 error = xfs_buf_iowait(bp);
183 if (error)
184 xfs_ioerror_alert("xlog_bread", log->l_mp,
185 bp, XFS_BUF_ADDR(bp));
186 return error;
187}
188
189STATIC int
190xlog_bread(
191 xlog_t *log,
192 xfs_daddr_t blk_no,
193 int nbblks,
194 xfs_buf_t *bp,
195 xfs_caddr_t *offset)
196{
197 int error;
198
199 error = xlog_bread_noalign(log, blk_no, nbblks, bp);
200 if (error)
201 return error;
202
203 *offset = xlog_align(log, blk_no, nbblks, bp);
204 return 0;
205}
206
207
208
209
210
211
212STATIC int
213xlog_bwrite(
214 xlog_t *log,
215 xfs_daddr_t blk_no,
216 int nbblks,
217 xfs_buf_t *bp)
218{
219 int error;
220
221 if (!xlog_buf_bbcount_valid(log, nbblks)) {
222 xfs_warn(log->l_mp, "Invalid block length (0x%x) for buffer",
223 nbblks);
224 XFS_ERROR_REPORT(__func__, XFS_ERRLEVEL_HIGH, log->l_mp);
225 return EFSCORRUPTED;
226 }
227
228 blk_no = round_down(blk_no, log->l_sectBBsize);
229 nbblks = round_up(nbblks, log->l_sectBBsize);
230
231 ASSERT(nbblks > 0);
232 ASSERT(BBTOB(nbblks) <= XFS_BUF_SIZE(bp));
233
234 XFS_BUF_SET_ADDR(bp, log->l_logBBstart + blk_no);
235 XFS_BUF_ZEROFLAGS(bp);
236 XFS_BUF_BUSY(bp);
237 XFS_BUF_HOLD(bp);
238 XFS_BUF_PSEMA(bp, PRIBIO);
239 XFS_BUF_SET_COUNT(bp, BBTOB(nbblks));
240 XFS_BUF_SET_TARGET(bp, log->l_mp->m_logdev_targp);
241
242 if ((error = xfs_bwrite(log->l_mp, bp)))
243 xfs_ioerror_alert("xlog_bwrite", log->l_mp,
244 bp, XFS_BUF_ADDR(bp));
245 return error;
246}
247
248#ifdef DEBUG
249
250
251
252STATIC void
253xlog_header_check_dump(
254 xfs_mount_t *mp,
255 xlog_rec_header_t *head)
256{
257 xfs_debug(mp, "%s: SB : uuid = %pU, fmt = %d\n",
258 __func__, &mp->m_sb.sb_uuid, XLOG_FMT);
259 xfs_debug(mp, " log : uuid = %pU, fmt = %d\n",
260 &head->h_fs_uuid, be32_to_cpu(head->h_fmt));
261}
262#else
263#define xlog_header_check_dump(mp, head)
264#endif
265
266
267
268
269STATIC int
270xlog_header_check_recover(
271 xfs_mount_t *mp,
272 xlog_rec_header_t *head)
273{
274 ASSERT(be32_to_cpu(head->h_magicno) == XLOG_HEADER_MAGIC_NUM);
275
276
277
278
279
280
281 if (unlikely(be32_to_cpu(head->h_fmt) != XLOG_FMT)) {
282 xfs_warn(mp,
283 "dirty log written in incompatible format - can't recover");
284 xlog_header_check_dump(mp, head);
285 XFS_ERROR_REPORT("xlog_header_check_recover(1)",
286 XFS_ERRLEVEL_HIGH, mp);
287 return XFS_ERROR(EFSCORRUPTED);
288 } else if (unlikely(!uuid_equal(&mp->m_sb.sb_uuid, &head->h_fs_uuid))) {
289 xfs_warn(mp,
290 "dirty log entry has mismatched uuid - can't recover");
291 xlog_header_check_dump(mp, head);
292 XFS_ERROR_REPORT("xlog_header_check_recover(2)",
293 XFS_ERRLEVEL_HIGH, mp);
294 return XFS_ERROR(EFSCORRUPTED);
295 }
296 return 0;
297}
298
299
300
301
302STATIC int
303xlog_header_check_mount(
304 xfs_mount_t *mp,
305 xlog_rec_header_t *head)
306{
307 ASSERT(be32_to_cpu(head->h_magicno) == XLOG_HEADER_MAGIC_NUM);
308
309 if (uuid_is_nil(&head->h_fs_uuid)) {
310
311
312
313
314
315 xfs_warn(mp, "nil uuid in log - IRIX style log");
316 } else if (unlikely(!uuid_equal(&mp->m_sb.sb_uuid, &head->h_fs_uuid))) {
317 xfs_warn(mp, "log has mismatched uuid - can't recover");
318 xlog_header_check_dump(mp, head);
319 XFS_ERROR_REPORT("xlog_header_check_mount",
320 XFS_ERRLEVEL_HIGH, mp);
321 return XFS_ERROR(EFSCORRUPTED);
322 }
323 return 0;
324}
325
326STATIC void
327xlog_recover_iodone(
328 struct xfs_buf *bp)
329{
330 if (XFS_BUF_GETERROR(bp)) {
331
332
333
334
335 xfs_ioerror_alert("xlog_recover_iodone",
336 bp->b_target->bt_mount, bp,
337 XFS_BUF_ADDR(bp));
338 xfs_force_shutdown(bp->b_target->bt_mount,
339 SHUTDOWN_META_IO_ERROR);
340 }
341 XFS_BUF_CLR_IODONE_FUNC(bp);
342 xfs_buf_ioend(bp, 0);
343}
344
345
346
347
348
349
350
351STATIC int
352xlog_find_cycle_start(
353 xlog_t *log,
354 xfs_buf_t *bp,
355 xfs_daddr_t first_blk,
356 xfs_daddr_t *last_blk,
357 uint cycle)
358{
359 xfs_caddr_t offset;
360 xfs_daddr_t mid_blk;
361 xfs_daddr_t end_blk;
362 uint mid_cycle;
363 int error;
364
365 end_blk = *last_blk;
366 mid_blk = BLK_AVG(first_blk, end_blk);
367 while (mid_blk != first_blk && mid_blk != end_blk) {
368 error = xlog_bread(log, mid_blk, 1, bp, &offset);
369 if (error)
370 return error;
371 mid_cycle = xlog_get_cycle(offset);
372 if (mid_cycle == cycle)
373 end_blk = mid_blk;
374 else
375 first_blk = mid_blk;
376 mid_blk = BLK_AVG(first_blk, end_blk);
377 }
378 ASSERT((mid_blk == first_blk && mid_blk+1 == end_blk) ||
379 (mid_blk == end_blk && mid_blk-1 == first_blk));
380
381 *last_blk = end_blk;
382
383 return 0;
384}
385
386
387
388
389
390
391
392
393
394STATIC int
395xlog_find_verify_cycle(
396 xlog_t *log,
397 xfs_daddr_t start_blk,
398 int nbblks,
399 uint stop_on_cycle_no,
400 xfs_daddr_t *new_blk)
401{
402 xfs_daddr_t i, j;
403 uint cycle;
404 xfs_buf_t *bp;
405 xfs_daddr_t bufblks;
406 xfs_caddr_t buf = NULL;
407 int error = 0;
408
409
410
411
412
413
414
415 bufblks = 1 << ffs(nbblks);
416 while (!(bp = xlog_get_bp(log, bufblks))) {
417 bufblks >>= 1;
418 if (bufblks < log->l_sectBBsize)
419 return ENOMEM;
420 }
421
422 for (i = start_blk; i < start_blk + nbblks; i += bufblks) {
423 int bcount;
424
425 bcount = min(bufblks, (start_blk + nbblks - i));
426
427 error = xlog_bread(log, i, bcount, bp, &buf);
428 if (error)
429 goto out;
430
431 for (j = 0; j < bcount; j++) {
432 cycle = xlog_get_cycle(buf);
433 if (cycle == stop_on_cycle_no) {
434 *new_blk = i+j;
435 goto out;
436 }
437
438 buf += BBSIZE;
439 }
440 }
441
442 *new_blk = -1;
443
444out:
445 xlog_put_bp(bp);
446 return error;
447}
448
449
450
451
452
453
454
455
456
457
458
459
460
461STATIC int
462xlog_find_verify_log_record(
463 xlog_t *log,
464 xfs_daddr_t start_blk,
465 xfs_daddr_t *last_blk,
466 int extra_bblks)
467{
468 xfs_daddr_t i;
469 xfs_buf_t *bp;
470 xfs_caddr_t offset = NULL;
471 xlog_rec_header_t *head = NULL;
472 int error = 0;
473 int smallmem = 0;
474 int num_blks = *last_blk - start_blk;
475 int xhdrs;
476
477 ASSERT(start_blk != 0 || *last_blk != start_blk);
478
479 if (!(bp = xlog_get_bp(log, num_blks))) {
480 if (!(bp = xlog_get_bp(log, 1)))
481 return ENOMEM;
482 smallmem = 1;
483 } else {
484 error = xlog_bread(log, start_blk, num_blks, bp, &offset);
485 if (error)
486 goto out;
487 offset += ((num_blks - 1) << BBSHIFT);
488 }
489
490 for (i = (*last_blk) - 1; i >= 0; i--) {
491 if (i < start_blk) {
492
493 xfs_warn(log->l_mp,
494 "Log inconsistent (didn't find previous header)");
495 ASSERT(0);
496 error = XFS_ERROR(EIO);
497 goto out;
498 }
499
500 if (smallmem) {
501 error = xlog_bread(log, i, 1, bp, &offset);
502 if (error)
503 goto out;
504 }
505
506 head = (xlog_rec_header_t *)offset;
507
508 if (XLOG_HEADER_MAGIC_NUM == be32_to_cpu(head->h_magicno))
509 break;
510
511 if (!smallmem)
512 offset -= BBSIZE;
513 }
514
515
516
517
518
519
520 if (i == -1) {
521 error = -1;
522 goto out;
523 }
524
525
526
527
528
529 if ((error = xlog_header_check_mount(log->l_mp, head)))
530 goto out;
531
532
533
534
535
536
537
538
539 if (xfs_sb_version_haslogv2(&log->l_mp->m_sb)) {
540 uint h_size = be32_to_cpu(head->h_size);
541
542 xhdrs = h_size / XLOG_HEADER_CYCLE_SIZE;
543 if (h_size % XLOG_HEADER_CYCLE_SIZE)
544 xhdrs++;
545 } else {
546 xhdrs = 1;
547 }
548
549 if (*last_blk - i + extra_bblks !=
550 BTOBB(be32_to_cpu(head->h_len)) + xhdrs)
551 *last_blk = i;
552
553out:
554 xlog_put_bp(bp);
555 return error;
556}
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571STATIC int
572xlog_find_head(
573 xlog_t *log,
574 xfs_daddr_t *return_head_blk)
575{
576 xfs_buf_t *bp;
577 xfs_caddr_t offset;
578 xfs_daddr_t new_blk, first_blk, start_blk, last_blk, head_blk;
579 int num_scan_bblks;
580 uint first_half_cycle, last_half_cycle;
581 uint stop_on_cycle;
582 int error, log_bbnum = log->l_logBBsize;
583
584
585 if ((error = xlog_find_zeroed(log, &first_blk)) == -1) {
586 *return_head_blk = first_blk;
587
588
589 if (!first_blk) {
590
591
592
593
594 xfs_warn(log->l_mp, "totally zeroed log");
595 }
596
597 return 0;
598 } else if (error) {
599 xfs_warn(log->l_mp, "empty log check failed");
600 return error;
601 }
602
603 first_blk = 0;
604 bp = xlog_get_bp(log, 1);
605 if (!bp)
606 return ENOMEM;
607
608 error = xlog_bread(log, 0, 1, bp, &offset);
609 if (error)
610 goto bp_err;
611
612 first_half_cycle = xlog_get_cycle(offset);
613
614 last_blk = head_blk = log_bbnum - 1;
615 error = xlog_bread(log, last_blk, 1, bp, &offset);
616 if (error)
617 goto bp_err;
618
619 last_half_cycle = xlog_get_cycle(offset);
620 ASSERT(last_half_cycle != 0);
621
622
623
624
625
626
627
628
629
630
631
632
633 if (first_half_cycle == last_half_cycle) {
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659 head_blk = log_bbnum;
660 stop_on_cycle = last_half_cycle - 1;
661 } else {
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684 stop_on_cycle = last_half_cycle;
685 if ((error = xlog_find_cycle_start(log, bp, first_blk,
686 &head_blk, last_half_cycle)))
687 goto bp_err;
688 }
689
690
691
692
693
694
695
696
697 num_scan_bblks = XLOG_TOTAL_REC_SHIFT(log);
698 if (head_blk >= num_scan_bblks) {
699
700
701
702
703 start_blk = head_blk - num_scan_bblks;
704 if ((error = xlog_find_verify_cycle(log,
705 start_blk, num_scan_bblks,
706 stop_on_cycle, &new_blk)))
707 goto bp_err;
708 if (new_blk != -1)
709 head_blk = new_blk;
710 } else {
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738 ASSERT(head_blk <= INT_MAX &&
739 (xfs_daddr_t) num_scan_bblks >= head_blk);
740 start_blk = log_bbnum - (num_scan_bblks - head_blk);
741 if ((error = xlog_find_verify_cycle(log, start_blk,
742 num_scan_bblks - (int)head_blk,
743 (stop_on_cycle - 1), &new_blk)))
744 goto bp_err;
745 if (new_blk != -1) {
746 head_blk = new_blk;
747 goto validate_head;
748 }
749
750
751
752
753
754
755 start_blk = 0;
756 ASSERT(head_blk <= INT_MAX);
757 if ((error = xlog_find_verify_cycle(log,
758 start_blk, (int)head_blk,
759 stop_on_cycle, &new_blk)))
760 goto bp_err;
761 if (new_blk != -1)
762 head_blk = new_blk;
763 }
764
765validate_head:
766
767
768
769
770 num_scan_bblks = XLOG_REC_SHIFT(log);
771 if (head_blk >= num_scan_bblks) {
772 start_blk = head_blk - num_scan_bblks;
773
774
775 if ((error = xlog_find_verify_log_record(log, start_blk,
776 &head_blk, 0)) == -1) {
777 error = XFS_ERROR(EIO);
778 goto bp_err;
779 } else if (error)
780 goto bp_err;
781 } else {
782 start_blk = 0;
783 ASSERT(head_blk <= INT_MAX);
784 if ((error = xlog_find_verify_log_record(log, start_blk,
785 &head_blk, 0)) == -1) {
786
787 start_blk = log_bbnum - (num_scan_bblks - head_blk);
788 new_blk = log_bbnum;
789 ASSERT(start_blk <= INT_MAX &&
790 (xfs_daddr_t) log_bbnum-start_blk >= 0);
791 ASSERT(head_blk <= INT_MAX);
792 if ((error = xlog_find_verify_log_record(log,
793 start_blk, &new_blk,
794 (int)head_blk)) == -1) {
795 error = XFS_ERROR(EIO);
796 goto bp_err;
797 } else if (error)
798 goto bp_err;
799 if (new_blk != log_bbnum)
800 head_blk = new_blk;
801 } else if (error)
802 goto bp_err;
803 }
804
805 xlog_put_bp(bp);
806 if (head_blk == log_bbnum)
807 *return_head_blk = 0;
808 else
809 *return_head_blk = head_blk;
810
811
812
813
814
815
816 return 0;
817
818 bp_err:
819 xlog_put_bp(bp);
820
821 if (error)
822 xfs_warn(log->l_mp, "failed to find log head");
823 return error;
824}
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842STATIC int
843xlog_find_tail(
844 xlog_t *log,
845 xfs_daddr_t *head_blk,
846 xfs_daddr_t *tail_blk)
847{
848 xlog_rec_header_t *rhead;
849 xlog_op_header_t *op_head;
850 xfs_caddr_t offset = NULL;
851 xfs_buf_t *bp;
852 int error, i, found;
853 xfs_daddr_t umount_data_blk;
854 xfs_daddr_t after_umount_blk;
855 xfs_lsn_t tail_lsn;
856 int hblks;
857
858 found = 0;
859
860
861
862
863 if ((error = xlog_find_head(log, head_blk)))
864 return error;
865
866 bp = xlog_get_bp(log, 1);
867 if (!bp)
868 return ENOMEM;
869 if (*head_blk == 0) {
870 error = xlog_bread(log, 0, 1, bp, &offset);
871 if (error)
872 goto done;
873
874 if (xlog_get_cycle(offset) == 0) {
875 *tail_blk = 0;
876
877 goto done;
878 }
879 }
880
881
882
883
884 ASSERT(*head_blk < INT_MAX);
885 for (i = (int)(*head_blk) - 1; i >= 0; i--) {
886 error = xlog_bread(log, i, 1, bp, &offset);
887 if (error)
888 goto done;
889
890 if (XLOG_HEADER_MAGIC_NUM == be32_to_cpu(*(__be32 *)offset)) {
891 found = 1;
892 break;
893 }
894 }
895
896
897
898
899
900
901 if (!found) {
902 for (i = log->l_logBBsize - 1; i >= (int)(*head_blk); i--) {
903 error = xlog_bread(log, i, 1, bp, &offset);
904 if (error)
905 goto done;
906
907 if (XLOG_HEADER_MAGIC_NUM ==
908 be32_to_cpu(*(__be32 *)offset)) {
909 found = 2;
910 break;
911 }
912 }
913 }
914 if (!found) {
915 xfs_warn(log->l_mp, "%s: couldn't find sync record", __func__);
916 ASSERT(0);
917 return XFS_ERROR(EIO);
918 }
919
920
921 rhead = (xlog_rec_header_t *)offset;
922 *tail_blk = BLOCK_LSN(be64_to_cpu(rhead->h_tail_lsn));
923
924
925
926
927
928
929
930
931
932
933
934 log->l_prev_block = i;
935 log->l_curr_block = (int)*head_blk;
936 log->l_curr_cycle = be32_to_cpu(rhead->h_cycle);
937 if (found == 2)
938 log->l_curr_cycle++;
939 atomic64_set(&log->l_tail_lsn, be64_to_cpu(rhead->h_tail_lsn));
940 atomic64_set(&log->l_last_sync_lsn, be64_to_cpu(rhead->h_lsn));
941 xlog_assign_grant_head(&log->l_grant_reserve_head, log->l_curr_cycle,
942 BBTOB(log->l_curr_block));
943 xlog_assign_grant_head(&log->l_grant_write_head, log->l_curr_cycle,
944 BBTOB(log->l_curr_block));
945
946
947
948
949
950
951
952
953
954
955
956
957 if (xfs_sb_version_haslogv2(&log->l_mp->m_sb)) {
958 int h_size = be32_to_cpu(rhead->h_size);
959 int h_version = be32_to_cpu(rhead->h_version);
960
961 if ((h_version & XLOG_VERSION_2) &&
962 (h_size > XLOG_HEADER_CYCLE_SIZE)) {
963 hblks = h_size / XLOG_HEADER_CYCLE_SIZE;
964 if (h_size % XLOG_HEADER_CYCLE_SIZE)
965 hblks++;
966 } else {
967 hblks = 1;
968 }
969 } else {
970 hblks = 1;
971 }
972 after_umount_blk = (i + hblks + (int)
973 BTOBB(be32_to_cpu(rhead->h_len))) % log->l_logBBsize;
974 tail_lsn = atomic64_read(&log->l_tail_lsn);
975 if (*head_blk == after_umount_blk &&
976 be32_to_cpu(rhead->h_num_logops) == 1) {
977 umount_data_blk = (i + hblks) % log->l_logBBsize;
978 error = xlog_bread(log, umount_data_blk, 1, bp, &offset);
979 if (error)
980 goto done;
981
982 op_head = (xlog_op_header_t *)offset;
983 if (op_head->oh_flags & XLOG_UNMOUNT_TRANS) {
984
985
986
987
988
989 xlog_assign_atomic_lsn(&log->l_tail_lsn,
990 log->l_curr_cycle, after_umount_blk);
991 xlog_assign_atomic_lsn(&log->l_last_sync_lsn,
992 log->l_curr_cycle, after_umount_blk);
993 *tail_blk = after_umount_blk;
994
995
996
997
998
999
1000
1001 log->l_mp->m_flags |= XFS_MOUNT_WAS_CLEAN;
1002 }
1003 }
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024 if (!xfs_readonly_buftarg(log->l_mp->m_logdev_targp))
1025 error = xlog_clear_stale_blocks(log, tail_lsn);
1026
1027done:
1028 xlog_put_bp(bp);
1029
1030 if (error)
1031 xfs_warn(log->l_mp, "failed to locate log tail");
1032 return error;
1033}
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051STATIC int
1052xlog_find_zeroed(
1053 xlog_t *log,
1054 xfs_daddr_t *blk_no)
1055{
1056 xfs_buf_t *bp;
1057 xfs_caddr_t offset;
1058 uint first_cycle, last_cycle;
1059 xfs_daddr_t new_blk, last_blk, start_blk;
1060 xfs_daddr_t num_scan_bblks;
1061 int error, log_bbnum = log->l_logBBsize;
1062
1063 *blk_no = 0;
1064
1065
1066 bp = xlog_get_bp(log, 1);
1067 if (!bp)
1068 return ENOMEM;
1069 error = xlog_bread(log, 0, 1, bp, &offset);
1070 if (error)
1071 goto bp_err;
1072
1073 first_cycle = xlog_get_cycle(offset);
1074 if (first_cycle == 0) {
1075 *blk_no = 0;
1076 xlog_put_bp(bp);
1077 return -1;
1078 }
1079
1080
1081 error = xlog_bread(log, log_bbnum-1, 1, bp, &offset);
1082 if (error)
1083 goto bp_err;
1084
1085 last_cycle = xlog_get_cycle(offset);
1086 if (last_cycle != 0) {
1087 xlog_put_bp(bp);
1088 return 0;
1089 } else if (first_cycle != 1) {
1090
1091
1092
1093
1094
1095 xfs_warn(log->l_mp,
1096 "Log inconsistent or not a log (last==0, first!=1)");
1097 return XFS_ERROR(EINVAL);
1098 }
1099
1100
1101 last_blk = log_bbnum-1;
1102 if ((error = xlog_find_cycle_start(log, bp, 0, &last_blk, 0)))
1103 goto bp_err;
1104
1105
1106
1107
1108
1109
1110
1111 num_scan_bblks = XLOG_TOTAL_REC_SHIFT(log);
1112 ASSERT(num_scan_bblks <= INT_MAX);
1113
1114 if (last_blk < num_scan_bblks)
1115 num_scan_bblks = last_blk;
1116 start_blk = last_blk - num_scan_bblks;
1117
1118
1119
1120
1121
1122
1123
1124 if ((error = xlog_find_verify_cycle(log, start_blk,
1125 (int)num_scan_bblks, 0, &new_blk)))
1126 goto bp_err;
1127 if (new_blk != -1)
1128 last_blk = new_blk;
1129
1130
1131
1132
1133
1134 if ((error = xlog_find_verify_log_record(log, start_blk,
1135 &last_blk, 0)) == -1) {
1136 error = XFS_ERROR(EIO);
1137 goto bp_err;
1138 } else if (error)
1139 goto bp_err;
1140
1141 *blk_no = last_blk;
1142bp_err:
1143 xlog_put_bp(bp);
1144 if (error)
1145 return error;
1146 return -1;
1147}
1148
1149
1150
1151
1152
1153
1154STATIC void
1155xlog_add_record(
1156 xlog_t *log,
1157 xfs_caddr_t buf,
1158 int cycle,
1159 int block,
1160 int tail_cycle,
1161 int tail_block)
1162{
1163 xlog_rec_header_t *recp = (xlog_rec_header_t *)buf;
1164
1165 memset(buf, 0, BBSIZE);
1166 recp->h_magicno = cpu_to_be32(XLOG_HEADER_MAGIC_NUM);
1167 recp->h_cycle = cpu_to_be32(cycle);
1168 recp->h_version = cpu_to_be32(
1169 xfs_sb_version_haslogv2(&log->l_mp->m_sb) ? 2 : 1);
1170 recp->h_lsn = cpu_to_be64(xlog_assign_lsn(cycle, block));
1171 recp->h_tail_lsn = cpu_to_be64(xlog_assign_lsn(tail_cycle, tail_block));
1172 recp->h_fmt = cpu_to_be32(XLOG_FMT);
1173 memcpy(&recp->h_fs_uuid, &log->l_mp->m_sb.sb_uuid, sizeof(uuid_t));
1174}
1175
1176STATIC int
1177xlog_write_log_records(
1178 xlog_t *log,
1179 int cycle,
1180 int start_block,
1181 int blocks,
1182 int tail_cycle,
1183 int tail_block)
1184{
1185 xfs_caddr_t offset;
1186 xfs_buf_t *bp;
1187 int balign, ealign;
1188 int sectbb = log->l_sectBBsize;
1189 int end_block = start_block + blocks;
1190 int bufblks;
1191 int error = 0;
1192 int i, j = 0;
1193
1194
1195
1196
1197
1198
1199
1200 bufblks = 1 << ffs(blocks);
1201 while (!(bp = xlog_get_bp(log, bufblks))) {
1202 bufblks >>= 1;
1203 if (bufblks < sectbb)
1204 return ENOMEM;
1205 }
1206
1207
1208
1209
1210
1211 balign = round_down(start_block, sectbb);
1212 if (balign != start_block) {
1213 error = xlog_bread_noalign(log, start_block, 1, bp);
1214 if (error)
1215 goto out_put_bp;
1216
1217 j = start_block - balign;
1218 }
1219
1220 for (i = start_block; i < end_block; i += bufblks) {
1221 int bcount, endcount;
1222
1223 bcount = min(bufblks, end_block - start_block);
1224 endcount = bcount - j;
1225
1226
1227
1228
1229
1230 ealign = round_down(end_block, sectbb);
1231 if (j == 0 && (start_block + endcount > ealign)) {
1232 offset = XFS_BUF_PTR(bp);
1233 balign = BBTOB(ealign - start_block);
1234 error = XFS_BUF_SET_PTR(bp, offset + balign,
1235 BBTOB(sectbb));
1236 if (error)
1237 break;
1238
1239 error = xlog_bread_noalign(log, ealign, sectbb, bp);
1240 if (error)
1241 break;
1242
1243 error = XFS_BUF_SET_PTR(bp, offset, bufblks);
1244 if (error)
1245 break;
1246 }
1247
1248 offset = xlog_align(log, start_block, endcount, bp);
1249 for (; j < endcount; j++) {
1250 xlog_add_record(log, offset, cycle, i+j,
1251 tail_cycle, tail_block);
1252 offset += BBSIZE;
1253 }
1254 error = xlog_bwrite(log, start_block, endcount, bp);
1255 if (error)
1256 break;
1257 start_block += endcount;
1258 j = 0;
1259 }
1260
1261 out_put_bp:
1262 xlog_put_bp(bp);
1263 return error;
1264}
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282STATIC int
1283xlog_clear_stale_blocks(
1284 xlog_t *log,
1285 xfs_lsn_t tail_lsn)
1286{
1287 int tail_cycle, head_cycle;
1288 int tail_block, head_block;
1289 int tail_distance, max_distance;
1290 int distance;
1291 int error;
1292
1293 tail_cycle = CYCLE_LSN(tail_lsn);
1294 tail_block = BLOCK_LSN(tail_lsn);
1295 head_cycle = log->l_curr_cycle;
1296 head_block = log->l_curr_block;
1297
1298
1299
1300
1301
1302
1303
1304 if (head_cycle == tail_cycle) {
1305
1306
1307
1308
1309
1310
1311
1312 if (unlikely(head_block < tail_block || head_block >= log->l_logBBsize)) {
1313 XFS_ERROR_REPORT("xlog_clear_stale_blocks(1)",
1314 XFS_ERRLEVEL_LOW, log->l_mp);
1315 return XFS_ERROR(EFSCORRUPTED);
1316 }
1317 tail_distance = tail_block + (log->l_logBBsize - head_block);
1318 } else {
1319
1320
1321
1322
1323
1324 if (unlikely(head_block >= tail_block || head_cycle != (tail_cycle + 1))){
1325 XFS_ERROR_REPORT("xlog_clear_stale_blocks(2)",
1326 XFS_ERRLEVEL_LOW, log->l_mp);
1327 return XFS_ERROR(EFSCORRUPTED);
1328 }
1329 tail_distance = tail_block - head_block;
1330 }
1331
1332
1333
1334
1335
1336 if (tail_distance <= 0) {
1337 ASSERT(tail_distance == 0);
1338 return 0;
1339 }
1340
1341 max_distance = XLOG_TOTAL_REC_SHIFT(log);
1342
1343
1344
1345
1346
1347
1348
1349 max_distance = MIN(max_distance, tail_distance);
1350
1351 if ((head_block + max_distance) <= log->l_logBBsize) {
1352
1353
1354
1355
1356
1357
1358
1359 error = xlog_write_log_records(log, (head_cycle - 1),
1360 head_block, max_distance, tail_cycle,
1361 tail_block);
1362 if (error)
1363 return error;
1364 } else {
1365
1366
1367
1368
1369
1370
1371
1372 distance = log->l_logBBsize - head_block;
1373 error = xlog_write_log_records(log, (head_cycle - 1),
1374 head_block, distance, tail_cycle,
1375 tail_block);
1376
1377 if (error)
1378 return error;
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388 distance = max_distance - (log->l_logBBsize - head_block);
1389 error = xlog_write_log_records(log, head_cycle, 0, distance,
1390 tail_cycle, tail_block);
1391 if (error)
1392 return error;
1393 }
1394
1395 return 0;
1396}
1397
1398
1399
1400
1401
1402
1403
1404
1405STATIC xlog_recover_t *
1406xlog_recover_find_tid(
1407 struct hlist_head *head,
1408 xlog_tid_t tid)
1409{
1410 xlog_recover_t *trans;
1411 struct hlist_node *n;
1412
1413 hlist_for_each_entry(trans, n, head, r_list) {
1414 if (trans->r_log_tid == tid)
1415 return trans;
1416 }
1417 return NULL;
1418}
1419
1420STATIC void
1421xlog_recover_new_tid(
1422 struct hlist_head *head,
1423 xlog_tid_t tid,
1424 xfs_lsn_t lsn)
1425{
1426 xlog_recover_t *trans;
1427
1428 trans = kmem_zalloc(sizeof(xlog_recover_t), KM_SLEEP);
1429 trans->r_log_tid = tid;
1430 trans->r_lsn = lsn;
1431 INIT_LIST_HEAD(&trans->r_itemq);
1432
1433 INIT_HLIST_NODE(&trans->r_list);
1434 hlist_add_head(&trans->r_list, head);
1435}
1436
1437STATIC void
1438xlog_recover_add_item(
1439 struct list_head *head)
1440{
1441 xlog_recover_item_t *item;
1442
1443 item = kmem_zalloc(sizeof(xlog_recover_item_t), KM_SLEEP);
1444 INIT_LIST_HEAD(&item->ri_list);
1445 list_add_tail(&item->ri_list, head);
1446}
1447
1448STATIC int
1449xlog_recover_add_to_cont_trans(
1450 struct log *log,
1451 xlog_recover_t *trans,
1452 xfs_caddr_t dp,
1453 int len)
1454{
1455 xlog_recover_item_t *item;
1456 xfs_caddr_t ptr, old_ptr;
1457 int old_len;
1458
1459 if (list_empty(&trans->r_itemq)) {
1460
1461 xlog_recover_add_item(&trans->r_itemq);
1462 ptr = (xfs_caddr_t) &trans->r_theader +
1463 sizeof(xfs_trans_header_t) - len;
1464 memcpy(ptr, dp, len);
1465 return 0;
1466 }
1467
1468 item = list_entry(trans->r_itemq.prev, xlog_recover_item_t, ri_list);
1469
1470 old_ptr = item->ri_buf[item->ri_cnt-1].i_addr;
1471 old_len = item->ri_buf[item->ri_cnt-1].i_len;
1472
1473 ptr = kmem_realloc(old_ptr, len+old_len, old_len, 0u);
1474 memcpy(&ptr[old_len], dp, len);
1475 item->ri_buf[item->ri_cnt-1].i_len += len;
1476 item->ri_buf[item->ri_cnt-1].i_addr = ptr;
1477 trace_xfs_log_recover_item_add_cont(log, trans, item, 0);
1478 return 0;
1479}
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494STATIC int
1495xlog_recover_add_to_trans(
1496 struct log *log,
1497 xlog_recover_t *trans,
1498 xfs_caddr_t dp,
1499 int len)
1500{
1501 xfs_inode_log_format_t *in_f;
1502 xlog_recover_item_t *item;
1503 xfs_caddr_t ptr;
1504
1505 if (!len)
1506 return 0;
1507 if (list_empty(&trans->r_itemq)) {
1508
1509 if (*(uint *)dp != XFS_TRANS_HEADER_MAGIC) {
1510 xfs_warn(log->l_mp, "%s: bad header magic number",
1511 __func__);
1512 ASSERT(0);
1513 return XFS_ERROR(EIO);
1514 }
1515 if (len == sizeof(xfs_trans_header_t))
1516 xlog_recover_add_item(&trans->r_itemq);
1517 memcpy(&trans->r_theader, dp, len);
1518 return 0;
1519 }
1520
1521 ptr = kmem_alloc(len, KM_SLEEP);
1522 memcpy(ptr, dp, len);
1523 in_f = (xfs_inode_log_format_t *)ptr;
1524
1525
1526 item = list_entry(trans->r_itemq.prev, xlog_recover_item_t, ri_list);
1527 if (item->ri_total != 0 &&
1528 item->ri_total == item->ri_cnt) {
1529
1530 xlog_recover_add_item(&trans->r_itemq);
1531 item = list_entry(trans->r_itemq.prev,
1532 xlog_recover_item_t, ri_list);
1533 }
1534
1535 if (item->ri_total == 0) {
1536 if (in_f->ilf_size == 0 ||
1537 in_f->ilf_size > XLOG_MAX_REGIONS_IN_ITEM) {
1538 xfs_warn(log->l_mp,
1539 "bad number of regions (%d) in inode log format",
1540 in_f->ilf_size);
1541 ASSERT(0);
1542 return XFS_ERROR(EIO);
1543 }
1544
1545 item->ri_total = in_f->ilf_size;
1546 item->ri_buf =
1547 kmem_zalloc(item->ri_total * sizeof(xfs_log_iovec_t),
1548 KM_SLEEP);
1549 }
1550 ASSERT(item->ri_total > item->ri_cnt);
1551
1552 item->ri_buf[item->ri_cnt].i_addr = ptr;
1553 item->ri_buf[item->ri_cnt].i_len = len;
1554 item->ri_cnt++;
1555 trace_xfs_log_recover_item_add(log, trans, item, 0);
1556 return 0;
1557}
1558
1559
1560
1561
1562
1563
1564
1565STATIC int
1566xlog_recover_reorder_trans(
1567 struct log *log,
1568 xlog_recover_t *trans,
1569 int pass)
1570{
1571 xlog_recover_item_t *item, *n;
1572 LIST_HEAD(sort_list);
1573
1574 list_splice_init(&trans->r_itemq, &sort_list);
1575 list_for_each_entry_safe(item, n, &sort_list, ri_list) {
1576 xfs_buf_log_format_t *buf_f = item->ri_buf[0].i_addr;
1577
1578 switch (ITEM_TYPE(item)) {
1579 case XFS_LI_BUF:
1580 if (!(buf_f->blf_flags & XFS_BLF_CANCEL)) {
1581 trace_xfs_log_recover_item_reorder_head(log,
1582 trans, item, pass);
1583 list_move(&item->ri_list, &trans->r_itemq);
1584 break;
1585 }
1586 case XFS_LI_INODE:
1587 case XFS_LI_DQUOT:
1588 case XFS_LI_QUOTAOFF:
1589 case XFS_LI_EFD:
1590 case XFS_LI_EFI:
1591 trace_xfs_log_recover_item_reorder_tail(log,
1592 trans, item, pass);
1593 list_move_tail(&item->ri_list, &trans->r_itemq);
1594 break;
1595 default:
1596 xfs_warn(log->l_mp,
1597 "%s: unrecognized type of log operation",
1598 __func__);
1599 ASSERT(0);
1600 return XFS_ERROR(EIO);
1601 }
1602 }
1603 ASSERT(list_empty(&sort_list));
1604 return 0;
1605}
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619STATIC int
1620xlog_recover_buffer_pass1(
1621 struct log *log,
1622 xlog_recover_item_t *item)
1623{
1624 xfs_buf_log_format_t *buf_f = item->ri_buf[0].i_addr;
1625 struct list_head *bucket;
1626 struct xfs_buf_cancel *bcp;
1627
1628
1629
1630
1631 if (!(buf_f->blf_flags & XFS_BLF_CANCEL)) {
1632 trace_xfs_log_recover_buf_not_cancel(log, buf_f);
1633 return 0;
1634 }
1635
1636
1637
1638
1639
1640 bucket = XLOG_BUF_CANCEL_BUCKET(log, buf_f->blf_blkno);
1641 list_for_each_entry(bcp, bucket, bc_list) {
1642 if (bcp->bc_blkno == buf_f->blf_blkno &&
1643 bcp->bc_len == buf_f->blf_len) {
1644 bcp->bc_refcount++;
1645 trace_xfs_log_recover_buf_cancel_ref_inc(log, buf_f);
1646 return 0;
1647 }
1648 }
1649
1650 bcp = kmem_alloc(sizeof(struct xfs_buf_cancel), KM_SLEEP);
1651 bcp->bc_blkno = buf_f->blf_blkno;
1652 bcp->bc_len = buf_f->blf_len;
1653 bcp->bc_refcount = 1;
1654 list_add_tail(&bcp->bc_list, bucket);
1655
1656 trace_xfs_log_recover_buf_cancel_add(log, buf_f);
1657 return 0;
1658}
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673STATIC int
1674xlog_check_buffer_cancelled(
1675 struct log *log,
1676 xfs_daddr_t blkno,
1677 uint len,
1678 ushort flags)
1679{
1680 struct list_head *bucket;
1681 struct xfs_buf_cancel *bcp;
1682
1683 if (log->l_buf_cancel_table == NULL) {
1684
1685
1686
1687
1688 ASSERT(!(flags & XFS_BLF_CANCEL));
1689 return 0;
1690 }
1691
1692
1693
1694
1695 bucket = XLOG_BUF_CANCEL_BUCKET(log, blkno);
1696 list_for_each_entry(bcp, bucket, bc_list) {
1697 if (bcp->bc_blkno == blkno && bcp->bc_len == len)
1698 goto found;
1699 }
1700
1701
1702
1703
1704
1705 ASSERT(!(flags & XFS_BLF_CANCEL));
1706 return 0;
1707
1708found:
1709
1710
1711
1712
1713
1714
1715 if (flags & XFS_BLF_CANCEL) {
1716 if (--bcp->bc_refcount == 0) {
1717 list_del(&bcp->bc_list);
1718 kmem_free(bcp);
1719 }
1720 }
1721 return 1;
1722}
1723
1724
1725
1726
1727
1728
1729
1730
1731
1732
1733
1734
1735
1736STATIC int
1737xlog_recover_do_inode_buffer(
1738 struct xfs_mount *mp,
1739 xlog_recover_item_t *item,
1740 struct xfs_buf *bp,
1741 xfs_buf_log_format_t *buf_f)
1742{
1743 int i;
1744 int item_index = 0;
1745 int bit = 0;
1746 int nbits = 0;
1747 int reg_buf_offset = 0;
1748 int reg_buf_bytes = 0;
1749 int next_unlinked_offset;
1750 int inodes_per_buf;
1751 xfs_agino_t *logged_nextp;
1752 xfs_agino_t *buffer_nextp;
1753
1754 trace_xfs_log_recover_buf_inode_buf(mp->m_log, buf_f);
1755
1756 inodes_per_buf = XFS_BUF_COUNT(bp) >> mp->m_sb.sb_inodelog;
1757 for (i = 0; i < inodes_per_buf; i++) {
1758 next_unlinked_offset = (i * mp->m_sb.sb_inodesize) +
1759 offsetof(xfs_dinode_t, di_next_unlinked);
1760
1761 while (next_unlinked_offset >=
1762 (reg_buf_offset + reg_buf_bytes)) {
1763
1764
1765
1766
1767
1768
1769 bit += nbits;
1770 bit = xfs_next_bit(buf_f->blf_data_map,
1771 buf_f->blf_map_size, bit);
1772
1773
1774
1775
1776
1777 if (bit == -1)
1778 return 0;
1779
1780 nbits = xfs_contig_bits(buf_f->blf_data_map,
1781 buf_f->blf_map_size, bit);
1782 ASSERT(nbits > 0);
1783 reg_buf_offset = bit << XFS_BLF_SHIFT;
1784 reg_buf_bytes = nbits << XFS_BLF_SHIFT;
1785 item_index++;
1786 }
1787
1788
1789
1790
1791
1792
1793 if (next_unlinked_offset < reg_buf_offset)
1794 continue;
1795
1796 ASSERT(item->ri_buf[item_index].i_addr != NULL);
1797 ASSERT((item->ri_buf[item_index].i_len % XFS_BLF_CHUNK) == 0);
1798 ASSERT((reg_buf_offset + reg_buf_bytes) <= XFS_BUF_COUNT(bp));
1799
1800
1801
1802
1803
1804
1805 logged_nextp = item->ri_buf[item_index].i_addr +
1806 next_unlinked_offset - reg_buf_offset;
1807 if (unlikely(*logged_nextp == 0)) {
1808 xfs_alert(mp,
1809 "Bad inode buffer log record (ptr = 0x%p, bp = 0x%p). "
1810 "Trying to replay bad (0) inode di_next_unlinked field.",
1811 item, bp);
1812 XFS_ERROR_REPORT("xlog_recover_do_inode_buf",
1813 XFS_ERRLEVEL_LOW, mp);
1814 return XFS_ERROR(EFSCORRUPTED);
1815 }
1816
1817 buffer_nextp = (xfs_agino_t *)xfs_buf_offset(bp,
1818 next_unlinked_offset);
1819 *buffer_nextp = *logged_nextp;
1820 }
1821
1822 return 0;
1823}
1824
1825
1826
1827
1828
1829
1830
1831STATIC void
1832xlog_recover_do_reg_buffer(
1833 struct xfs_mount *mp,
1834 xlog_recover_item_t *item,
1835 struct xfs_buf *bp,
1836 xfs_buf_log_format_t *buf_f)
1837{
1838 int i;
1839 int bit;
1840 int nbits;
1841 int error;
1842
1843 trace_xfs_log_recover_buf_reg_buf(mp->m_log, buf_f);
1844
1845 bit = 0;
1846 i = 1;
1847 while (1) {
1848 bit = xfs_next_bit(buf_f->blf_data_map,
1849 buf_f->blf_map_size, bit);
1850 if (bit == -1)
1851 break;
1852 nbits = xfs_contig_bits(buf_f->blf_data_map,
1853 buf_f->blf_map_size, bit);
1854 ASSERT(nbits > 0);
1855 ASSERT(item->ri_buf[i].i_addr != NULL);
1856 ASSERT(item->ri_buf[i].i_len % XFS_BLF_CHUNK == 0);
1857 ASSERT(XFS_BUF_COUNT(bp) >=
1858 ((uint)bit << XFS_BLF_SHIFT)+(nbits<<XFS_BLF_SHIFT));
1859
1860
1861
1862
1863
1864
1865 error = 0;
1866 if (buf_f->blf_flags &
1867 (XFS_BLF_UDQUOT_BUF|XFS_BLF_PDQUOT_BUF|XFS_BLF_GDQUOT_BUF)) {
1868 if (item->ri_buf[i].i_addr == NULL) {
1869 xfs_alert(mp,
1870 "XFS: NULL dquot in %s.", __func__);
1871 goto next;
1872 }
1873 if (item->ri_buf[i].i_len < sizeof(xfs_disk_dquot_t)) {
1874 xfs_alert(mp,
1875 "XFS: dquot too small (%d) in %s.",
1876 item->ri_buf[i].i_len, __func__);
1877 goto next;
1878 }
1879 error = xfs_qm_dqcheck(mp, item->ri_buf[i].i_addr,
1880 -1, 0, XFS_QMOPT_DOWARN,
1881 "dquot_buf_recover");
1882 if (error)
1883 goto next;
1884 }
1885
1886 memcpy(xfs_buf_offset(bp,
1887 (uint)bit << XFS_BLF_SHIFT),
1888 item->ri_buf[i].i_addr,
1889 nbits<<XFS_BLF_SHIFT);
1890 next:
1891 i++;
1892 bit += nbits;
1893 }
1894
1895
1896 ASSERT(i == item->ri_total);
1897}
1898
1899
1900
1901
1902int
1903xfs_qm_dqcheck(
1904 struct xfs_mount *mp,
1905 xfs_disk_dquot_t *ddq,
1906 xfs_dqid_t id,
1907 uint type,
1908 uint flags,
1909 char *str)
1910{
1911 xfs_dqblk_t *d = (xfs_dqblk_t *)ddq;
1912 int errs = 0;
1913
1914
1915
1916
1917
1918
1919
1920
1921
1922
1923
1924
1925
1926
1927
1928
1929 if (be16_to_cpu(ddq->d_magic) != XFS_DQUOT_MAGIC) {
1930 if (flags & XFS_QMOPT_DOWARN)
1931 xfs_alert(mp,
1932 "%s : XFS dquot ID 0x%x, magic 0x%x != 0x%x",
1933 str, id, be16_to_cpu(ddq->d_magic), XFS_DQUOT_MAGIC);
1934 errs++;
1935 }
1936 if (ddq->d_version != XFS_DQUOT_VERSION) {
1937 if (flags & XFS_QMOPT_DOWARN)
1938 xfs_alert(mp,
1939 "%s : XFS dquot ID 0x%x, version 0x%x != 0x%x",
1940 str, id, ddq->d_version, XFS_DQUOT_VERSION);
1941 errs++;
1942 }
1943
1944 if (ddq->d_flags != XFS_DQ_USER &&
1945 ddq->d_flags != XFS_DQ_PROJ &&
1946 ddq->d_flags != XFS_DQ_GROUP) {
1947 if (flags & XFS_QMOPT_DOWARN)
1948 xfs_alert(mp,
1949 "%s : XFS dquot ID 0x%x, unknown flags 0x%x",
1950 str, id, ddq->d_flags);
1951 errs++;
1952 }
1953
1954 if (id != -1 && id != be32_to_cpu(ddq->d_id)) {
1955 if (flags & XFS_QMOPT_DOWARN)
1956 xfs_alert(mp,
1957 "%s : ondisk-dquot 0x%p, ID mismatch: "
1958 "0x%x expected, found id 0x%x",
1959 str, ddq, id, be32_to_cpu(ddq->d_id));
1960 errs++;
1961 }
1962
1963 if (!errs && ddq->d_id) {
1964 if (ddq->d_blk_softlimit &&
1965 be64_to_cpu(ddq->d_bcount) >=
1966 be64_to_cpu(ddq->d_blk_softlimit)) {
1967 if (!ddq->d_btimer) {
1968 if (flags & XFS_QMOPT_DOWARN)
1969 xfs_alert(mp,
1970 "%s : Dquot ID 0x%x (0x%p) BLK TIMER NOT STARTED",
1971 str, (int)be32_to_cpu(ddq->d_id), ddq);
1972 errs++;
1973 }
1974 }
1975 if (ddq->d_ino_softlimit &&
1976 be64_to_cpu(ddq->d_icount) >=
1977 be64_to_cpu(ddq->d_ino_softlimit)) {
1978 if (!ddq->d_itimer) {
1979 if (flags & XFS_QMOPT_DOWARN)
1980 xfs_alert(mp,
1981 "%s : Dquot ID 0x%x (0x%p) INODE TIMER NOT STARTED",
1982 str, (int)be32_to_cpu(ddq->d_id), ddq);
1983 errs++;
1984 }
1985 }
1986 if (ddq->d_rtb_softlimit &&
1987 be64_to_cpu(ddq->d_rtbcount) >=
1988 be64_to_cpu(ddq->d_rtb_softlimit)) {
1989 if (!ddq->d_rtbtimer) {
1990 if (flags & XFS_QMOPT_DOWARN)
1991 xfs_alert(mp,
1992 "%s : Dquot ID 0x%x (0x%p) RTBLK TIMER NOT STARTED",
1993 str, (int)be32_to_cpu(ddq->d_id), ddq);
1994 errs++;
1995 }
1996 }
1997 }
1998
1999 if (!errs || !(flags & XFS_QMOPT_DQREPAIR))
2000 return errs;
2001
2002 if (flags & XFS_QMOPT_DOWARN)
2003 xfs_notice(mp, "Re-initializing dquot ID 0x%x", id);
2004
2005
2006
2007
2008 ASSERT(id != -1);
2009 ASSERT(flags & XFS_QMOPT_DQREPAIR);
2010 memset(d, 0, sizeof(xfs_dqblk_t));
2011
2012 d->dd_diskdq.d_magic = cpu_to_be16(XFS_DQUOT_MAGIC);
2013 d->dd_diskdq.d_version = XFS_DQUOT_VERSION;
2014 d->dd_diskdq.d_flags = type;
2015 d->dd_diskdq.d_id = cpu_to_be32(id);
2016
2017 return errs;
2018}
2019
2020
2021
2022
2023
2024
2025
2026STATIC void
2027xlog_recover_do_dquot_buffer(
2028 xfs_mount_t *mp,
2029 xlog_t *log,
2030 xlog_recover_item_t *item,
2031 xfs_buf_t *bp,
2032 xfs_buf_log_format_t *buf_f)
2033{
2034 uint type;
2035
2036 trace_xfs_log_recover_buf_dquot_buf(log, buf_f);
2037
2038
2039
2040
2041 if (mp->m_qflags == 0) {
2042 return;
2043 }
2044
2045 type = 0;
2046 if (buf_f->blf_flags & XFS_BLF_UDQUOT_BUF)
2047 type |= XFS_DQ_USER;
2048 if (buf_f->blf_flags & XFS_BLF_PDQUOT_BUF)
2049 type |= XFS_DQ_PROJ;
2050 if (buf_f->blf_flags & XFS_BLF_GDQUOT_BUF)
2051 type |= XFS_DQ_GROUP;
2052
2053
2054
2055 if (log->l_quotaoffs_flag & type)
2056 return;
2057
2058 xlog_recover_do_reg_buffer(mp, item, bp, buf_f);
2059}
2060
2061
2062
2063
2064
2065
2066
2067
2068
2069
2070
2071
2072
2073
2074
2075
2076
2077
2078
2079
2080
2081
2082
2083
2084STATIC int
2085xlog_recover_buffer_pass2(
2086 xlog_t *log,
2087 xlog_recover_item_t *item)
2088{
2089 xfs_buf_log_format_t *buf_f = item->ri_buf[0].i_addr;
2090 xfs_mount_t *mp = log->l_mp;
2091 xfs_buf_t *bp;
2092 int error;
2093 uint buf_flags;
2094
2095
2096
2097
2098
2099 if (xlog_check_buffer_cancelled(log, buf_f->blf_blkno,
2100 buf_f->blf_len, buf_f->blf_flags)) {
2101 trace_xfs_log_recover_buf_cancel(log, buf_f);
2102 return 0;
2103 }
2104
2105 trace_xfs_log_recover_buf_recover(log, buf_f);
2106
2107 buf_flags = XBF_LOCK;
2108 if (!(buf_f->blf_flags & XFS_BLF_INODE_BUF))
2109 buf_flags |= XBF_MAPPED;
2110
2111 bp = xfs_buf_read(mp->m_ddev_targp, buf_f->blf_blkno, buf_f->blf_len,
2112 buf_flags);
2113 if (XFS_BUF_ISERROR(bp)) {
2114 xfs_ioerror_alert("xlog_recover_do..(read#1)", mp,
2115 bp, buf_f->blf_blkno);
2116 error = XFS_BUF_GETERROR(bp);
2117 xfs_buf_relse(bp);
2118 return error;
2119 }
2120
2121 error = 0;
2122 if (buf_f->blf_flags & XFS_BLF_INODE_BUF) {
2123 error = xlog_recover_do_inode_buffer(mp, item, bp, buf_f);
2124 } else if (buf_f->blf_flags &
2125 (XFS_BLF_UDQUOT_BUF|XFS_BLF_PDQUOT_BUF|XFS_BLF_GDQUOT_BUF)) {
2126 xlog_recover_do_dquot_buffer(mp, log, item, bp, buf_f);
2127 } else {
2128 xlog_recover_do_reg_buffer(mp, item, bp, buf_f);
2129 }
2130 if (error)
2131 return XFS_ERROR(error);
2132
2133
2134
2135
2136
2137
2138
2139
2140
2141
2142
2143
2144
2145
2146
2147
2148 if (XFS_DINODE_MAGIC ==
2149 be16_to_cpu(*((__be16 *)xfs_buf_offset(bp, 0))) &&
2150 (XFS_BUF_COUNT(bp) != MAX(log->l_mp->m_sb.sb_blocksize,
2151 (__uint32_t)XFS_INODE_CLUSTER_SIZE(log->l_mp)))) {
2152 XFS_BUF_STALE(bp);
2153 error = xfs_bwrite(mp, bp);
2154 } else {
2155 ASSERT(bp->b_target->bt_mount == mp);
2156 XFS_BUF_SET_IODONE_FUNC(bp, xlog_recover_iodone);
2157 xfs_bdwrite(mp, bp);
2158 }
2159
2160 return (error);
2161}
2162
2163STATIC int
2164xlog_recover_inode_pass2(
2165 xlog_t *log,
2166 xlog_recover_item_t *item)
2167{
2168 xfs_inode_log_format_t *in_f;
2169 xfs_mount_t *mp = log->l_mp;
2170 xfs_buf_t *bp;
2171 xfs_dinode_t *dip;
2172 int len;
2173 xfs_caddr_t src;
2174 xfs_caddr_t dest;
2175 int error;
2176 int attr_index;
2177 uint fields;
2178 xfs_icdinode_t *dicp;
2179 int need_free = 0;
2180
2181 if (item->ri_buf[0].i_len == sizeof(xfs_inode_log_format_t)) {
2182 in_f = item->ri_buf[0].i_addr;
2183 } else {
2184 in_f = kmem_alloc(sizeof(xfs_inode_log_format_t), KM_SLEEP);
2185 need_free = 1;
2186 error = xfs_inode_item_format_convert(&item->ri_buf[0], in_f);
2187 if (error)
2188 goto error;
2189 }
2190
2191
2192
2193
2194
2195 if (xlog_check_buffer_cancelled(log, in_f->ilf_blkno,
2196 in_f->ilf_len, 0)) {
2197 error = 0;
2198 trace_xfs_log_recover_inode_cancel(log, in_f);
2199 goto error;
2200 }
2201 trace_xfs_log_recover_inode_recover(log, in_f);
2202
2203 bp = xfs_buf_read(mp->m_ddev_targp, in_f->ilf_blkno, in_f->ilf_len,
2204 XBF_LOCK);
2205 if (XFS_BUF_ISERROR(bp)) {
2206 xfs_ioerror_alert("xlog_recover_do..(read#2)", mp,
2207 bp, in_f->ilf_blkno);
2208 error = XFS_BUF_GETERROR(bp);
2209 xfs_buf_relse(bp);
2210 goto error;
2211 }
2212 error = 0;
2213 ASSERT(in_f->ilf_fields & XFS_ILOG_CORE);
2214 dip = (xfs_dinode_t *)xfs_buf_offset(bp, in_f->ilf_boffset);
2215
2216
2217
2218
2219
2220 if (unlikely(be16_to_cpu(dip->di_magic) != XFS_DINODE_MAGIC)) {
2221 xfs_buf_relse(bp);
2222 xfs_alert(mp,
2223 "%s: Bad inode magic number, dip = 0x%p, dino bp = 0x%p, ino = %Ld",
2224 __func__, dip, bp, in_f->ilf_ino);
2225 XFS_ERROR_REPORT("xlog_recover_inode_pass2(1)",
2226 XFS_ERRLEVEL_LOW, mp);
2227 error = EFSCORRUPTED;
2228 goto error;
2229 }
2230 dicp = item->ri_buf[1].i_addr;
2231 if (unlikely(dicp->di_magic != XFS_DINODE_MAGIC)) {
2232 xfs_buf_relse(bp);
2233 xfs_alert(mp,
2234 "%s: Bad inode log record, rec ptr 0x%p, ino %Ld",
2235 __func__, item, in_f->ilf_ino);
2236 XFS_ERROR_REPORT("xlog_recover_inode_pass2(2)",
2237 XFS_ERRLEVEL_LOW, mp);
2238 error = EFSCORRUPTED;
2239 goto error;
2240 }
2241
2242
2243 if (dicp->di_flushiter < be16_to_cpu(dip->di_flushiter)) {
2244
2245
2246
2247
2248 if (be16_to_cpu(dip->di_flushiter) == DI_MAX_FLUSH &&
2249 dicp->di_flushiter < (DI_MAX_FLUSH >> 1)) {
2250
2251 } else {
2252 xfs_buf_relse(bp);
2253 trace_xfs_log_recover_inode_skip(log, in_f);
2254 error = 0;
2255 goto error;
2256 }
2257 }
2258
2259 dicp->di_flushiter = 0;
2260
2261 if (unlikely((dicp->di_mode & S_IFMT) == S_IFREG)) {
2262 if ((dicp->di_format != XFS_DINODE_FMT_EXTENTS) &&
2263 (dicp->di_format != XFS_DINODE_FMT_BTREE)) {
2264 XFS_CORRUPTION_ERROR("xlog_recover_inode_pass2(3)",
2265 XFS_ERRLEVEL_LOW, mp, dicp);
2266 xfs_buf_relse(bp);
2267 xfs_alert(mp,
2268 "%s: Bad regular inode log record, rec ptr 0x%p, "
2269 "ino ptr = 0x%p, ino bp = 0x%p, ino %Ld",
2270 __func__, item, dip, bp, in_f->ilf_ino);
2271 error = EFSCORRUPTED;
2272 goto error;
2273 }
2274 } else if (unlikely((dicp->di_mode & S_IFMT) == S_IFDIR)) {
2275 if ((dicp->di_format != XFS_DINODE_FMT_EXTENTS) &&
2276 (dicp->di_format != XFS_DINODE_FMT_BTREE) &&
2277 (dicp->di_format != XFS_DINODE_FMT_LOCAL)) {
2278 XFS_CORRUPTION_ERROR("xlog_recover_inode_pass2(4)",
2279 XFS_ERRLEVEL_LOW, mp, dicp);
2280 xfs_buf_relse(bp);
2281 xfs_alert(mp,
2282 "%s: Bad dir inode log record, rec ptr 0x%p, "
2283 "ino ptr = 0x%p, ino bp = 0x%p, ino %Ld",
2284 __func__, item, dip, bp, in_f->ilf_ino);
2285 error = EFSCORRUPTED;
2286 goto error;
2287 }
2288 }
2289 if (unlikely(dicp->di_nextents + dicp->di_anextents > dicp->di_nblocks)){
2290 XFS_CORRUPTION_ERROR("xlog_recover_inode_pass2(5)",
2291 XFS_ERRLEVEL_LOW, mp, dicp);
2292 xfs_buf_relse(bp);
2293 xfs_alert(mp,
2294 "%s: Bad inode log record, rec ptr 0x%p, dino ptr 0x%p, "
2295 "dino bp 0x%p, ino %Ld, total extents = %d, nblocks = %Ld",
2296 __func__, item, dip, bp, in_f->ilf_ino,
2297 dicp->di_nextents + dicp->di_anextents,
2298 dicp->di_nblocks);
2299 error = EFSCORRUPTED;
2300 goto error;
2301 }
2302 if (unlikely(dicp->di_forkoff > mp->m_sb.sb_inodesize)) {
2303 XFS_CORRUPTION_ERROR("xlog_recover_inode_pass2(6)",
2304 XFS_ERRLEVEL_LOW, mp, dicp);
2305 xfs_buf_relse(bp);
2306 xfs_alert(mp,
2307 "%s: Bad inode log record, rec ptr 0x%p, dino ptr 0x%p, "
2308 "dino bp 0x%p, ino %Ld, forkoff 0x%x", __func__,
2309 item, dip, bp, in_f->ilf_ino, dicp->di_forkoff);
2310 error = EFSCORRUPTED;
2311 goto error;
2312 }
2313 if (unlikely(item->ri_buf[1].i_len > sizeof(struct xfs_icdinode))) {
2314 XFS_CORRUPTION_ERROR("xlog_recover_inode_pass2(7)",
2315 XFS_ERRLEVEL_LOW, mp, dicp);
2316 xfs_buf_relse(bp);
2317 xfs_alert(mp,
2318 "%s: Bad inode log record length %d, rec ptr 0x%p",
2319 __func__, item->ri_buf[1].i_len, item);
2320 error = EFSCORRUPTED;
2321 goto error;
2322 }
2323
2324
2325 xfs_dinode_to_disk(dip, item->ri_buf[1].i_addr);
2326
2327
2328 if (item->ri_buf[1].i_len > sizeof(struct xfs_icdinode)) {
2329 memcpy((xfs_caddr_t) dip + sizeof(struct xfs_icdinode),
2330 item->ri_buf[1].i_addr + sizeof(struct xfs_icdinode),
2331 item->ri_buf[1].i_len - sizeof(struct xfs_icdinode));
2332 }
2333
2334 fields = in_f->ilf_fields;
2335 switch (fields & (XFS_ILOG_DEV | XFS_ILOG_UUID)) {
2336 case XFS_ILOG_DEV:
2337 xfs_dinode_put_rdev(dip, in_f->ilf_u.ilfu_rdev);
2338 break;
2339 case XFS_ILOG_UUID:
2340 memcpy(XFS_DFORK_DPTR(dip),
2341 &in_f->ilf_u.ilfu_uuid,
2342 sizeof(uuid_t));
2343 break;
2344 }
2345
2346 if (in_f->ilf_size == 2)
2347 goto write_inode_buffer;
2348 len = item->ri_buf[2].i_len;
2349 src = item->ri_buf[2].i_addr;
2350 ASSERT(in_f->ilf_size <= 4);
2351 ASSERT((in_f->ilf_size == 3) || (fields & XFS_ILOG_AFORK));
2352 ASSERT(!(fields & XFS_ILOG_DFORK) ||
2353 (len == in_f->ilf_dsize));
2354
2355 switch (fields & XFS_ILOG_DFORK) {
2356 case XFS_ILOG_DDATA:
2357 case XFS_ILOG_DEXT:
2358 memcpy(XFS_DFORK_DPTR(dip), src, len);
2359 break;
2360
2361 case XFS_ILOG_DBROOT:
2362 xfs_bmbt_to_bmdr(mp, (struct xfs_btree_block *)src, len,
2363 (xfs_bmdr_block_t *)XFS_DFORK_DPTR(dip),
2364 XFS_DFORK_DSIZE(dip, mp));
2365 break;
2366
2367 default:
2368
2369
2370
2371 ASSERT((fields & XFS_ILOG_DFORK) == 0);
2372 break;
2373 }
2374
2375
2376
2377
2378
2379
2380 if (in_f->ilf_fields & XFS_ILOG_AFORK) {
2381 if (in_f->ilf_fields & XFS_ILOG_DFORK) {
2382 attr_index = 3;
2383 } else {
2384 attr_index = 2;
2385 }
2386 len = item->ri_buf[attr_index].i_len;
2387 src = item->ri_buf[attr_index].i_addr;
2388 ASSERT(len == in_f->ilf_asize);
2389
2390 switch (in_f->ilf_fields & XFS_ILOG_AFORK) {
2391 case XFS_ILOG_ADATA:
2392 case XFS_ILOG_AEXT:
2393 dest = XFS_DFORK_APTR(dip);
2394 ASSERT(len <= XFS_DFORK_ASIZE(dip, mp));
2395 memcpy(dest, src, len);
2396 break;
2397
2398 case XFS_ILOG_ABROOT:
2399 dest = XFS_DFORK_APTR(dip);
2400 xfs_bmbt_to_bmdr(mp, (struct xfs_btree_block *)src,
2401 len, (xfs_bmdr_block_t*)dest,
2402 XFS_DFORK_ASIZE(dip, mp));
2403 break;
2404
2405 default:
2406 xfs_warn(log->l_mp, "%s: Invalid flag", __func__);
2407 ASSERT(0);
2408 xfs_buf_relse(bp);
2409 error = EIO;
2410 goto error;
2411 }
2412 }
2413
2414write_inode_buffer:
2415 ASSERT(bp->b_target->bt_mount == mp);
2416 XFS_BUF_SET_IODONE_FUNC(bp, xlog_recover_iodone);
2417 xfs_bdwrite(mp, bp);
2418error:
2419 if (need_free)
2420 kmem_free(in_f);
2421 return XFS_ERROR(error);
2422}
2423
2424
2425
2426
2427
2428
2429STATIC int
2430xlog_recover_quotaoff_pass1(
2431 xlog_t *log,
2432 xlog_recover_item_t *item)
2433{
2434 xfs_qoff_logformat_t *qoff_f = item->ri_buf[0].i_addr;
2435 ASSERT(qoff_f);
2436
2437
2438
2439
2440
2441 if (qoff_f->qf_flags & XFS_UQUOTA_ACCT)
2442 log->l_quotaoffs_flag |= XFS_DQ_USER;
2443 if (qoff_f->qf_flags & XFS_PQUOTA_ACCT)
2444 log->l_quotaoffs_flag |= XFS_DQ_PROJ;
2445 if (qoff_f->qf_flags & XFS_GQUOTA_ACCT)
2446 log->l_quotaoffs_flag |= XFS_DQ_GROUP;
2447
2448 return (0);
2449}
2450
2451
2452
2453
2454STATIC int
2455xlog_recover_dquot_pass2(
2456 xlog_t *log,
2457 xlog_recover_item_t *item)
2458{
2459 xfs_mount_t *mp = log->l_mp;
2460 xfs_buf_t *bp;
2461 struct xfs_disk_dquot *ddq, *recddq;
2462 int error;
2463 xfs_dq_logformat_t *dq_f;
2464 uint type;
2465
2466
2467
2468
2469
2470 if (mp->m_qflags == 0)
2471 return (0);
2472
2473 recddq = item->ri_buf[1].i_addr;
2474 if (recddq == NULL) {
2475 xfs_alert(log->l_mp, "NULL dquot in %s.", __func__);
2476 return XFS_ERROR(EIO);
2477 }
2478 if (item->ri_buf[1].i_len < sizeof(xfs_disk_dquot_t)) {
2479 xfs_alert(log->l_mp, "dquot too small (%d) in %s.",
2480 item->ri_buf[1].i_len, __func__);
2481 return XFS_ERROR(EIO);
2482 }
2483
2484
2485
2486
2487 type = recddq->d_flags & (XFS_DQ_USER | XFS_DQ_PROJ | XFS_DQ_GROUP);
2488 ASSERT(type);
2489 if (log->l_quotaoffs_flag & type)
2490 return (0);
2491
2492
2493
2494
2495
2496
2497
2498
2499
2500
2501
2502 dq_f = item->ri_buf[0].i_addr;
2503 ASSERT(dq_f);
2504 error = xfs_qm_dqcheck(mp, recddq, dq_f->qlf_id, 0, XFS_QMOPT_DOWARN,
2505 "xlog_recover_dquot_pass2 (log copy)");
2506 if (error)
2507 return XFS_ERROR(EIO);
2508 ASSERT(dq_f->qlf_len == 1);
2509
2510 error = xfs_read_buf(mp, mp->m_ddev_targp,
2511 dq_f->qlf_blkno,
2512 XFS_FSB_TO_BB(mp, dq_f->qlf_len),
2513 0, &bp);
2514 if (error) {
2515 xfs_ioerror_alert("xlog_recover_do..(read#3)", mp,
2516 bp, dq_f->qlf_blkno);
2517 return error;
2518 }
2519 ASSERT(bp);
2520 ddq = (xfs_disk_dquot_t *)xfs_buf_offset(bp, dq_f->qlf_boffset);
2521
2522
2523
2524
2525
2526
2527 error = xfs_qm_dqcheck(mp, ddq, dq_f->qlf_id, 0, XFS_QMOPT_DOWARN,
2528 "xlog_recover_dquot_pass2");
2529 if (error) {
2530 xfs_buf_relse(bp);
2531 return XFS_ERROR(EIO);
2532 }
2533
2534 memcpy(ddq, recddq, item->ri_buf[1].i_len);
2535
2536 ASSERT(dq_f->qlf_size == 2);
2537 ASSERT(bp->b_target->bt_mount == mp);
2538 XFS_BUF_SET_IODONE_FUNC(bp, xlog_recover_iodone);
2539 xfs_bdwrite(mp, bp);
2540
2541 return (0);
2542}
2543
2544
2545
2546
2547
2548
2549
2550
2551STATIC int
2552xlog_recover_efi_pass2(
2553 xlog_t *log,
2554 xlog_recover_item_t *item,
2555 xfs_lsn_t lsn)
2556{
2557 int error;
2558 xfs_mount_t *mp = log->l_mp;
2559 xfs_efi_log_item_t *efip;
2560 xfs_efi_log_format_t *efi_formatp;
2561
2562 efi_formatp = item->ri_buf[0].i_addr;
2563
2564 efip = xfs_efi_init(mp, efi_formatp->efi_nextents);
2565 if ((error = xfs_efi_copy_format(&(item->ri_buf[0]),
2566 &(efip->efi_format)))) {
2567 xfs_efi_item_free(efip);
2568 return error;
2569 }
2570 atomic_set(&efip->efi_next_extent, efi_formatp->efi_nextents);
2571
2572 spin_lock(&log->l_ailp->xa_lock);
2573
2574
2575
2576 xfs_trans_ail_update(log->l_ailp, &efip->efi_item, lsn);
2577 return 0;
2578}
2579
2580
2581
2582
2583
2584
2585
2586
2587
2588
2589STATIC int
2590xlog_recover_efd_pass2(
2591 xlog_t *log,
2592 xlog_recover_item_t *item)
2593{
2594 xfs_efd_log_format_t *efd_formatp;
2595 xfs_efi_log_item_t *efip = NULL;
2596 xfs_log_item_t *lip;
2597 __uint64_t efi_id;
2598 struct xfs_ail_cursor cur;
2599 struct xfs_ail *ailp = log->l_ailp;
2600
2601 efd_formatp = item->ri_buf[0].i_addr;
2602 ASSERT((item->ri_buf[0].i_len == (sizeof(xfs_efd_log_format_32_t) +
2603 ((efd_formatp->efd_nextents - 1) * sizeof(xfs_extent_32_t)))) ||
2604 (item->ri_buf[0].i_len == (sizeof(xfs_efd_log_format_64_t) +
2605 ((efd_formatp->efd_nextents - 1) * sizeof(xfs_extent_64_t)))));
2606 efi_id = efd_formatp->efd_efi_id;
2607
2608
2609
2610
2611
2612 spin_lock(&ailp->xa_lock);
2613 lip = xfs_trans_ail_cursor_first(ailp, &cur, 0);
2614 while (lip != NULL) {
2615 if (lip->li_type == XFS_LI_EFI) {
2616 efip = (xfs_efi_log_item_t *)lip;
2617 if (efip->efi_format.efi_id == efi_id) {
2618
2619
2620
2621
2622 xfs_trans_ail_delete(ailp, lip);
2623 xfs_efi_item_free(efip);
2624 spin_lock(&ailp->xa_lock);
2625 break;
2626 }
2627 }
2628 lip = xfs_trans_ail_cursor_next(ailp, &cur);
2629 }
2630 xfs_trans_ail_cursor_done(ailp, &cur);
2631 spin_unlock(&ailp->xa_lock);
2632
2633 return 0;
2634}
2635
2636
2637
2638
2639
2640
2641STATIC void
2642xlog_recover_free_trans(
2643 struct xlog_recover *trans)
2644{
2645 xlog_recover_item_t *item, *n;
2646 int i;
2647
2648 list_for_each_entry_safe(item, n, &trans->r_itemq, ri_list) {
2649
2650 list_del(&item->ri_list);
2651 for (i = 0; i < item->ri_cnt; i++)
2652 kmem_free(item->ri_buf[i].i_addr);
2653
2654 kmem_free(item->ri_buf);
2655 kmem_free(item);
2656 }
2657
2658 kmem_free(trans);
2659}
2660
2661STATIC int
2662xlog_recover_commit_pass1(
2663 struct log *log,
2664 struct xlog_recover *trans,
2665 xlog_recover_item_t *item)
2666{
2667 trace_xfs_log_recover_item_recover(log, trans, item, XLOG_RECOVER_PASS1);
2668
2669 switch (ITEM_TYPE(item)) {
2670 case XFS_LI_BUF:
2671 return xlog_recover_buffer_pass1(log, item);
2672 case XFS_LI_QUOTAOFF:
2673 return xlog_recover_quotaoff_pass1(log, item);
2674 case XFS_LI_INODE:
2675 case XFS_LI_EFI:
2676 case XFS_LI_EFD:
2677 case XFS_LI_DQUOT:
2678
2679 return 0;
2680 default:
2681 xfs_warn(log->l_mp, "%s: invalid item type (%d)",
2682 __func__, ITEM_TYPE(item));
2683 ASSERT(0);
2684 return XFS_ERROR(EIO);
2685 }
2686}
2687
2688STATIC int
2689xlog_recover_commit_pass2(
2690 struct log *log,
2691 struct xlog_recover *trans,
2692 xlog_recover_item_t *item)
2693{
2694 trace_xfs_log_recover_item_recover(log, trans, item, XLOG_RECOVER_PASS2);
2695
2696 switch (ITEM_TYPE(item)) {
2697 case XFS_LI_BUF:
2698 return xlog_recover_buffer_pass2(log, item);
2699 case XFS_LI_INODE:
2700 return xlog_recover_inode_pass2(log, item);
2701 case XFS_LI_EFI:
2702 return xlog_recover_efi_pass2(log, item, trans->r_lsn);
2703 case XFS_LI_EFD:
2704 return xlog_recover_efd_pass2(log, item);
2705 case XFS_LI_DQUOT:
2706 return xlog_recover_dquot_pass2(log, item);
2707 case XFS_LI_QUOTAOFF:
2708
2709 return 0;
2710 default:
2711 xfs_warn(log->l_mp, "%s: invalid item type (%d)",
2712 __func__, ITEM_TYPE(item));
2713 ASSERT(0);
2714 return XFS_ERROR(EIO);
2715 }
2716}
2717
2718
2719
2720
2721
2722
2723
2724STATIC int
2725xlog_recover_commit_trans(
2726 struct log *log,
2727 struct xlog_recover *trans,
2728 int pass)
2729{
2730 int error = 0;
2731 xlog_recover_item_t *item;
2732
2733 hlist_del(&trans->r_list);
2734
2735 error = xlog_recover_reorder_trans(log, trans, pass);
2736 if (error)
2737 return error;
2738
2739 list_for_each_entry(item, &trans->r_itemq, ri_list) {
2740 if (pass == XLOG_RECOVER_PASS1)
2741 error = xlog_recover_commit_pass1(log, trans, item);
2742 else
2743 error = xlog_recover_commit_pass2(log, trans, item);
2744 if (error)
2745 return error;
2746 }
2747
2748 xlog_recover_free_trans(trans);
2749 return 0;
2750}
2751
2752STATIC int
2753xlog_recover_unmount_trans(
2754 struct log *log,
2755 xlog_recover_t *trans)
2756{
2757
2758 xfs_warn(log->l_mp, "%s: Unmount LR", __func__);
2759 return 0;
2760}
2761
2762
2763
2764
2765
2766
2767
2768
2769
2770
2771STATIC int
2772xlog_recover_process_data(
2773 xlog_t *log,
2774 struct hlist_head rhash[],
2775 xlog_rec_header_t *rhead,
2776 xfs_caddr_t dp,
2777 int pass)
2778{
2779 xfs_caddr_t lp;
2780 int num_logops;
2781 xlog_op_header_t *ohead;
2782 xlog_recover_t *trans;
2783 xlog_tid_t tid;
2784 int error;
2785 unsigned long hash;
2786 uint flags;
2787
2788 lp = dp + be32_to_cpu(rhead->h_len);
2789 num_logops = be32_to_cpu(rhead->h_num_logops);
2790
2791
2792 if (xlog_header_check_recover(log->l_mp, rhead))
2793 return (XFS_ERROR(EIO));
2794
2795 while ((dp < lp) && num_logops) {
2796 ASSERT(dp + sizeof(xlog_op_header_t) <= lp);
2797 ohead = (xlog_op_header_t *)dp;
2798 dp += sizeof(xlog_op_header_t);
2799 if (ohead->oh_clientid != XFS_TRANSACTION &&
2800 ohead->oh_clientid != XFS_LOG) {
2801 xfs_warn(log->l_mp, "%s: bad clientid 0x%x",
2802 __func__, ohead->oh_clientid);
2803 ASSERT(0);
2804 return (XFS_ERROR(EIO));
2805 }
2806 tid = be32_to_cpu(ohead->oh_tid);
2807 hash = XLOG_RHASH(tid);
2808 trans = xlog_recover_find_tid(&rhash[hash], tid);
2809 if (trans == NULL) {
2810 if (ohead->oh_flags & XLOG_START_TRANS)
2811 xlog_recover_new_tid(&rhash[hash], tid,
2812 be64_to_cpu(rhead->h_lsn));
2813 } else {
2814 if (dp + be32_to_cpu(ohead->oh_len) > lp) {
2815 xfs_warn(log->l_mp, "%s: bad length 0x%x",
2816 __func__, be32_to_cpu(ohead->oh_len));
2817 WARN_ON(1);
2818 return (XFS_ERROR(EIO));
2819 }
2820 flags = ohead->oh_flags & ~XLOG_END_TRANS;
2821 if (flags & XLOG_WAS_CONT_TRANS)
2822 flags &= ~XLOG_CONTINUE_TRANS;
2823 switch (flags) {
2824 case XLOG_COMMIT_TRANS:
2825 error = xlog_recover_commit_trans(log,
2826 trans, pass);
2827 break;
2828 case XLOG_UNMOUNT_TRANS:
2829 error = xlog_recover_unmount_trans(log, trans);
2830 break;
2831 case XLOG_WAS_CONT_TRANS:
2832 error = xlog_recover_add_to_cont_trans(log,
2833 trans, dp,
2834 be32_to_cpu(ohead->oh_len));
2835 break;
2836 case XLOG_START_TRANS:
2837 xfs_warn(log->l_mp, "%s: bad transaction",
2838 __func__);
2839 ASSERT(0);
2840 error = XFS_ERROR(EIO);
2841 break;
2842 case 0:
2843 case XLOG_CONTINUE_TRANS:
2844 error = xlog_recover_add_to_trans(log, trans,
2845 dp, be32_to_cpu(ohead->oh_len));
2846 break;
2847 default:
2848 xfs_warn(log->l_mp, "%s: bad flag 0x%x",
2849 __func__, flags);
2850 ASSERT(0);
2851 error = XFS_ERROR(EIO);
2852 break;
2853 }
2854 if (error)
2855 return error;
2856 }
2857 dp += be32_to_cpu(ohead->oh_len);
2858 num_logops--;
2859 }
2860 return 0;
2861}
2862
2863
2864
2865
2866
2867STATIC int
2868xlog_recover_process_efi(
2869 xfs_mount_t *mp,
2870 xfs_efi_log_item_t *efip)
2871{
2872 xfs_efd_log_item_t *efdp;
2873 xfs_trans_t *tp;
2874 int i;
2875 int error = 0;
2876 xfs_extent_t *extp;
2877 xfs_fsblock_t startblock_fsb;
2878
2879 ASSERT(!test_bit(XFS_EFI_RECOVERED, &efip->efi_flags));
2880
2881
2882
2883
2884
2885
2886 for (i = 0; i < efip->efi_format.efi_nextents; i++) {
2887 extp = &(efip->efi_format.efi_extents[i]);
2888 startblock_fsb = XFS_BB_TO_FSB(mp,
2889 XFS_FSB_TO_DADDR(mp, extp->ext_start));
2890 if ((startblock_fsb == 0) ||
2891 (extp->ext_len == 0) ||
2892 (startblock_fsb >= mp->m_sb.sb_dblocks) ||
2893 (extp->ext_len >= mp->m_sb.sb_agblocks)) {
2894
2895
2896
2897
2898 xfs_efi_release(efip, efip->efi_format.efi_nextents);
2899 return XFS_ERROR(EIO);
2900 }
2901 }
2902
2903 tp = xfs_trans_alloc(mp, 0);
2904 error = xfs_trans_reserve(tp, 0, XFS_ITRUNCATE_LOG_RES(mp), 0, 0, 0);
2905 if (error)
2906 goto abort_error;
2907 efdp = xfs_trans_get_efd(tp, efip, efip->efi_format.efi_nextents);
2908
2909 for (i = 0; i < efip->efi_format.efi_nextents; i++) {
2910 extp = &(efip->efi_format.efi_extents[i]);
2911 error = xfs_free_extent(tp, extp->ext_start, extp->ext_len);
2912 if (error)
2913 goto abort_error;
2914 xfs_trans_log_efd_extent(tp, efdp, extp->ext_start,
2915 extp->ext_len);
2916 }
2917
2918 set_bit(XFS_EFI_RECOVERED, &efip->efi_flags);
2919 error = xfs_trans_commit(tp, 0);
2920 return error;
2921
2922abort_error:
2923 xfs_trans_cancel(tp, XFS_TRANS_ABORT);
2924 return error;
2925}
2926
2927
2928
2929
2930
2931
2932
2933
2934
2935
2936
2937
2938
2939
2940
2941
2942
2943
2944
2945STATIC int
2946xlog_recover_process_efis(
2947 xlog_t *log)
2948{
2949 xfs_log_item_t *lip;
2950 xfs_efi_log_item_t *efip;
2951 int error = 0;
2952 struct xfs_ail_cursor cur;
2953 struct xfs_ail *ailp;
2954
2955 ailp = log->l_ailp;
2956 spin_lock(&ailp->xa_lock);
2957 lip = xfs_trans_ail_cursor_first(ailp, &cur, 0);
2958 while (lip != NULL) {
2959
2960
2961
2962
2963 if (lip->li_type != XFS_LI_EFI) {
2964#ifdef DEBUG
2965 for (; lip; lip = xfs_trans_ail_cursor_next(ailp, &cur))
2966 ASSERT(lip->li_type != XFS_LI_EFI);
2967#endif
2968 break;
2969 }
2970
2971
2972
2973
2974 efip = (xfs_efi_log_item_t *)lip;
2975 if (test_bit(XFS_EFI_RECOVERED, &efip->efi_flags)) {
2976 lip = xfs_trans_ail_cursor_next(ailp, &cur);
2977 continue;
2978 }
2979
2980 spin_unlock(&ailp->xa_lock);
2981 error = xlog_recover_process_efi(log->l_mp, efip);
2982 spin_lock(&ailp->xa_lock);
2983 if (error)
2984 goto out;
2985 lip = xfs_trans_ail_cursor_next(ailp, &cur);
2986 }
2987out:
2988 xfs_trans_ail_cursor_done(ailp, &cur);
2989 spin_unlock(&ailp->xa_lock);
2990 return error;
2991}
2992
2993
2994
2995
2996
2997STATIC void
2998xlog_recover_clear_agi_bucket(
2999 xfs_mount_t *mp,
3000 xfs_agnumber_t agno,
3001 int bucket)
3002{
3003 xfs_trans_t *tp;
3004 xfs_agi_t *agi;
3005 xfs_buf_t *agibp;
3006 int offset;
3007 int error;
3008
3009 tp = xfs_trans_alloc(mp, XFS_TRANS_CLEAR_AGI_BUCKET);
3010 error = xfs_trans_reserve(tp, 0, XFS_CLEAR_AGI_BUCKET_LOG_RES(mp),
3011 0, 0, 0);
3012 if (error)
3013 goto out_abort;
3014
3015 error = xfs_read_agi(mp, tp, agno, &agibp);
3016 if (error)
3017 goto out_abort;
3018
3019 agi = XFS_BUF_TO_AGI(agibp);
3020 agi->agi_unlinked[bucket] = cpu_to_be32(NULLAGINO);
3021 offset = offsetof(xfs_agi_t, agi_unlinked) +
3022 (sizeof(xfs_agino_t) * bucket);
3023 xfs_trans_log_buf(tp, agibp, offset,
3024 (offset + sizeof(xfs_agino_t) - 1));
3025
3026 error = xfs_trans_commit(tp, 0);
3027 if (error)
3028 goto out_error;
3029 return;
3030
3031out_abort:
3032 xfs_trans_cancel(tp, XFS_TRANS_ABORT);
3033out_error:
3034 xfs_warn(mp, "%s: failed to clear agi %d. Continuing.", __func__, agno);
3035 return;
3036}
3037
3038STATIC xfs_agino_t
3039xlog_recover_process_one_iunlink(
3040 struct xfs_mount *mp,
3041 xfs_agnumber_t agno,
3042 xfs_agino_t agino,
3043 int bucket)
3044{
3045 struct xfs_buf *ibp;
3046 struct xfs_dinode *dip;
3047 struct xfs_inode *ip;
3048 xfs_ino_t ino;
3049 int error;
3050
3051 ino = XFS_AGINO_TO_INO(mp, agno, agino);
3052 error = xfs_iget(mp, NULL, ino, 0, 0, &ip);
3053 if (error)
3054 goto fail;
3055
3056
3057
3058
3059 error = xfs_itobp(mp, NULL, ip, &dip, &ibp, XBF_LOCK);
3060 if (error)
3061 goto fail_iput;
3062
3063 ASSERT(ip->i_d.di_nlink == 0);
3064 ASSERT(ip->i_d.di_mode != 0);
3065
3066
3067 agino = be32_to_cpu(dip->di_next_unlinked);
3068 xfs_buf_relse(ibp);
3069
3070
3071
3072
3073
3074 ip->i_d.di_dmevmask = 0;
3075
3076 IRELE(ip);
3077 return agino;
3078
3079 fail_iput:
3080 IRELE(ip);
3081 fail:
3082
3083
3084
3085
3086
3087
3088
3089
3090 xlog_recover_clear_agi_bucket(mp, agno, bucket);
3091 return NULLAGINO;
3092}
3093
3094
3095
3096
3097
3098
3099
3100
3101
3102
3103
3104
3105
3106STATIC void
3107xlog_recover_process_iunlinks(
3108 xlog_t *log)
3109{
3110 xfs_mount_t *mp;
3111 xfs_agnumber_t agno;
3112 xfs_agi_t *agi;
3113 xfs_buf_t *agibp;
3114 xfs_agino_t agino;
3115 int bucket;
3116 int error;
3117 uint mp_dmevmask;
3118
3119 mp = log->l_mp;
3120
3121
3122
3123
3124 mp_dmevmask = mp->m_dmevmask;
3125 mp->m_dmevmask = 0;
3126
3127 for (agno = 0; agno < mp->m_sb.sb_agcount; agno++) {
3128
3129
3130
3131 error = xfs_read_agi(mp, NULL, agno, &agibp);
3132 if (error) {
3133
3134
3135
3136
3137
3138
3139 continue;
3140 }
3141 agi = XFS_BUF_TO_AGI(agibp);
3142
3143 for (bucket = 0; bucket < XFS_AGI_UNLINKED_BUCKETS; bucket++) {
3144 agino = be32_to_cpu(agi->agi_unlinked[bucket]);
3145 while (agino != NULLAGINO) {
3146
3147
3148
3149
3150
3151 xfs_buf_relse(agibp);
3152
3153 agino = xlog_recover_process_one_iunlink(mp,
3154 agno, agino, bucket);
3155
3156
3157
3158
3159
3160
3161 error = xfs_read_agi(mp, NULL, agno, &agibp);
3162 ASSERT(error == 0);
3163 agi = XFS_BUF_TO_AGI(agibp);
3164 }
3165 }
3166
3167
3168
3169
3170
3171 xfs_buf_relse(agibp);
3172 }
3173
3174 mp->m_dmevmask = mp_dmevmask;
3175}
3176
3177
3178#ifdef DEBUG
3179STATIC void
3180xlog_pack_data_checksum(
3181 xlog_t *log,
3182 xlog_in_core_t *iclog,
3183 int size)
3184{
3185 int i;
3186 __be32 *up;
3187 uint chksum = 0;
3188
3189 up = (__be32 *)iclog->ic_datap;
3190
3191 for (i = 0; i < (size >> 2); i++) {
3192 chksum ^= be32_to_cpu(*up);
3193 up++;
3194 }
3195 iclog->ic_header.h_chksum = cpu_to_be32(chksum);
3196}
3197#else
3198#define xlog_pack_data_checksum(log, iclog, size)
3199#endif
3200
3201
3202
3203
3204void
3205xlog_pack_data(
3206 xlog_t *log,
3207 xlog_in_core_t *iclog,
3208 int roundoff)
3209{
3210 int i, j, k;
3211 int size = iclog->ic_offset + roundoff;
3212 __be32 cycle_lsn;
3213 xfs_caddr_t dp;
3214
3215 xlog_pack_data_checksum(log, iclog, size);
3216
3217 cycle_lsn = CYCLE_LSN_DISK(iclog->ic_header.h_lsn);
3218
3219 dp = iclog->ic_datap;
3220 for (i = 0; i < BTOBB(size) &&
3221 i < (XLOG_HEADER_CYCLE_SIZE / BBSIZE); i++) {
3222 iclog->ic_header.h_cycle_data[i] = *(__be32 *)dp;
3223 *(__be32 *)dp = cycle_lsn;
3224 dp += BBSIZE;
3225 }
3226
3227 if (xfs_sb_version_haslogv2(&log->l_mp->m_sb)) {
3228 xlog_in_core_2_t *xhdr = iclog->ic_data;
3229
3230 for ( ; i < BTOBB(size); i++) {
3231 j = i / (XLOG_HEADER_CYCLE_SIZE / BBSIZE);
3232 k = i % (XLOG_HEADER_CYCLE_SIZE / BBSIZE);
3233 xhdr[j].hic_xheader.xh_cycle_data[k] = *(__be32 *)dp;
3234 *(__be32 *)dp = cycle_lsn;
3235 dp += BBSIZE;
3236 }
3237
3238 for (i = 1; i < log->l_iclog_heads; i++) {
3239 xhdr[i].hic_xheader.xh_cycle = cycle_lsn;
3240 }
3241 }
3242}
3243
3244STATIC void
3245xlog_unpack_data(
3246 xlog_rec_header_t *rhead,
3247 xfs_caddr_t dp,
3248 xlog_t *log)
3249{
3250 int i, j, k;
3251
3252 for (i = 0; i < BTOBB(be32_to_cpu(rhead->h_len)) &&
3253 i < (XLOG_HEADER_CYCLE_SIZE / BBSIZE); i++) {
3254 *(__be32 *)dp = *(__be32 *)&rhead->h_cycle_data[i];
3255 dp += BBSIZE;
3256 }
3257
3258 if (xfs_sb_version_haslogv2(&log->l_mp->m_sb)) {
3259 xlog_in_core_2_t *xhdr = (xlog_in_core_2_t *)rhead;
3260 for ( ; i < BTOBB(be32_to_cpu(rhead->h_len)); i++) {
3261 j = i / (XLOG_HEADER_CYCLE_SIZE / BBSIZE);
3262 k = i % (XLOG_HEADER_CYCLE_SIZE / BBSIZE);
3263 *(__be32 *)dp = xhdr[j].hic_xheader.xh_cycle_data[k];
3264 dp += BBSIZE;
3265 }
3266 }
3267}
3268
3269STATIC int
3270xlog_valid_rec_header(
3271 xlog_t *log,
3272 xlog_rec_header_t *rhead,
3273 xfs_daddr_t blkno)
3274{
3275 int hlen;
3276
3277 if (unlikely(be32_to_cpu(rhead->h_magicno) != XLOG_HEADER_MAGIC_NUM)) {
3278 XFS_ERROR_REPORT("xlog_valid_rec_header(1)",
3279 XFS_ERRLEVEL_LOW, log->l_mp);
3280 return XFS_ERROR(EFSCORRUPTED);
3281 }
3282 if (unlikely(
3283 (!rhead->h_version ||
3284 (be32_to_cpu(rhead->h_version) & (~XLOG_VERSION_OKBITS))))) {
3285 xfs_warn(log->l_mp, "%s: unrecognised log version (%d).",
3286 __func__, be32_to_cpu(rhead->h_version));
3287 return XFS_ERROR(EIO);
3288 }
3289
3290
3291 hlen = be32_to_cpu(rhead->h_len);
3292 if (unlikely( hlen <= 0 || hlen > INT_MAX )) {
3293 XFS_ERROR_REPORT("xlog_valid_rec_header(2)",
3294 XFS_ERRLEVEL_LOW, log->l_mp);
3295 return XFS_ERROR(EFSCORRUPTED);
3296 }
3297 if (unlikely( blkno > log->l_logBBsize || blkno > INT_MAX )) {
3298 XFS_ERROR_REPORT("xlog_valid_rec_header(3)",
3299 XFS_ERRLEVEL_LOW, log->l_mp);
3300 return XFS_ERROR(EFSCORRUPTED);
3301 }
3302 return 0;
3303}
3304
3305
3306
3307
3308
3309
3310
3311
3312
3313STATIC int
3314xlog_do_recovery_pass(
3315 xlog_t *log,
3316 xfs_daddr_t head_blk,
3317 xfs_daddr_t tail_blk,
3318 int pass)
3319{
3320 xlog_rec_header_t *rhead;
3321 xfs_daddr_t blk_no;
3322 xfs_caddr_t offset;
3323 xfs_buf_t *hbp, *dbp;
3324 int error = 0, h_size;
3325 int bblks, split_bblks;
3326 int hblks, split_hblks, wrapped_hblks;
3327 struct hlist_head rhash[XLOG_RHASH_SIZE];
3328
3329 ASSERT(head_blk != tail_blk);
3330
3331
3332
3333
3334
3335 if (xfs_sb_version_haslogv2(&log->l_mp->m_sb)) {
3336
3337
3338
3339
3340
3341 hbp = xlog_get_bp(log, 1);
3342 if (!hbp)
3343 return ENOMEM;
3344
3345 error = xlog_bread(log, tail_blk, 1, hbp, &offset);
3346 if (error)
3347 goto bread_err1;
3348
3349 rhead = (xlog_rec_header_t *)offset;
3350 error = xlog_valid_rec_header(log, rhead, tail_blk);
3351 if (error)
3352 goto bread_err1;
3353 h_size = be32_to_cpu(rhead->h_size);
3354 if ((be32_to_cpu(rhead->h_version) & XLOG_VERSION_2) &&
3355 (h_size > XLOG_HEADER_CYCLE_SIZE)) {
3356 hblks = h_size / XLOG_HEADER_CYCLE_SIZE;
3357 if (h_size % XLOG_HEADER_CYCLE_SIZE)
3358 hblks++;
3359 xlog_put_bp(hbp);
3360 hbp = xlog_get_bp(log, hblks);
3361 } else {
3362 hblks = 1;
3363 }
3364 } else {
3365 ASSERT(log->l_sectBBsize == 1);
3366 hblks = 1;
3367 hbp = xlog_get_bp(log, 1);
3368 h_size = XLOG_BIG_RECORD_BSIZE;
3369 }
3370
3371 if (!hbp)
3372 return ENOMEM;
3373 dbp = xlog_get_bp(log, BTOBB(h_size));
3374 if (!dbp) {
3375 xlog_put_bp(hbp);
3376 return ENOMEM;
3377 }
3378
3379 memset(rhash, 0, sizeof(rhash));
3380 if (tail_blk <= head_blk) {
3381 for (blk_no = tail_blk; blk_no < head_blk; ) {
3382 error = xlog_bread(log, blk_no, hblks, hbp, &offset);
3383 if (error)
3384 goto bread_err2;
3385
3386 rhead = (xlog_rec_header_t *)offset;
3387 error = xlog_valid_rec_header(log, rhead, blk_no);
3388 if (error)
3389 goto bread_err2;
3390
3391
3392 bblks = (int)BTOBB(be32_to_cpu(rhead->h_len));
3393 error = xlog_bread(log, blk_no + hblks, bblks, dbp,
3394 &offset);
3395 if (error)
3396 goto bread_err2;
3397
3398 xlog_unpack_data(rhead, offset, log);
3399 if ((error = xlog_recover_process_data(log,
3400 rhash, rhead, offset, pass)))
3401 goto bread_err2;
3402 blk_no += bblks + hblks;
3403 }
3404 } else {
3405
3406
3407
3408
3409
3410 blk_no = tail_blk;
3411 while (blk_no < log->l_logBBsize) {
3412
3413
3414
3415 offset = XFS_BUF_PTR(hbp);
3416 split_hblks = 0;
3417 wrapped_hblks = 0;
3418 if (blk_no + hblks <= log->l_logBBsize) {
3419
3420 error = xlog_bread(log, blk_no, hblks, hbp,
3421 &offset);
3422 if (error)
3423 goto bread_err2;
3424 } else {
3425
3426 if (blk_no != log->l_logBBsize) {
3427
3428 ASSERT(blk_no <= INT_MAX);
3429 split_hblks = log->l_logBBsize - (int)blk_no;
3430 ASSERT(split_hblks > 0);
3431 error = xlog_bread(log, blk_no,
3432 split_hblks, hbp,
3433 &offset);
3434 if (error)
3435 goto bread_err2;
3436 }
3437
3438
3439
3440
3441
3442
3443
3444
3445
3446
3447
3448
3449
3450 wrapped_hblks = hblks - split_hblks;
3451 error = XFS_BUF_SET_PTR(hbp,
3452 offset + BBTOB(split_hblks),
3453 BBTOB(hblks - split_hblks));
3454 if (error)
3455 goto bread_err2;
3456
3457 error = xlog_bread_noalign(log, 0,
3458 wrapped_hblks, hbp);
3459 if (error)
3460 goto bread_err2;
3461
3462 error = XFS_BUF_SET_PTR(hbp, offset,
3463 BBTOB(hblks));
3464 if (error)
3465 goto bread_err2;
3466 }
3467 rhead = (xlog_rec_header_t *)offset;
3468 error = xlog_valid_rec_header(log, rhead,
3469 split_hblks ? blk_no : 0);
3470 if (error)
3471 goto bread_err2;
3472
3473 bblks = (int)BTOBB(be32_to_cpu(rhead->h_len));
3474 blk_no += hblks;
3475
3476
3477 if (blk_no + bblks <= log->l_logBBsize) {
3478 error = xlog_bread(log, blk_no, bblks, dbp,
3479 &offset);
3480 if (error)
3481 goto bread_err2;
3482 } else {
3483
3484
3485 offset = XFS_BUF_PTR(dbp);
3486 split_bblks = 0;
3487 if (blk_no != log->l_logBBsize) {
3488
3489
3490 ASSERT(!wrapped_hblks);
3491 ASSERT(blk_no <= INT_MAX);
3492 split_bblks =
3493 log->l_logBBsize - (int)blk_no;
3494 ASSERT(split_bblks > 0);
3495 error = xlog_bread(log, blk_no,
3496 split_bblks, dbp,
3497 &offset);
3498 if (error)
3499 goto bread_err2;
3500 }
3501
3502
3503
3504
3505
3506
3507
3508
3509
3510
3511
3512
3513
3514 error = XFS_BUF_SET_PTR(dbp,
3515 offset + BBTOB(split_bblks),
3516 BBTOB(bblks - split_bblks));
3517 if (error)
3518 goto bread_err2;
3519
3520 error = xlog_bread_noalign(log, wrapped_hblks,
3521 bblks - split_bblks,
3522 dbp);
3523 if (error)
3524 goto bread_err2;
3525
3526 error = XFS_BUF_SET_PTR(dbp, offset, h_size);
3527 if (error)
3528 goto bread_err2;
3529 }
3530 xlog_unpack_data(rhead, offset, log);
3531 if ((error = xlog_recover_process_data(log, rhash,
3532 rhead, offset, pass)))
3533 goto bread_err2;
3534 blk_no += bblks;
3535 }
3536
3537 ASSERT(blk_no >= log->l_logBBsize);
3538 blk_no -= log->l_logBBsize;
3539
3540
3541 while (blk_no < head_blk) {
3542 error = xlog_bread(log, blk_no, hblks, hbp, &offset);
3543 if (error)
3544 goto bread_err2;
3545
3546 rhead = (xlog_rec_header_t *)offset;
3547 error = xlog_valid_rec_header(log, rhead, blk_no);
3548 if (error)
3549 goto bread_err2;
3550
3551 bblks = (int)BTOBB(be32_to_cpu(rhead->h_len));
3552 error = xlog_bread(log, blk_no+hblks, bblks, dbp,
3553 &offset);
3554 if (error)
3555 goto bread_err2;
3556
3557 xlog_unpack_data(rhead, offset, log);
3558 if ((error = xlog_recover_process_data(log, rhash,
3559 rhead, offset, pass)))
3560 goto bread_err2;
3561 blk_no += bblks + hblks;
3562 }
3563 }
3564
3565 bread_err2:
3566 xlog_put_bp(dbp);
3567 bread_err1:
3568 xlog_put_bp(hbp);
3569 return error;
3570}
3571
3572
3573
3574
3575
3576
3577
3578
3579
3580
3581
3582
3583
3584
3585STATIC int
3586xlog_do_log_recovery(
3587 xlog_t *log,
3588 xfs_daddr_t head_blk,
3589 xfs_daddr_t tail_blk)
3590{
3591 int error, i;
3592
3593 ASSERT(head_blk != tail_blk);
3594
3595
3596
3597
3598
3599 log->l_buf_cancel_table = kmem_zalloc(XLOG_BC_TABLE_SIZE *
3600 sizeof(struct list_head),
3601 KM_SLEEP);
3602 for (i = 0; i < XLOG_BC_TABLE_SIZE; i++)
3603 INIT_LIST_HEAD(&log->l_buf_cancel_table[i]);
3604
3605 error = xlog_do_recovery_pass(log, head_blk, tail_blk,
3606 XLOG_RECOVER_PASS1);
3607 if (error != 0) {
3608 kmem_free(log->l_buf_cancel_table);
3609 log->l_buf_cancel_table = NULL;
3610 return error;
3611 }
3612
3613
3614
3615
3616 error = xlog_do_recovery_pass(log, head_blk, tail_blk,
3617 XLOG_RECOVER_PASS2);
3618#ifdef DEBUG
3619 if (!error) {
3620 int i;
3621
3622 for (i = 0; i < XLOG_BC_TABLE_SIZE; i++)
3623 ASSERT(list_empty(&log->l_buf_cancel_table[i]));
3624 }
3625#endif
3626
3627 kmem_free(log->l_buf_cancel_table);
3628 log->l_buf_cancel_table = NULL;
3629
3630 return error;
3631}
3632
3633
3634
3635
3636STATIC int
3637xlog_do_recover(
3638 xlog_t *log,
3639 xfs_daddr_t head_blk,
3640 xfs_daddr_t tail_blk)
3641{
3642 int error;
3643 xfs_buf_t *bp;
3644 xfs_sb_t *sbp;
3645
3646
3647
3648
3649 error = xlog_do_log_recovery(log, head_blk, tail_blk);
3650 if (error) {
3651 return error;
3652 }
3653
3654 XFS_bflush(log->l_mp->m_ddev_targp);
3655
3656
3657
3658
3659 if (XFS_FORCED_SHUTDOWN(log->l_mp)) {
3660 return (EIO);
3661 }
3662
3663
3664
3665
3666
3667
3668
3669
3670
3671
3672 xlog_assign_tail_lsn(log->l_mp);
3673
3674
3675
3676
3677
3678 bp = xfs_getsb(log->l_mp, 0);
3679 XFS_BUF_UNDONE(bp);
3680 ASSERT(!(XFS_BUF_ISWRITE(bp)));
3681 ASSERT(!(XFS_BUF_ISDELAYWRITE(bp)));
3682 XFS_BUF_READ(bp);
3683 XFS_BUF_UNASYNC(bp);
3684 xfsbdstrat(log->l_mp, bp);
3685 error = xfs_buf_iowait(bp);
3686 if (error) {
3687 xfs_ioerror_alert("xlog_do_recover",
3688 log->l_mp, bp, XFS_BUF_ADDR(bp));
3689 ASSERT(0);
3690 xfs_buf_relse(bp);
3691 return error;
3692 }
3693
3694
3695 sbp = &log->l_mp->m_sb;
3696 xfs_sb_from_disk(sbp, XFS_BUF_TO_SBP(bp));
3697 ASSERT(sbp->sb_magicnum == XFS_SB_MAGIC);
3698 ASSERT(xfs_sb_good_version(sbp));
3699 xfs_buf_relse(bp);
3700
3701
3702 xfs_icsb_reinit_counters(log->l_mp);
3703
3704 xlog_recover_check_summary(log);
3705
3706
3707 log->l_flags &= ~XLOG_ACTIVE_RECOVERY;
3708 return 0;
3709}
3710
3711
3712
3713
3714
3715
3716int
3717xlog_recover(
3718 xlog_t *log)
3719{
3720 xfs_daddr_t head_blk, tail_blk;
3721 int error;
3722
3723
3724 if ((error = xlog_find_tail(log, &head_blk, &tail_blk)))
3725 return error;
3726
3727 if (tail_blk != head_blk) {
3728
3729
3730
3731
3732
3733
3734
3735
3736
3737
3738
3739 if ((error = xfs_dev_is_read_only(log->l_mp, "recovery"))) {
3740 return error;
3741 }
3742
3743 xfs_notice(log->l_mp, "Starting recovery (logdev: %s)",
3744 log->l_mp->m_logname ? log->l_mp->m_logname
3745 : "internal");
3746
3747 error = xlog_do_recover(log, head_blk, tail_blk);
3748 log->l_flags |= XLOG_RECOVERY_NEEDED;
3749 }
3750 return error;
3751}
3752
3753
3754
3755
3756
3757
3758
3759
3760
3761
3762int
3763xlog_recover_finish(
3764 xlog_t *log)
3765{
3766
3767
3768
3769
3770
3771
3772
3773
3774 if (log->l_flags & XLOG_RECOVERY_NEEDED) {
3775 int error;
3776 error = xlog_recover_process_efis(log);
3777 if (error) {
3778 xfs_alert(log->l_mp, "Failed to recover EFIs");
3779 return error;
3780 }
3781
3782
3783
3784
3785
3786
3787 xfs_log_force(log->l_mp, XFS_LOG_SYNC);
3788
3789 xlog_recover_process_iunlinks(log);
3790
3791 xlog_recover_check_summary(log);
3792
3793 xfs_notice(log->l_mp, "Ending recovery (logdev: %s)",
3794 log->l_mp->m_logname ? log->l_mp->m_logname
3795 : "internal");
3796 log->l_flags &= ~XLOG_RECOVERY_NEEDED;
3797 } else {
3798 xfs_info(log->l_mp, "Ending clean mount");
3799 }
3800 return 0;
3801}
3802
3803
3804#if defined(DEBUG)
3805
3806
3807
3808
3809void
3810xlog_recover_check_summary(
3811 xlog_t *log)
3812{
3813 xfs_mount_t *mp;
3814 xfs_agf_t *agfp;
3815 xfs_buf_t *agfbp;
3816 xfs_buf_t *agibp;
3817 xfs_agnumber_t agno;
3818 __uint64_t freeblks;
3819 __uint64_t itotal;
3820 __uint64_t ifree;
3821 int error;
3822
3823 mp = log->l_mp;
3824
3825 freeblks = 0LL;
3826 itotal = 0LL;
3827 ifree = 0LL;
3828 for (agno = 0; agno < mp->m_sb.sb_agcount; agno++) {
3829 error = xfs_read_agf(mp, NULL, agno, 0, &agfbp);
3830 if (error) {
3831 xfs_alert(mp, "%s agf read failed agno %d error %d",
3832 __func__, agno, error);
3833 } else {
3834 agfp = XFS_BUF_TO_AGF(agfbp);
3835 freeblks += be32_to_cpu(agfp->agf_freeblks) +
3836 be32_to_cpu(agfp->agf_flcount);
3837 xfs_buf_relse(agfbp);
3838 }
3839
3840 error = xfs_read_agi(mp, NULL, agno, &agibp);
3841 if (error) {
3842 xfs_alert(mp, "%s agi read failed agno %d error %d",
3843 __func__, agno, error);
3844 } else {
3845 struct xfs_agi *agi = XFS_BUF_TO_AGI(agibp);
3846
3847 itotal += be32_to_cpu(agi->agi_count);
3848 ifree += be32_to_cpu(agi->agi_freecount);
3849 xfs_buf_relse(agibp);
3850 }
3851 }
3852}
3853#endif
3854