2 * Copyright (c) 2008 The DragonFly Project. All rights reserved.
4 * This code is derived from software contributed to The DragonFly Project
5 * by Matthew Dillon <dillon@backplane.com>
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in
15 * the documentation and/or other materials provided with the
17 * 3. Neither the name of The DragonFly Project nor the names of its
18 * contributors may be used to endorse or promote products derived
19 * from this software without specific, prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
22 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
23 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
24 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
25 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
26 * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
27 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
28 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
29 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
30 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
31 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * $DragonFly: src/sbin/hammer/cmd_blockmap.c,v 1.4 2008/07/19 18:48:14 dillon Exp $
40 * Each collect covers 1<<(19+23) bytes address space of layer 1.
41 * (plus a copy of 1<<23 bytes that holds layer2 entries in layer 1).
43 typedef struct collect
{
44 RB_ENTRY(collect
) entry
;
45 hammer_off_t phys_offset
; /* layer2 address pointed by layer1 */
46 hammer_off_t
*offsets
; /* big-block offset for layer2[i] */
47 hammer_blockmap_layer2_t track2
; /* track of layer2 entries */
48 hammer_blockmap_layer2_t layer2
; /* 1<<19 x 16 bytes entries */
49 int error
; /* # of inconsistencies */
53 collect_compare(struct collect
*c1
, struct collect
*c2
)
55 if (c1
->phys_offset
< c2
->phys_offset
)
57 if (c1
->phys_offset
> c2
->phys_offset
)
62 RB_HEAD(collect_rb_tree
, collect
) CollectTree
= RB_INITIALIZER(&CollectTree
);
63 RB_PROTOTYPE2(collect_rb_tree
, collect
, entry
, collect_compare
, hammer_off_t
);
64 RB_GENERATE2(collect_rb_tree
, collect
, entry
, collect_compare
, hammer_off_t
,
67 static void dump_blockmap(int zone
);
68 static void check_freemap(hammer_blockmap_t freemap
);
69 static void check_btree_node(hammer_off_t node_offset
, int depth
);
70 static void check_undo(hammer_blockmap_t undomap
);
71 static __inline
void collect_btree_root(hammer_off_t node_offset
);
72 static __inline
void collect_btree_internal(hammer_btree_elm_t elm
);
73 static __inline
void collect_btree_leaf(hammer_btree_elm_t elm
);
74 static __inline
void collect_freemap_layer1(hammer_blockmap_t freemap
);
75 static __inline
void collect_freemap_layer2(hammer_blockmap_layer1_t layer1
);
76 static __inline
void collect_undo(hammer_off_t scan_offset
,
77 hammer_fifo_head_t head
);
78 static void collect_blockmap(hammer_off_t offset
, int32_t length
, int zone
);
79 static hammer_blockmap_layer2_t
collect_get_track(
80 collect_t collect
, hammer_off_t offset
, int zone
,
81 hammer_blockmap_layer2_t layer2
);
82 static collect_t
collect_get(hammer_off_t phys_offset
);
83 static void dump_collect_table(void);
84 static void dump_collect(collect_t collect
, struct zone_stat
*stats
);
86 static int num_bad_layer1
= 0;
87 static int num_bad_layer2
= 0;
88 static int num_bad_node
= 0;
91 hammer_cmd_blockmap(void)
93 dump_blockmap(HAMMER_ZONE_FREEMAP_INDEX
);
98 dump_blockmap(int zone
)
100 volume_info_t root_volume
;
101 hammer_blockmap_t rootmap
;
102 hammer_blockmap_layer1_t layer1
;
103 hammer_blockmap_layer2_t layer2
;
104 buffer_info_t buffer1
= NULL
;
105 buffer_info_t buffer2
= NULL
;
106 hammer_off_t layer1_offset
;
107 hammer_off_t layer2_offset
;
108 hammer_off_t phys_offset
;
109 hammer_off_t block_offset
;
110 struct zone_stat
*stats
= NULL
;
111 int xerr
, aerr
, ferr
;
113 root_volume
= get_root_volume();
114 rootmap
= &root_volume
->ondisk
->vol0_blockmap
[zone
];
115 assert(rootmap
->phys_offset
!= 0);
117 print_blockmap(root_volume
);
120 stats
= hammer_init_zone_stat();
122 for (phys_offset
= HAMMER_ZONE_ENCODE(zone
, 0);
123 phys_offset
< HAMMER_ZONE_ENCODE(zone
, HAMMER_OFF_LONG_MASK
);
124 phys_offset
+= HAMMER_BLOCKMAP_LAYER2
) {
128 layer1_offset
= rootmap
->phys_offset
+
129 HAMMER_BLOCKMAP_LAYER1_OFFSET(phys_offset
);
130 layer1
= get_buffer_data(layer1_offset
, &buffer1
, 0);
132 xerr
= ' '; /* good */
133 if (!hammer_crc_test_layer1(HammerVersion
, layer1
)) {
138 layer1
->phys_offset
== HAMMER_BLOCKMAP_UNAVAIL
) {
141 printf("%c layer1 %016jx @%016jx blocks-free %jd\n",
143 (uintmax_t)phys_offset
,
144 (uintmax_t)layer1
->phys_offset
,
145 (intmax_t)layer1
->blocks_free
);
147 for (block_offset
= 0;
148 block_offset
< HAMMER_BLOCKMAP_LAYER2
;
149 block_offset
+= HAMMER_BIGBLOCK_SIZE
) {
150 hammer_off_t zone_offset
= phys_offset
+ block_offset
;
152 * Dive layer 2, each entry represents a big-block.
154 layer2_offset
= layer1
->phys_offset
+
155 HAMMER_BLOCKMAP_LAYER2_OFFSET(block_offset
);
156 layer2
= get_buffer_data(layer2_offset
, &buffer2
, 0);
158 xerr
= aerr
= ferr
= ' '; /* good */
159 if (!hammer_crc_test_layer2(HammerVersion
, layer2
)) {
163 if (layer2
->append_off
> HAMMER_BIGBLOCK_SIZE
) {
167 if (layer2
->bytes_free
< 0 ||
168 layer2
->bytes_free
> HAMMER_BIGBLOCK_SIZE
) {
173 if (VerboseOpt
< 2 &&
174 xerr
== ' ' && aerr
== ' ' && ferr
== ' ' &&
175 layer2
->zone
== HAMMER_ZONE_UNAVAIL_INDEX
) {
178 printf("%c%c%c %016jx zone=%-2d ",
179 xerr
, aerr
, ferr
, (uintmax_t)zone_offset
, layer2
->zone
);
181 printf("vol=%-3d L1#=%-6d L2#=%-6d L1=%-7lu L2=%-7lu ",
182 HAMMER_VOL_DECODE(zone_offset
),
183 HAMMER_BLOCKMAP_LAYER1_INDEX(zone_offset
),
184 HAMMER_BLOCKMAP_LAYER2_INDEX(zone_offset
),
185 HAMMER_BLOCKMAP_LAYER1_OFFSET(zone_offset
),
186 HAMMER_BLOCKMAP_LAYER2_OFFSET(zone_offset
));
188 printf("app=%-7d free=%-7d",
192 double bytes_used
= HAMMER_BIGBLOCK_SIZE
-
194 printf(" fill=%-5.1lf crc=%08x-%08x\n",
195 bytes_used
* 100 / HAMMER_BIGBLOCK_SIZE
,
203 hammer_add_zone_stat_layer2(stats
, layer2
);
210 hammer_print_zone_stat(stats
);
211 hammer_cleanup_zone_stat(stats
);
214 if (num_bad_layer1
|| VerboseOpt
)
215 printf("%d bad layer1\n", num_bad_layer1
);
216 if (num_bad_layer2
|| VerboseOpt
)
217 printf("%d bad layer2\n", num_bad_layer1
);
221 hammer_cmd_checkmap(void)
223 volume_info_t volume
;
224 hammer_blockmap_t freemap
;
225 hammer_blockmap_t undomap
;
226 hammer_off_t node_offset
;
228 volume
= get_root_volume();
229 node_offset
= volume
->ondisk
->vol0_btree_root
;
230 freemap
= &volume
->ondisk
->vol0_blockmap
[HAMMER_ZONE_FREEMAP_INDEX
];
231 undomap
= &volume
->ondisk
->vol0_blockmap
[HAMMER_ZONE_UNDO_INDEX
];
233 print_blockmap(volume
);
235 printf("Collecting allocation info from freemap: ");
237 check_freemap(freemap
);
240 printf("Collecting allocation info from B-Tree: ");
242 check_btree_node(node_offset
, 0);
245 printf("Collecting allocation info from UNDO: ");
250 dump_collect_table();
254 check_freemap(hammer_blockmap_t freemap
)
257 buffer_info_t buffer1
= NULL
;
258 hammer_blockmap_layer1_t layer1
;
261 collect_freemap_layer1(freemap
);
263 for (i
= 0; i
< HAMMER_BLOCKMAP_RADIX1
; ++i
) {
264 offset
= freemap
->phys_offset
+ i
* sizeof(*layer1
);
265 layer1
= get_buffer_data(offset
, &buffer1
, 0);
266 if (layer1
->phys_offset
!= HAMMER_BLOCKMAP_UNAVAIL
)
267 collect_freemap_layer2(layer1
);
273 check_btree_node(hammer_off_t node_offset
, int depth
)
275 buffer_info_t buffer
= NULL
;
276 hammer_node_ondisk_t node
;
277 hammer_btree_elm_t elm
;
279 char badc
= ' '; /* good */
280 char badm
= ' '; /* good */
283 collect_btree_root(node_offset
);
284 node
= get_buffer_data(node_offset
, &buffer
, 0);
289 } else if (!hammer_crc_test_btree(HammerVersion
, node
)) {
293 if (badm
!= ' ' || badc
!= ' ') { /* not good */
295 printf("%c%c NODE %016jx ",
296 badc
, badm
, (uintmax_t)node_offset
);
298 printf("(IO ERROR)\n");
302 printf("cnt=%02d p=%016jx type=%c depth=%d mirror=%016jx\n",
304 (uintmax_t)node
->parent
,
305 (node
->type
? node
->type
: '?'),
307 (uintmax_t)node
->mirror_tid
);
311 for (i
= 0; i
< node
->count
; ++i
) {
312 elm
= &node
->elms
[i
];
315 case HAMMER_BTREE_TYPE_INTERNAL
:
316 if (elm
->internal
.subtree_offset
) {
317 collect_btree_internal(elm
);
318 check_btree_node(elm
->internal
.subtree_offset
,
322 case HAMMER_BTREE_TYPE_LEAF
:
323 if (elm
->leaf
.data_offset
)
324 collect_btree_leaf(elm
);
335 check_undo(hammer_blockmap_t undomap
)
337 buffer_info_t buffer
= NULL
;
338 hammer_off_t scan_offset
;
339 hammer_fifo_head_t head
;
341 scan_offset
= HAMMER_ENCODE_UNDO(0);
342 while (scan_offset
< undomap
->alloc_offset
) {
343 head
= get_buffer_data(scan_offset
, &buffer
, 0);
344 switch (head
->hdr_type
) {
345 case HAMMER_HEAD_TYPE_PAD
:
346 case HAMMER_HEAD_TYPE_DUMMY
:
347 case HAMMER_HEAD_TYPE_UNDO
:
348 case HAMMER_HEAD_TYPE_REDO
:
349 collect_undo(scan_offset
, head
);
355 if ((head
->hdr_size
& HAMMER_HEAD_ALIGN_MASK
) ||
356 head
->hdr_size
== 0 ||
357 head
->hdr_size
> HAMMER_UNDO_ALIGN
-
358 ((u_int
)scan_offset
& HAMMER_UNDO_MASK
)) {
359 printf("Illegal size, skipping to next boundary\n");
360 scan_offset
= HAMMER_UNDO_DOALIGN(scan_offset
);
362 scan_offset
+= head
->hdr_size
;
370 collect_freemap_layer1(hammer_blockmap_t freemap
)
373 * This translation is necessary to do checkmap properly
374 * as zone4 is really just zone2 address space.
376 hammer_off_t zone4_offset
= hammer_xlate_to_zoneX(
377 HAMMER_ZONE_FREEMAP_INDEX
, freemap
->phys_offset
);
378 collect_blockmap(zone4_offset
, HAMMER_BIGBLOCK_SIZE
,
379 HAMMER_ZONE_FREEMAP_INDEX
);
384 collect_freemap_layer2(hammer_blockmap_layer1_t layer1
)
387 * This translation is necessary to do checkmap properly
388 * as zone4 is really just zone2 address space.
390 hammer_off_t zone4_offset
= hammer_xlate_to_zoneX(
391 HAMMER_ZONE_FREEMAP_INDEX
, layer1
->phys_offset
);
392 collect_blockmap(zone4_offset
, HAMMER_BIGBLOCK_SIZE
,
393 HAMMER_ZONE_FREEMAP_INDEX
);
398 collect_btree_root(hammer_off_t node_offset
)
400 collect_blockmap(node_offset
,
401 sizeof(struct hammer_node_ondisk
), /* 4KB */
402 HAMMER_ZONE_BTREE_INDEX
);
407 collect_btree_internal(hammer_btree_elm_t elm
)
409 collect_blockmap(elm
->internal
.subtree_offset
,
410 sizeof(struct hammer_node_ondisk
), /* 4KB */
411 HAMMER_ZONE_BTREE_INDEX
);
416 collect_btree_leaf(hammer_btree_elm_t elm
)
420 switch (elm
->base
.rec_type
) {
421 case HAMMER_RECTYPE_INODE
:
422 case HAMMER_RECTYPE_DIRENTRY
:
423 case HAMMER_RECTYPE_EXT
:
424 case HAMMER_RECTYPE_FIX
:
425 case HAMMER_RECTYPE_PFS
:
426 case HAMMER_RECTYPE_SNAPSHOT
:
427 case HAMMER_RECTYPE_CONFIG
:
428 zone
= HAMMER_ZONE_META_INDEX
;
430 case HAMMER_RECTYPE_DATA
:
431 case HAMMER_RECTYPE_DB
:
432 zone
= hammer_data_zone_index(elm
->leaf
.data_len
);
435 zone
= HAMMER_ZONE_UNAVAIL_INDEX
;
438 collect_blockmap(elm
->leaf
.data_offset
,
439 HAMMER_DATA_DOALIGN(elm
->leaf
.data_len
), zone
);
444 collect_undo(hammer_off_t scan_offset
, hammer_fifo_head_t head
)
446 collect_blockmap(scan_offset
, head
->hdr_size
,
447 HAMMER_ZONE_UNDO_INDEX
);
452 collect_blockmap(hammer_off_t offset
, int32_t length
, int zone
)
454 struct hammer_blockmap_layer1 layer1
;
455 struct hammer_blockmap_layer2 layer2
;
456 hammer_blockmap_layer2_t track2
;
457 hammer_off_t result_offset
;
461 result_offset
= blockmap_lookup_save(offset
, &layer1
, &layer2
, &error
);
463 assert(HAMMER_ZONE_DECODE(offset
) == zone
);
464 assert(hammer_is_zone_raw_buffer(result_offset
));
467 collect
= collect_get(layer1
.phys_offset
); /* layer2 address */
468 track2
= collect_get_track(collect
, result_offset
, zone
, &layer2
);
469 track2
->bytes_free
-= length
;
474 collect_get(hammer_off_t phys_offset
)
478 collect
= RB_LOOKUP(collect_rb_tree
, &CollectTree
, phys_offset
);
482 collect
= calloc(1, sizeof(*collect
));
483 collect
->track2
= calloc(1, HAMMER_BIGBLOCK_SIZE
); /* 1<<23 bytes */
484 collect
->layer2
= calloc(1, HAMMER_BIGBLOCK_SIZE
); /* 1<<23 bytes */
485 collect
->offsets
= calloc(HAMMER_BLOCKMAP_RADIX2
, sizeof(hammer_off_t
));
486 collect
->phys_offset
= phys_offset
;
487 RB_INSERT(collect_rb_tree
, &CollectTree
, collect
);
494 collect_rel(collect_t collect
)
496 free(collect
->offsets
);
497 free(collect
->layer2
);
498 free(collect
->track2
);
503 hammer_blockmap_layer2_t
504 collect_get_track(collect_t collect
, hammer_off_t offset
, int zone
,
505 hammer_blockmap_layer2_t layer2
)
507 hammer_blockmap_layer2_t track2
;
510 i
= HAMMER_BLOCKMAP_LAYER2_INDEX(offset
);
511 track2
= &collect
->track2
[i
];
512 if (track2
->entry_crc
== 0) {
513 collect
->layer2
[i
] = *layer2
;
514 collect
->offsets
[i
] = offset
& ~HAMMER_BIGBLOCK_MASK64
;
516 track2
->bytes_free
= HAMMER_BIGBLOCK_SIZE
;
517 track2
->entry_crc
= 1; /* steal field to tag track load */
524 dump_collect_table(void)
528 struct zone_stat
*stats
= NULL
;
531 stats
= hammer_init_zone_stat();
533 RB_FOREACH(collect
, collect_rb_tree
, &CollectTree
) {
534 dump_collect(collect
, stats
);
535 error
+= collect
->error
;
538 while ((collect
= RB_ROOT(&CollectTree
)) != NULL
) {
539 RB_REMOVE(collect_rb_tree
, &CollectTree
, collect
);
540 collect_rel(collect
);
542 assert(RB_EMPTY(&CollectTree
));
545 hammer_print_zone_stat(stats
);
546 hammer_cleanup_zone_stat(stats
);
549 if (num_bad_node
|| VerboseOpt
)
550 printf("%d bad nodes\n", num_bad_node
);
551 if (error
|| VerboseOpt
)
552 printf("%d errors\n", error
);
557 dump_collect(collect_t collect
, struct zone_stat
*stats
)
559 hammer_blockmap_layer2_t track2
;
560 hammer_blockmap_layer2_t layer2
;
564 for (i
= 0; i
< HAMMER_BLOCKMAP_RADIX2
; ++i
) {
565 track2
= &collect
->track2
[i
];
566 layer2
= &collect
->layer2
[i
];
567 offset
= collect
->offsets
[i
];
570 * Check big-blocks referenced by freemap, data,
571 * B-Tree nodes and UNDO fifo.
573 if (track2
->entry_crc
== 0)
577 assert((layer2
->zone
== HAMMER_ZONE_UNDO_INDEX
) ||
578 (layer2
->zone
== HAMMER_ZONE_FREEMAP_INDEX
) ||
579 hammer_is_index_record(layer2
->zone
));
582 hammer_add_zone_stat_layer2(stats
, layer2
);
584 if (track2
->zone
!= layer2
->zone
) {
585 printf("BZ\tblock=%016jx calc zone=%-2d, got zone=%-2d\n",
590 } else if (track2
->bytes_free
!= layer2
->bytes_free
) {
591 printf("BM\tblock=%016jx zone=%-2d calc %d free, got %d\n",
597 } else if (VerboseOpt
) {
598 printf("\tblock=%016jx zone=%-2d %d free (correct)\n",