1 /* 2 * Copyright (c) 2008 The DragonFly Project. All rights reserved. 3 * 4 * This code is derived from software contributed to The DragonFly Project 5 * by Matthew Dillon <dillon@backplane.com> 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 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 16 * distribution. 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. 20 * 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 32 * SUCH DAMAGE. 33 * 34 * $DragonFly: src/sbin/hammer/cmd_blockmap.c,v 1.4 2008/07/19 18:48:14 dillon Exp $ 35 */ 36 37 #include "hammer.h" 38 39 static void dump_blockmap(const char *label, int zone); 40 41 void 42 hammer_cmd_blockmap(void) 43 { 44 dump_blockmap("btree", HAMMER_ZONE_FREEMAP_INDEX); 45 #if 0 46 dump_blockmap("btree", HAMMER_ZONE_BTREE_INDEX); 47 dump_blockmap("meta", HAMMER_ZONE_META_INDEX); 48 dump_blockmap("large-data", HAMMER_ZONE_LARGE_DATA_INDEX); 49 dump_blockmap("small-data", HAMMER_ZONE_SMALL_DATA_INDEX); 50 #endif 51 } 52 53 #if 1 54 55 static 56 void 57 dump_blockmap(const char *label, int zone) 58 { 59 struct volume_info *root_volume; 60 hammer_blockmap_t rootmap; 61 struct hammer_blockmap_layer1 *layer1; 62 struct hammer_blockmap_layer2 *layer2; 63 struct buffer_info *buffer1 = NULL; 64 struct buffer_info *buffer2 = NULL; 65 hammer_off_t layer1_offset; 66 hammer_off_t layer2_offset; 67 hammer_off_t scan1; 68 hammer_off_t scan2; 69 int xerr; 70 71 assert(RootVolNo >= 0); 72 root_volume = get_volume(RootVolNo); 73 rootmap = &root_volume->ondisk->vol0_blockmap[zone]; 74 assert(rootmap->phys_offset != 0); 75 76 printf("zone %-16s next %016llx alloc %016llx\n", 77 label, rootmap->next_offset, rootmap->alloc_offset); 78 79 for (scan1 = HAMMER_ZONE_ENCODE(zone, 0); 80 scan1 < HAMMER_ZONE_ENCODE(zone, HAMMER_OFF_LONG_MASK); 81 scan1 += HAMMER_BLOCKMAP_LAYER2) { 82 /* 83 * Dive layer 1. 84 */ 85 layer1_offset = rootmap->phys_offset + 86 HAMMER_BLOCKMAP_LAYER1_OFFSET(scan1); 87 layer1 = get_buffer_data(layer1_offset, &buffer1, 0); 88 xerr = ' '; 89 if (layer1->layer1_crc != crc32(layer1, HAMMER_LAYER1_CRCSIZE)) 90 xerr = 'B'; 91 if (xerr == ' ' && 92 layer1->phys_offset == HAMMER_BLOCKMAP_UNAVAIL) { 93 continue; 94 } 95 printf("%c layer1 %016llx @%016llx blocks-free %lld\n", 96 xerr, scan1, layer1->phys_offset, layer1->blocks_free); 97 if (layer1->phys_offset == HAMMER_BLOCKMAP_FREE) 98 continue; 99 for (scan2 = scan1; 100 scan2 < scan1 + HAMMER_BLOCKMAP_LAYER2; 101 scan2 += HAMMER_LARGEBLOCK_SIZE 102 ) { 103 /* 104 * Dive layer 2, each entry represents a large-block. 105 */ 106 layer2_offset = layer1->phys_offset + 107 HAMMER_BLOCKMAP_LAYER2_OFFSET(scan2); 108 layer2 = get_buffer_data(layer2_offset, &buffer2, 0); 109 xerr = ' '; 110 if (layer2->entry_crc != crc32(layer2, HAMMER_LAYER2_CRCSIZE)) 111 xerr = 'B'; 112 printf("%c %016llx zone=%d app=%-7d free=%-7d\n", 113 xerr, 114 scan2, 115 layer2->zone, 116 layer2->append_off, 117 layer2->bytes_free); 118 } 119 } 120 if (buffer1) 121 rel_buffer(buffer1); 122 if (buffer2) 123 rel_buffer(buffer2); 124 rel_volume(root_volume); 125 } 126 127 #endif 128