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_reblock.c,v 1.9 2008/06/26 04:07:57 dillon Exp $ 35 */ 36 37 #include "hammer.h" 38 39 static void reblock_usage(int exit_code); 40 41 /* 42 * reblock <filesystem> [compaction_precentage] (default 90%) 43 */ 44 void 45 hammer_cmd_reblock(char **av, int ac, int flags) 46 { 47 struct hammer_ioc_reblock reblock; 48 const char *filesystem; 49 int fd; 50 int perc; 51 52 bzero(&reblock, sizeof(reblock)); 53 54 reblock.key_beg.localization = HAMMER_MIN_LOCALIZATION; 55 reblock.key_beg.obj_id = HAMMER_MIN_OBJID; 56 hammer_get_cycle(&reblock.key_beg); 57 58 reblock.key_end.localization = HAMMER_MAX_LOCALIZATION; 59 reblock.key_end.obj_id = HAMMER_MAX_OBJID; 60 61 reblock.head.flags = flags & HAMMER_IOC_DO_FLAGS; 62 63 /* 64 * Restrict the localization domain if asked to do inodes or data, 65 * but not both. 66 */ 67 switch(flags & (HAMMER_IOC_DO_INODES|HAMMER_IOC_DO_DATA|HAMMER_IOC_DO_DIRS)) { 68 case HAMMER_IOC_DO_INODES: 69 reblock.key_beg.localization = HAMMER_LOCALIZE_INODE; 70 reblock.key_end.localization = HAMMER_LOCALIZE_INODE; 71 break; 72 case HAMMER_IOC_DO_DIRS: 73 case HAMMER_IOC_DO_DATA: 74 reblock.key_beg.localization = HAMMER_LOCALIZE_MISC; 75 reblock.key_end.localization = HAMMER_LOCALIZE_MISC; 76 break; 77 } 78 79 if (ac == 0) 80 reblock_usage(1); 81 filesystem = av[0]; 82 if (ac == 1) { 83 perc = 100; 84 } else { 85 perc = strtol(av[1], NULL, 0); 86 if (perc < 0 || perc > 100) 87 reblock_usage(1); 88 } 89 reblock.free_level = (int)((int64_t)perc * 90 HAMMER_LARGEBLOCK_SIZE / 100); 91 reblock.free_level = HAMMER_LARGEBLOCK_SIZE - reblock.free_level; 92 if (reblock.free_level < 0) 93 reblock.free_level = 0; 94 printf("reblock free level %d\n", reblock.free_level); 95 96 fd = open(filesystem, O_RDONLY); 97 if (fd < 0) 98 err(1, "Unable to open %s", filesystem); 99 if (ioctl(fd, HAMMERIOC_REBLOCK, &reblock) < 0) { 100 printf("Reblock %s failed: %s\n", filesystem, strerror(errno)); 101 } else if (reblock.head.flags & HAMMER_IOC_HEAD_INTR) { 102 printf("Reblock %s interrupted by timer at %016llx %04x\n", 103 filesystem, 104 reblock.key_cur.obj_id, 105 reblock.key_cur.localization); 106 if (CyclePath) { 107 hammer_set_cycle(&reblock.key_cur); 108 } 109 } else { 110 if (CyclePath) 111 hammer_reset_cycle(); 112 printf("Reblock %s succeeded\n", filesystem); 113 } 114 close(fd); 115 printf("Reblocked:\n" 116 " %lld/%lld btree nodes\n" 117 " %lld/%lld data elements\n" 118 " %lld/%lld data bytes\n", 119 reblock.btree_moves, reblock.btree_count, 120 reblock.data_moves, reblock.data_count, 121 reblock.data_byte_moves, reblock.data_byte_count 122 ); 123 } 124 125 static 126 void 127 reblock_usage(int exit_code) 128 { 129 fprintf(stderr, "hammer reblock <filesystem> [percentage]\n"); 130 fprintf(stderr, "hammer reblock-btree <filesystem> [percentage]\n"); 131 fprintf(stderr, "hammer reblock-inodes <filesystem> [percentage]\n"); 132 fprintf(stderr, "hammer reblock-dirs <filesystem> [percentage]\n"); 133 fprintf(stderr, "hammer reblock-data <filesystem> [percentage]\n"); 134 fprintf(stderr, "By default 90%% is used. Use 100%% to defragment\n"); 135 exit(exit_code); 136 } 137 138