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 1.4 2008/05/11 20:44:44 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) 46 { 47 struct hammer_ioc_reblock reblock; 48 const char *filesystem; 49 int fd; 50 int perc; 51 52 bzero(&reblock, sizeof(reblock)); 53 reblock.beg_obj_id = hammer_get_cycle(HAMMER_MIN_OBJID); 54 reblock.end_obj_id = HAMMER_MAX_OBJID; 55 56 if (ac == 0) 57 reblock_usage(1); 58 filesystem = av[0]; 59 if (ac == 1) { 60 perc = 90; 61 } else { 62 perc = strtol(av[1], NULL, 0); 63 if (perc < 0 || perc > 100) 64 reblock_usage(1); 65 } 66 reblock.free_level = perc * (HAMMER_LARGEBLOCK_SIZE / 100); 67 reblock.free_level = HAMMER_LARGEBLOCK_SIZE - reblock.free_level; 68 if (reblock.free_level < 128) 69 reblock.free_level = 128; 70 printf("reblock free level %d\n", reblock.free_level); 71 72 fd = open(filesystem, O_RDONLY); 73 if (fd < 0) 74 err(1, "Unable to open %s", filesystem); 75 if (ioctl(fd, HAMMERIOC_REBLOCK, &reblock) < 0) { 76 printf("Reblock %s failed: %s\n", filesystem, strerror(errno)); 77 } else if (reblock.head.flags & HAMMER_IOC_HEAD_INTR) { 78 printf("Reblock %s interrupted by timer at %016llx\n", 79 filesystem, reblock.cur_obj_id); 80 if (CyclePath) 81 hammer_set_cycle(reblock.cur_obj_id); 82 } else { 83 if (CyclePath) 84 hammer_reset_cycle(); 85 printf("Reblock %s succeeded\n", filesystem); 86 } 87 close(fd); 88 printf("Reblocked:\n" 89 " %lld/%lld btree nodes\n" 90 " %lld/%lld records\n" 91 " %lld/%lld data elements\n" 92 " %lld/%lld data bytes\n", 93 reblock.btree_moves, reblock.btree_count, 94 reblock.record_moves, reblock.record_count, 95 reblock.data_moves, reblock.data_count, 96 reblock.data_byte_moves, reblock.data_byte_count 97 ); 98 } 99 100 static 101 void 102 reblock_usage(int exit_code) 103 { 104 fprintf(stderr, "hammer reblock <filesystem> [percentage] " 105 "(default 90)\n"); 106 exit(exit_code); 107 } 108 109