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_reblock.c,v 1.7 2008/06/14 01:44:11 dillon Exp $
39 static void reblock_usage(int exit_code);
42 * reblock <filesystem> [compaction_precentage] (default 90%)
45 hammer_cmd_reblock(char **av, int ac, int flags)
47 struct hammer_ioc_reblock reblock;
48 const char *filesystem;
52 bzero(&reblock, sizeof(reblock));
54 reblock.beg_localization = HAMMER_MIN_LOCALIZATION;
55 reblock.beg_obj_id = HAMMER_MIN_OBJID;
56 hammer_get_cycle(&reblock.beg_obj_id, &reblock.beg_localization);
58 reblock.end_localization = HAMMER_MAX_LOCALIZATION;
59 reblock.end_obj_id = HAMMER_MAX_OBJID;
61 reblock.head.flags = flags & HAMMER_IOC_DO_FLAGS;
64 * Restrict the localization domain if asked to do inodes or data,
67 switch(flags & (HAMMER_IOC_DO_INODES|HAMMER_IOC_DO_DATA|HAMMER_IOC_DO_DIRS)) {
68 case HAMMER_IOC_DO_INODES:
69 reblock.beg_localization = HAMMER_LOCALIZE_INODE;
70 reblock.end_localization = HAMMER_LOCALIZE_INODE;
72 case HAMMER_IOC_DO_DIRS:
73 case HAMMER_IOC_DO_DATA:
74 reblock.beg_localization = HAMMER_LOCALIZE_MISC;
75 reblock.end_localization = HAMMER_LOCALIZE_MISC;
85 perc = strtol(av[1], NULL, 0);
86 if (perc < 0 || perc > 100)
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);
96 fd = open(filesystem, O_RDONLY);
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",
104 reblock.cur_obj_id, reblock.cur_localization);
106 hammer_set_cycle(reblock.cur_obj_id,
107 reblock.cur_localization);
111 hammer_reset_cycle();
112 printf("Reblock %s succeeded\n", filesystem);
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
127 reblock_usage(int exit_code)
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");