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 1.8 2008/06/24 17:40:21 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
.key_beg
.localization
= HAMMER_MIN_LOCALIZATION
;
55 reblock
.key_beg
.obj_id
= HAMMER_MIN_OBJID
;
56 hammer_get_cycle(&reblock
.key_beg
.obj_id
,
57 &reblock
.key_beg
.localization
);
59 reblock
.key_end
.localization
= HAMMER_MAX_LOCALIZATION
;
60 reblock
.key_end
.obj_id
= HAMMER_MAX_OBJID
;
62 reblock
.head
.flags
= flags
& HAMMER_IOC_DO_FLAGS
;
65 * Restrict the localization domain if asked to do inodes or data,
68 switch(flags
& (HAMMER_IOC_DO_INODES
|HAMMER_IOC_DO_DATA
|HAMMER_IOC_DO_DIRS
)) {
69 case HAMMER_IOC_DO_INODES
:
70 reblock
.key_beg
.localization
= HAMMER_LOCALIZE_INODE
;
71 reblock
.key_end
.localization
= HAMMER_LOCALIZE_INODE
;
73 case HAMMER_IOC_DO_DIRS
:
74 case HAMMER_IOC_DO_DATA
:
75 reblock
.key_beg
.localization
= HAMMER_LOCALIZE_MISC
;
76 reblock
.key_end
.localization
= HAMMER_LOCALIZE_MISC
;
86 perc
= strtol(av
[1], NULL
, 0);
87 if (perc
< 0 || perc
> 100)
90 reblock
.free_level
= (int)((int64_t)perc
*
91 HAMMER_LARGEBLOCK_SIZE
/ 100);
92 reblock
.free_level
= HAMMER_LARGEBLOCK_SIZE
- reblock
.free_level
;
93 if (reblock
.free_level
< 0)
94 reblock
.free_level
= 0;
95 printf("reblock free level %d\n", reblock
.free_level
);
97 fd
= open(filesystem
, O_RDONLY
);
99 err(1, "Unable to open %s", filesystem
);
100 if (ioctl(fd
, HAMMERIOC_REBLOCK
, &reblock
) < 0) {
101 printf("Reblock %s failed: %s\n", filesystem
, strerror(errno
));
102 } else if (reblock
.head
.flags
& HAMMER_IOC_HEAD_INTR
) {
103 printf("Reblock %s interrupted by timer at %016llx %04x\n",
105 reblock
.key_cur
.obj_id
,
106 reblock
.key_cur
.localization
);
108 hammer_set_cycle(reblock
.key_cur
.obj_id
,
109 reblock
.key_cur
.localization
);
113 hammer_reset_cycle();
114 printf("Reblock %s succeeded\n", filesystem
);
117 printf("Reblocked:\n"
118 " %lld/%lld btree nodes\n"
119 " %lld/%lld data elements\n"
120 " %lld/%lld data bytes\n",
121 reblock
.btree_moves
, reblock
.btree_count
,
122 reblock
.data_moves
, reblock
.data_count
,
123 reblock
.data_byte_moves
, reblock
.data_byte_count
129 reblock_usage(int exit_code
)
131 fprintf(stderr
, "hammer reblock <filesystem> [percentage]\n");
132 fprintf(stderr
, "hammer reblock-btree <filesystem> [percentage]\n");
133 fprintf(stderr
, "hammer reblock-inodes <filesystem> [percentage]\n");
134 fprintf(stderr
, "hammer reblock-dirs <filesystem> [percentage]\n");
135 fprintf(stderr
, "hammer reblock-data <filesystem> [percentage]\n");
136 fprintf(stderr
, "By default 90%% is used. Use 100%% to defragment\n");