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cmd_reblock.c
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cmd_reblock.c
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/*
* Copyright (c) 2008 The DragonFly Project. All rights reserved.
*
* This code is derived from software contributed to The DragonFly Project
* by Matthew Dillon <dillon@backplane.com>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name of The DragonFly Project nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific, prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $DragonFly: src/sbin/hammer/cmd_reblock.c,v 1.11 2008/07/16 00:53:48 thomas Exp $
*/
#include "hammer.h"
static void reblock_usage(int exit_code);
/*
* reblock <filesystem> [fill_percentage] (default 100%)
*/
void
hammer_cmd_reblock(char **av, int ac, int flags)
{
struct hammer_ioc_reblock reblock;
const char *filesystem;
int fd;
int perc;
if (TimeoutOpt > 0)
alarm(TimeoutOpt);
bzero(&reblock, sizeof(reblock));
reblock.key_beg.obj_id = HAMMER_MIN_OBJID;
reblock.key_end.obj_id = HAMMER_MAX_OBJID;
hammer_get_cycle(&reblock.key_beg, NULL);
reblock.head.flags = flags & HAMMER_IOC_DO_FLAGS;
reblock.allpfs = AllPFS;
reblock.vol_no = -1; /* Don't select a volume */
/*
* Restrict the localization domain if asked to do inodes or data,
* but not both. Note that using INODE or MISC for localization
* adds a limitation to reblock range of B-Tree node, if BTREE is
* used with INODES or (DATA and/or DIRS) but not both.
*/
switch(flags & (HAMMER_IOC_DO_INODES|HAMMER_IOC_DO_DATA|HAMMER_IOC_DO_DIRS)) {
case HAMMER_IOC_DO_INODES:
reblock.key_beg.localization = HAMMER_LOCALIZE_INODE;
reblock.key_end.localization = HAMMER_LOCALIZE_INODE;
break;
case HAMMER_IOC_DO_DATA:
case HAMMER_IOC_DO_DIRS:
case HAMMER_IOC_DO_DATA | HAMMER_IOC_DO_DIRS:
reblock.key_beg.localization = HAMMER_LOCALIZE_MISC;
reblock.key_end.localization = HAMMER_LOCALIZE_MISC;
break;
default:
reblock.key_beg.localization = HAMMER_MIN_LOCALIZATION;
reblock.key_end.localization = HAMMER_MAX_LOCALIZATION;
break;
}
if (ac == 0) {
reblock_usage(1);
/* not reached */
}
filesystem = av[0];
if (ac == 1) {
perc = 100;
} else {
perc = strtol(av[1], NULL, 0);
if (perc < 0 || perc > 100) {
reblock_usage(1);
/* not reached */
}
}
reblock.free_level = (int)((int64_t)perc *
HAMMER_BIGBLOCK_SIZE / 100);
reblock.free_level = HAMMER_BIGBLOCK_SIZE - reblock.free_level;
if (reblock.free_level < 0)
reblock.free_level = 0;
printf("reblock start %016jx:%04x\nfree level %d/%d\n",
(uintmax_t)reblock.key_beg.obj_id,
reblock.key_beg.localization,
reblock.free_level,
HAMMER_BIGBLOCK_SIZE);
fd = open(filesystem, O_RDONLY);
if (fd < 0) {
err(1, "Unable to open %s", filesystem);
/* not reached */
}
RunningIoctl = 1;
if (ioctl(fd, HAMMERIOC_REBLOCK, &reblock) < 0) {
printf("Reblock %s failed: %s\n", filesystem, strerror(errno));
} else if (reblock.head.flags & HAMMER_IOC_HEAD_INTR) {
printf("Reblock %s interrupted by timer at %016jx:%04x\n",
filesystem,
(uintmax_t)reblock.key_cur.obj_id,
reblock.key_cur.localization);
if (CyclePath)
hammer_set_cycle(&reblock.key_cur, 0);
} else {
if (CyclePath)
hammer_reset_cycle();
printf("Reblock %s succeeded\n", filesystem);
}
RunningIoctl = 0;
close(fd);
printf("Reblocked:\n"
" %jd/%jd B-Tree nodes\n"
" %jd/%jd B-Tree bytes\n"
" %jd/%jd data elements\n"
" %jd/%jd data bytes\n",
(intmax_t)reblock.btree_moves, (intmax_t)reblock.btree_count,
(intmax_t)(reblock.btree_moves *
sizeof(struct hammer_node_ondisk)),
(intmax_t)(reblock.btree_count *
sizeof(struct hammer_node_ondisk)),
(intmax_t)reblock.data_moves, (intmax_t)reblock.data_count,
(intmax_t)reblock.data_byte_moves,
(intmax_t)reblock.data_byte_count
);
}
static
void
reblock_usage(int exit_code)
{
fprintf(stderr, "hammer reblock <filesystem> [fill_percentage]\n");
fprintf(stderr, "hammer reblock-btree <filesystem> [fill_percentage]\n");
fprintf(stderr, "hammer reblock-inodes <filesystem> [fill_percentage]\n");
fprintf(stderr, "hammer reblock-dirs <filesystem> [fill_percentage]\n");
fprintf(stderr, "hammer reblock-data <filesystem> [fill_percentage]\n");
fprintf(stderr, "By default 100%% is used.\n");
exit(exit_code);
}