* Boston, MA 021110-1307, USA.
*/
-#include <ctype.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <fcntl.h>
-#include <sys/stat.h>
-#include <sys/time.h>
-#include <sys/types.h>
-#include <zlib.h>
-#include "kerncompat.h"
-#include "ctree.h"
-#include "disk-io.h"
-#include "print-tree.h"
-#include "transaction.h"
-#include "list.h"
#include "volumes.h"
#include "utils.h"
-
-static int verbose = 0;
-static int no_pretty = 0;
-
-struct seek {
- u64 distance;
- u64 count;
- struct rb_node n;
-};
-
-struct root_stats {
- u64 total_nodes;
- u64 total_leaves;
- u64 total_bytes;
- u64 total_inline;
- u64 total_seeks;
- u64 forward_seeks;
- u64 backward_seeks;
- u64 total_seek_len;
- u64 max_seek_len;
- u64 total_clusters;
- u64 total_cluster_size;
- u64 min_cluster_size;
- u64 max_cluster_size;
- u64 lowest_bytenr;
- u64 highest_bytenr;
- struct rb_root seek_root;
- int total_levels;
-};
-
-struct fs_root {
- struct btrfs_key key;
- struct btrfs_key *snaps;
-};
-
-static int add_seek(struct rb_root *root, u64 dist)
-{
- struct rb_node **p = &root->rb_node;
- struct rb_node *parent = NULL;
- struct seek *seek = NULL;
-
- while (*p) {
- parent = *p;
- seek = rb_entry(parent, struct seek, n);
-
- if (dist < seek->distance) {
- p = &(*p)->rb_left;
- } else if (dist > seek->distance) {
- p = &(*p)->rb_right;
- } else {
- seek->count++;
- return 0;
- }
- }
-
- seek = malloc(sizeof(struct seek));
- if (!seek)
- return -ENOMEM;
- seek->distance = dist;
- seek->count = 1;
- rb_link_node(&seek->n, parent, p);
- rb_insert_color(&seek->n, root);
- return 0;
-}
-
-static int walk_leaf(struct btrfs_root *root, struct btrfs_path *path,
- struct root_stats *stat, int find_inline)
-{
- struct extent_buffer *b = path->nodes[0];
- struct btrfs_file_extent_item *fi;
- struct btrfs_key found_key;
- int i;
-
- stat->total_bytes += root->leafsize;
- stat->total_leaves++;
-
- if (!find_inline)
- return 0;
-
- for (i = 0; i < btrfs_header_nritems(b); i++) {
- btrfs_item_key_to_cpu(b, &found_key, i);
- if (found_key.type != BTRFS_EXTENT_DATA_KEY)
- continue;
-
- fi = btrfs_item_ptr(b, i, struct btrfs_file_extent_item);
- if (btrfs_file_extent_type(b, fi) == BTRFS_FILE_EXTENT_INLINE)
- stat->total_inline +=
- btrfs_file_extent_inline_item_len(b,
- btrfs_item_nr(i));
- }
-
- return 0;
-}
-
-static u64 calc_distance(u64 block1, u64 block2)
-{
- if (block1 < block2)
- return block2 - block1;
- return block1 - block2;
-}
-
-static int walk_nodes(struct btrfs_root *root, struct btrfs_path *path,
- struct root_stats *stat, int level, int find_inline)
-{
- struct extent_buffer *b = path->nodes[level];
- u64 last_block;
- u64 cluster_size = root->leafsize;
- int i;
- int ret = 0;
-
- stat->total_bytes += root->nodesize;
- stat->total_nodes++;
-
- last_block = btrfs_header_bytenr(b);
- for (i = 0; i < btrfs_header_nritems(b); i++) {
- struct extent_buffer *tmp = NULL;
- u64 cur_blocknr = btrfs_node_blockptr(b, i);
-
- path->slots[level] = i;
- if ((level - 1) > 0 || find_inline) {
- tmp = read_tree_block(root, cur_blocknr,
- btrfs_level_size(root, level - 1),
- btrfs_node_ptr_generation(b, i));
- if (!extent_buffer_uptodate(tmp)) {
- fprintf(stderr, "Failed to read blocknr %Lu\n",
- btrfs_node_blockptr(b, i));
- continue;
- }
- path->nodes[level - 1] = tmp;
- }
- if (level - 1)
- ret = walk_nodes(root, path, stat, level - 1,
- find_inline);
- else
- ret = walk_leaf(root, path, stat, find_inline);
- if (last_block + root->leafsize != cur_blocknr) {
- u64 distance = calc_distance(last_block +
- root->leafsize,
- cur_blocknr);
- stat->total_seeks++;
- stat->total_seek_len += distance;
- if (stat->max_seek_len < distance)
- stat->max_seek_len = distance;
- if (add_seek(&stat->seek_root, distance)) {
- fprintf(stderr, "Error adding new seek\n");
- ret = -ENOMEM;
- break;
- }
-
- if (last_block < cur_blocknr)
- stat->forward_seeks++;
- else
- stat->backward_seeks++;
- if (cluster_size != root->leafsize) {
- stat->total_cluster_size += cluster_size;
- stat->total_clusters++;
- if (cluster_size < stat->min_cluster_size)
- stat->min_cluster_size = cluster_size;
- if (cluster_size > stat->max_cluster_size)
- stat->max_cluster_size = cluster_size;
- }
- cluster_size = root->leafsize;
- } else {
- cluster_size += root->leafsize;
- }
- last_block = cur_blocknr;
- if (cur_blocknr < stat->lowest_bytenr)
- stat->lowest_bytenr = cur_blocknr;
- if (cur_blocknr > stat->highest_bytenr)
- stat->highest_bytenr = cur_blocknr;
- free_extent_buffer(tmp);
- if (ret) {
- fprintf(stderr, "Error walking down path\n");
- break;
- }
- }
-
- return ret;
-}
-
-static void print_seek_histogram(struct root_stats *stat)
-{
- struct rb_node *n = rb_first(&stat->seek_root);
- struct seek *seek;
- u64 tick_interval;
- u64 group_start = 0;
- u64 group_count = 0;
- u64 group_end = 0;
- u64 i;
- u64 max_seek = stat->max_seek_len;
- int digits = 1;
-
- if (stat->total_seeks < 20)
- return;
-
- while ((max_seek /= 10))
- digits++;
-
- /* Make a tick count as 5% of the total seeks */
- tick_interval = stat->total_seeks / 20;
- printf("\tSeek histogram\n");
- for (; n; n = rb_next(n)) {
- u64 ticks, gticks = 0;
-
- seek = rb_entry(n, struct seek, n);
- ticks = seek->count / tick_interval;
- if (group_count)
- gticks = group_count / tick_interval;
-
- if (ticks <= 2 && gticks <= 2) {
- if (group_count == 0)
- group_start = seek->distance;
- group_end = seek->distance;
- group_count += seek->count;
- continue;
- }
-
- if (group_count) {
-
- gticks = group_count / tick_interval;
- printf("\t\t%*Lu - %*Lu: %*Lu ", digits, group_start,
- digits, group_end, digits, group_count);
- if (gticks) {
- for (i = 0; i < gticks; i++)
- printf("#");
- printf("\n");
- } else {
- printf("|\n");
- }
- group_count = 0;
- }
-
- if (ticks <= 2)
- continue;
-
- printf("\t\t%*Lu - %*Lu: %*Lu ", digits, seek->distance,
- digits, seek->distance, digits, seek->count);
- for (i = 0; i < ticks; i++)
- printf("#");
- printf("\n");
- }
- if (group_count) {
- u64 gticks;
-
- gticks = group_count / tick_interval;
- printf("\t\t%*Lu - %*Lu: %*Lu ", digits, group_start,
- digits, group_end, digits, group_count);
- if (gticks) {
- for (i = 0; i < gticks; i++)
- printf("#");
- printf("\n");
- } else {
- printf("|\n");
- }
- group_count = 0;
- }
-}
-
-static void timeval_subtract(struct timeval *result,struct timeval *x,
- struct timeval *y)
-{
- if (x->tv_usec < y->tv_usec) {
- int nsec = (y->tv_usec - x->tv_usec) / 1000000 + 1;
- y->tv_usec -= 1000000 * nsec;
- y->tv_sec += nsec;
- }
-
- if (x->tv_usec - y->tv_usec > 1000000) {
- int nsec = (x->tv_usec - y->tv_usec) / 1000000;
- y->tv_usec += 1000000 * nsec;
- y->tv_sec -= nsec;
- }
-
- result->tv_sec = x->tv_sec - y->tv_sec;
- result->tv_usec = x->tv_usec - y->tv_usec;
-}
-
-static int calc_root_size(struct btrfs_root *tree_root, struct btrfs_key *key,
- int find_inline)
-{
- struct btrfs_root *root;
- struct btrfs_path *path;
- struct rb_node *n;
- struct timeval start, end, diff = {0};
- struct root_stats stat;
- int level;
- int ret = 0;
- int size_fail = 0;
-
- root = btrfs_read_fs_root(tree_root->fs_info, key);
- if (IS_ERR(root)) {
- fprintf(stderr, "Failed to read root %Lu\n", key->objectid);
- return 1;
- }
-
- path = btrfs_alloc_path();
- if (!path) {
- fprintf(stderr, "Could not allocate path\n");
- return 1;
- }
-
- memset(&stat, 0, sizeof(stat));
- level = btrfs_header_level(root->node);
- stat.lowest_bytenr = btrfs_header_bytenr(root->node);
- stat.highest_bytenr = stat.lowest_bytenr;
- stat.min_cluster_size = (u64)-1;
- stat.max_cluster_size = root->leafsize;
- path->nodes[level] = root->node;
- if (gettimeofday(&start, NULL)) {
- fprintf(stderr, "Error getting time: %d\n", errno);
- goto out;
- }
- if (!level) {
- ret = walk_leaf(root, path, &stat, find_inline);
- if (ret)
- goto out;
- goto out_print;
- }
-
- ret = walk_nodes(root, path, &stat, level, find_inline);
- if (ret)
- goto out;
- if (gettimeofday(&end, NULL)) {
- fprintf(stderr, "Error getting time: %d\n", errno);
- goto out;
- }
- timeval_subtract(&diff, &end, &start);
-out_print:
- if (stat.min_cluster_size == (u64)-1) {
- stat.min_cluster_size = 0;
- stat.total_clusters = 1;
- }
-
- if (no_pretty || size_fail) {
- printf("\tTotal size: %Lu\n", stat.total_bytes);
- printf("\t\tInline data: %Lu\n", stat.total_inline);
- printf("\tTotal seeks: %Lu\n", stat.total_seeks);
- printf("\t\tForward seeks: %Lu\n", stat.forward_seeks);
- printf("\t\tBackward seeks: %Lu\n", stat.backward_seeks);
- printf("\t\tAvg seek len: %llu\n", stat.total_seeks ?
- stat.total_seek_len / stat.total_seeks : 0);
- print_seek_histogram(&stat);
- printf("\tTotal clusters: %Lu\n", stat.total_clusters);
- printf("\t\tAvg cluster size: %Lu\n", stat.total_cluster_size /
- stat.total_clusters);
- printf("\t\tMin cluster size: %Lu\n", stat.min_cluster_size);
- printf("\t\tMax cluster size: %Lu\n", stat.max_cluster_size);
- printf("\tTotal disk spread: %Lu\n", stat.highest_bytenr -
- stat.lowest_bytenr);
- printf("\tTotal read time: %d s %d us\n", (int)diff.tv_sec,
- (int)diff.tv_usec);
- printf("\tLevels: %d\n", level + 1);
- } else {
- printf("\tTotal size: %s\n", pretty_size(stat.total_bytes));
- printf("\t\tInline data: %s\n", pretty_size(stat.total_inline));
- printf("\tTotal seeks: %Lu\n", stat.total_seeks);
- printf("\t\tForward seeks: %Lu\n", stat.forward_seeks);
- printf("\t\tBackward seeks: %Lu\n", stat.backward_seeks);
- printf("\t\tAvg seek len: %s\n", stat.total_seeks ?
- pretty_size(stat.total_seek_len / stat.total_seeks) :
- pretty_size(0));
- print_seek_histogram(&stat);
- printf("\tTotal clusters: %Lu\n", stat.total_clusters);
- printf("\t\tAvg cluster size: %s\n",
- pretty_size((stat.total_cluster_size /
- stat.total_clusters)));
- printf("\t\tMin cluster size: %s\n",
- pretty_size(stat.min_cluster_size));
- printf("\t\tMax cluster size: %s\n",
- pretty_size(stat.max_cluster_size));
- printf("\tTotal disk spread: %s\n",
- pretty_size(stat.highest_bytenr -
- stat.lowest_bytenr));
- printf("\tTotal read time: %d s %d us\n", (int)diff.tv_sec,
- (int)diff.tv_usec);
- printf("\tLevels: %d\n", level + 1);
- }
-out:
- while ((n = rb_first(&stat.seek_root)) != NULL) {
- struct seek *seek = rb_entry(n, struct seek, n);
- rb_erase(n, &stat.seek_root);
- free(seek);
- }
-
- /*
- * We only use path to save node data in iterating,
- * without holding eb's ref_cnt in path.
- * Don't use btrfs_free_path() here, it will free these
- * eb again, and cause many problems, as negative ref_cnt
- * or invalid memory access.
- */
- free(path);
- return ret;
-}
-
-static void usage(void)
-{
- fprintf(stderr, "Usage: calc-size [-v] [-b] <device>\n");
-}
+#include "commands.h"
+#include "help.h"
int main(int argc, char **argv)
{
- struct btrfs_key key;
- struct fs_root *roots;
- struct btrfs_root *root;
- size_t fs_roots_size = sizeof(struct fs_root);
- int opt;
- int ret = 0;
-
- while ((opt = getopt(argc, argv, "vb")) != -1) {
- switch (opt) {
- case 'v':
- verbose++;
- break;
- case 'b':
- no_pretty = 1;
- break;
- default:
- usage();
- exit(1);
- }
- }
-
- set_argv0(argv);
- argc = argc - optind;
- if (check_argc_min(argc, 1)) {
- usage();
- exit(1);
- }
+ int ret;
- /*
- if ((ret = check_mounted(argv[optind])) < 0) {
- fprintf(stderr, "Could not check mount status: %d\n", ret);
- if (ret == -EACCES)
- fprintf(stderr, "Maybe you need to run as root?\n");
- return ret;
- } else if (ret) {
- fprintf(stderr, "%s is currently mounted. Aborting.\n",
- argv[optind]);
- return -EBUSY;
- }
- */
+ warning(
+"\nthe tool has been deprecated, please use 'btrfs inspect-internal tree-stats' instead\n");
- root = open_ctree(argv[optind], 0, 0);
- if (!root) {
- fprintf(stderr, "Couldn't open ctree\n");
- exit(1);
- }
+ if (argc > 1 && !strcmp(argv[1], "--help"))
+ usage(cmd_inspect_tree_stats_usage);
- roots = malloc(fs_roots_size);
- if (!roots) {
- fprintf(stderr, "No memory\n");
- goto out;
- }
+ ret = cmd_inspect_tree_stats(argc, argv);
- printf("Calculating size of root tree\n");
- key.objectid = BTRFS_ROOT_TREE_OBJECTID;
- ret = calc_root_size(root, &key, 0);
- if (ret)
- goto out;
-
- printf("Calculating size of extent tree\n");
- key.objectid = BTRFS_EXTENT_TREE_OBJECTID;
- ret = calc_root_size(root, &key, 0);
- if (ret)
- goto out;
-
- printf("Calculating size of csum tree\n");
- key.objectid = BTRFS_CSUM_TREE_OBJECTID;
- ret = calc_root_size(root, &key, 0);
- if (ret)
- goto out;
-
- roots[0].key.objectid = BTRFS_FS_TREE_OBJECTID;
- roots[0].key.offset = (u64)-1;
- printf("Calculatin' size of fs tree\n");
- ret = calc_root_size(root, &roots[0].key, 1);
- if (ret)
- goto out;
-out:
- close_ctree(root);
- free(roots);
btrfs_close_all_devices();
+
return ret;
}
projects / platform / upstream / btrfs-progs.git / blobdiff