blob: dc024a2c38740e07bbb652c9c48a1dbb943d54df [file] [log] [blame]
/*
* Copyright (C) 2007 Oracle. All rights reserved.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public
* License v2 as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public
* License along with this program; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 021110-1307, USA.
*/
#include <stdio.h>
#include <stdlib.h>
#include <signal.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include "kerncompat.h"
#include "radix-tree.h"
#include "ctree.h"
#include "disk-io.h"
#include "print-tree.h"
#include "hash.h"
#include "transaction.h"
int keep_running = 1;
struct btrfs_super_block super;
static u64 dir_oid = 0;
static u64 file_oid = 33778;
static int find_num(struct radix_tree_root *root, unsigned long *num_ret,
int exists)
{
unsigned long num = rand();
unsigned long res[2];
int ret;
again:
ret = radix_tree_gang_lookup(root, (void **)res, num, 2);
if (exists) {
if (ret == 0)
return -1;
num = res[0];
} else if (ret != 0 && num == res[0]) {
num++;
if (ret > 1 && num == res[1]) {
num++;
goto again;
}
}
*num_ret = num;
return 0;
}
static void initial_inode_init(struct btrfs_root *root,
struct btrfs_inode_item *inode_item)
{
memset(inode_item, 0, sizeof(*inode_item));
btrfs_set_inode_generation(inode_item, root->fs_info->generation);
btrfs_set_inode_mode(inode_item, S_IFREG | 0700);
}
static int ins_one(struct btrfs_trans_handle *trans, struct btrfs_root *root,
struct radix_tree_root *radix)
{
int ret;
char buf[128];
unsigned long oid;
u64 objectid;
struct btrfs_path path;
struct btrfs_key inode_map;
struct btrfs_inode_item inode_item;
find_num(radix, &oid, 0);
sprintf(buf, "str-%lu", oid);
ret = btrfs_find_free_objectid(trans, root, dir_oid + 1, &objectid);
if (ret)
goto error;
inode_map.objectid = objectid;
inode_map.flags = 0;
btrfs_set_key_type(&inode_map, BTRFS_INODE_ITEM_KEY);
inode_map.offset = 0;
initial_inode_init(root, &inode_item);
ret = btrfs_insert_inode(trans, root, objectid, &inode_item);
if (ret)
goto error;
ret = btrfs_insert_dir_item(trans, root, buf, strlen(buf), dir_oid,
&inode_map, BTRFS_FT_UNKNOWN);
if (ret)
goto error;
radix_tree_preload(GFP_KERNEL);
ret = radix_tree_insert(radix, oid, (void *)oid);
radix_tree_preload_end();
if (ret)
goto error;
return ret;
error:
if (ret != -EEXIST)
goto fatal;
/*
* if we got an EEXIST, it may be due to hash collision, double
* check
*/
btrfs_init_path(&path);
ret = btrfs_lookup_dir_item(trans, root, &path, dir_oid, buf,
strlen(buf), 0);
if (ret)
goto fatal_release;
if (!btrfs_match_dir_item_name(root, &path, buf, strlen(buf))) {
struct btrfs_dir_item *di;
char *found;
u32 found_len;
u64 myhash;
u64 foundhash;
di = btrfs_item_ptr(&path.nodes[0]->leaf, path.slots[0],
struct btrfs_dir_item);
found = (char *)(di + 1);
found_len = btrfs_dir_name_len(di);
btrfs_name_hash(buf, strlen(buf), &myhash);
btrfs_name_hash(found, found_len, &foundhash);
if (myhash != foundhash)
goto fatal_release;
btrfs_release_path(root, &path);
return 0;
}
fatal_release:
btrfs_release_path(root, &path);
fatal:
printf("failed to insert %lu ret %d\n", oid, ret);
return -1;
}
static int insert_dup(struct btrfs_trans_handle *trans, struct btrfs_root
*root, struct radix_tree_root *radix)
{
int ret;
char buf[128];
unsigned long oid;
struct btrfs_key key;
ret = find_num(radix, &oid, 1);
if (ret < 0)
return 0;
sprintf(buf, "str-%lu", oid);
key.objectid = file_oid;
key.flags = 0;
btrfs_set_key_type(&key, BTRFS_INODE_ITEM_KEY);
key.offset = 0;
ret = btrfs_insert_dir_item(trans, root, buf, strlen(buf), dir_oid,
&key, BTRFS_FT_UNKNOWN);
if (ret != -EEXIST) {
printf("insert on %s gave us %d\n", buf, ret);
return 1;
}
return 0;
}
static int del_dir_item(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
struct radix_tree_root *radix,
unsigned long radix_index,
struct btrfs_path *path)
{
int ret;
unsigned long *ptr;
u64 file_objectid;
struct btrfs_dir_item *di;
/* find the inode number of the file */
di = btrfs_item_ptr(&path->nodes[0]->leaf, path->slots[0],
struct btrfs_dir_item);
file_objectid = btrfs_disk_key_objectid(&di->location);
/* delete the directory item */
ret = btrfs_del_item(trans, root, path);
if (ret)
goto out_release;
btrfs_release_path(root, path);
/* delete the inode */
btrfs_init_path(path);
ret = btrfs_lookup_inode(trans, root, path, file_objectid, -1);
if (ret)
goto out_release;
ret = btrfs_del_item(trans, root, path);
if (ret)
goto out_release;
btrfs_release_path(root, path);
if (root->fs_info->last_inode_alloc > file_objectid)
root->fs_info->last_inode_alloc = file_objectid;
ptr = radix_tree_delete(radix, radix_index);
if (!ptr) {
ret = -5555;
goto out;
}
return 0;
out_release:
btrfs_release_path(root, path);
out:
printf("failed to delete %lu %d\n", radix_index, ret);
return -1;
}
static int del_one(struct btrfs_trans_handle *trans, struct btrfs_root *root,
struct radix_tree_root *radix)
{
int ret;
char buf[128];
unsigned long oid;
struct btrfs_path path;
ret = find_num(radix, &oid, 1);
if (ret < 0)
return 0;
sprintf(buf, "str-%lu", oid);
btrfs_init_path(&path);
ret = btrfs_lookup_dir_item(trans, root, &path, dir_oid, buf,
strlen(buf), -1);
if (ret)
goto out_release;
ret = del_dir_item(trans, root, radix, oid, &path);
if (ret)
goto out_release;
return ret;
out_release:
btrfs_release_path(root, &path);
printf("failed to delete %lu %d\n", oid, ret);
return -1;
}
static int lookup_item(struct btrfs_trans_handle *trans, struct btrfs_root
*root, struct radix_tree_root *radix)
{
struct btrfs_path path;
char buf[128];
int ret;
unsigned long oid;
u64 objectid;
struct btrfs_dir_item *di;
ret = find_num(radix, &oid, 1);
if (ret < 0)
return 0;
sprintf(buf, "str-%lu", oid);
btrfs_init_path(&path);
ret = btrfs_lookup_dir_item(trans, root, &path, dir_oid, buf,
strlen(buf), 0);
if (!ret) {
di = btrfs_item_ptr(&path.nodes[0]->leaf, path.slots[0],
struct btrfs_dir_item);
objectid = btrfs_disk_key_objectid(&di->location);
}
btrfs_release_path(root, &path);
if (ret) {
printf("unable to find key %lu\n", oid);
return -1;
}
return 0;
}
static int lookup_enoent(struct btrfs_trans_handle *trans, struct btrfs_root
*root, struct radix_tree_root *radix)
{
struct btrfs_path path;
char buf[128];
int ret;
unsigned long oid;
ret = find_num(radix, &oid, 0);
if (ret < 0)
return 0;
sprintf(buf, "str-%lu", oid);
btrfs_init_path(&path);
ret = btrfs_lookup_dir_item(trans, root, &path, dir_oid, buf,
strlen(buf), 0);
btrfs_release_path(root, &path);
if (!ret) {
printf("able to find key that should not exist %lu\n", oid);
return -1;
}
return 0;
}
static int empty_tree(struct btrfs_trans_handle *trans, struct btrfs_root
*root, struct radix_tree_root *radix, int nr)
{
struct btrfs_path path;
struct btrfs_key key;
unsigned long found = 0;
u32 found_len;
int ret;
int slot;
int count = 0;
char buf[128];
struct btrfs_dir_item *di;
key.offset = (u64)-1;
key.flags = 0;
btrfs_set_key_type(&key, BTRFS_DIR_ITEM_KEY);
key.objectid = dir_oid;
while(nr-- >= 0) {
btrfs_init_path(&path);
ret = btrfs_search_slot(trans, root, &key, &path, -1, 1);
if (ret < 0) {
btrfs_release_path(root, &path);
return ret;
}
if (ret != 0) {
if (path.slots[0] == 0) {
btrfs_release_path(root, &path);
break;
}
path.slots[0] -= 1;
}
slot = path.slots[0];
di = btrfs_item_ptr(&path.nodes[0]->leaf, slot,
struct btrfs_dir_item);
found_len = btrfs_dir_name_len(di);
memcpy(buf, (char *)(di + 1), found_len);
BUG_ON(found_len > 128);
buf[found_len] = '\0';
found = atoi(buf + 4);
ret = del_dir_item(trans, root, radix, found, &path);
count++;
if (ret) {
fprintf(stderr,
"failed to remove %lu from tree\n",
found);
return -1;
}
if (!keep_running)
break;
}
return 0;
fprintf(stderr, "failed to delete from the radix %lu\n", found);
return -1;
}
static int fill_tree(struct btrfs_trans_handle *trans, struct btrfs_root *root,
struct radix_tree_root *radix, int count)
{
int i;
int ret = 0;
for (i = 0; i < count; i++) {
ret = ins_one(trans, root, radix);
if (ret) {
fprintf(stderr, "fill failed\n");
goto out;
}
if (i % 1000 == 0) {
ret = btrfs_commit_transaction(trans, root, &super);
if (ret) {
fprintf(stderr, "fill commit failed\n");
return ret;
}
}
if (i && i % 10000 == 0) {
printf("bigfill %d\n", i);
}
if (!keep_running)
break;
}
out:
return ret;
}
static int bulk_op(struct btrfs_trans_handle *trans, struct btrfs_root *root,
struct radix_tree_root *radix)
{
int ret;
int nr = rand() % 5000;
static int run_nr = 0;
/* do the bulk op much less frequently */
if (run_nr++ % 100)
return 0;
ret = empty_tree(trans, root, radix, nr);
if (ret)
return ret;
ret = fill_tree(trans, root, radix, nr);
if (ret)
return ret;
return 0;
}
int (*ops[])(struct btrfs_trans_handle *trans, struct btrfs_root *root, struct
radix_tree_root *radix) =
{ ins_one, insert_dup, del_one, lookup_item,
lookup_enoent, bulk_op };
void sigstopper(int ignored)
{
keep_running = 0;
fprintf(stderr, "caught exit signal, stopping\n");
}
int print_usage(void)
{
printf("usage: tester [-ih] [-c count] [-f count]\n");
printf("\t -c count -- iteration count after filling\n");
printf("\t -f count -- run this many random inserts before starting\n");
printf("\t -i -- only do initial fill\n");
printf("\t -h -- this help text\n");
exit(1);
}
int main(int ac, char **av)
{
RADIX_TREE(radix, GFP_KERNEL);
struct btrfs_root *root;
int i;
int ret;
int count;
int op;
int iterations = 20000;
int init_fill_count = 800000;
int err = 0;
int initial_only = 0;
struct btrfs_trans_handle *trans;
radix_tree_init();
root = open_ctree(av[ac-1], &super);
trans = btrfs_start_transaction(root, 1);
dir_oid = btrfs_super_root_dir(&super);
signal(SIGTERM, sigstopper);
signal(SIGINT, sigstopper);
for (i = 1 ; i < ac - 1; i++) {
if (strcmp(av[i], "-i") == 0) {
initial_only = 1;
} else if (strcmp(av[i], "-c") == 0) {
iterations = atoi(av[i+1]);
i++;
} else if (strcmp(av[i], "-f") == 0) {
init_fill_count = atoi(av[i+1]);
i++;
} else {
print_usage();
}
}
printf("initial fill\n");
ret = fill_tree(trans, root, &radix, init_fill_count);
printf("starting run\n");
if (ret) {
err = ret;
goto out;
}
if (initial_only == 1) {
goto out;
}
for (i = 0; i < iterations; i++) {
op = rand() % ARRAY_SIZE(ops);
count = rand() % 128;
if (i % 2000 == 0) {
printf("%d\n", i);
fflush(stdout);
}
if (i && i % 5000 == 0) {
printf("open & close, root level %d nritems %d\n",
btrfs_header_level(&root->node->node.header),
btrfs_header_nritems(&root->node->node.header));
close_ctree(root, &super);
root = open_ctree("dbfile", &super);
}
while(count--) {
ret = ops[op](trans, root, &radix);
if (ret) {
fprintf(stderr, "op %d failed %d:%d\n",
op, i, iterations);
btrfs_print_tree(root, root->node);
fprintf(stderr, "op %d failed %d:%d\n",
op, i, iterations);
err = ret;
goto out;
}
if (ops[op] == bulk_op)
break;
if (keep_running == 0) {
err = 0;
goto out;
}
}
}
out:
close_ctree(root, &super);
return err;
}