# is this config file disabled(配置文件是否生效)

# false for enabled(false生效)

# true for disabled(true不生效)

disabled = false

# bind an address of this host

# empty for bind all addresses of this host

#是否绑定IP如果一个服务器上有多个IP则设置哪个IP可用, 如果不设置则不限制

bind_addr =

# the tracker server port(tracker服务端口)

port = 22122

# connect timeout in seconds

# default value is 30

# Note: in the intranet network (LAN), 2 seconds is enough.

# 网络连接超时时间

connect_timeout = 5

# network timeout in seconds for send and recv

# default value is 30

# 网络接收和发送数据超时时间

network_timeout = 60

# the base path to store data and log files

#tracker基础数据存储路径及日志存放路径

base_path = /usr/local/fastdfs/storage01

# max concurrent connections this server support

# you should set this parameter larger, eg. 10240

# default value is 256

#最大连接/并发数

max_connections = 1024

# accept thread count

# default value is 1 which is recommended

# since V4.07

#接收线程数(处理建立连接的线程), 推荐使用1

accept_threads = 1

# work thread count

# work threads to deal network io

# default value is 4

# since V2.00

#工作线程数(做文件访问调度和负载均衡的线程), 最好和cpu核数保持一致

work_threads = 4

# the min network buff size

# default value 8KB

#最小的网络缓存字节数

min_buff_size = 8KB

# the max network buff size

# default value 128KB

#最大的网络缓存字节数

max_buff_size = 128KB

# the method for selecting group to upload files

# 0: round robin

# 1: specify group

# 2: load balance, select the max free space group to upload file

#选择上传文件组的模式: 0轮询组; 1指定组; 2负载均衡, 选择最大空闲空间组

store_lookup = 2

# which group to upload file

# when store_lookup set to 1, must set store_group to the group name

#上传文件组名, 如果store_lookup模式为1, 则必须设置成和特定group一致的组名

store_group = group2

# which storage server to upload file

# 0: round robin (default)

# 1: the first server order by ip address

# 2: the first server order by priority (the minimal)

# Note: if use_trunk_file set to true, must set store_server to 1 or 2

#选择存储服务器: 0代表轮询; 1根据通过ip地址排序; 2通过优先级排序

store_server = 0

# which path (means disk or mount point) of the storage server to upload file

# 0: round robin

# 2: load balance, select the max free space path to upload file

#选择路径存放文件: 0轮询; 2负载均衡, 选择空闲空间最大的路径去上传文件

store_path = 0

# which storage server to download file

# 0: round robin (default)

# 1: the source storage server which the current file uploaded to

#选择哪台存储服务器下载文件: 0轮询, 1文件上传到的原储存服务器

download_server = 0

# reserved storage space for system or other applications.

# if the free(available) space of any stoarge server in

# a group <= reserved_storage_space, no file can be uploaded to this group.

# bytes unit can be one of follows:

### G or g for gigabyte(GB)

### M or m for megabyte(MB)

### K or k for kilobyte(KB)

### no unit for byte(B)

### XX.XX% as ratio such as: reserved_storage_space = 10%

#系统保留空间

reserved_storage_space = 20%

#standard log level as syslog, case insensitive, value list:

### emerg for emergency

### alert

### crit for critical

### error

### warn for warning

### notice

### info

### debug

#日志级别

log_level = info

#unix group name to run this program,

#not set (empty) means run by the group of current user

#指定运行该程序的系统(unix)用户组名

run_by_group=

#unix username to run this program,

#not set (empty) means run by current user

#指定运行该程序的系统(unix)用户名, 没有设置, 使用启动进程的用户

run_by_user =

# allow_hosts can ocur more than once, host can be hostname or ip address,

# "*" (only one asterisk) means match all ip addresses

# we can use CIDR ips like 192.168.5.64/26

# and also use range like these: 10.0.1.[0-254] and host[01-08,20-25].domain.com

# for example:

# allow_hosts=10.0.1.[1-15,20]

# allow_hosts=host[01-08,20-25].domain.com

# allow_hosts=192.168.5.64/26

#允许和tracker服务器建立连接的ip范围

allow_hosts = *

# sync log buff to disk every interval seconds

# default value is 10 seconds

#同步或刷新日志信息到硬盘的时间间隔。

sync_log_buff_interval = 1

# check storage server alive interval seconds

#检测存储服务器存活的时间间隔

check_active_interval = 120

# thread stack size, should >= 64KB

# default value is 256KB

#tracker server线程栈的大小

thread_stack_size = 256KB

# auto adjust when the ip address of the storage server changed

# default value is true

#这个参数控制当storage server IP地址改变时, 集群是否自动调整。注: 只有在storage server进程重启时才完成自动调整。

storage_ip_changed_auto_adjust = true

# storage sync file max delay seconds

# default value is 86400 seconds (one day)

# since V2.00

#同组storage服务器同步文件的延迟时间

storage_sync_file_max_delay = 86400

# the max time of storage sync a file

# default value is 300 seconds

# since V2.00

#同步一个文件消耗的最大时间

storage_sync_file_max_time = 300

# if use a trunk file to store several small files

# default value is false

# since V3.00

#是否使用小文件合并存储特性

use_trunk_file = false

# the min slot size, should <= 4KB

# default value is 256 bytes

# since V3.00

#trunk file的最小字节数

slot_min_size = 256

# the max slot size, should > slot_min_size

# store the upload file to trunk file when it's size <=  this value

# default value is 16MB

# since V3.00

#trunk file的最大字节数, 如果文件大小小于该值, 则使用小文件存储特性方式存储

slot_max_size = 1MB

# the alignment size to allocate the trunk space

# default value is 0 (never align)

# since V6.05

# NOTE: the larger the alignment size, the less likely of disk

#       fragmentation, but the more space is wasted.

#分配trunk空间的字节对齐大小

trunk_alloc_alignment_size = 256

# if merge contiguous free spaces of trunk file

# default value is false

# since V6.05

#是否合并trunk file的连续空闲空间

trunk_free_space_merge = true

# if delete / reclaim the unused trunk files

# default value is false

# since V6.05

#删除没有使用的trunk file

delete_unused_trunk_files = false

# the trunk file size, should >= 4MB

# default value is 64MB

# since V3.00

#trunk file的大小

trunk_file_size = 64MB

# if create trunk file advancely

# default value is false

# since V3.06

#是否提前创建好trunk文件

trunk_create_file_advance = false

# the time base to create trunk file

# the time format: HH:MM

# default value is 02:00

# since V3.06

#创建trunk file的起始时间点, 当前为凌晨2点开始

trunk_create_file_time_base = 02:00

# the interval of create trunk file, unit: second

# default value is 38400 (one day)

# since V3.06

#提前创建trunk file的时间间隔, 默认为1天

trunk_create_file_interval = 86400

# the threshold to create trunk file

# when the free trunk file size less than the threshold,

# will create he trunk files

# default value is 0

# since V3.06

#提前创建trunk file时, 需要达到的空闲trunk大小

#例如: 当前配置为20G, 现在空闲的trunk file大小为4G, 那么只创建16G的trunk file  

trunk_create_file_space_threshold = 20G

# if check trunk space occupying when loading trunk free spaces

# the occupied spaces will be ignored

# default value is false

# since V3.09

# NOTICE: set this parameter to true will slow the loading of trunk spaces

# when startup. you should set this parameter to true when neccessary.

#trunk file初始化时, 是否检查可用空间是否被占用  

trunk_init_check_occupying = false