嘻嘻哈哈的部落格(blog)

一台服务器
32位的系统
2.6+的kernel
mysql为5.0.x版本
从别处拷过来一个库的数据文件
其中有好些都是4个G左右的文件
然后重启mysql的时候起不来
发现挂在myisamchk那里
k掉myisamchk进程
手工去掉–silent参数执行
发现报警告：

myisamchk: warning: Datafile is almost full, 4294967284 of 4294967294 used

用下面命令查了下这个index文件：
# myisamchk -dv deadlink.MYI
发现输出：

MyISAM file: deadlink.MYI
Record format: Packed
Character set: latin1_swedish_ci (8)
File-version: 1
Creation time: 2005-10-14 1:59:45
Recover time: 2005-11-21 8:22:40
Status: open,changed
Data records: 22090591 Deleted blocks: 0
Datafile parts: 52483933 Deleted data: 0
Datafile pointer (bytes): 4 Keyfile pointer (bytes): 4
Datafile length: 4294967284 Keyfile length: 2733665280
Max datafile length: 4294967294 Max keyfile length: 4398046510079
Recordlength: 53

table description:
Key Start Len Index Type Rec/key Root Blocksize
1 2 32 unique char packed stripped 1 390373376 1024
2 48 1 multip. binary NULL 2817245 61083648 1024
3 49 4 multip. unsigned long 1 1840502784 1024
4 49 4 multip. unsigned long 1 572611584 1024
44 4 long 1
5 44 4 multip. long 41430 633276416 1024
49 4 unsigned long 1

然后又翻了翻mysql文档
发现这个Max datafile length是可以改的
可以通过alter table tablename MAX_ROWS=1000000000 AVG_ROW_LENGTH=nnn;来修改