Linux排错:rpmdb: PANIC: fatal region error detected; run recovery

[hadoop@master ~]$ sudo rpm -ivh MySQL-server-5.6.20-1.el6.x86_64.rpm
rpmdb: PANIC: fatal region error detected; run recovery

安装mysql时候，提示rpmdb错误。google了一下centos的KB,解决思路如下:
需要清除rpm的database,保险起见，将/var/lib/rpm目录下的数据做个备份到/home/tmp里

[hadoop@master /]$ ls -l /var/lib/rpm/_*
-rw-r--r-- 1 root root   24576 Aug 22 00:13 /var/lib/rpm/__db.001
-rw-r--r-- 1 root root  229376 Aug 22 00:13 /var/lib/rpm/__db.002
-rw-r--r-- 1 root root 1318912 Aug 22 00:13 /var/lib/rpm/__db.003
-rw-r--r-- 1 root root  753664 Aug 22 00:13 /var/lib/rpm/__db.004

[hadoop@master home]$ sudo ls -l /var/lib/rpm/_*
-rw-r--r-- 1 root root   24576 Aug 22 00:13 /var/lib/rpm/__db.001
-rw-r--r-- 1 root root  229376 Aug 22 00:13 /var/lib/rpm/__db.002
-rw-r--r-- 1 root root 1318912 Aug 22 00:13 /var/lib/rpm/__db.003
-rw-r--r-- 1 root root  753664 Aug 22 00:13 /var/lib/rpm/__db.004
[hadoop@master home]$ sudo cp -avr /var/lib/rpm/ /home/tmp/

接着开始清理rmp db,如下

[hadoop@master ~]$ sudo ls -l /var/lib/rpm/_*
-rw-r--r-- 1 root root   24576 Aug 22 00:13 /var/lib/rpm/__db.001
-rw-r--r-- 1 root root  229376 Aug 22 00:13 /var/lib/rpm/__db.002
-rw-r--r-- 1 root root 1318912 Aug 22 00:13 /var/lib/rpm/__db.003
-rw-r--r-- 1 root root  753664 Aug 22 00:13 /var/lib/rpm/__db.004
[hadoop@master ~]$ sudo rm -f /var/lib/rpm/_*
[hadoop@master ~]$ sudo ls -l /var/lib/rpm/_*
ls: cannot access /var/lib/rpm/_*: No such file or directory

[hadoop@master ~]$ sudo db_verify /var/lib/rpm/Packages
db_verify: Page 7709: overflow page of invalid type 13
db_verify: Page 3828: page 6681 encountered a second time on free list
db_verify: /var/lib/rpm/Packages: DB_VERIFY_BAD: Database verification failed
[hadoop@master ~]$ sudo rpm --rebuilddb
error: rpmdbNextIterator: skipping h#     622 blob size(3816): BAD, 8 + 16 * il(0) + dl(0)
error: rpmdbNextIterator: skipping h#     622 blob size(3816): BAD, 8 + 16 * il(0) + dl(0)
[hadoop@master ~]$ sudo yum clean all
[hadoop@master ~]$ sudo yum update
#此处省去更新内容#
Total download size: 209 M
Is this ok [y/N]: y
#下载包并安装#

看过程这里把所有的包都又重装然后clean了一遍。但是rpm和yum功能也就正常了