Mysql 数据库崩溃，需要帮助恢复吗

我尝试重新启动，但出现以下错误：

错误！找不到MySQL服务器PID文件！ 正在启动MySQL。错误！服务器在不更新PID文件（/var/lib/mysql/www.mysitecom.PID）的情况下退出

看看日志。。请看一大堆：

140502 14:10:24 InnoDB: The InnoDB memory heap is disabled
140502 14:10:24 InnoDB: Mutexes and rw_locks use GCC atomic builtins
140502 14:10:24 InnoDB: Compressed tables use zlib 1.2.3
140502 14:10:24 InnoDB: Using Linux native AIO
140502 14:10:24 InnoDB: Initializing buffer pool, size = 128.0M
140502 14:10:24 InnoDB: Completed initialization of buffer pool
140502 14:10:24 InnoDB: highest supported file format is Barracuda.
InnoDB: The log sequence number in ibdata files does not match
InnoDB: the log sequence number in the ib_logfiles!
140502 14:10:24  InnoDB: Database was not shut down normally!
InnoDB: Starting crash recovery.
InnoDB: Reading tablespace information from the .ibd files...
InnoDB: Error: trying to add tablespace 12 of name './roundcube/searches.ibd'
InnoDB: to the tablespace memory cache, but tablespace
InnoDB: 12 of name './d6nspw4f_dell/wp_users.ibd' already exists in the tablespace
InnoDB: memory cache!

通过向sql配置文件中添加

innodb\u force\u recovery=4

可以重新启动，但所有接触数据库的站点现在都已损坏，无法写入

当我尝试对所有表执行mysql转储时，会出现以下错误：

mysqldump: Got error: 1146: Table 'x3hmcpl_hmcpl.blocked_ips' doesn't exist when using LOCK TABLES

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任何帮助都将不胜感激。我们这里没有数据库管理员，我一直在努力尽快修复它。

innodb\u force\u recovery=4

将innodb置于只读模式，它不应该修复损坏的innodb表空间

转储所有数据库（mysqldump-a>mydb.sql）并重新创建MySQL datadir。

检查此线程，它可能会对您有所帮助。