几个小时前，Mysql关闭了我的生产服务器。我试图像往常一样用'service mysqld restart'重新启动它（我正在使用centos），但是：
MySQL守护程序无法启动。
在我的日志文件中，我有：
151125 10:53:10 mysqld_safe Starting mysqld daemon with databases from /var/lib/mysql
151125 10:53:10 InnoDB: Initializing buffer pool, size = 8.0M
151125 10:53:10 InnoDB: Completed initialization of buffer pool
151125 10:53:10 InnoDB: Started; log sequence number 0 6283559
01:53:10 UTC - mysqld got signal 11 ;
This could be because you hit a bug. It is also possible that this binary
or one of the libraries it was linked against is corrupt, improperly built,
or misconfigured. This error can also be caused by malfunctioning hardware.
We will try our best to scrape up some info that will hopefully help
diagnose the problem, but since we have already crashed,
something is definitely wrong and this may fail.
key_buffer_size=8384512
read_buffer_size=131072
max_used_connections=0
max_threads=151
thread_count=0
connection_count=0
It is possible that mysqld could use up to
key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 338336 K bytes of memory
Hope that's ok; if not, decrease some variables in the equation.
Thread pointer: 0x0
Attempting backtrace. You can use the following information to find out
where mysqld died. If you see no messages after this, something went
terribly wrong...
stack_bottom = 0 thread_stack 0x40000
/usr/libexec/mysqld(my_print_stacktrace+0x29) [0x8509b9]
/usr/libexec/mysqld(handle_fatal_signal+0x483) [0x6a3ef3]
/lib64/libpthread.so.0() [0x3e59e0f790]
The manual page at http://dev.mysql.com/doc/mysql/en/crashing.html contains
information that should help you find out what is causing the crash.
151125 10:53:10 mysqld_safe mysqld from pid file /var/run/mysqld/mysqld.pid ended
我每秒钟都在失去潜在客户，所以我将非常感谢您的帮助，谢谢
编辑
问题解决了！我的分区已满：
# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/sda1 15G 15G 0M 100% /
我删除了一些无用的备份/日志文件并重新启动mysql。 谢谢