启动mysql时报错误：Starting MySQL.The server quit without updating PID file (/var/lib/mysql/tserver.pid).[FAILED]

＃ less localhost.localdomain.err

160703 20:00:12 mysqld_safe Starting mysqld daemon with databases from /usr/local/var/mysql
2016-07-03T12:00:12.397109Z 0 [Warning] TIMESTAMP with implicit DEFAULT value is deprecated. Please use --explicit_defaults_for_timestamp server option (see documentation for more details).
2016-07-03T12:00:12.398333Z 0 [Warning] Insecure configuration for --secure-file-priv: Current value does not restrict location of generated files. Consider setting it to a valid, non-empty path.
2016-07-03T12:00:12.398884Z 0 [Note] /usr/local/Cellar/mysql/5.7.10/bin/mysqld (mysqld 5.7.10) starting as process 837 ...
2016-07-03T12:00:12.406560Z 0 [Warning] Setting lower_case_table_names=2 because file system for /usr/local/var/mysql/ is case insensitive
2016-07-03T12:00:12.413518Z 0 [Note] InnoDB: Mutexes and rw_locks use GCC atomic builtins
2016-07-03T12:00:12.413545Z 0 [Note] InnoDB: Uses event mutexes
2016-07-03T12:00:12.413550Z 0 [Note] InnoDB: GCC builtin __atomic_thread_fence() is used for memory barrier
2016-07-03T12:00:12.413556Z 0 [Note] InnoDB: Compressed tables use zlib 1.2.3
2016-07-03T12:00:12.414298Z 0 [Note] InnoDB: Number of pools: 1
2016-07-03T12:00:12.415508Z 0 [Note] InnoDB: Using CPU crc32 instructions
2016-07-03T12:00:12.424979Z 0 [Note] InnoDB: Initializing buffer pool, total size = 128M, instances = 1, chunk size = 128M
2016-07-03T12:00:12.437917Z 0 [Note] InnoDB: Completed initialization of buffer pool
2016-07-03T12:00:12.451096Z 0 [ERROR] InnoDB: The innodb_system data file ‘ibdata1‘ must be writable
2016-07-03T12:00:12.451136Z 0 [ERROR] InnoDB: The innodb_system data file ‘ibdata1‘ must be writable
2016-07-03T12:00:12.451189Z 0 [ERROR] InnoDB: Plugin initialization aborted with error Generic error
2016-07-03T12:00:12.754267Z 0 [ERROR] Plugin ‘InnoDB‘ init function returned error.
2016-07-03T12:00:12.754344Z 0 [ERROR] Plugin ‘InnoDB‘ registration as a STORAGE ENGINE failed.
2016-07-03T12:00:12.754370Z 0 [ERROR] Failed to initialize plugins.
2016-07-03T12:00:12.754377Z 0 [ERROR] Aborting

2016-07-03T12:00:12.754396Z 0 [Note] Binlog end
2016-07-03T12:00:12.756029Z 0 [Note] Shutting down plugin ‘CSV‘
2016-07-03T12:00:12.756511Z 0 [Note] /usr/local/Cellar/mysql/5.7.10/bin/mysqld: Shutdown complete

160703 20:00:12 mysqld_safe mysqld from pid file /usr/local/var/mysql/huangjicaideMacBook-Pro.local.pid ended