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系统变为无响应状态并产生以下信息 "INFO: task <process>:<pid> blocked for more than 120 seconds".

Solution Verified - Updated -

Issue

  • 在系统变为无响应前，/var/log/messages 中记录了以下信息：
INFO: task <process>:<pid> blocked for more than 120 seconds
  • 是什么原因导致产生上面的信息？在对这个问题进行故障排除时需要什么信息？

Environment

  • Red Hat Enterprise Linux (RHEL) 5.5 (kernel-2.6.18-194) 或更高版本
  • Red Hat Enterprise Linux (RHEL) 6
  • Red Hat Enterprise Linux (RHEL) 7
  • 进程处于无法中断的睡眠状态 (D state)

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