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I have installed Parallel file system "Lustre" along with this slide with RPM.

Have set node A, B.

  1. Installed mds and mdt to node A. Its mount was successful.

  2. But, After format oss to node B using mkfs.lustre, then I mounted it, but it began Infinite waiting. And it retrieve this error once 120 seconds.

    INFO: task mount.lustre:1541 blocked for more than 120 seconds. Not tainted 2.6.32-504.8.1.el6_lustre.x86_64 #1 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.

Why it occurs? Or can you give me better tutorial or experience? Its version of Lustre is 2.7.0.

Thanks a lot.

JosephH
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Jafffy
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1 Answers1

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It is a info message. As mentioned in the message, though you can echo 0 to "hung_task_timeout_secs" to disable the message from showing up but still I will not recommend it.

Try to lower the mark for flushing the cache from 40% to 10% by setting “vm.dirty_ratio=5″ & "vm.dirty_background_ratio=5" in /etc/sysctl.conf. Activate it by using sysctl -p command, there is no need to reboot the system.

Baban Gaigole
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