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Re: Issue with stopping VE in Ubuntu 8.04 [message #32628 is a reply to message #32619]

Wed, 20 August 2008 22:12

piavlo
Messages: 159
Registered: January 2007

Senior Member

First of all 2.6.24 is unstable branch, you can try more stable 2.6.18

Check if you have any processes which are in D state
(uninterruptable sleep) inside of VE or kernel threads (like events) which are also in D state.
IMHO this the MAIN HUGE problem with OpenVZ - once you get one of those D state processes you can stop the VE
also you actually can't stop the HN also. This happens a lot with
processes accessing nfs shares but only inside VE, while there are no problems with remote nfs server.
Once OpenVZ releases kernel 2.6.25+
this will be partially resolved, as there are new TASK_KILLABLE
state which allows processes in this state to be killed with SIGKILL, and nfs client code is already utilizing this new state, which will allow those VE to be stopped (only if the stuck processes are using TASK_KILLABLE sleep).

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[Message index]

		Issue with stopping VE in Ubuntu 8.04 By: nixgeek on Tue, 19 August 2008 17:20
		Re: Issue with stopping VE in Ubuntu 8.04 By: piavlo on Wed, 20 August 2008 22:12
		Re: Issue with stopping VE in Ubuntu 8.04 By: nixgeek on Thu, 21 August 2008 02:36
		Re: Issue with stopping VE in Ubuntu 8.04 By: nixgeek on Thu, 21 August 2008 02:51
		Re: Issue with stopping VE in Ubuntu 8.04 By: piavlo on Thu, 21 August 2008 11:25

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