Make it configurable to enable/disable the check? Or even the size. For labs etc you might not have or want that much to spare.
Erik Den lørdag 29. august 2015 skrev Josh Harshman <josh.harsh...@intrinium.com> følgende: > Wido - > Looks like the problem resides in the logic that does the detection of the > host resources. It looks like most, if not all, the KVM host detection > occurs in the LibvirtComputingResource class. Here I can modify it so it > will take the value stored in dom0MinMem into account when calculating the > ram available. > > I've forked the repo and am working on a fix. > Does anyone have anything to add? Suggestions? > > ________________________________________ > From: Wido den Hollander <w...@widodh.nl <javascript:;>> > Sent: Friday, August 28, 2015 12:38 AM > To: dev@cloudstack.apache.org <javascript:;> > Subject: Re: Discuss reserving memory on KVM hypervisors ref: > CLOUDSTACK-8678 > > > > Josh Harshman > Cloud Engineer > > Intrinium > > On 27-08-15 18:36, Josh Harshman wrote: > > In a KVM cluster, CloudStack sees 100% of the compute node's RAM and > treats it as allocatable space which eventually leads to OOM killing guests. > > > > > > There is an agent property named host.reserved.mem.mb which is able to > be set in the agent.properties file and passed to the management server. > This value is stored as dom0MinMem, however, it appears to be ignored. > > > > > > If we could tweak the host capacity calculation and have it take this > into account, I believe that would be ideal. > > > > > > Side note: the variable dom0MinMem is declared as an int and can be > overflowed. Suggested change would be make it a long and add a check > especially if we are going to make this a configurable parameter. > > > > > > Yes, that seems like a sane thing to do. We should be able to say that > eg 8GB of memory should stay available for the HV. > > Don't know where the problem lies though. A PR is welcome :) > > Wido > > > > > > > Josh Harshman > > > > Cloud Engineer > > > > > > Intrinium > > Tel: (509) 465-1234 x5259 > > Fax: (866) 565-4578 > > Lync / Skype: josh.harsh...@intrinium.com <javascript:;> > > Web: http://intrinium.com<http://intrinium.com/> > > > > > > [Intrinium Long Sig Logo]<http://intrinium.com/> > > > > > > [Facebook]<http://www.facebook.com/pages/intrinium/154891544582822> > [Twitter] <http://twitter.com/intrinium> [Linkedin] < > http://www.linkedin.com/company/intrinium_networks_it_security?trk=fc_badge> > [Youtube] <http://www.youtube.com/user/intrinium> [Blog] < > http://intrinium.com/blog/> > > > > Information Security and Compliance Consulting | Managed IT and Security > Services | Cloud Services > > > > > > > > > > > > ________________________________ > > > > This email and any files transmitted with it are confidential and > intended solely for the use of the individual or entity to whom they are > addressed. If you have received this email in error please notify the > system manager. This message contains confidential information and is > intended only for the individual named. If you are not the named addressee > you should not disseminate, distribute or copy this e-mail. Please notify > the sender immediately by e-mail if you have received this e-mail by > mistake and delete this e-mail from your system. If you are not the > intended recipient you are notified that disclosing, copying, distributing > or taking any action in reliance on the contents of this information is > strictly prohibited. > > >
