It seems that when I upload a new image, or cloning that involves heavy disk activity (I/O) which causing the lag and lock-ups. I googled and found out that Ubuntu default I/O scheduling is using CFQ.
May I know how OpenNebula admin manage the resources? I mean do admin let the user create the image and uploads it using Sunstone? If so, does other user encounter any lags if other user uploads a big image? How is it actually, the real case scenario for cloud service provider to provide an efficient service? I really appreciate for any suggestions Thank you On Thu, Sep 5, 2013 at 4:34 PM, Mohammad Fazli Ahmat Jalaluddin < [email protected]> wrote: > Yes, I still experiencing the issue. > I really think that the problem is my network since I am using NFS for the > data transfer. > > If I deploy a Persistent image, the deployment time would be fast. > Most of my image is using persistent and it has no problem at all > > If I deploy a non-persistant image, the deployment time would be slow. > This holds true as non-persistent image would be copy to hypervisor and > this is my problem. > For a non-persistent image of 8Gb, it would take about 1/2 hour to deploy > (from prolog to running) > While deploying, the sunstone server seems slow other people who want to > login also takes much longer time > > > On Mon, Sep 2, 2013 at 9:46 PM, Daniel Molina <[email protected]>wrote: > >> Hi, >> >> >> On 15 August 2013 06:25, Mohammad Fazli Ahmat Jalaluddin < >> [email protected]> wrote: >> >>> Hi, >>> >>> Sorry for late reply since it is holiday season in my country. >>> >>> I think the issue maybe due to NFS configuration (using NFSv3) and also >>> some other minor things such as upgrading ruby version and so on. >>> >>> I happened to see you post this suggested solutions while you were >>> helping another user: >>> >>> This error appears when the browser cannot contact the sunstone-server >>> or the request takes more than expected and the timeout is reached. To >>> improve the response time: >>> * [sunstone-oned] Is the connection between sunstone-server and >>> oned fast? >>> * [sunstone] Check if the nokogiri gem is installed in the physical >>> machine where sunstone-server is running, if it's not installed rexml >>> will be used by default (a bit slower) >>> * [sunstone] Using ruby 1.9 instead of 1.8 >>> * [sunstone] By default sunstone-server runs using the thin server, >>> in a production environment it's recommended to use passenger + >>> apache/nginx instead. [1] >>> * [oned] Use mysql instead of sqlite as oned backend. [2] >>> >>> >>> Currently my deployment is installed with nokogiri gem, using mysql as >>> backend, using ruby 1.8, and running on thin server. >>> >>> I will try your suggested solution. >>> >>> Also, how to know is the connection between sunstone-server and oned >>> fast? Since in my deployment, both reside in the same server. >>> >> >> If both services are in the same machine, it should be fast. Are you >> still experiencing this issue? >> >> Cheers >> >> >>> Thank you. >>> >>> Regards >>> >>> >>> On Mon, Aug 5, 2013 at 2:36 PM, Daniel Molina <[email protected]>wrote: >>> >>>> Hi, >>>> >>>> >>>> On 1 August 2013 02:11, Mohammad Fazli Ahmat Jalaluddin < >>>> [email protected]> wrote: >>>> >>>>> Hi, >>>>> >>>>> Thanks for the reply. >>>>> >>>>> I have enough space on disk. >>>>> It's just the server seems not responding when I upload any image >>>>> files or deploy non-persistent image files. >>>>> >>>>> When I was using 3.8.3, the error comes something like this: "error: >>>>> execution expired" >>>>> >>>> >>>> Are you still experiencing this issue? If so, could you please open a >>>> ticket in our dev page so we can take a look into it >>>> >>>> http://dev.opennebula.org/ >>>> >>>> Cheers >>>> >>>> >>>>> >>>>> Thank you >>>>> >>>>> Regards, >>>>> Fazli >>>>> >>>>> >>>>> >>>>> >>>>> On Mon, Jul 29, 2013 at 5:46 PM, Daniel Molina <[email protected] >>>>> > wrote: >>>>> >>>>>> Hi, >>>>>> >>>>>> >>>>>> On 29 July 2013 08:17, Mohammad Fazli Ahmat Jalaluddin < >>>>>> [email protected]> wrote: >>>>>> >>>>>>> Hello all, >>>>>>> >>>>>>> I'm using OpenNebula 4.0.1, and I configured the filesystem using >>>>>>> NFS. >>>>>>> >>>>>>> After I try to upload a 500Gb image file, after some time, several >>>>>>> error message comes out and after that, the browser logs out >>>>>>> and when I'm want to login back, I got this error message >>>>>>> >>>>>>> "No answer from server. Is it running?" >>>>>>> >>>>>>> Is it natural? >>>>>>> >>>>>>> The problem is actually, when a user want to access their VM via >>>>>>> sunstone, they cannot access if other user try to upload a huge size of >>>>>>> image. >>>>>>> So, somehow it defeats the purpose of having Cloud. >>>>>>> >>>>>>> Is there any method to overcome this problem? >>>>>>> >>>>>> >>>>>> Do you have enough space in your disk? When uploading images through >>>>>> Sunstone temp files will be stored in /var/tmp and then moved to the >>>>>> given >>>>>> datastore. >>>>>> >>>>>> You can change this directory in the sunstone-server.conf: >>>>>> # Directory to store temp files when uploading images >>>>>> # >>>>>> :tmpdir: /var/tmp >>>>>> >>>>>> Hope this helps >>>>>> >>>>>> >>>>>>> >>>>>>> Thank you very much for helping me. >>>>>>> >>>>>>> Regards, >>>>>>> Fazli >>>>>>> _______________________________________________ >>>>>>> Users mailing list >>>>>>> [email protected] >>>>>>> http://lists.opennebula.org/listinfo.cgi/users-opennebula.org >>>>>>> >>>>>>> >>>>>> >>>>>> >>>>>> -- >>>>>> Join us at OpenNebulaConf2013 <http://opennebulaconf.com/> in >>>>>> Berlin, 24-26 September, 2013 >>>>>> -- >>>>>> Daniel Molina >>>>>> Project Engineer >>>>>> OpenNebula - The Open Source Solution for Data Center Virtualization >>>>>> www.OpenNebula.org | [email protected] | @OpenNebula >>>>>> >>>>> >>>>> >>>> >>>> >>>> -- >>>> Join us at OpenNebulaConf2013 <http://opennebulaconf.com/> in Berlin, >>>> 24-26 September, 2013 >>>> -- >>>> Daniel Molina >>>> Project Engineer >>>> OpenNebula - The Open Source Solution for Data Center Virtualization >>>> www.OpenNebula.org | [email protected] | @OpenNebula >>>> >>> >>> >> >> >> -- >> Join us at OpenNebulaConf2013 <http://opennebulaconf.com/> in Berlin, >> 24-26 September, 2013 >> -- >> Daniel Molina >> Project Engineer >> OpenNebula - The Open Source Solution for Data Center Virtualization >> www.OpenNebula.org | [email protected] | @OpenNebula >> > >
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