I will let you know. I did create a swap using the following command: sudo apt-get install dphys-swapfile sudo losetup /dev/loop0 /var/swap sudo swapon /dev/loop0
sysctl.conf is also modified based on: http://modis.ispras.ru/sedna/install.html The database name is static among all the clients, so a -data-file-init-size of 5000 (5G) is pre-created. This version will have the latest Ubuntu 12.04 (Precise Pangolin). The problem occurred again today with a different client. We have created hundreds of these instances in the last 3 months without an issue. The new client issue makes me think the problem is Amazon related. Thanks, Malcolm -----Original Message----- From: Ivan Shcheklein [mailto:[email protected]] Sent: Thursday, June 14, 2012 3:10 PM To: Malcolm Davis Cc: [email protected] Subject: Re: [Sedna-discussion] SEDNA: kernal unable to handle kernel paging request Fine. Let us know your results. BTW, do you use swap? How do you create it? On Thu, Jun 14, 2012 at 8:04 PM, Malcolm Davis <[email protected]> wrote: Hello Ivan, Thanks for the response. The bug is only reproducible on our Ubuntu SEDNA image. a. We have built a specialized SEDNA image from which new Amazon instances are created. b. Each of our clients gets their own SEDNA image. c. Only SEDNA runs on the image. 1 client fails on a fresh Amazon instance. We have tried 3-new Amazon instance with the same results. The client does not have unusually large files. (Some of our clients have 3 times the data). I will start by building a new SEDNA image with the latest Ubuntu build, and then retest. Thanks, Malcolm -----Original Message----- From: Ivan Shcheklein [mailto:[email protected]] Sent: Thursday, June 14, 2012 9:06 AM To: Malcolm Davis Cc: [email protected] Subject: Re: [Sedna-discussion] SEDNA: kernal unable to handle kernel paging request Hi Malcolm, "Jun 13 16:53:16 ip-10-244-165-112 kernel: [ 7133.235823] BUG: unable to handle kernel paging request at ffff8800113ace00" - is definitely bug in kernel/hardware/virtualization software, not in Sedna. Though, there is a small chance that some bug in Sedna initiates this. Have you tried to reproduce this on different machine (not on amazon)? Is it reproducible on another amazon machine? Do you use the latest amazon image, latest kernel? Ivan ------------------------------------------------------------------------------ Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ _______________________________________________ Sedna-discussion mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/sedna-discussion
