As far as I know, everyone who has experienced this has been using a thinkpad. I've first experienced this myself last week, on a new thinkpad running utopic.
Two curious things I noticed, beside this being a thinkpad: 1. I could not start the VM with the bad image at all. Until I rebooted. Then the image was fine, and fsck-clean. This suggests a possible problem with the page cache on the host. 2. I then disabled KSM. I have not seen this problem since then, however I also have not hit a vm quite as hard yet. Will have to see whether a series of package builds manages to make this happen again with KSM disabled. -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to qemu in Ubuntu. https://bugs.launchpad.net/bugs/1292234 Title: qcow2 image corruption in trusty (qemu 1.7 and 2.0 candidate) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/qemu/+bug/1292234/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs