Take a look at bug 246175. Having multiple vcpus could be the cause instead of open-iscsi. If that is the case, please mark this bug as a duplicate.
-- [jaunty, intrepid] Hard system freeze using open-iscsi https://bugs.launchpad.net/bugs/309945 You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to open-iscsi in ubuntu. -- 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