The kernel in use (4.4.0.45) is quite outdated and roughly a year old: https://launchpad.net/ubuntu/xenial/s390x/linux-generic Please check if the problem also exists with latest kernel 4.4 (like today 4.4.0.101.106 or soon newer ...)
-- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1734691 Title: Got disk i/o failure when vary cpu offline via chcpu command (Ubuntu running on LPAR) Status in Ubuntu on IBM z Systems: New Status in linux package in Ubuntu: New Bug description: Got disk i/o failure when offline CPU via chcpu command ---uname output--- 4.4.0-45-generic #66-Ubuntu Machine Type = z13 - 2964 ---Debugger--- A debugger is not configured Contact Information = y...@cn.ibm.com Stack trace output: no Oops output: no System Dump Info: The system is not configured to capture a system dump. -Attach sysctl -a output output to the bug. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-z-systems/+bug/1734691/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
