Verified that panic is correctly set. However, as I tested on some environment running qemu, and qemu has changed the behavior of os-term RTAS call, we now need to fix it, otherwise, panic_timeout won't have the desired effect. Not on those environments, at least. There is a fix upstream already on the kernel side. I will open a new bug for that.
Thanks. Cascardo. ** Tags removed: verification-needed-artful verification-needed-xenial verification-needed-zesty ** Tags added: verification-done-artful verification-done-xenial verification-done-zesty -- 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/1730660 Title: Set PANIC_TIMEOUT=10 on Power Systems Status in linux package in Ubuntu: In Progress Status in linux source package in Xenial: Fix Committed Status in linux source package in Zesty: Fix Committed Status in linux source package in Artful: Fix Committed Bug description: [Impact] When stopping CPUs fail when doing kdump, the system will hang indefinitively, instead of rebooting. With this option set, it will reboot after 10 seconds when that happens. This setting has been the default for trusty, where panic_timeout is 10. Later releases set it to 0. [Test Case] When booting a kernel, /proc/sys/kernel/panic should be 10. It's 0 for xenial, zesty and artful. After the fix, it's 10. [Regression Potential] For users that rely on the setting as 0, they will see their system reboot 10 seconds after a panic. They can set it back to 0 or other value. Though, on some rare cases, the system might not boot enough for this setting to be set. Balancing that with the case where kdump is used and the system is expected to boot, we expect the 10 seconds setting is okay. === For ppc64le, in some rare crash cases, kdump won't load unless timeout is greater than 0. Only 10 has been tested by IBM, so using a smaller value may not work. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1730660/+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
