*** This bug is a duplicate of bug 785394 ***
https://bugs.launchpad.net/bugs/785394
Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: kexec-tools (Ubuntu)
Status: New => Confirmed
--
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to kexec-tools in Ubuntu.
https://bugs.launchpad.net/bugs/1235616
Title:
linux-crashdump doesn't actually dump and reboot
Status in “kexec-tools” package in Ubuntu:
Confirmed
Bug description:
In our infrastructure we have a large number of virtual machines running
Ubuntu 12.04 (and some that are running 10.04), as well as a couple of CentOS
machines.
From time to time they will panic and we'll be left with nothing but a
screenshot, which makes for poor debugging. I pushed forward to install
linux-crashdump (or crash on CentOS) by default.
Following this documentation on how to enable crash dumps:
https://help.ubuntu.com/lts/serverguide/kernel-crash-dump.html I've done the
testing myself, on both libvirt/qemu, virtualbox, but also on actual hardware
(my laptop, which is the yet unreleased running Ubuntu 13.04).
The results have been rather sobering. After initiating a panic, the machines
shows a back-trace and then just hangs. As the documentation says that the
crash-dump can take some time, I've left the machines for several hours in this
state with no change.
I've followed several cues, documenting my journey in this ask.ubuntu answer:
http://askubuntu.com/questions/310885/kernel-dump-using-linux-crashdump-under-vmware
— The testing on my own laptop has led to seeing the first bluescreen in over
ten years: http://i.imgur.com/oAwEJZ8.jpg
My final tests were with CentOS, since we only have a handful of machines
running CentOS I put a lower priority on testing/implementing that. However,
following RHEL's documentation (
https://access.redhat.com/site/documentation/en-US/Red_Hat_Enterprise_Linux/6/html/Deployment_Guide/ch-kdump.html
) I managed to get crash/dump/reboot and crashdump on the very first try.
By this token I'm assuming it's not entirely my fault or my systems' fault,
but perhaps is more specific to Debian.
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/kexec-tools/+bug/1235616/+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
