[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-users] kexec: "Crash kernel" no longer in /proc/iomem on 2.6.32?
Hello, I tried to setup kexec / kdump on a (crashing) Xen-3.4.3 system, but didn't get it working. The dom0 Kernel is a Debian-derived linux-2.6.32.48 custom build. kexec comlains with the following error message: > Memory for crashkernel is not reserved > Please reserve memory by passing "crashkernel=X@Y" parameter to the kernel > Then try loading kdump kernel But I passed "crashkernel=512M@2048M" to xen.gv in /boot/grub/menu.lst and the following command confirms this: # xm dmesg | grep Kdump (XEN) Kdump: 512MB (524288kB) at 0x80000000 Reading the source code of kexec-tools-2.0.1 I see that it is checking /proc/iomem for the string "Crash kernel", which is not present, also no "Hypervisor code and data". <http://xenbits.xen.org/hg/xen-3.4-testing.hg/file/d0b8738f6e9f/docs/misc/kexec_and_kdump.txt> tells it should, as do other pages on the web. Grepping the Linux Kernel and the xen source for that string didn't find any hit for that string outside said document. Is the kexec / kdump functionality for the Xen hypervisor in combination with a linux-2.6.32 kernel still functional, or is this a now defunc relict from the 2.6.18 days? Thanks in advance. Sincerely Philipp -- Philipp Hahn Open Source Software Engineer hahn@xxxxxxxxxxxxx Univention GmbH Linux for Your Business fon: +49 421 22 232- 0 Mary-Somerville-Str.1 D-28359 Bremen fax: +49 421 22 232-99 http://www.univention.de/ Attachment:
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