[CentOS-devel] ksplice and CentOS

Fri Jul 22 04:50:45 UTC 2011
Dmitry E. Mikhailov <d.mikhailov at infocommunications.ru>

On Friday 22 July 2011 07:12, Cia Watson wrote:
> This tool is used to load a kernel in memory and reboot into
> the kernel loaded in memory using the kexec system call.
FIrst of all, kexec is not ksplice. kexec allows to reboot kernel without 
rebooting hardware, but it's still a reboot and a usual disruption of 
services associated with it. ksplice is a quite another thing. It allows to 
apply patches to an already running kernel with no disruption of services.

Second, kexec is included in CentOS already:
[tn at ibm2 cropgui]$ rpm -q kexec-tools

Not sure whether default CentOS kernels support kexec system call.

Best regards,
	Dmitry Mikhailov