22 Jul
2011
22 Jul
'11
4:50 a.m.
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@ibm2 cropgui]$ rpm -q kexec-tools kexec-tools-1.102pre-96.el5_5.4
Not sure whether default CentOS kernels support kexec system call.
Best regards, Dmitry Mikhailov