On Thu, Dec 20, 2018 at 03:38:01PM +0100, Didier Kryn wrote: > Le 20/12/2018 à 15:32, Arnt Karlsen a écrit : > > On Thu, 20 Dec 2018 00:59:35 +1100, Ralph wrote in message > > <c8fde44f-6df4-4e28-08a5-059b97887...@gmail.com>: > > > > > There is this notion of "kexec boot"; I've never tried it, but it's > > > documentation claims "kexec is a system call that enables you to > > > load and boot into another kernel from the currently running kernel." > > > > > > Maybe it comes with too many ifs and buts to be a viable approach. > > > > > > Ralph. > > ..I used to "kexec reboot" a lot in my pre-systemd Debian days, > > AFAIR, bought me nice long uptimes with new kernels. ;o) > > > What's the purpose of kexec ? I see one main: using a Linux session as > the bootloader, a bootloader more heavily customizable than Grub. > Additionally it saves a few seconds. Are there any other ?
Post-mortem on a crashed system: the second kernel can access the whole memory, etc. It can also bring you some "fun" when it turns out the machine can't boot from a cold start. Meow! -- ⢀⣴⠾⠻⢶⣦⠀ ⣾⠁⢠⠒⠀⣿⡁ Ivan was a worldly man: born in St. Petersburg, raised in ⢿⡄⠘⠷⠚⠋⠀ Petrograd, lived most of his life in Leningrad, then returned ⠈⠳⣄⠀⠀⠀⠀ to the city of his birth to die. _______________________________________________ Dng mailing list Dng@lists.dyne.org https://mailinglists.dyne.org/cgi-bin/mailman/listinfo/dng
