Ksplice: kernel patches without reboots
Posted May 1, 2008 0:22 UTC (Thu) by gdt
In reply to: Ksplice: kernel patches without reboots
Parent article: Ksplice: kernel patches without reboots
any system like this should be isolated anyway
In practice that's increasingly difficult. Datasets are growing so large that the last thing you want is two copies of them, so you end up with the input data being remotely hosted and pulled across the Internet on demand. It's this sort of use that the academic community created the Internet for.
The other problem with scientific computing is simply that I might not want to reboot the system at this moment. Imagine that I've concurrently booked four radiotelescopes, which is about a six-month wait. I've got them streaming into my processing cluster. A security patch arrives. If I apply the patch and reboot then I lose resolution, and thus my experiment may be inconclusive. If I don't apply the patch and the machine is subverted then there are data integrity issues and again the experiment is inconclusive. In both cases I wait another six months and try again. My favoured choice would be to apply the patch whilst still running the telescope correlation.
I'm not saying the ksplice is the best thing since sliced bread. But it does have some use, particularly outside of the typical server application that Linux is generally used for.
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