Re: live kernel upgrades (was: live kernel patching design)

From: Dave Airlie
Date: Sun Feb 22 2015 - 19:19:23 EST

On 23 February 2015 at 09:01, Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> wrote:
> On Sun, 22 Feb 2015 20:13:28 +0100 (CET) Jiri Kosina <jkosina@xxxxxxx> wrote:
>> But if you ask the folks who are hungry for live bug patching, they
>> wouldn't care.
>> You mentioned "10 seconds", that's more or less equal to infinity to them.
> 10 seconds outage is unacceptable, but we're running our service on a
> single machine with no failover. Who is doing this??

if I had to guess, telcos generally, you've only got one wire between a phone
and the exchange and if the switch on the end needs patching it better be fast.

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