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

Dave Airlie
2015-02-23T00:18:58Z

On 23 February 2015 at 09:01, Andrew Morton <akpm@linux-foundation.org> wrote:
> On Sun, 22 Feb 2015 20:13:28 +0100 (CET) Jiri Kosina <jkosina@suse.cz> 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.

Dave.