Date: Thu, 10 Mar 2016 17:53:15 +0000 From: Arthur Chance <freebsd@qeng-ho.org> To: krad <kraduk@gmail.com> Cc: FreeBSD-Questions <freebsd-questions@freebsd.org> Subject: Re: Are system updates without reboots possible? Message-ID: <56E1B48B.2080908@qeng-ho.org> In-Reply-To: <CALfReyd1OVvwM5pg-HV6g223p01Wb40htK=PXQrBPTN53KdnzA@mail.gmail.com> References: <56E162B5.4010309@qeng-ho.org> <20160310143834.GA16507@neutralgood.org> <CALfReyd1OVvwM5pg-HV6g223p01Wb40htK=PXQrBPTN53KdnzA@mail.gmail.com>
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On 10/03/2016 15:17, krad wrote: > From what i remember there is an equivalent of linux pivot mount coming in > freebsd 11. Doing that technically isn't a reboot, but it will definitely > ensure everything is restarted. > > Is there any motive to this though, as the safest way is to create a new > boot env with the new patched stuff in, and then reboot. You have fail back > then, incase of issues. Partly pure curiosity, partly wishing to minimise server downtime. I know reboots are the safest way, I currently always reboot. However, I've never had problems with a security update, so I wondered if I could avoid even the small amount of down time a reboot takes. I've been looking at Erlang & Elixir recently and love the ability to update running code without interruption in suitably written servers. -- Moore's Law of Mad Science: Every eighteen months, the minimum IQ necessary to destroy the world drops by one point.
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