* On 2015-05-05 at 13:09 BST, Gavin Ang wrote: > Can you or someone else advise what are the risks in upgrading to the > latest based on this scenario? Will there be any problem with the legacy > production machines that we can't quite afford to take down and reboot at > this time.
The design of SmartOS is such that it should in theory be safe, at any point in time, to upgrade to any newer platform image from any particular release. It's one of the reasons we make the global zone somewhat hostile to user modifications. We also apply the "FCS" (First Customer Ship) rule so there is no notion of a stable release: every release should be stable, and the most stable release should be the most recent. As long as you haven't done anything funky in your global zone, then it should be fine. That being said, from time to time we do unfortunately introduce unintended regressions, and so if there is a way to stage an upgrade in a test environment first then that would be preferable. Any upgrade which doesn't work correctly and isn't caused by user modification (e.g. installing stuff in the global zone) or depending upon non-public interfaces (e.g. munging zones directly rather than via vmadm) is a bug that we'd very much like to hear about. -- Jonathan Perkin - Joyent, Inc. - www.joyent.com ------------------------------------------- smartos-discuss Archives: https://www.listbox.com/member/archive/184463/=now RSS Feed: https://www.listbox.com/member/archive/rss/184463/25769125-55cfbc00 Modify Your Subscription: https://www.listbox.com/member/?member_id=25769125&id_secret=25769125-7688e9fb Powered by Listbox: http://www.listbox.com
