Hi Angelo, Taking a step aside from your questions,
have you managed to gather crashdump for analysis? Usually generating NMI is the way to go in this sort of hang situation, and per my check of /etc/system smartos kernel is configured to panic on sending NMI. If we had one we could try to take a look at where was your machine frozen, cheers, -Jan > On 4 Aug 2017, at 13:44, Dr. Angelo Roussos <[email protected]> wrote: > > Hi All, > > In the last week or so, we have had two host ‘freezes’ – both hosts running > image SmartOS 20160330T234717Z, and running fine (up until this point) for > well over a year. > > Both host servers required a power down and power up, and have been bought up > using the following image – 20161013T025521Z - purely because all our other > hosts are running this image and we haven’t tested anything more recent than > that in our environment. > > My questions are: > > What is considered best practice in respect of which image build to put onto > operational hosts? > If the response (as I expect) is for the most recent released build, what is > considered a ‘reasonable’ time frame to wait after a build is released until > it is considered operationally stable? > What ‘testing’ procedures (if any) are considered best practice before a > ‘stable’ build is deployed in an operational environment? > How frequently does it make sense to boot hosts into a ‘current’ build or do > you leave hosts running older builds until they either require a reboot (for > whatever reason), or hosts are end-of-life’d? > > Thanks and regards, > > Angelo. > > smartos-discuss | Archives > <https://www.listbox.com/member/archive/184463/=now> > <https://www.listbox.com/member/archive/rss/184463/29192162-098f32dc> | > Modify <https://www.listbox.com/member/?&;> Your Subscription ------------------------------------------- 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
