On Sun, 13 Mar 2016 09:45:06 +0000 James <lista at xdrv.co.uk> wrote:> On 11/03/2016 15:17, Stephan von Krawczynski wrote: > > > zfs set sync=disabled ? > > Only if you are happy to loose data on power failure.I don't know the actual setup, but if you have no UPC you shouldn't host email services anyway. -- Regards, Stephan
On Sun, 13 Mar 2016 11:47:23 +0100 Stephan von Krawczynski <skraw at ithnet.com> wrote:> On Sun, 13 Mar 2016 09:45:06 +0000 > James <lista at xdrv.co.uk> wrote: > > > On 11/03/2016 15:17, Stephan von Krawczynski wrote: > > > > > zfs set sync=disabled ? > > > > Only if you are happy to loose data on power failure. > > I don't know the actual setup, but if you have no UPC you shouldn't host email > services anyway.That should read "UPS" of course ...> -- > Regards, > Stephan
On 13/03/2016 20:47, Stephan von Krawczynski wrote:> On Sun, 13 Mar 2016 09:45:06 +0000 > James <lista at xdrv.co.uk> wrote: > >> On 11/03/2016 15:17, Stephan von Krawczynski wrote: >> >> > zfs set sync=disabled ? >> >> Only if you are happy to loose data on power failure. > > I don't know the actual setup, but if you have no UPC you shouldn't > host email > services anyway.I'm guessing you meant UPS, anyway, a UPS wont protect you from human error. Also, most buildings, at least in this country, have a fire emergency shutoff requirement, meaning mains is isolated from the building, and the back up gennies are also forbidden to be engaged - UPS's dont last forever. -- If you have the urge to reply to all rather than reply to list, you best first read http://members.ausics.net/qwerty/
On Mon, 14 Mar 2016 09:32:42 +1000 Noel Butler <noel.butler at ausics.net> wrote:> On 13/03/2016 20:47, Stephan von Krawczynski wrote: > > On Sun, 13 Mar 2016 09:45:06 +0000 > > James <lista at xdrv.co.uk> wrote: > > > >> On 11/03/2016 15:17, Stephan von Krawczynski wrote: > >> > >> > zfs set sync=disabled ? > >> > >> Only if you are happy to loose data on power failure. > > > > I don't know the actual setup, but if you have no UPC you shouldn't > > host email > > services anyway. > > I'm guessing you meant UPS, anyway, a UPS wont protect you from human > error. > > Also, most buildings, at least in this country, have a fire emergency > shutoff requirement, meaning mains is isolated from the building, and > the back up gennies are also forbidden to be engaged - UPS's dont last > forever.Guys, please don't argue on kindergarten level. The UPS is for backing a sudden death, but not for running five days. Of course you can do a controlled shutdown if battery level falls below a trigger value. And this is about all you need: control. There is no fs error as long as you perform a regular shutdown. If UPS-backup is forbidden in your country then I suggest moving to civilized regions of the planet ;-) -- Regards, Stephan