zVM will not adjust its own time.  You can use the DEFINE TIMEZONE and SET
TIMEZONE commands to change the time for VM. Be sure to adjust your SYSTEM
CONFIG file accordingly.  Guest systems, however, may not take this well.
CMS will not automatically adjust.  If you have processes running under CMS,
they will need to be logged off and logged back on.
If linux are your only guests, they may be OK.
To be safe, we are taking our system down and leaving it down for an hour.





-----Original Message-----
From: Alan Cox [mailto:alan@;lxorguk.ukuu.org.uk]
Sent: Tuesday, October 22, 2002 11:11 AM
To: [EMAIL PROTECTED]
Subject: Re: [LINUX-390] time change


On Tue, 2002-10-22 at 17:28, Lionel Dyck wrote:
> Will linux and z/vm automatically adjust the time or does it have to be
> done manually this weekend?

Linux lives in UTC time. What happens depends upon the timezone that
process has chosen to occupy. If its a normal timezone (US east coast,
UK etc) then yes it will automatically account for summer time/winter
time shifts, leap years and any IERS pre-published leap seconds in its
tables.

Alan


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