We found a typo in our ZVM system config. So VM was still showing CDT rather than CST, and evidently that affected Linux as well (even though Linux was pulling the UTC time from hardware?!? )
-----Original Message----- From: Linux on 390 Port [mailto:LINUX-390@VM.MARIST.EDU] On Behalf Of Gregg Levine Sent: Monday, November 04, 2013 9:55 AM To: LINUX-390@VM.MARIST.EDU Subject: Re: Daylight savings time issue Hello! Jonathon DST (Daylight Savings Time) ended yesterday at 2AM. And we all were supposed to set our clocks back an hour over the Saturday night. How Linux does keep time has been addressed, but I am more curious as to why your ZVM is still showing CDT when it also should be showing CST. ----- Gregg C Levine gregg.drw...@gmail.com "This signature fought the Time Wars, time and again." On Mon, Nov 4, 2013 at 8:22 AM, Veencamp, Jonathon D. <jdveenc...@fedins.com> wrote: > ZVM is showing CDT, Linux is showing CST. (so the clock is an hour off) > > We use SUSE Linux. Yast2 timezone shows hardware clock set to UTC, and our > timezone as Central Time (Chicago). > > It's like Linux isn't correctly recognizing that Daylight Savings began > yesterday. If I change the timezone to Eastern Time, then the local time on > Linux is displayed correctly. But that's a workaround and not the correct > fix. Still, everything has been working as intended for years, so I'm > confused why this is suddenly an issue this IPL. > > Jon > > -----Original Message----- > From: Linux on 390 Port [mailto:LINUX-390@VM.MARIST.EDU] On Behalf Of Davis, > Larry (National VM Capability) > Sent: Monday, November 04, 2013 7:18 AM > To: LINUX-390@VM.MARIST.EDU > Subject: Re: Daylight savings time issue > > Shouldn't it be CST Now and if Operations adjusted the clock at IPL time then > VM is correct by Operator intervention. > When you installed Linux did you tell it to use GMT and apply its own offset > or use the Local time? > One answer I believe uses the hardware clock and the other uses the VMDBK > clock for the guest, could be wrong though > > > > Larry Davis, > VM Capability > > -----Original Message----- > From: Linux on 390 Port [mailto:LINUX-390@VM.MARIST.EDU] On Behalf Of > Veencamp, Jonathon D. > Sent: Monday, November 04, 2013 8:12 AM > To: LINUX-390@VM.MARIST.EDU > Subject: Daylight savings time issue > > Good morning list, > > > > Does anyone have any quick advice? We are in Minnesota and have just > switched to Daylight Savings. Someone IPL'd ZVM differently yesterday than > on past IPL's. (TOD clock question answered yes). Now we are seeing the > correct time in CMS in zVM (I think) but Linux is not showing daylight > savings. > > > > ZVM > > query timezone > > Zone Direction Offset Status > > UTC ---- 00.00.00 Inactive > > GMT ---- 00.00.00 Inactive > > EDT West 04.00.00 Inactive > > EST West 05.00.00 Inactive > > CDT West 05.00.00 Active > > CST West 06.00.00 Inactive > > MDT West 06.00.00 Inactive > > MST West 07.00.00 Inactive > > PDT West 07.00.00 Inactive > > PST West 08.00.00 Inactive > > Ready; T=0.01/0.01 07:05:22 <-- This is correct. > > > > zLinux > > # date > > Mon Nov 4 06:05:35 CST 2013 <-- So CST is the issue. > > > > I verified that /etc/timezone is set to the same as > /usr/share/zoneinfo/America/Chicago. Our TZ environmental variable is not > set. > > > > Any advice? > > > > Thanks, > > Jon Veencamp > > ________________________________ > > The information contained in this e-mail message is intended only for the > personal and confidential use of the designated recipient(s) named above. > This message may be an attorney-client or work product communication which is > privileged and confidential. It may also contain protected health information > that is protected by federal law. If you have received this communication in > error, please notify us immediately by telephone and destroy (shred) the > original message and all attachments. Any review, dissemination, distribution > or copying of this message by any person other than the intended recipient(s) > or their authorized agents is strictly prohibited. Thank you. > > ---------------------------------------------------------------------- > For LINUX-390 subscribe / signoff / archive access instructions, send email > to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit > http://www.marist.edu/htbin/wlvindex?LINUX-390 > ---------------------------------------------------------------------- > For more information on Linux on System z, visit http://wiki.linuxvm.org/ > > ---------------------------------------------------------------------- > For LINUX-390 subscribe / signoff / archive access instructions, > send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit > http://www.marist.edu/htbin/wlvindex?LINUX-390 > ---------------------------------------------------------------------- > For more information on Linux on System z, visit > http://wiki.linuxvm.org/ > > ________________________________ > > The information contained in this e-mail message is intended only for the > personal and confidential use of the designated recipient(s) named above. > This message may be an attorney-client or work product communication which is > privileged and confidential. It may also contain protected health information > that is protected by federal law. If you have received this communication in > error, please notify us immediately by telephone and destroy (shred) the > original message and all attachments. Any review, dissemination, distribution > or copying of this message by any person other than the intended recipient(s) > or their authorized agents is strictly prohibited. Thank you. > > ---------------------------------------------------------------------- > For LINUX-390 subscribe / signoff / archive access instructions, > send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit > http://www.marist.edu/htbin/wlvindex?LINUX-390 > ---------------------------------------------------------------------- > For more information on Linux on System z, visit > http://wiki.linuxvm.org/ ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 ---------------------------------------------------------------------- For more information on Linux on System z, visit http://wiki.linuxvm.org/ ________________________________ The information contained in this e-mail message is intended only for the personal and confidential use of the designated recipient(s) named above. This message may be an attorney-client or work product communication which is privileged and confidential. It may also contain protected health information that is protected by federal law. If you have received this communication in error, please notify us immediately by telephone and destroy (shred) the original message and all attachments. Any review, dissemination, distribution or copying of this message by any person other than the intended recipient(s) or their authorized agents is strictly prohibited. Thank you. ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 ---------------------------------------------------------------------- For more information on Linux on System z, visit http://wiki.linuxvm.org/
