Set VM RTC date and time issue - Suse Enterpise 15 SP3 VM

[mf1979]

Hello,

I am trying to set specific date to vm and not getting date/time info from ntp or proxmox host.

It's Suse Enterprise 15 SP3.

I changed RTC start date and did not work. NTP service disabled in Suse settings.

I tried to change in VM SUSE date settings but whenever I reboot VM and it's date time info from Proxmox host

I tried hwclock --debug --systohc --localtime but still same issue

I found a useful " qemu-system-x86_64 [...] -rtc clock=vm,base=2010-12-03T01:02:00 "

But in Proxmox " qm " command it does not have " clock" option.

I don't want to change this settings on all VM systems just for specific one. RTC start date option worked on Redhat VM but not suse.

How can I set specific RTC time for SUSE 15 VM ? I don't want to make script in VM. I want to get proper solution from proxmox settings for specific host. I don't VM gets date/time info from proxmox host. VM should get date/time info from RTC start date parameter but it does not work for this VM.

Please help me.

Thank you

 

[dcsapak]

in vm options, there is a 'rtc startdate' option which corresponds to the '-rtc base' option in qemu
i just tested it here (with arch + no network) and it worked

 

[mf1979]

I already changed that settings even at VM setting by GUI and VM configuration file in OS level with "startdate: 2021-10-27"

But it does not work. It works in Redhat but not Suse.

 

[mf1979]

qemu-system-x86_64 has a command option with rtc clock to set "vm" means vm guest will only check setting as "base" given date. When you set "clock=vm" it does not get info from Proxmox host but I don't see any "qm" settings for "clock=vm" option.


qemu-system-x86_64 [...] -rtc clock=vm,base=2010-12-03T01:02:00

 

[dcsapak]

But it does not work. It works in Redhat but not Suse.

seems like a configuration issue in the guest?

qemu-system-x86_64 has a command option with rtc clock to set "vm" means vm guest will only check setting as "base" given date. When you set "clock=vm" it does not get info from Proxmox host but I don't see any "qm" settings for "clock=vm" option.

thats currently not directly possible, but you can use the 'args' parameter to add a generic qemu parameter to the vm, e.g.

qm set ID -args "-rtc clock=vm,base=2010-12-03T01:02:00"

also, you could open an enhancement request here: https://bugzilla.proxmox.com

 

[mf1979]

I did run command and it's same result as i did for "rtc start date" option;

#date
Wed 12 Jan 2022 11:53:10 AM EST

# timedatectl
Local time: Wed 2022-01-12 11:53:21 EST
Universal time: Wed 2022-01-12 16:53:21 UTC
RTC time: Wed 2021-10-27 10:10:52
Time zone: America/New_York (EST, -0500)
System clock synchronized: no
NTP service: inactive
RTC in local TZ: no

As you see Local Time is as real time as like Proxmox host. But RTC time is what i want.

How can I set Local time as like RTC?

Thank you

 

[dcsapak]

so it seems it works, but your guest is not configured right. sorry i have no idea how to properly do that in suse. normally i would check that no ntp service is running (timesyncd, chrony, etc.) but you said you deactivated ntp already.