Snapshot rollback

[jhr]

Hi all,

I was wonder what exactly would happen when I make a snapshot of live linux VM and then after a couple of hours I will click on rollback ?
I supposed that VM will be at the same state when I did a snapshot. I am pretty sure of that.
But I was wonder what will happen after that. My rollbacked VM will have an old time, but I have configured a chronyd service to handle a correct time.
Will the chrony daemon works or not ? Will speed up RTC to actual time or it will be complained about huge time differencies ?

The VM was rollbacked. The time is in the past. Chrony not complained at all. Chronyc sources shows a couple of internet time servers with a minimum Last sample +1675us, -1774us. date command shows Thu Jan 25 09:01:59 CET 2024, but now is Sun Jan 25 17:01:59 CET 2024.
I waited for a day, but seems VM to not catch the current time.
When I restarted chronyd services, the time shift to acctual time after a few seconds.

Does this means that if I not restarted chrony daemon, the time will be wrong for ever ?
Why chronyc sources shows bad Last samples ?

I would be rather when chrony shows warning about a huge time skew and refused to do anything + chronyc sources should shows Last sample around 4800 minutes.

I am not complaining to Proxmox itself, I was wondered if someone have the same experiances.

THX

 

[alexskysilk]

Will the chrony daemon works or not ?

it will.

Will speed up RTC to actual time or it will be complained about huge time differencies ?

RTC doesnt care about any time stated on your filesystem. the "RTC" is not part of your vm.

I waited for a day, but seems VM to not catch the current time.

set your timezone. timedatectl set-timezone <your timezone>. if you dont know what your tz nomenclature is, timedatectl list-timezones

 

[jhr]

Not sure what your suggestion about setting my timezone means ?
Of course I have my timezone from begining of VM installation.

 

[alexskysilk]

date command shows Thu Jan 25 09:01:59 CET 2024, but now is Sun Jan 25 17:01:59 CET 2024.

the time difference is an exact hour difference. meaning- wrong timezone.

 

[jhr]

the time difference is an exact time difference between made a snapshot and rolled it back. So I made snapshot, waited for 6 hours and rolled back a snapshot.
I did not touch timezone. It is the same VM.