Zimbra offers Open Source email server software and shared calendar for Linux and the Mac
Go Back   Zimbra :: Forums > Zimbra Collaboration Suite > Administrators

Welcome to the Zimbra :: Forums!
Welcome, if you would like to post a comment please register. We also encourage you to explore all things Zimbra with our team and members of the community.

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
  #1 (permalink)  
Old 08-31-2009, 09:50 AM
Member
 
Posts: 12
Default Date/Time problem on a Zimbra Box

Hello all,

I'm not sure if the problem is with Zimbra, but i have installed Zimbra OS Edition on a virtual machine (HyperV) under CentOS 5.2 since 4 months ago. I have a problem with the Date/Time on the machine, i set the correct Date/Time, after few hours or days, i notice that mails have wrong tima or date, i check the date and in found that the Date/Time are not correct.

Do you have any idea? It can comes from the HyperV ? From Zimbra?

Info: I have an other Exchange server on a virtual machine on the same HyperV server and i dont have any Date/Time problem on that Exchange Server.

Thank you for your help.

Regards.
Reply With Quote
  #2 (permalink)  
Old 08-31-2009, 10:29 AM
Zimbra Consultant & Moderator
 
Posts: 20,312
Default

Quote:
Originally Posted by rachid View Post
Hello all,

I'm not sure if the problem is with Zimbra,
This isn't a Zimbra problem, it's a problem of running Linux under a VM.
__________________
Regards


Bill
Reply With Quote
  #3 (permalink)  
Old 08-31-2009, 10:56 AM
Advanced Member
 
Posts: 189
Default

I know time drift issues are pretty common using VMware, and I assume the same probably applies to HyperV. This is most definitely not a Zimbra issue.
__________________
Release 6.0.2_GA_1912.UBUNTU8_64 UBUNTU8_64 NETWORK edition + Mobile Option
Activesync with Moto Q9C, HTC Touch Pro, Palm Pro, & Palm Pre
Reply With Quote
  #4 (permalink)  
Old 08-31-2009, 11:05 AM
Moderator
 
Posts: 1,554
Default

yeah not sure about hyperv but using esx paravirtualization with a vmi enabled linux kernel has eliminated time issues in linux guests for us
Reply With Quote
  #5 (permalink)  
Old 08-31-2009, 01:28 PM
Active Member
 
Posts: 33
Default

I've not tested this with HyperV, but in VMware, running an ntp daemon in the guest, may also work. However, do not forget to insert the option

tinker panic 0

As the first line of /etc/ntp.conf. Also, I assume there is something in HyperV similar to the VMware guest daemon, which allows you to synchronize the clock between host and guest.
__________________
Menno Pieters
IGI Group
Reply With Quote
  #6 (permalink)  
Old 09-01-2009, 09:03 AM
Advanced Member
 
Posts: 189
Default

Quote:
Originally Posted by bdial View Post
yeah not sure about hyperv but using esx paravirtualization with a vmi enabled linux kernel has eliminated time issues in linux guests for us
I've seen similar results with a machine I had time issues with, that I've upgraded to a VMI enable kernel and turned on VMI in the VM settings for the virtual machine and my time issues went away.
__________________
Release 6.0.2_GA_1912.UBUNTU8_64 UBUNTU8_64 NETWORK edition + Mobile Option
Activesync with Moto Q9C, HTC Touch Pro, Palm Pro, & Palm Pre
Reply With Quote
  #7 (permalink)  
Old 09-01-2009, 10:13 AM
Member
 
Posts: 12
Default

Thank you,
I just installed the NTP daemon on the guest, i will monitor that for a couple of days and let you know.

Thank you verry much
Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes


Similar Threads

Why Join?

Registering let's you ask questions, makes it easier to search, displays any files attached to posts, and notifies you about replies.

blog.zimbra.com




 

SEO by vBSEO ©2011, Crawlability, Inc.