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Re: Serious clock problem



On Thu, Nov 05, 2009 at 10:40:16AM +0000, Michal wrote:
> Steve Reilly wrote:
> > FTALOVER wrote:
> >> Hi all,
> >>
> >> I'm running VMW ESXi 3i (3.5.0) on an 4 CPUs DELL Poweredge 1950.  This
> >> machine is  hosting 8 virtual machines, 5 running Etch and 3 running
> >> Lenny. All guests were running fine until I upgraded the kernel to
> >> linux-image-2.6.26-2-686_2.6.26-19 in the 3 boxes running Lenny.  Now
> >> those boxes are repeatedly freezing because the system clock seems to
> >> stall. Forcing the kernel to use acpi_pm as clocksource instead of TSC
> >> and disabling TSC doesn't seems to help. So, does anybody have any
> >> suggestion  on how to fix this?
> >>
> >> Thanks
> >>
> >> Eric L.
> >>
> >>
> 
> Did you not take a snapshot before the upgrade?? One of the biggest +'s
> about ESXi is befor you do anything, take a snapshot to roll back to...
> 
> >>
> > boot back to the old kernel and delete the new one?   restore a backup?
> >  just curious....why are you installing something other than a security
> > update on a server?

Unhapilly, this is very common with VMware...
There is some good configuration, but depends on kernel version,
hardware...
The Good doc :
http://www.vmware.com/pdf/vmware_timekeeping.pdf

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