F16: "last superblock write time in future"

Reindl Harald h.reindl at thelounge.net
Mon Mar 26 18:42:33 UTC 2012



Am 26.03.2012 20:22, schrieb Jef Spaleta:
>> hmmm - which HWCLOCK clock?
>> we are speaking about VMware Machines on ESXi/vSphere
> 
> My best suggestion for you is to read the following document.
> 
> www.vmware.com/files/pdf/Timekeeping-In-VirtualMachines.pdf
> 
> and follow the best practises outlined there.  You should have your
> linux guests setting so system time is in UTC not local time. I would
> suspect base on your symptoms you've got the wrong settings for the
> guest operating system.
> 
> The issue here is long standing and predates systemd. You really do
> need to follow the best practise recommendations set forth by vmware
> when using their virtualization product.

the document above is hughe outdated

this machines are installed 2008 with F9 and since then
upgraded, the first time this ever happens is after
upgrade to F16

all guests are using two ntp-servers in the LAN and time
is stable as long no reboot is done proven by the following
output which is a script calling "date" per ssh on each guest

Mo 26. Mär 20:40:41 CEST 2012
Mo 26. Mär 20:40:41 CEST 2012
Mo 26. Mär 20:40:41 CEST 2012
Mo 26. Mär 20:40:42 CEST 2012
Mo 26. Mär 20:40:42 CEST 2012
Mo 26. Mär 20:40:42 CEST 2012
Mo 26. Mär 20:40:43 CEST 2012
Mo 26. Mär 20:40:43 CEST 2012
Mo 26. Mär 20:40:43 CEST 2012
Mo 26. Mär 20:40:44 CEST 2012
Mo 26. Mär 20:40:44 CEST 2012
Mo 26. Mär 20:40:44 CEST 2012
Mo 26. Mär 20:40:45 CEST 2012
Mo 26. Mär 20:40:45 CEST 2012
Mo 26. Mär 20:40:46 CEST 2012
Mo 26. Mär 20:40:46 CEST 2012
Mo 26. Mär 20:40:47 CEST 2012
Mo 26. Mär 20:40:47 CEST 2012
Mo 26. Mär 20:40:47 CEST 2012


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