Re: NM vs clock

2010-01-26 Thread Marc Herbert

>> Are you using VMware to host this VM??? There are various issues with
>> VMware and clock on Linux guests.
>>
> ...
> No, VirtualBox.

By the way, latest versions of VirtualBox can finally provide a
virtualized hardware clock in UTC, which is the best way to avoid this
issue:

http://www.virtualbox.org/ticket/1310

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Re: NM vs clock (and liveCDs)

2010-01-25 Thread Neal Becker
Marc Herbert wrote:

> Neal Becker a écrit :
>> José Queiroz wrote:
>> 
>>> Are you using VMware to host this VM??? There are various issues with
>>> VMware and clock on Linux guests.
> 
> I have this problem with real hardware. _This_ time problem has nothing
> to do with virtualization.
> 
> Most PCs have their hardware clock unfortunately configured in local
> time. But local time is useless when you are missing the time zone -
> which is exactly the case of any liveCD image. I do not think there is
> any way to get rid of such clock jumps when running liveCDs.
> 
> See also: http://www.cl.cam.ac.uk/~mgk25/mswish/ut-rtc.html
> 
> 
>> No, VirtualBox.  I fixed it with clock -w --localtime.
> 
> Could you please elaborate?
> 
> 
After using 'clock -w --localtime', I no longer see the clock jump, and 
dhclient seems to work.

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Re: NM vs clock (and liveCDs)

2010-01-25 Thread Marc Herbert
Neal Becker a écrit :
> José Queiroz wrote:
> 
>> Are you using VMware to host this VM??? There are various issues with
>> VMware and clock on Linux guests.

I have this problem with real hardware. _This_ time problem has nothing
to do with virtualization.

Most PCs have their hardware clock unfortunately configured in local
time. But local time is useless when you are missing the time zone -
which is exactly the case of any liveCD image. I do not think there is
any way to get rid of such clock jumps when running liveCDs.

See also: http://www.cl.cam.ac.uk/~mgk25/mswish/ut-rtc.html


> No, VirtualBox.  I fixed it with clock -w --localtime.

Could you please elaborate?


Cheers,

Marc

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Re: NM vs clock

2010-01-25 Thread Neal Becker
José Queiroz wrote:

> Are you using VMware to host this VM??? There are various issues with
> VMware and clock on Linux guests.
> 
...
No, VirtualBox.  I fixed it with clock -w --localtime.

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Re: NM vs clock

2010-01-25 Thread José Queiroz
Are you using VMware to host this VM??? There are various issues with
VMware and clock on Linux guests.

2010/1/25 Neal Becker :
> I have a virtual machine running F12, setup to bring up eth0 at boot (nm
> controlled).
>
> It kept failing dhcp.
> Jan 25 04:32:14 localhost NetworkManager:   DHCP: device eth0 state
> changed (null) -> preinit
> Jan 25 04:32:14 localhost dhclient[1310]: Listening on
> LPF/eth0/08:00:27:b5:b3:6f
> Jan 25 04:32:14 localhost dhclient[1310]: Sending on
> LPF/eth0/08:00:27:b5:b3:6f
> Jan 25 04:32:14 localhost dhclient[1310]: Sending on   Socket/fallback
> Jan 25 04:32:15 localhost dhclient[1310]: DHCPREQUEST on eth0 to
> 255.255.255.255 port 67
> Jan 25 04:32:15 localhost dhclient[1310]: DHCPNAK from 10.32.111.2
> Jan 25 04:32:15 localhost NetworkManager:   DHCP: device eth0 state
> changed preinit -> expire
> Jan 25 04:32:15 localhost NetworkManager:   DHCP: device eth0 state
> changed expire -> preinit
> Jan 25 04:32:15 localhost dhclient[1310]: DHCPDISCOVER on eth0 to
> 255.255.255.255 port 67 interval 5
> Jan 25 09:32:16 localhost ntpd[1380]: ntpd 4.2@1.1612-o Wed Dec  9
> 11:49:11 UTC 2009 (1)
> Jan 25 09:32:16 localhost ntpd[1381]: precision = 0.076 usec
> Jan 25 09:32:16 localhost ntpd[1381]: Listening on interface #0 wildcard,
> 0.0.0.0#123 Disabled
> Jan 25 09:32:16 localhost ntpd[1381]: Listening on interface #1 wildcard,
> ::#123 Disabled
> Jan 25 09:32:16 localhost ntpd[1381]: Listening on interface #2 lo, ::1#123
> Enabled
> Jan 25 09:32:16 localhost ntpd[1381]: Listening on interface #3 lo,
> 127.0.0.1#123 Enabled
> Jan 25 09:32:16 localhost ntpd[1381]: Listening on routing socket on fd #20
> for interface updates
> Jan 25 09:32:16 localhost ntpd[1381]: kernel time sync status 2040
> Jan 25 09:32:16 localhost ntpd[1381]: frequency initialized -68.076 PPM from
> /var/lib/ntp/drift
> Jan 25 09:32:17 localhost dhclient[1310]: No DHCPOFFERS received.
>
> Notice the clock changed from 04:00 to 09:00 when ntpd started.  Apparantly,
> confusion over the clock time.
>
> Fixing the clock time seems to have solved the problem.  I guess the time
> change made dhclient think it should have timed out?
>
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NM vs clock

2010-01-25 Thread Neal Becker
I have a virtual machine running F12, setup to bring up eth0 at boot (nm 
controlled).

It kept failing dhcp.
Jan 25 04:32:14 localhost NetworkManager:   DHCP: device eth0 state 
changed (null) -> preinit
Jan 25 04:32:14 localhost dhclient[1310]: Listening on 
LPF/eth0/08:00:27:b5:b3:6f
Jan 25 04:32:14 localhost dhclient[1310]: Sending on   
LPF/eth0/08:00:27:b5:b3:6f
Jan 25 04:32:14 localhost dhclient[1310]: Sending on   Socket/fallback
Jan 25 04:32:15 localhost dhclient[1310]: DHCPREQUEST on eth0 to 
255.255.255.255 port 67
Jan 25 04:32:15 localhost dhclient[1310]: DHCPNAK from 10.32.111.2
Jan 25 04:32:15 localhost NetworkManager:   DHCP: device eth0 state 
changed preinit -> expire
Jan 25 04:32:15 localhost NetworkManager:   DHCP: device eth0 state 
changed expire -> preinit
Jan 25 04:32:15 localhost dhclient[1310]: DHCPDISCOVER on eth0 to 
255.255.255.255 port 67 interval 5
Jan 25 09:32:16 localhost ntpd[1380]: ntpd 4.2@1.1612-o Wed Dec  9 
11:49:11 UTC 2009 (1)
Jan 25 09:32:16 localhost ntpd[1381]: precision = 0.076 usec
Jan 25 09:32:16 localhost ntpd[1381]: Listening on interface #0 wildcard, 
0.0.0.0#123 Disabled
Jan 25 09:32:16 localhost ntpd[1381]: Listening on interface #1 wildcard, 
::#123 Disabled
Jan 25 09:32:16 localhost ntpd[1381]: Listening on interface #2 lo, ::1#123 
Enabled
Jan 25 09:32:16 localhost ntpd[1381]: Listening on interface #3 lo, 
127.0.0.1#123 Enabled
Jan 25 09:32:16 localhost ntpd[1381]: Listening on routing socket on fd #20 
for interface updates
Jan 25 09:32:16 localhost ntpd[1381]: kernel time sync status 2040
Jan 25 09:32:16 localhost ntpd[1381]: frequency initialized -68.076 PPM from 
/var/lib/ntp/drift
Jan 25 09:32:17 localhost dhclient[1310]: No DHCPOFFERS received.

Notice the clock changed from 04:00 to 09:00 when ntpd started.  Apparantly, 
confusion over the clock time.

Fixing the clock time seems to have solved the problem.  I guess the time 
change made dhclient think it should have timed out?

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