Re: [Xen-users] clocksource/0: Time went backwards

["Shane D. Johnson" <SDJ@xxxxxxxxxxxxxxxxxxxxxx>]

Bart,
   I haven't had this happen but I  have seen a lot of references to 
similar problems on the mailing list archive.  I would start there and 
see if you can find your fix there.
Shane

Bart Verwilst wrote:
> Just happened again...
> Nobody has an idea what might be happening? This is obviously some kind of 
> bug.. :)
>
> Thanks!
>
> Bart
>
> ----- Original Message -----
> From: "Lists" <lists@xxxxxxxxxxx>
> To: Xen-users@xxxxxxxxxxxxxxxxxxx
> Sent: Wednesday, October 10, 2007 12:08:09 AM (GMT+0100) Europe/Berlin
> Subject: [Xen-users] clocksource/0: Time went backwards
>
> Dear fellow Xen'ers!
>
> I'm having a problem with my new Xen-enabled colocation server.. I hope ( at 
> least ;) ) one of you guys know how to fix this problem..
>
> For a certain amount of time ( 1-2 days ) the domU runs fine.. until the 
> console starts spitting out messages like these:
>
> [80182.004456] clocksource/0: Time went backwards: delta=-6917292717540055641 
> shadow=80182004054805 offset=400471
> [80182.004507] clocksource/0: Time went backwards: delta=-6917292717540005396 
> shadow=80182004054805 offset=450712
> [80182.004762] clocksource/0: Time went backwards: delta=-6917292717539750360 
> shadow=80182004054805 offset=705812
> [80182.004842] clocksource/0: Time went backwards: delta=-6917292717539670405 
> shadow=80182004054805 offset=785744
> [80182.004918] clocksource/0: Time went backwards: delta=-6917292717539594298 
> shadow=80182004054805 offset=861851
>
> The only action left is an xm shutdown, after which an xm create boots up the 
> machine fine for the next couple of days..
>
> I'm running Ubuntu 7.10, with the stock xen kernel ( 2.6.22-13-xen ).
>
> An ubuntu bug has already been reported and appended to by multiple persons 
> here:
>
> https://bugs.launchpad.net/ubuntu/+source/linux-source-2.6.22/+bug/146924
>
> Anyone have any ideas/patches/hints/.../anything that can help?
>
> Thanks a lot guys!
>
> Kind regards,
>
> Bart Verwilst
>
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