Displaying 4 results from an estimated 4 matches for "clocksource_failov".
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clocksource_failover
2016 Jun 21
0
Heavy clock drifts inside of KVM guests (qemu-kvm 2.1.2)
...ng OpenNTPD on the guests
We have some hints along our investigations. Novell for example says that
CPU pinning may help on drifting guests:
https://www.novell.com/support/kb/doc.php?id=7008698
Others suggested using an "failover clocksource" on the guests:
https://blog.laimbock.com/tag/clocksource_failover/
However, before we just continue to poke around in the dark, we wanted to
hear input from virtualization experts that may have stumbled across
something like this before. Any input would be greatly appreciated!
Please reply directly, as I'm not subscribed to the list. And sorry for
cross-p...
2016 Jun 21
0
Heavy clock drifts inside of KVM guests (qemu-kvm 2.1.2)
...ng OpenNTPD on the guests
We have some hints along our investigations. Novell for example says that
CPU pinning may help on drifting guests:
https://www.novell.com/support/kb/doc.php?id=7008698
Others suggested using an "failover clocksource" on the guests:
https://blog.laimbock.com/tag/clocksource_failover/
However, before we just continue to poke around in the dark, we wanted to
hear input from virtualization experts that may have stumbled across
something like this before. Any input would be greatly appreciated!
Please reply directly, as I'm not subscribed to the list. And sorry for
cross-p...
2015 Feb 16
2
Intermittent problem, likely disk IO related - mptscsih: ioc0: attempting task abort!
...f811a45b1>] ? sys_ioctl+0x81/0xa0
Feb 16 06:07:01 [<ffffffff810e5afe>] ? __audit_syscall_exit+0x25e/0x290
Feb 16 06:07:01 [<ffffffff8100b072>] ? system_call_fastpath+0x16/0x1b
Feb 16 06:07:01 Clocksource tsc unstable (delta = -77309385171 ns). Enable clocksource failover by adding clocksource_failover kernel parameter.
>
> >
> > I had a tail -f over ssh for a week, when this just happened.
> >
> > Feb 8 00:10:21 thirteen-230 kernel: mptscsih: ioc0:
> > attempting task abort! (sc=ffff880057a0a080)
> > Feb 8 00:10:21 thirteen-230 kernel...
2015 Feb 08
2
Intermittent problem, likely disk IO related - mptscsih: ioc0: attempting task abort!
NOTE: this is happening on Centos 6 x86_64, 2.6.32-504.3.3.el6.x86_64 not Centos 5
Dell PowerEdge 2970, Seagate SATA drive, non-raid.
I have this server which has been dying randomly, with no logs.
I had a tail -f over ssh for a week, when this just happened.
Feb 8 00:10:21 thirteen-230 kernel: mptscsih: ioc0: attempting task abort! (sc=ffff880057a0a080)
Feb 8 00:10:21 thirteen-230 kernel: