On 04/19/2017 12:18 PM, PJ Welsh wrote:
On Wed, Apr 19, 2017 at 5:40 AM, Johnny Hughes <johnny@centos.org mailto:johnny@centos.org> wrote:
On 04/18/2017 12:39 PM, PJ Welsh wrote: > Here is something interesting... I went through the BIOS options and > found that one R710 that *is* functioning only differed in that "Logical > Processor"/Hyperthreading was *enabled* while the one that is *not* > functioning had HT *disabled*. Enabled Logical Processor and the system > starts without issue! I've rebooted 3 times now without issue. > Dell R710 BIOS version 6.4.0 > 2x Intel(R) Xeon(R) CPU L5639 @ 2.13GHz > 4.9.20-26.el7.x86_64 #1 SMP Tue Apr 4 11:19:26 CDT 2017 x86_64 x86_64 > x86_64 GNU/Linux > Outstanding .. I have now released a 4.9.23-26.el6 and .el7 to the system as normal updates. It should be available later today. <snip>I've verified with a second Dell R710 that disabling Hyperthreading/Logical Processor causes the primary xen booting kernel to fail and reboot. Consequently, enabling allows for the system to start as expected and without any issue: Current tested kernel was: 4.9.13-22.el7.x86_64 #1 SMP Sun Feb 26 22:15:59 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux
I just attempted an update and the 4.9.23-26 is not yet up. Does this update address the Hyperthreading issue in any way?
I don't think so .. at least I did not specifically add anything to do so.
You can get it here for testing:
https://buildlogs.centos.org/centos/7/virt/x86_64/xen/
(or from /6/ as well for CentOS-6)
Not sure why it did not go out on the signing run .. will check that server.