Re: sclp_config: cpu capability changed.
Which begs the question: If you're responsible for monitoring and resolving such events, why didn't you know about the schedule for the hardware maintenance? Les David Boyes wrote: Based on your later message about simultaneous hardware maintenance happening around the same time as the capability change happened, that's more likely to be the cause (and would explain why you saw it on IFLs - that's one of the few things that would affect both CPs and IFLs similarly). If they finished the maintenance, it's probably back to normal now (although you should have seen another "capability change" message when the maintenance was finished and everything was back to full speed ahead). From: The IBM z/VM Operating System [mailto:IBMVM@LISTSERV.UARK.EDU] On Behalf Of Bhemidhi, Ashwin Sent: Tuesday, April 19, 2011 3:38 PM To: IBMVM@LISTSERV.UARK.EDU Subject: Re: sclp_config: cpu capability changed. It is a 2097-503 z10. Regards, Ashwin
Re: sclp_config: cpu capability changed.
Yes, there were multiple similar messages. I displayed the cpu capability and it matches to what Jonathan Quay sees on his z10. cat /sys/devices/system/cpu/cpu0/capability 1760 Thanks for all the help. Regards, Ashwin From: The IBM z/VM Operating System [mailto:IBMVM@LISTSERV.UARK.EDU] On Behalf Of David Boyes Sent: Tuesday, April 19, 2011 2:53 PM To: IBMVM@LISTSERV.UARK.EDU Subject: Re: sclp_config: cpu capability changed. Based on your later message about simultaneous hardware maintenance happening around the same time as the capability change happened, that's more likely to be the cause (and would explain why you saw it on IFLs - that's one of the few things that would affect both CPs and IFLs similarly). If they finished the maintenance, it's probably back to normal now (although you should have seen another "capability change" message when the maintenance was finished and everything was back to full speed ahead). From: The IBM z/VM Operating System [mailto:IBMVM@LISTSERV.UARK.EDU] On Behalf Of Bhemidhi, Ashwin Sent: Tuesday, April 19, 2011 3:38 PM To: IBMVM@LISTSERV.UARK.EDU Subject: Re: sclp_config: cpu capability changed. It is a 2097-503 z10. Regards, Ashwin
Re: sclp_config: cpu capability changed.
Based on your later message about simultaneous hardware maintenance happening around the same time as the capability change happened, that's more likely to be the cause (and would explain why you saw it on IFLs - that's one of the few things that would affect both CPs and IFLs similarly). If they finished the maintenance, it's probably back to normal now (although you should have seen another "capability change" message when the maintenance was finished and everything was back to full speed ahead). From: The IBM z/VM Operating System [mailto:IBMVM@LISTSERV.UARK.EDU] On Behalf Of Bhemidhi, Ashwin Sent: Tuesday, April 19, 2011 3:38 PM To: IBMVM@LISTSERV.UARK.EDU Subject: Re: sclp_config: cpu capability changed. It is a 2097-503 z10. Regards, Ashwin
Re: sclp_config: cpu capability changed.
It is a 2097-503 z10. Regards, Ashwin From: The IBM z/VM Operating System [mailto:IBMVM@LISTSERV.UARK.EDU] On Behalf Of David Boyes Sent: Tuesday, April 19, 2011 2:33 PM To: IBMVM@LISTSERV.UARK.EDU Subject: Re: sclp_config: cpu capability changed. What model of CEC? If it's a z10 or a z196, it might be some of the power-saving features kicking in. That message can also occur if capacity-on-demand has modified the system capability (although it's usually rare to see it on a IFL). From: The IBM z/VM Operating System [mailto:IBMVM@LISTSERV.UARK.EDU] On Behalf Of Bhemidhi, Ashwin Sent: Tuesday, April 19, 2011 2:56 PM To: IBMVM@LISTSERV.UARK.EDU Subject: sclp_config: cpu capability changed. Hello all , I have noticed kernel message "Apr 19 12:35:07 kernel: sclp_config: cpu capability changed" on all of our Linux guest on multiple LPARs. Does this indicate a hardware issue with the IFL processor? I have asked our hardware support to check for any error on the machine. Thank you, Ashwin Bhemidhi
Re: sclp_config: cpu capability changed.
What model of CEC? If it's a z10 or a z196, it might be some of the power-saving features kicking in. That message can also occur if capacity-on-demand has modified the system capability (although it's usually rare to see it on a IFL). From: The IBM z/VM Operating System [mailto:IBMVM@LISTSERV.UARK.EDU] On Behalf Of Bhemidhi, Ashwin Sent: Tuesday, April 19, 2011 2:56 PM To: IBMVM@LISTSERV.UARK.EDU Subject: sclp_config: cpu capability changed. Hello all , I have noticed kernel message "Apr 19 12:35:07 kernel: sclp_config: cpu capability changed" on all of our Linux guest on multiple LPARs. Does this indicate a hardware issue with the IFL processor? I have asked our hardware support to check for any error on the machine. Thank you, Ashwin Bhemidhi
Re: sclp_config: cpu capability changed.
Well, our hardware support said that IBM was replacing some other failed component (not IFL) around the time I noticed those errors. The cpu capability on our z10 match what you reported on your z10. cat /sys/devices/system/cpu/cpu0/capability 1760 I have asked hardware team to check to see if there are any other errors. Hopefully the error was due the hardware maintenance. Thank you for the information on your z10. Regards, Ashwin From: The IBM z/VM Operating System [mailto:IBMVM@LISTSERV.UARK.EDU] On Behalf Of Quay, Jonathan (IHG) Sent: Tuesday, April 19, 2011 2:19 PM To: IBMVM@LISTSERV.UARK.EDU Subject: Re: sclp_config: cpu capability changed. It could very well mean a hardware issue. We received this message when the refrigeration unit in our z10 failed. The microcode scales back the processor speed. For our healthy z10: adczlnxsahqa1:/ # cat /sys/devices/system/cpu/cpu0/capability 1760 From: The IBM z/VM Operating System [mailto:IBMVM@LISTSERV.UARK.EDU] On Behalf Of Bhemidhi, Ashwin Sent: Tuesday, April 19, 2011 2:56 PM To: IBMVM@LISTSERV.UARK.EDU Subject: sclp_config: cpu capability changed. Hello all , I have noticed kernel message "Apr 19 12:35:07 kernel: sclp_config: cpu capability changed" on all of our Linux guest on multiple LPARs. Does this indicate a hardware issue with the IFL processor? I have asked our hardware support to check for any error on the machine. Thank you, Ashwin Bhemidhi
Re: sclp_config: cpu capability changed.
It could very well mean a hardware issue. We received this message when the refrigeration unit in our z10 failed. The microcode scales back the processor speed. For our healthy z10: adczlnxsahqa1:/ # cat /sys/devices/system/cpu/cpu0/capability 1760 From: The IBM z/VM Operating System [mailto:IBMVM@LISTSERV.UARK.EDU] On Behalf Of Bhemidhi, Ashwin Sent: Tuesday, April 19, 2011 2:56 PM To: IBMVM@LISTSERV.UARK.EDU Subject: sclp_config: cpu capability changed. Hello all , I have noticed kernel message "Apr 19 12:35:07 kernel: sclp_config: cpu capability changed" on all of our Linux guest on multiple LPARs. Does this indicate a hardware issue with the IFL processor? I have asked our hardware support to check for any error on the machine. Thank you, Ashwin Bhemidhi
sclp_config: cpu capability changed.
Hello all , I have noticed kernel message "Apr 19 12:35:07 kernel: sclp_config: cpu capability changed" on all of our Linux guest on multiple LPARs. Does this indicate a hardware issue with the IFL processor? I have asked our hardware support to check for any error on the machine. Thank you, Ashwin Bhemidhi
