That is interesting. That appears to be showing two sets of fans (the 7.1s and 10.*). Do you have 4 power supplies in those? I don't know off the top of my head how many PSUs an R910 takes. 10.* in ipmitool is for power supplies and 7 is for the system board (see "ipmitool sdr entity help"). Maybe reseat them one at a time if you have enough power?
You could try the ipmitool command with "-v" to see more information Erich Weiler wrote: > Very useful: > > [r...@server ~]# ipmitool sdr type Fan > FAN 1 RPM | 30h | ok | 7.1 | 1320 RPM > FAN 2 RPM | 31h | ok | 7.1 | 1320 RPM > FAN 3 RPM | 32h | ok | 7.1 | 1440 RPM > FAN 4 RPM | 33h | ok | 7.1 | 1680 RPM > FAN 5 RPM | 34h | ok | 7.1 | 1560 RPM > FAN 6 RPM | 35h | ok | 7.1 | 1680 RPM > Fan RPM | 36h | ok | 10.1 | 3480 RPM > Fan RPM | 37h | ok | 10.2 | 10080 RPM > Fan RPM | 38h | ok | 10.3 | 3120 RPM > Fan RPM | 39h | ok | 10.4 | 2160 RPM > Fan Redundancy | 75h | ok | 7.1 | Fully Redundant > > I wonder why one fan is so fast while the others are slower. I'm > beginning to think the BIOS might be the next step, to check Fan speed > options... > > On 12/08/10 13:55, Ryan Cox wrote: >> We don't use OMSA here but do use ipmitool extensively. This may get >> you what you need. >> >> Load the following kernel modules first: ipmi_si, ipmi_devintf, >> ipmi_msghandler >> Give it a few seconds and then run: >> ipmitool sdr type Fan >> >> It can also be run remotely against an iDRAC (or BMC). >> >> We have had thermal issues before and it was almost always the result >> of thumbscrews that weren't in all the way. There definitely could >> be a different issue though. >> >> Ryan >> >> On 12/08/2010 02:49 PM, Erich Weiler wrote: >>> Yeah, I tried OMSA, but for the life of me could not get it to read >>> anything from the IPMI/BIOS interfaces. No idea why. I may just >>> have to reboot and go into the BIOS manually and see what I can see >>> there. >>> >>> Thanks! >>> >>> On 12/08/10 13:49, Bond Masuda wrote: >>>> Have you checked the fan speeds? Are they at full throttle? I don't >>>> know >>>> much about the R910, but usually you can get fan speed readings >>>> from OMSA. >>>> >>>> -----Original Message----- >>>> From: [email protected] >>>> [mailto:[email protected]] On Behalf Of Erich Weiler >>>> Sent: Wednesday, December 08, 2010 1:40 PM >>>> To: Ryan Cox >>>> Cc: [email protected] >>>> Subject: Re: R910/Linux CPU Heat Problems? >>>> >>>>> Just so you know, the kernel is merely responding to interrupts >>>>> from the processor cores themselves saying they are over >>>>> temperature. The cores have their thresholds set and the kernel >>>>> can't and doesn't mess with them. If the kernel reports the >>>>> processors are hot, the processors are actually hot. >>>> >>>> Ah, good to know. It may be that the air is simply not cool enough >>>> in the datacenter, but this would be the first time I've ever seen >>>> this with any of our servers. I'll double check the screws and >>>> fans and see if that might be an issue... >>>> >>>> _______________________________________________ >>>> Linux-PowerEdge mailing list >>>> [email protected] >>>> https://lists.us.dell.com/mailman/listinfo/linux-poweredge >>>> Please read the FAQ at http://lists.us.dell.com/faq >>>> >> -- Ryan Cox Systems Administrator Fulton Supercomputing Lab Brigham Young University 801-422-5703 _______________________________________________ Linux-PowerEdge mailing list [email protected] https://lists.us.dell.com/mailman/listinfo/linux-poweredge Please read the FAQ at http://lists.us.dell.com/faq
