[CentOS-devel] Fail to load kernel module ipmi_si on CentOS-6

[Frank Yu]

Hi Hans,

Thanks for you reply. I have solved this problem by install DCMI, and there is no IPMI supported on my host. 


> On May 25, 2016, at 11:21 PM, Hans Ecke <hans at ecke.ws <mailto:hans at ecke.ws>> wrote:
> 
> Frank,
> 
> The error message means that the module ipmi_si could not find the IPMI hardware device to talk to.
> 
> In the case of success it works like this:
> 
> * you call modprobe ipmi_si
> * kernel loads that module into memory
> * kernel calls initialization routine within that module
> * initialization routine finds hardware device and tells the kernel that all is well
> * there is a song and dance involving udev to create the /dev/*ipmi* device nodes
> * ipmitool uses those device nodes to talk to the hardware
> 
> In your case, this is what happened:
> 
> * you call modprobe ipmi_si
> * kernel loads that module into memory
> * kernel calls initialization routine within that module
> * initialization routine does not find hardware device and tells the kernel that it failed
> * kernel unloads the module again. It passes a very short error status back to you. This is where the "Error inserting ... no such device" message comes from. This is also why "lsmod" does not show the ipmi_si module.
> * no /dev/*ipmi* device nodes were created
> * ipmitool does not see the device nodes
> 
> If you look at dmesg, the module initialization routine might have printed a more specific error message there. If you find such an error message, chances are you can use google to fix your situation. (or maybe you just need a different ipmi module for your computer)
> 
> Hans
> 
> 
> On Wed, May 25, 2016 at 5:20 AM, Frank Yu <flyxiaoyu at gmail.com <mailto:flyxiaoyu at gmail.com>> wrote:
> Hi all,
> 
> I am trying to load kernel module ipmi_si, while failed with error "No such device", truth is I can find file in ../kernel/drivers/char/ipmi/ipmi_si.ko. So why I  can't load it?
> 
> 
> Steps:
> 
> # ls -l /lib/modules/2.6.32-573.el6.x86_64/kernel/drivers/char/ipmi/ipmi_si.ko
> -rwxr--r--. 1 root root 93080 Jul 23  2015 /lib/modules/2.6.32-573.el6.x86_64/kernel/drivers/char/ipmi/ipmi_si.ko
> 
> # modprobe ipmi_si
> FATAL: Error inserting ipmi_si (/lib/modules/2.6.32-573.el6.x86_64/kernel/drivers/char/ipmi/ipmi_si.ko): No such device
> 
> # lsmod |grep ipmi
> ipmi_devintf            7729  0 
> ipmi_poweroff           8532  0 
> ipmi_watchdog          17874  0 
> ipmi_msghandler        38701  3 ipmi_devintf,ipmi_poweroff,ipmi_watchdog
> 
> # ipmitool 
> Could not open device at /dev/ipmi0 or /dev/ipmi/0 or /dev/ipmidev/0: No such file or directory
> 
> ​What should I do if I want to setup IPMI on my centos host?
> ​
> 
> -- 
> Regards
> Frank Yu
> 
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