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> 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 > > _______________________________________________ > CentOS-devel mailing list > CentOS-devel at centos.org > https://lists.centos.org/mailman/listinfo/centos-devel > > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.centos.org/pipermail/centos-devel/attachments/20160525/7d4c39d9/attachment-0008.html>