/dev/ipmi0 does not exist R710 SLES 11 SP2

Question

Hey guys,

I have been searching and searching and searching and haven't been successful in finding the solution to this problem of trying to get ipmitool to work which is dependent on /dev/ipmi0 to exist which it doesn't unfortunately. Here's some information that I think would be helpful:

# service ipmi status
ipmi_msghandler module loaded.
ipmi_si module loaded.
ipmi_devintf module loaded.
/dev/ipmi0 does not exist.

# ./srvadmin-services.sh status
dell_rbu (module) is running
ipmi driver is stopped
dsm_sa_datamgrd (pid 30636) is running
dsm_sa_eventmgrd (pid 30757) is running
dsm_sa_snmpd (pid 30816) is running
dsm_om_shrsvcd (pid 30894) is running
dsm_om_connsvcd (pid 30919 30918) is running

ipmi message handler version 39.2
May 29 13:36:13 # kernel: [11369545.480521] IPMI System Interface driver.
May 29 13:36:13 # kernel: [11369545.480523] ipmi_si: probing via hardcoded address
May 29 13:36:13 # kernel: [11369545.480524] ipmi_si: Adding hardcoded-specified kcs state machine
May 29 13:36:13 # kernel: [11369545.480526] ipmi_si: Trying hardcoded-specified kcs state machine at i/o address 0xca2, slave address 0x0, irq 0
May 29 13:36:13 # kernel: [11369545.480532] ipmi_si: Interface detection failed

# service ipmi restart
Stopping all ipmi drivers: done
Starting ipmi drivers: done

# lsmod | grep ipmi
ipmi_devintf           17509 0
ipmi_si                53294 0
ipmi_msghandler        49895 2 ipmi_devintf,ipmi_si

Let me know if there's any further information I can provide.

Thanks

DELL-Chris H · Answer

Random0Munky,

Would you do me a favor and run this command to identify which IPMI you are using? Either SLES or OMSA.

zypper wp ipmi_si.ko

After that we will want to try switching to the other, whichever that would be.

Let me know what you find out.

random0munky · Answer

Good morning Chris,

Thanks for the reply:

Here's the output I received while doing entering in that command:

# zypper wp ipmi_si.ko

Loading repository data...

Reading installed packages...

No providers of 'ipmi_si.ko' found.

/lib/modules/3.0.42-0.7-default/kernel/drivers/char/ipmi# ls

ipmi_devintf.ko ipmi_msghandler.ko ipmi_poweroff.ko ipmi_si.ko ipmi_watchdog.ko

random0munky · Answer

I have received a reply from the SUSE forums with this. Is there anything to shed some light on:

Firstly for others watching this thread please note this issue has also

been posted to the Dell Community Support Forums @

en.community.dell.com/.../20379839.aspx

Does the server boot through UEFI? Dell have an Installation Instructions

and Important Information document for PowerEdge Systems running SUSE Linux

Enterprise Server 11[1] and page 14 includes the following issue and

resolution:

--begin--

IPMI May Not Start On Systems That Boot Through UEFI

Description

The IPMI kernel modules might fail to load on systems that boot through

UEFI. As a consequence, services that depend on IPMI may be affected.

Work around

To work around this issue, add the following line to/etc/modprobe.conf

before starting the IPMI service:

options ipmi_si type="kcs" ports="0xca8" regspacings="4"

A fix for this issue will be available in a future SUSE Linux Enterprise

Server 11 kernel update.

Cause

This is caused due to a kernel bug that sets the IPMI driver to use the

Block Transfer (BT) interface instead of the KCS interface.

---end---

Of course it's possible that the above issue has been fixed in a later

version of the kernel and is not your particular issue if using UEFI.

HTH.

[1]

ftp.dell.com/.../all-produ...uide_en-us.pdf

--

Simon

SUSE Knowledge Partner

Thanks

random0munky · Answer

Got it! rmmod ipmi_si && modprobe -v ipmi_si type='kcs' ports='0xca8' regspacings='4'

Systems Management General

/dev/ipmi0 does not exist R710 SLES 11 SP2

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