Question & Answer
Question
During the ./installibmcs process for Communications Server for Linux (CS Linux) on System z, the message "ctcmpc device driver is not installed" is issued. However, MultiPath Channel (MPC) is not in use. Is corrective action needed?
Answer
The message received during 'installibmcs' or 'sna start' is normal for a system that is not using MPC or does not yet have the ctcmpc driver installed. It does not affect the use of the rest of CS Linux. If you do not plan to use MPC, ignore the message. If you plan to use MPC, see the following README document to resolve this problem: CTCMPC README - MPC over CTC (System z only). For additional information on the ctcmpc device driver, see the following documents:
Development Stream
- Chapter 11 ("CTCM device driver") in Linux on System z: Device Drivers, Features, and Commands: Development Stream (Kernel 3.11) (SC33-8411-22).
- Chapter 11 ("CTCM device driver") in Linux on System z: Device Drivers, Features, and Commands: Development stream (Kernel 3.1) (SC33-8411-13).
- Chapter 11 ("CTCM device driver") in Linux on System z: Device Drivers, Features, and Commands: Development stream (Kernel 2.6.37) (SC33-8411-09).
- Chapter 10 ("CTCM device driver") in Linux on System z: Device Drivers, Features, and Commands: Development stream (Kernel 2.6.32) (SC33-8411-04).
- Chapter 11 ("CTCMPC device driver") in Linux on System z: Device Drivers, Features, and Commands: November 2007, Linux Kernel 2.6, October 2005 Stream (SC33-8289-04).
- Chapter 12 ("CTCMPC device driver") in Linux on System z: Device Drivers, Features and Commands: October 2007, Linux Kernel 2.6, April 2004 Stream (SC33-8281-04)
Red Hat Enterprise Linux Distributions
- Chapter 12 ("CTCM device driver") in Linux on System z: Device Drivers, Features and Commands on Red Hat Enterprise Linux 6.4 (SC34-2597-04)
SUSE Linux Enterprise Server Distributions
- Chapter 12 ("CTCM device driver") in Linux on System z: Device Drivers, Features, and Commands on SUSE Linux Enterprise Server 11 SP3 (SC34-2595-03).
- Chapter 11 ("CTCM device driver") in Linux on System z: Device Drivers, Features, and Commands on SUSE Linux Enterprise Server 11 SP1 (SC34-2595-01).
- Chapter 10 ("CTCM device driver") in Linux on System z: Device Drivers, Features, and Commands as available with SUSE Linux Enterprise Server 11 (SC34-2595-00).
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Document Information
Modified date:
02 August 2018
UID
swg21256663