SMC-Dv2 Compatibility Patches

z/OS announced SMC-Dv2 support here, see section "Shared Memory Communications Version 2 (SMCv2) multiple IP subnet support".

SMC-D v2 provides support for peers in different IP subnets, and eliminates the need to configure PNET IDs, simplifying the configuration significantly. Linux on Z support is being worked on.

When SMC-Dv2 is enabled in z/OS, a compatibility patch is required in Linux on Z, which is available in the following minimum Linux distribution levels:

  • RHEL 8.3, Linux kernel 4.18.0-228
  • SLES 15 SP2, Linux kernel 5.3.18-24.9.1 
  • Ubuntu 20.04, Linux kernel 5.4.0-45.49
More to come!

New Release: smc-tools v1.3.1

smc-tools v1.3.1 is now available for download here (MD5: 85361dab8818a6d92433b489086a4655).
This is a bugfix release, see the included README for further details.

New Release: qclib v2.2.0

qclib v2.2.0 is now available for download here (MD5: 7ecf7a877750fa4c170922ac8e801065).
The main addition is two new commands:

  • zname: Prints information about the IBM Z model generation
  • zhypinfo: Prints information about virtualization layers

Here is some sample output to illustrate the capabilities:

  $/zname -h

  Usage: zname [OPTIONS]

  Print information about IBM Z hardware.

    -a, --all            Print all available information
    -c, --capacity       Print capacity information
    -h, --help           Print usage information and exit
    -i, --cpuid          Print the CPU identifier
    -m, --model          Print model information
    -n, --name           Print the model name (default)
    -u, --manufacturer   Print manufacturer information

  $ zname
  IBM z15

  $ zhypinfo -h

  Usage: zhypinfo [OPTION]

  Print information about virtualization layers on IBM Z.

    -h, --help           Print usage information and exit
    -j, --json           Dump all available data in JSON format
    -l, --layers         Print number of layers
    -L, --levels         Print number of virtualization levels

  $ zhypinfo
    #  Layer_Type        Lvl  Categ  Name       IFLs    CPs    Total
    3  z/VM-guest          1  GUEST  R3545038      3      0      3
    2  z/VM-hypervisor     1  HOST   BOER3545      2      1      3
    1  LPAR                0  GUEST  R35LP45       2      1      3
    0  CEC                 0  HOST   P35          60      3     63

For more information, see the respective man pages and the included README.

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