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Andreas Rogge
Asked: 2017-06-28 08:00:09 +0800 CST

How to disable disk device user-friendly names in a RHEL 7 kickstart file

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We're right now in the process of deploying a set of fibre-channel connected hosts with multipathed root disks. The installation is automated through foreman, so we boot vie PXE and run anaconda with a kickstart file.

The default behaviour in anaconda is nowadays to use so-called user-friendly-names for multipath-devices (i.e. mpatha, mpathb, etc.). We would like to disable this behaviour so we have disks named by wwn.

As far as I understand the anaconda source-code there is a parameter/command called mpath_friendly_names, that can be used to enable friendly names (which is today's default). However, we want to disable friendly names and I cannot figure out what parameter/command in the kickstart will do that.

So how can I achieve this?

linux

1 Answers

  1. try passing to the booting kernel (i.e. within the append line if you use pxelinux)

    inst.mpathFriendlyNames=0

    EDIT: this parameters is used when processing flags at /pyanaconda/flags.py

    Initially processed flags can get their default value overwritten if the right variable is found when parsing the Kernel command line.

    In this case it overwrites the default value self.mpathFriendlyNames = true

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