I have RHEL 5.6 running on zVM 6.1. The RHEL userid has several FCP devices
dedicated in the cp directory.

When I add LUNs to the system to create a new file system, or expand an
existing one, I add the fcp/wwpn/lun triplet to /etc/zfcp.conf, run zfcp.sh
which then brings them all online. I then "echo reconfigure | multipathd
-r". (I think it's -r, I'm going by memory here)

All seems to be good, and everything survives a reboot... but recently I've
come across something about using mkinitrd and using zipl...

Is that necessary? Where can I read more about mkinitrd and when it is
needed and so on?

Thanks very much

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