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06a30ae529
Add parsing of dracut cmdline option "rd.zfcp=..." at initrd runtime. It delegates configuration to chzdev. Implement `dracut --print-cmdline` and `dracut --hostonly-cmdline` for initrd build time. Emit an rd.zfcp option for each zfcp-attached SCSI disk in dracut's device dependency graph (to mount the root-fs, or to access the kdump target). This allows a distribution independent device configuration. Configuration is consistent by using chzdev as backend. It also prevents duplicate activations of the same device. Along with the existing functionality of zdev/dracut, it makes the following dracut modules superfluous: https://github.com/dracutdevs/dracut/tree/master/modules.d/95zfcp [rd.zfcp.conf is no longer needed and thus ignored here; the preceding ("zdev/dracut: fix marking hostonly files so delete option works") makes rd.hostonly=0 work as a generic replacement] https://github.com/dracutdevs/dracut/tree/master/modules.d/95zfcp_rules Github-ID: https://github.com/ibm-s390-linux/s390-tools/pull/158 Acked-by: Vineeth Vijayan <vneethv@linux.ibm.com> Acked-by: Peter Oberparleiter <oberpar@linux.ibm.com> Signed-off-by: Steffen Maier <maier@linux.ibm.com> Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
36 lines
1.0 KiB
Bash
36 lines
1.0 KiB
Bash
#!/bin/sh
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#
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# Copyright IBM Corp. 2023
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#
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# s390-tools is free software; you can redistribute it and/or modify
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# it under the terms of the MIT license. See LICENSE for details.
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#
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# 95zdev/parse-zfcp.sh
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# Parse the command line for rd.zfcp parameters. These
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# parameters are evaluated and used to configure zfcp devices.
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#
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zdev_zfcp_base_args="--no-settle --yes --quiet --no-root-update --force"
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for zdev_zfcp_arg in $(getargs rd.zfcp -d 'rd_ZFCP='); do
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(
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IFS_SAVED="$IFS"
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IFS="," # did not work in front of built-in set command below
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# shellcheck disable=SC2086
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set -- $zdev_zfcp_arg
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IFS=":" args="$*"
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IFS="$IFS_SAVED"
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if [ "$#" -eq 1 ]; then
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# shellcheck disable=SC2086
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chzdev --enable --persistent $zdev_zfcp_base_args \
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zfcp-host "$args"
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else
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# shellcheck disable=SC2086
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chzdev --enable --persistent $zdev_zfcp_base_args \
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zfcp-lun "$args"
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fi
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)
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done
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unset zdev_zfcp_arg
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unset zdev_zfcp_base_args
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