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689b894506
Converts zdev configuration into the syntax of the kernel module parameter dasd_mod.dasd. Only DASD options with non-default values are emitted. The result string occurs on stdout. It represents one device-specification for the given DASD device bus-ID. Example: /lib/s390-tools/zdev-to-dasd_mod.dasd persistent 0.0.da5d 0.0.da5d(erplog) User: https://github.com/storaged-project/blivet/pull/1162 to generate dracut cmdline entries such as rd.dasd=0.0.da5d(erplog) 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>
38 lines
1.2 KiB
Bash
Executable File
38 lines
1.2 KiB
Bash
Executable File
#!/bin/bash
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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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# zdev-to-dasd_mod.dasd
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# Converts zdev configuration into the syntax of the kernel module parameter
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# dasd_mod.dasd. Only DASD options with non-default values are emitted. The
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# result string occurs on stdout. It represents one device-specification for
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# the given DASD device bus-ID.
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#
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function usage() {
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echo "usage: ${0##*/} active|persistent <DASD device bus-ID>" 1>&2
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exit 1
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}
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[[ $# -eq 2 ]] || usage
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[[ "$1" == active ]] || [[ "$1" == persistent ]] || usage
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_selection="--${1}"
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_busid="$2"
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while read -r _line; do
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case "$_line" in
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"readonly=1") _attrs="${_attrs:+${_attrs}:}ro" ;;
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"use_diag=1") _attrs="${_attrs:+${_attrs}:}diag" ;;
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"raw_track_access=1") _attrs="${_attrs:+${_attrs}:}raw" ;;
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"erplog=1") _attrs="${_attrs:+${_attrs}:}erplog" ;;
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"failfast=1") _attrs="${_attrs:+${_attrs}:}failfast" ;;
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esac
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done < <(chzdev dasd "$_busid" "$_selection" --export - --quiet)
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[[ -n "$_attrs" ]] && _attrs="($_attrs)"
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printf "%s%s\n" "$_busid" "$_attrs"
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