reuse-parts.sh
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Authored by • Kormat on May 25 2020, 3:09 PM.

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	F31844338: raw.txt
	May 27 2020, 3:22 PM

	F31841657: raw.txt
	May 25 2020, 3:09 PM

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	#!/bin/sh

	[ -e /tmp/reuse ] && exit 0;
	touch /tmp/reuse

	#export DEBIAN_FRONTEND=noninteractive
	. /lib/partman/lib/base.sh
	. /lib/partman/lib/recipes.sh

	log() {
	logger -t reuse "$@"
	}

	[ $(debconf-get partman-auto/method) = "reuse" ] \|\| { log "Skipping, partman-auto/method != reuse"; exit 0; }

	disk=$(debconf-get partman-auto/disk)
	log "Disk: $disk"
	dev="$DEVICES/$(echo $disk \| sed 's:/:=:g')"
	cd $dev \|\| { log "ERROR: $disk doesn't exist"; exit 1; }

	open_dialog PARTITIONS
	while { read_line num id size type fs path name; [ "$id" ]; }; do
	case "$num" in
	1)
	log "====> Reuse / partition (with format)"
	[ "$fs" = "ext4" ] \|\| { log "ERROR: expected fs ext4 for partition $num, got $fs instead"; break; }
	echo format > $id/method
	touch $id/format
	touch $id/use_filesystem
	echo "$fs" > $id/filesystem
	mkdir -p $id/options
	echo / > $id/mountpoint
	touch $id/existing
	touch $id/formatable
	;;
	esac
	done
	close_dialog

	cd "$DEVICES"/=dev=mapper=* \|\| { log "ERROR: wrong number of lvm logical volumes found: $(echo "$DEVICES"/=dev=mapper=*)"; exit 1; }
	log "====> Reuse /srv lvm partition (retain data)"
	open_dialog PARTITIONS
	read_line num id size type fs path name
	[ "$fs" = "xfs" ] \|\| { log "ERROR: expected fs xfs for partition $num, got $fs instead"; break; }
	echo keep > $id/method
	touch $id/existing
	echo "$fs" > $id/filesystem
	echo /srv > $id/mountpoint
	mkdir -p $id/options
	touch $id/use_filesystem
	close_dialog

	log "Running update_all"
	update_all
	log "update_all result: $?"

Event Timeline

Requirements:

This script needs to be installed as /lib/partman/display.d/70reuse-parts within the running installer, and made executable.
- partman/early_command is the simplest way to do this.
d-i partman-auto/method string reuse