82 lines
2.2 KiB
Diff
82 lines
2.2 KiB
Diff
From 72abbe49a433d71ea1a50a88662f52f5b94e1639 Mon Sep 17 00:00:00 2001
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From: David Teigland <teigland@redhat.com>
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Date: Thu, 1 Apr 2021 12:08:58 -0500
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Subject: [PATCH 08/10] add pvscan-udev-initrd.sh
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pvscan wrapper for use in the initrd lvm udev rule.
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Finds the intersection of complete VG/LVs reported
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by pvscan, and the VG/LVs specified on boot cmdline.
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The resulting VG or LVs are printed as env-vars that
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the udev rule can IMPORT, and pass to vgchange/lvchange.
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---
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udev/pvscan-udev-initrd.sh | 57 ++++++++++++++++++++++++++++++++++++++++++++++
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1 file changed, 57 insertions(+)
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create mode 100644 udev/pvscan-udev-initrd.sh
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diff --git a/udev/pvscan-udev-initrd.sh b/udev/pvscan-udev-initrd.sh
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new file mode 100644
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index 0000000..1743771
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--- /dev/null
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+++ b/udev/pvscan-udev-initrd.sh
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@@ -0,0 +1,57 @@
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+#!/bin/sh
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+
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+# pvscan wrapper called by initrd lvm udev rule to find the
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+# intersection of complete VGs/LVs found by pvscan and the
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+# requested VGs/LVs from the cmdline.
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+#
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+# Used in 64-lvm.rules as:
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+# IMPORT{program}="pvscan-udev-initrd.sh $env{DEVNAME}"
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+#
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+# See /usr/lib/dracut/modules.d/90lvm/64-lvm.rules
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+
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+dev=$1
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+
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+type getarg >/dev/null 2>&1 || . /lib/dracut-lib.sh
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+
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+
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+VGS=$(getargs rd.lvm.vg -d rd_LVM_VG=)
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+LVS=$(getargs rd.lvm.lv -d rd_LVM_LV=)
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+
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+IFS=' '
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+
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+# pvscan will produce a single VG line, and one or more LV lines.
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+# VG <name> complete
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+# VG <name> incomplete
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+# LV <name> complete
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+# LV <name> incomplete
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+#
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+# LV names are printed as vgname/lvname.
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+# We only care about the complete items.
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+# Each pvscan will produce a single VG line,
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+# and may produce zero, one or more LV lines.
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+
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+PVSCAN=$(/sbin/lvm pvscan --cache --listlvs --checkcomplete --journal output --config 'global/event_activation=1' $dev)
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+
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+read -r -a VGSARRAY <<< "$VGS"
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+
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+for VG in "${VGSARRAY[@]}"
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+do
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+ if strstr "$PVSCAN" "VG $VG complete" ; then
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+ echo LVM_VG_NAME_COMPLETE=\'"$VG"\'
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+ fi
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+done
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+
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+# Combine all matching LVs into a single print containing them all,
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+# e.g. LVM_LV_NAMES_COMPLETE='vg/lv1 vg/lv2'
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+
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+read -r -a LVSARRAY <<< "$LVS"
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+
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+echo -n LVM_LV_NAMES_COMPLETE=\'
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+for LV in "${LVSARRAY[@]}"
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+do
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+ if strstr "$PVSCAN" "LV $LV complete" ; then
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+ echo -n "$LV "
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+ fi
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+done
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+echo \'
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+
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--
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1.8.3.1
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