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From 2bfe8c53280b6c1e18339dddc5bb60b062cad5bb Mon Sep 17 00:00:00 2001
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From: David Teigland <teigland@redhat.com>
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Date: Wed, 8 Dec 2021 14:04:25 -0600
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Subject: [PATCH] revert(lvm): remove snapshot feature
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The feature of managing lvm snapshots has no known
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recent usage. It is unknown if it works. The lvm
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developers do not wish to maintain or support it.
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(cherry picked from commit 1549d5e89818603e1aa6dd8a40981222f59f1548)
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Resolves: #2037955
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---
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modules.d/90lvm/lvm_scan.sh | 39 ++++-----------------------------------
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1 file changed, 4 insertions(+), 35 deletions(-)
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diff --git a/modules.d/90lvm/lvm_scan.sh b/modules.d/90lvm/lvm_scan.sh
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index c42f97d5..43601ad1 100755
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--- a/modules.d/90lvm/lvm_scan.sh
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+++ b/modules.d/90lvm/lvm_scan.sh
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@@ -7,8 +7,6 @@ type getarg > /dev/null 2>&1 || . /lib/dracut-lib.sh
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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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-SNAPSHOT=$(getargs rd.lvm.snapshot -d rd_LVM_SNAPSHOT=)
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-SNAPSIZE=$(getargs rd.lvm.snapsize -d rd_LVM_SNAPSIZE=)
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# shellcheck disable=SC2174
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[ -d /etc/lvm ] || mkdir -m 0755 -p /etc/lvm
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@@ -31,17 +29,10 @@ if [ ! -e /etc/lvm/lvm.conf ]; then
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echo '}'
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# establish LVM locking
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- if [ -n "$SNAPSHOT" ]; then
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- echo 'global {'
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- echo ' locking_type = 1'
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- echo ' use_lvmetad = 0'
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- echo '}'
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- else
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- echo 'global {'
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- echo ' locking_type = 4'
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- echo ' use_lvmetad = 0'
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- echo '}'
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- fi
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+ echo 'global {'
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+ echo ' locking_type = 4'
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+ echo ' use_lvmetad = 0'
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+ echo '}'
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} > /etc/lvm/lvm.conf
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lvmwritten=1
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fi
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@@ -90,28 +81,6 @@ unset extraargs
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export LVM_SUPPRESS_LOCKING_FAILURE_MESSAGES=1
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-if [ -n "$SNAPSHOT" ]; then
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- # HACK - this should probably be done elsewhere or turned into a function
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- # Enable read-write LVM locking
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- sed -i -e 's/\(^[[:space:]]*\)locking_type[[:space:]]*=[[:space:]]*[[:digit:]]/\1locking_type = 1/' /etc/lvm/lvm.conf
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-
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- # Expected SNAPSHOT format "<orig lv name>:<snap lv name>"
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- ORIG_LV=${SNAPSHOT%%:*}
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- SNAP_LV=${SNAPSHOT##*:}
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-
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- info "Removing existing LVM snapshot $SNAP_LV"
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- lvm lvremove --force "$SNAP_LV" 2>&1 | vinfo
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-
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- # Determine snapshot size
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- if [ -z "$SNAPSIZE" ]; then
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- SNAPSIZE=$(lvm lvs --noheadings --units m --options lv_size "$ORIG_LV")
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- info "No LVM snapshot size provided, using size of $ORIG_LV ($SNAPSIZE)"
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- fi
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-
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- info "Creating LVM snapshot $SNAP_LV ($SNAPSIZE)"
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- lvm lvcreate -s -n "$SNAP_LV" -L "$SNAPSIZE" "$ORIG_LV" 2>&1 | vinfo
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-fi
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-
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if [ -n "$LVS" ]; then
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info "Scanning devices $lvmdevs for LVM logical volumes $LVS"
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lvm lvscan $lvm_ignorelockingfailure 2>&1 | vinfo
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