1 files changed, 79 insertions, 0 deletions
diff --git a/backport-revert-lvm-remove-snapshot-feature.patch b/backport-revert-lvm-remove-snapshot-feature.patch
new file mode 100644
index 0000000..bba82e5
--- /dev/null
+++ b/backport-revert-lvm-remove-snapshot-feature.patch
@@ -0,0 +1,79 @@
+From 1549d5e89818603e1aa6dd8a40981222f59f1548 Mon Sep 17 00:00:00 2001
+From: David Teigland <teigland@redhat.com>
+Date: Wed, 8 Dec 2021 14:04:25 -0600
+Subject: [PATCH] revert(lvm): remove snapshot feature
+
+The feature of managing lvm snapshots has no known
+recent usage.  It is unknown if it works.  The lvm
+developers do not wish to maintain or support it.
+---
+ modules.d/90lvm/lvm_scan.sh | 39 ++++-----------------------------------
+ 1 file changed, 4 insertions(+), 35 deletions(-)
+
+diff --git a/modules.d/90lvm/lvm_scan.sh b/modules.d/90lvm/lvm_scan.sh
+index c42f97d..43601ad 100755
+--- a/modules.d/90lvm/lvm_scan.sh
++++ b/modules.d/90lvm/lvm_scan.sh
+@@ -7,8 +7,6 @@ type getarg > /dev/null 2>&1 || . /lib/dracut-lib.sh
+ 
+ VGS=$(getargs rd.lvm.vg -d rd_LVM_VG=)
+ LVS=$(getargs rd.lvm.lv -d rd_LVM_LV=)
+-SNAPSHOT=$(getargs rd.lvm.snapshot -d rd_LVM_SNAPSHOT=)
+-SNAPSIZE=$(getargs rd.lvm.snapsize -d rd_LVM_SNAPSIZE=)
+ 
+ # shellcheck disable=SC2174
+ [ -d /etc/lvm ] || mkdir -m 0755 -p /etc/lvm
+@@ -31,17 +29,10 @@ if [ ! -e /etc/lvm/lvm.conf ]; then
+         echo '}'
+ 
+         # establish LVM locking
+-        if [ -n "$SNAPSHOT" ]; then
+-            echo 'global {'
+-            echo '    locking_type = 1'
+-            echo '    use_lvmetad = 0'
+-            echo '}'
+-        else
+-            echo 'global {'
+-            echo '    locking_type = 4'
+-            echo '    use_lvmetad = 0'
+-            echo '}'
+-        fi
++        echo 'global {'
++        echo '    locking_type = 4'
++        echo '    use_lvmetad = 0'
++        echo '}'
+     } > /etc/lvm/lvm.conf
+     lvmwritten=1
+ fi
+@@ -90,28 +81,6 @@ unset extraargs
+ 
+ export LVM_SUPPRESS_LOCKING_FAILURE_MESSAGES=1
+ 
+-if [ -n "$SNAPSHOT" ]; then
+-    # HACK - this should probably be done elsewhere or turned into a function
+-    # Enable read-write LVM locking
+-    sed -i -e 's/\(^[[:space:]]*\)locking_type[[:space:]]*=[[:space:]]*[[:digit:]]/\1locking_type =  1/' /etc/lvm/lvm.conf
+-
+-    # Expected SNAPSHOT format "<orig lv name>:<snap lv name>"
+-    ORIG_LV=${SNAPSHOT%%:*}
+-    SNAP_LV=${SNAPSHOT##*:}
+-
+-    info "Removing existing LVM snapshot $SNAP_LV"
+-    lvm lvremove --force "$SNAP_LV" 2>&1 | vinfo
+-
+-    # Determine snapshot size
+-    if [ -z "$SNAPSIZE" ]; then
+-        SNAPSIZE=$(lvm lvs --noheadings --units m --options lv_size "$ORIG_LV")
+-        info "No LVM snapshot size provided, using size of $ORIG_LV ($SNAPSIZE)"
+-    fi
+-
+-    info "Creating LVM snapshot $SNAP_LV ($SNAPSIZE)"
+-    lvm lvcreate -s -n "$SNAP_LV" -L "$SNAPSIZE" "$ORIG_LV" 2>&1 | vinfo
+-fi
+-
+ if [ -n "$LVS" ]; then
+     info "Scanning devices $lvmdevs for LVM logical volumes $LVS"
+     lvm lvscan $lvm_ignorelockingfailure 2>&1 | vinfo
+-- 
+1.8.3.1
+