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-rwxr-xr-xpackage/base-files/files/lib/upgrade/stage210
1 files changed, 10 insertions, 0 deletions
diff --git a/package/base-files/files/lib/upgrade/stage2 b/package/base-files/files/lib/upgrade/stage2
index 23d356a447..e2259e3472 100755
--- a/package/base-files/files/lib/upgrade/stage2
+++ b/package/base-files/files/lib/upgrade/stage2
@@ -33,6 +33,9 @@ supivot() { # <new_root> <old_root>
}
switch_to_ramfs() {
+ RAMFS_COPY_LOSETUP="$(command -v losetup)"
+ RAMFS_COPY_LVM="$(command -v lvm)"
+
for binary in \
/bin/busybox /bin/ash /bin/sh /bin/mount /bin/umount \
pivot_root mount_root reboot sync kill sleep \
@@ -43,6 +46,7 @@ switch_to_ramfs() {
ubiupdatevol ubiattach ubiblock ubiformat \
ubidetach ubirsvol ubirmvol ubimkvol \
snapshot snapshot_tool date \
+ $RAMFS_COPY_LOSETUP $RAMFS_COPY_LVM \
$RAMFS_COPY_BIN
do
local file="$(command -v "$binary" 2>/dev/null)"
@@ -60,6 +64,12 @@ switch_to_ramfs() {
/bin/mount -o remount,ro /mnt
/bin/umount -l /mnt
+ [ "$RAMFS_COPY_LOSETUP" ] && losetup -D
+ [ "$RAMFS_COPY_LVM" ] && {
+ mkdir -p /tmp/lvm/cache
+ $RAMFS_COPY_LVM vgchange -aln --ignorelockingfailure
+ }
+
grep /overlay /proc/mounts > /dev/null && {
/bin/mount -o noatime,remount,ro /overlay
/bin/umount -l /overlay