LVM/DM rules in dracut

I've looked at the LVM rules used in dracut just recently
and it needs fixing - we should react to change events only
for DM devices, so we have to skip vol_id/blkid call on ADD:

KERNEL=="dm-[0-9]*", ACTION=="add", GOTO="lvm_end"

Also, MD devices have their own rules, where vol_id/blkid
is called and where the symlinks are created (when looking
into raw initrd, this is in  64-md-raid.rules).

Also, if those rules are meant to be for DM devices only,
maybe we should skip symlink creation for the other devices
there, to keep the rules clean and straightforward. I think
we shouldn't create/recreate symlinks for non-dm devices in
LVM/DM rules (..should be in appropriate rules for that type
of device):

KERNEL!="dm-[0-9]*", GOTO="lvm_end"

modules.d/90lvm/64-lvm-vol_id.rules

@@ -6,14 +6,16 @@
 
 SUBSYSTEM!="block", GOTO="lvm_end"
 ACTION!="add|change", GOTO="lvm_end"
+KERNEL=="dm-[0-9]*", ACTION=="add", GOTO="lvm_end"
 
 KERNEL=="dm-[0-9]*", IMPORT{program}="vol_id --export $tempnode"
-KERNEL=="md[0-9]*|md/*", IMPORT{program}="vol_id --export $tempnode"
 
 ENV{ID_FS_TYPE}=="LVM2_member", \
     TEST!="/tmp/.lvm_scan-%k", \
     RUN+="/bin/sh -c '>/tmp/.lvm_scan-%k; /bin/ln -fs /sbin/lvm_scan /initqueue/lvm_scan.sh'"
 
+KERNEL!="dm-[0-9]*", GOTO="lvm_end"
+
 OPTIONS="link_priority=-100"
 ENV{ID_FS_USAGE}=="filesystem|other|crypto", ENV{ID_FS_UUID_ENC}=="?*", SYMLINK+="disk/by-uuid/$env{ID_FS_UUID_ENC}"
 ENV{ID_FS_USAGE}=="filesystem|other", ENV{ID_FS_LABEL_ENC}=="?*", SYMLINK+="disk/by-label/$env{ID_FS_LABEL_ENC}"

modules.d/90lvm/64-lvm.rules

@@ -6,15 +6,17 @@
 
 SUBSYSTEM!="block", GOTO="lvm_end"
 ACTION!="add|change", GOTO="lvm_end"
+KERNEL=="dm-[0-9]*", ACTION=="add", GOTO="lvm_end"
 
 KERNEL=="dm-[0-9]*", IMPORT{program}="/sbin/blkid -o udev -p $tempnode"
-KERNEL=="md[0-9]*|md/*", IMPORT{program}="/sbin/blkid -o udev -p $tempnode"
 KERNEL=="cciss[0-9]*", IMPORT{program}="/sbin/blkid -o udev -p $tempnode"
 
 ENV{ID_FS_TYPE}=="LVM2_member", \
     TEST!="/tmp/.lvm_scan-%k", \
     RUN+="/bin/sh -c '>/tmp/.lvm_scan-%k; /bin/ln -fs /sbin/lvm_scan /initqueue/lvm_scan.sh'"
 
+KERNEL!="dm-[0-9]*", GOTO="lvm_end"
+
 OPTIONS="link_priority=-100"
 ENV{ID_FS_USAGE}=="filesystem|other|crypto", ENV{ID_FS_UUID_ENC}=="?*", SYMLINK+="disk/by-uuid/$env{ID_FS_UUID_ENC}"
 ENV{ID_FS_USAGE}=="filesystem|other", ENV{ID_FS_LABEL_ENC}=="?*", SYMLINK+="disk/by-label/$env{ID_FS_LABEL_ENC}"