Make mkfs -f/-F flag selection more explicit

Signed-off-by: Jonathon Anderson <janderson@ciq.com>

CHANGELOG.md

@@ -37,7 +37,6 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 ### Removed
 
 - Remove unused Netdev `Prefix` field.
-- Fixed mkfs overlay overwrite/force-flag behavior. #2028.
 
 ### Fixed
 
@@ -46,6 +45,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 - Fix ImageDelete API not returning error when checking if image is used by nodes/profiles
 - Fix warewulf-dracut to not run the wwinit module if root is not set to `root=wwclient*`
 - Fix `wwctl image import --update` #2066
+- Fix filesystem overwrite/force behavior in mkfs overlay. #2028
 
 ### Dependencies
 

overlays/mkfs/rootfs/warewulf/wwinit.d/20-mkfs.sh.ww

@@ -59,9 +59,9 @@ if command -v mkfs >/dev/null ; then :
         info "warewulf: mkfs: formatting {{ $fs.device }}"
         {{- $forceFlag := "" }}
         {{- if $fs.overwrite }}
-            {{- if eq $fs.type "ext4" }}
+            {{- if regexMatch "^ext[234]$" $fs.type }}
                 {{- $forceFlag = "-F" }}
-            {{- else }}
+            {{- else if regexMatch "^(xfs|btrfs)$" $fs.type }}
                 {{- $forceFlag = "-f" }}
             {{- end }}
         {{- end }}