Only alter fstab if needed

2017-08-06 12:50:31 +01:00 · 2017-08-06 12:50:31 +01:00 · 267851bd89
parent 42754613df
commit 267851bd89
1 changed files with 5 additions and 1 deletions
--- a/src/freedombone-utils-filesystem
+++ b/src/freedombone-utils-filesystem
@ -124,7 +124,11 @@ function defrag_filesystem {
 }

 function optimise_filesystem {
-    sed -i 's|btrfs subvol=@|btrfs defaults,subvol=@,compress=lzo,ssd|g' /etc/fstab
+    if grep -q "btrfs" /etc/fstab; then
+        if ! grep -q "btrfs defaults,subvol=@,compress=lzo,ssd" /etc/fstab; then
+            sed -i 's|btrfs subvol=@|btrfs defaults,subvol=@,compress=lzo,ssd|g' /etc/fstab
+        fi
+    fi
 }

 # NOTE: deliberately no exit 0