btrfs does not have options of defining mkfs options via the environment. Use BTRFS_MKFS_OPTIONS environment variable to set MKFS_OPTIONS for btrfs. Signed-off-by: Goldwyn Rodrigues <rgoldwyn@xxxxxxxx> --- common/config | 3 +++ 1 file changed, 3 insertions(+) diff --git a/common/config b/common/config index 285b7d1f..d83dfb28 100644 --- a/common/config +++ b/common/config @@ -410,6 +410,9 @@ _mkfs_opts() f2fs) export MKFS_OPTIONS="$F2FS_MKFS_OPTIONS" ;; + btrfs) + export MKFS_OPTIONS="$BTRFS_MKFS_OPTIONS" + ;; *) ;; esac -- 2.26.2