As of now _scratch_mkfs_sized() checks if the requested size is below 1G and forces the --mixed option for the mkfs.btrfs. Well the correct size considering all possible group profiles at which we need to force the mixed option is roughly 256Mbytes. So fix that. Signed-off-by: Anand Jain <anand.jain@xxxxxxxxxx> --- common/rc | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/common/rc b/common/rc index d5bb1feee2c3..90dc3002bc3d 100644 --- a/common/rc +++ b/common/rc @@ -969,7 +969,10 @@ _scratch_mkfs_sized() ;; btrfs) local mixed_opt= - (( fssize <= 1024 * 1024 * 1024 )) && mixed_opt='--mixed' + # minimum size that's needed without the mixed option. + # Ref: btrfs-prog: btrfs_min_dev_size() + # Non mixed mode is also the default option. + (( fssize < $((256 * 1024 *1024)) )) && mixed_opt='--mixed' $MKFS_BTRFS_PROG $MKFS_OPTIONS $mixed_opt -b $fssize $SCRATCH_DEV ;; jfs) -- 1.8.3.1