== sanity test 56Dc: test 'lfs df -o' only shows OST devices ========================================================== 12:11:57 (1783959117)
UUID                   1K-blocks        Used   Available Use%  Mounted on
lustre-MDT0000_UUID      1414116       16668     1254636   2%  /mnt/lustre[MDT:0] 
lustre-OST0000_UUID      3833116       21380     3585640   1%  /mnt/lustre[OST:0] 
lustre-OST0001_UUID      3833116       21624     3584976   1%  /mnt/lustre[OST:1] 

filesystem_summary:      7666232       43004     7170616   1%  /mnt/lustre