== sanity test 56Dc: test 'lfs df -o' only shows OST devices ========================================================== 21:43:17 (1782870197)
UUID                   1K-blocks        Used   Available Use%  Mounted on
lustre-MDT0000_UUID      1414116       19852     1251452   2%  /mnt/lustre[MDT:0] 
lustre-MDT0001_UUID      1414116       13480     1257824   2%  /mnt/lustre[MDT:1] 
lustre-OST0000_UUID      3833116       25244     3581776   1%  /mnt/lustre[OST:0] 
lustre-OST0001_UUID      3833116       19324     3587696   1%  /mnt/lustre[OST:1] 

filesystem_summary:      7666232       44568     7169472   1%  /mnt/lustre