== sanity test 56dc: test 'lfs df -o' only shows OST devices ========================================================== 15:34:05 (1773689645)
UUID                   1K-blocks        Used   Available Use%  Mounted on
lustre-MDT0000_UUID      2209152       18944     2188160   1%  /mnt/lustre[MDT:0]
lustre-MDT0001_UUID      2209280       17536     2189696   1%  /mnt/lustre[MDT:1]
lustre-OST0000_UUID      3771392       31744     3737600   1%  /mnt/lustre[OST:0]
lustre-OST0001_UUID      3771392       25600     3743744   1%  /mnt/lustre[OST:1]

filesystem_summary:      7542784       57344     7481344   1%  /mnt/lustre