== sanity test 56dc: test 'lfs df -o' only shows OST devices ========================================================== 07:16:11 (1773227771)
UUID                   1K-blocks        Used   Available Use%  Mounted on
lustre-MDT0000_UUID      1414116       23792     1247512   2%  /mnt/lustre[MDT:0]
lustre-MDT0001_UUID      1414116       21340     1249964   2%  /mnt/lustre[MDT:1]
lustre-OST0000_UUID      3833116       27312     3579708   1%  /mnt/lustre[OST:0]
lustre-OST0001_UUID      3833116       17276     3589744   1%  /mnt/lustre[OST:1]

filesystem_summary:      7666232       44588     7169452   1%  /mnt/lustre