Hi, One user complained that he cannot access one directory. Accessing that directory triggers OI scrubbing on the MDS but it does not find any errors. Filesystem is created with lustre 2.1.3 tools and now server side is upgraded to b2_5 branch b7243c0 +kernel-2.6.32.431.17.1.el6_lustre.Is there some way to debug this further to find out what the problem really is? d????????? ? ? ? ? ? progs ls -la progs ls: cannot access progs: Operation now in progress lfs getstripe progs llapi_semantic_traverse: Failed to open 'progs': Operation now in progress (115) MDT side: MDT0000: trigger OI scrub by RPC for [0x2012f90d5:0x6641:0x0], rc = 0 [1] stat /homeappl/.lustre/fid/[0x2012f90d5:0x6641:0x0] stat: cannot stat `/homeappl/.lustre/fid/[0x2012f90d5:0x6641:0x0]': Operation now in progress name: OI_scrub magic: 0x4c5fd252 oi_files: 1 status: completed flags: param: time_since_last_completed: 889 seconds time_since_latest_start: 991 seconds time_since_last_checkpoint: 889 seconds latest_start_position: 12 last_checkpoint_position: 268435457 first_failure_position: N/A checked: 18208728 updated: 0 failed: 0 prior_updated: 0 noscrub: 1586 igif: 80 success_count: 18 run_time: 102 seconds average_speed: 178516 objects/sec real-time_speed: N/A current_position: N/A lf_scanned: 0 lf_reparied: 0 lf_failed: 0