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
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