== sanity test 248c: verify whole file read behavior ===== 11:52:29 (1783957949)
llite.lustre-ffff8913c7ee5800.read_ahead_stats=c
striped dir -i0 -c2 -H crush  /mnt/lustre/d248c.sanity
llite.lustre-ffff8913c7ee5800.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 8.64866 seconds
llite.lustre-ffff8913c7ee5800.read_ahead_stats=
snapshot_time                       1783957960.999144506 secs.nsecs
start_time                          1783957951.670182910 secs.nsecs
elapsed_time                        9.328961596 secs.nsecs
hits                                16382 samples [pages]
misses                              2 samples [pages]
zero_size_window                    1 samples [pages]
failed_to_fast_read                 3 samples [pages]
readahead_pages                     1 samples [pages] 16382 16382 16382
llite.lustre-ffff8913c7ee5800.read_ahead_stats=clear
llite.lustre-ffff8913c7ee5800.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 6.3514 seconds
llite.lustre-ffff8913c7ee5800.read_ahead_stats=
snapshot_time                       1783957968.889979578 secs.nsecs
start_time                          1783957961.013910735 secs.nsecs
elapsed_time                        7.876068843 secs.nsecs
hits                                16382 samples [pages]
misses                              2 samples [pages]
zero_size_window                    1 samples [pages]
failed_to_fast_read                 3 samples [pages]
readahead_pages                     1 samples [pages] 16382 16382 16382
Test passed on attempt 0
llite.lustre-ffff8913c7ee5800.max_read_ahead_whole_mb=4