== sanity test 248c: verify whole file read behavior ===== 11:30:16 (1782487816)
llite.lustre-ffff9150f2b84000.read_ahead_stats=c
striped dir -i0 -c2 -H crush2  /mnt/lustre/d248c.sanity
llite.lustre-ffff9150f2b84000.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 6.88814 seconds
llite.lustre-ffff9150f2b84000.read_ahead_stats=
snapshot_time                       1782487828.617327866 secs.nsecs
start_time                          1782487820.272248811 secs.nsecs
elapsed_time                        8.345079055 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-ffff9150f2b84000.read_ahead_stats=clear
llite.lustre-ffff9150f2b84000.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 10.9175 seconds
llite.lustre-ffff9150f2b84000.read_ahead_stats=
snapshot_time                       1782487841.418367331 secs.nsecs
start_time                          1782487828.629312678 secs.nsecs
elapsed_time                        12.789054653 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-ffff9150f2b84000.max_read_ahead_whole_mb=4