== sanity test 248c: verify whole file read behavior ===== 07:22:45 (1786533765)
llite.lustre-ffff8a1ec3414800.read_ahead_stats=c
striped dir -i0 -c2 -H crush  /mnt/lustre/d248c.sanity
llite.lustre-ffff8a1ec3414800.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 2.94949 seconds
llite.lustre-ffff8a1ec3414800.read_ahead_stats=
snapshot_time                       1786533769.371823740 secs.nsecs
start_time                          1786533766.231892708 secs.nsecs
elapsed_time                        3.139931032 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-ffff8a1ec3414800.read_ahead_stats=clear
llite.lustre-ffff8a1ec3414800.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 3.36299 seconds
llite.lustre-ffff8a1ec3414800.read_ahead_stats=
snapshot_time                       1786533773.292150213 secs.nsecs
start_time                          1786533769.378282573 secs.nsecs
elapsed_time                        3.913867640 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-ffff8a1ec3414800.max_read_ahead_whole_mb=4