== sanity test 248c: verify whole file read behavior ===== 09:37:39 (1742909859)
llite.lustre-ffff88012e904800.read_ahead_stats=c
striped dir -i0 -c2 -H crush /mnt/lustre/d248c.sanity
llite.lustre-ffff88012e904800.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 35.8 seconds
llite.lustre-ffff88012e904800.read_ahead_stats=
snapshot_time             1742909861.834244307 secs.nsecs
start_time                1742909859.836818430 secs.nsecs
elapsed_time              1.997425877 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-ffff88012e904800.read_ahead_stats=clear
llite.lustre-ffff88012e904800.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 37.1 seconds
llite.lustre-ffff88012e904800.read_ahead_stats=
snapshot_time             1742909864.052667686 secs.nsecs
start_time                1742909861.838366574 secs.nsecs
elapsed_time              2.214301112 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-ffff88012e904800.max_read_ahead_whole_mb=4