== sanity test 248c: verify whole file read behavior ===== 04:32:05 (1738488725)
llite.lustre-ffff88012a4c1000.read_ahead_stats=c
striped dir -i0 -c2 -H crush /mnt/lustre/d248c.sanity
llite.lustre-ffff88012a4c1000.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 34.4 seconds
llite.lustre-ffff88012a4c1000.read_ahead_stats=
snapshot_time             1738488728.756946642 secs.nsecs
start_time                1738488726.581177985 secs.nsecs
elapsed_time              2.175768657 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-ffff88012a4c1000.read_ahead_stats=clear
llite.lustre-ffff88012a4c1000.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 33.4 seconds
llite.lustre-ffff88012a4c1000.read_ahead_stats=
snapshot_time             1738488731.211797451 secs.nsecs
start_time                1738488728.761052162 secs.nsecs
elapsed_time              2.450745289 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-ffff88012a4c1000.max_read_ahead_whole_mb=4