== sanity test 248c: verify whole file read behavior ===== 21:09:25 (1786410565)
llite.lustre-ffff92e8c62fc800.read_ahead_stats=c
striped dir -i0 -c2 -H crush2  /mnt/lustre/d248c.sanity
llite.lustre-ffff92e8c62fc800.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 7.24647 seconds
llite.lustre-ffff92e8c62fc800.read_ahead_stats=
snapshot_time                       1786410576.613073082 secs.nsecs
start_time                          1786410568.328891831 secs.nsecs
elapsed_time                        8.284181251 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-ffff92e8c62fc800.read_ahead_stats=clear
llite.lustre-ffff92e8c62fc800.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 6.16836 seconds
llite.lustre-ffff92e8c62fc800.read_ahead_stats=
snapshot_time                       1786410585.983880842 secs.nsecs
start_time                          1786410576.657106372 secs.nsecs
elapsed_time                        9.326774470 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-ffff92e8c62fc800.max_read_ahead_whole_mb=4