== sanity test 248c: verify whole file read behavior ===== 15:00:47 (1788202847)
llite.lustre-ffff9a9693891800.read_ahead_stats=c
striped dir -i0 -c2 -H fnv_1a_64  /mnt/lustre/d248c.sanity
llite.lustre-ffff9a9693891800.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 7.02871 seconds
llite.lustre-ffff9a9693891800.read_ahead_stats=
snapshot_time                       1788202857.611154697 secs.nsecs
start_time                          1788202849.686068203 secs.nsecs
elapsed_time                        7.925086494 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-ffff9a9693891800.read_ahead_stats=clear
llite.lustre-ffff9a9693891800.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 7.89704 seconds
llite.lustre-ffff9a9693891800.read_ahead_stats=
snapshot_time                       1788202867.333126891 secs.nsecs
start_time                          1788202857.641095502 secs.nsecs
elapsed_time                        9.692031389 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-ffff9a9693891800.max_read_ahead_whole_mb=4