== sanity test 248c: verify whole file read behavior ===== 22:38:51 (1783564731)
llite.lustre-ffff9fbe58948800.read_ahead_stats=c
striped dir -i0 -c2 -H crush  /mnt/lustre/d248c.sanity
llite.lustre-ffff9fbe58948800.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 3.41694 seconds
llite.lustre-ffff9fbe58948800.read_ahead_stats=
snapshot_time                       1783564735.956513728 secs.nsecs
start_time                          1783564732.179467006 secs.nsecs
elapsed_time                        3.777046722 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-ffff9fbe58948800.read_ahead_stats=clear
llite.lustre-ffff9fbe58948800.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 4.18133 seconds
llite.lustre-ffff9fbe58948800.read_ahead_stats=
snapshot_time                       1783564741.255775308 secs.nsecs
start_time                          1783564735.970715272 secs.nsecs
elapsed_time                        5.285060036 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-ffff9fbe58948800.max_read_ahead_whole_mb=4